Mazda Rotary Club

Cars by Model Type => RX-8's => Topic started by: Paul_13 on September 01, 2018, 01:26:46 PM

Title: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 01:26:46 PM
Afternoon all.
Thought I'd start a project thread on my project car at the moment, it's a mx-5 nc 20th anniversary originally a 1.8l but a stroke of madness struck and bought a very rusty RX-8 for the engine.
I'll post more over the next couple of days
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 01:27:52 PM
Picture of rx8 engine in
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 01:56:26 PM
Propshaft end was a direct swap. The ppf I ended up making an adapter plate for, bottom bolts line up perfectly with propshaft centreline.
PPF is now bolted up and the propshaft is in! (https://uploads.tapatalk-cdn.com/20180901/bd239161f614d84361b67d3c2d8f9610.jpg)(https://uploads.tapatalk-cdn.com/20180901/6efd2c5149ffd36e975a7fe27649cc8f.jpg)(https://uploads.tapatalk-cdn.com/20180901/b0b90236647588716ff598cabb1f69b7.jpg)(https://uploads.tapatalk-cdn.com/20180901/169374e8aa92f87090a166cb6ed05db6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 01, 2018, 02:01:26 PM
Happy days good progress.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 02:07:15 PM
Luckily the car was a cat c and all of the airbags had blown. All of the wires in the pile are redundant so far, stripped out air bags, amp and a few other bits of wiring. Got to do the 2 dash one next.
Also found a way of extinguishing the air bag light! (https://uploads.tapatalk-cdn.com/20180901/deab0663687fdd598d11bdc4d26806e6.jpg)(https://uploads.tapatalk-cdn.com/20180901/fca33b2192934eaf921f33bb4ba51c78.jpg)(https://uploads.tapatalk-cdn.com/20180901/25bac8c5efba44acd2da007d9ccc56b5.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: re japi on September 01, 2018, 02:28:50 PM
Awesome! This project I really want to follow!

Lähetetty minun E2303 laitteesta Tapatalkilla

Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on September 01, 2018, 06:02:42 PM
First up  :welcome: to Mazda Rotary club

Good project and as you probably know the RX-8 and the NC share the same floor pan. The NC was very nearly a Rotary anyway and it went as far as Mazda Germany having demonstrators before the final piston or Rotary decision was taken.

Few of these conversions have been done and Jon (Boosted) sorted a race car version a while back.

We look forward to seeing it up and running as a  Rotary  :)
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 06:10:49 PM
Thanks for the kind words. I have already spoken with Jon on the phone who directed me here.

Only thing I'm struggling with is wiring at the moment, I can only find US spec diagrams. Stupidly I cut a section of wires out to lengthen the ABS plug (using rx8 abs pump) abs didn't anticipate needing the car loom...

I believe the wiring diagrams are on here somewhere but it won't let me access the link. I've paid to be a full member but unsure if it's been validated.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 01, 2018, 06:28:41 PM
May take a day or 2 to update membership...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 06:35:35 PM
I did it about 2 weeks ago and realised I paid again last night by mistake. Hopefully one lot of payments come out.



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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 01, 2018, 06:39:04 PM
I did think it was free tbh...
Pm Clive he will take alook and sort for you.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on September 01, 2018, 08:07:08 PM
Hello Paul,
Thank you for becoming a club member, I will get your access changed tomorrow and also get the payment thing looked into for you   
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 08:24:57 PM
Hello Paul,
Thank you for becoming a club member, I will get your access changed tomorrow and also get the payment thing looked into for you
Thanks, much appreciated

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 01, 2018, 09:48:38 PM
Any body know what these green plugs are for? I'm currently 20 miles away from the donor car and I can't go and check. Thanks in advance! Rx8 231 dash loom if that helps(https://uploads.tapatalk-cdn.com/20180901/43a9c4cbafa0a1af67ac34195a8366c3.jpg)(https://uploads.tapatalk-cdn.com/20180901/1751cf2bc003a29613cfc6f0a1b57cb8.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 01, 2018, 10:16:03 PM
I dont know sorry...would need to fire up laptop and look at drawings.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on September 02, 2018, 11:35:33 AM
They are not out of the back of the dash as these are two white plugs so I think its probably one you wont need.

(Hopefully Malcolm will be along later to sort out changing your access)   
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 02, 2018, 04:32:46 PM
Only thing that springs to mind is the plugs are for sat nav modules /screen

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 04, 2018, 09:14:02 PM
RX-8 uprights fitted and brakes back on.
Do people recommend fitting the front rx8 arb? Or is it overkill?

 Cat is asking when race car will be done? (https://uploads.tapatalk-cdn.com/20180904/be523c735727d2d3c515d219ff6d910d.jpg)(https://uploads.tapatalk-cdn.com/20180904/3aac847a9836bf7160458fcf81cb1558.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 04, 2018, 09:38:16 PM
Next job is to swap the ABS pump for the rx8 item.
Still can't believe how much room there is down the back! (https://uploads.tapatalk-cdn.com/20180904/e161d787e4bc4099bdb3bee574273258.jpg)(https://uploads.tapatalk-cdn.com/20180904/b410529c30894e9db67ba7f287a5109d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on September 04, 2018, 10:32:56 PM
Do people recommend fitting the front rx8 arb? Or is it overkill?

NC bars are very soft, yes just the RX-8 bar will be an upgrade but fit the rear as well, both are direct swaps 
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 04, 2018, 10:42:33 PM
Rear is already fitted

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 05, 2018, 06:33:31 AM
Ive heard rx8 antiroll bars are a good mod on an nc.
Nice cat!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 05, 2018, 10:16:56 PM
Front arb fitted with these bushes :) (https://uploads.tapatalk-cdn.com/20180905/d7574abaff6c0dcfa0c3add3e0c82d40.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 06, 2018, 10:09:00 PM
Loosely fitted engine bay loom however mother nature does not want me working on my car tonight!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 07, 2018, 09:34:24 PM
Fuse board box fixed and back together :) (https://uploads.tapatalk-cdn.com/20180907/130ee12fbe92b9be58d111450bf0134a.jpg)(https://uploads.tapatalk-cdn.com/20180907/b92f9f3971dabc253aad6728897f8e58.jpg)(https://uploads.tapatalk-cdn.com/20180907/26e7ff71b90c61e08422bf1e7b6efbe5.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 07, 2018, 10:06:15 PM
Could someone validate my account please for paid membership

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 07, 2018, 10:09:44 PM
Certainly cracking on with it.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on September 08, 2018, 04:47:34 PM
Could someone validate my account please for paid membership

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Hi Chris (Paul)

Account now validated, sorry for the delay
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 08, 2018, 05:49:05 PM
Could someone validate my account please for paid membership

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Hi Chris (Paul)

Account now validated, sorry for the delay
:D I blame my mother for that

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 08, 2018, 06:28:47 PM
More progress, steering ecu and relays in place as well as engine ecu. Water pipes getting there as well. Real struggle to remember where everything goes! Photos only show so much(https://uploads.tapatalk-cdn.com/20180908/9402f0d4aa6eac73a179346a34371e4a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 08, 2018, 07:07:26 PM
I've taken the mx5 abs pump out and will be putting the rx8 item in but slightly relocated.
Annoyingly I've got to get the abs working due to the new mot regs (https://uploads.tapatalk-cdn.com/20180908/44f6d35f01bdcf9358655d90f47cfb96.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 09, 2018, 11:06:34 PM
Mounted battery box after a bit of jiggling other bits about. Just fits and leads reach ad well! Expansion tank is loose at the moment.
That's enough for tonight before I piss off the neighbours and I've got work tomorrow! (https://uploads.tapatalk-cdn.com/20180909/80a4619646e0899cc41d4286063bc9e7.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 09, 2018, 11:07:58 PM
Planning on running an alloy pipe straight out of Tb into a 90' in front of front panel. Similar to what I had on here before with mx5 engine(https://uploads.tapatalk-cdn.com/20180909/74fd93ae913dc8d6aa4df40003a65217.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 10, 2018, 10:03:19 AM
The rx8 air box system is prbably best you can get i think its only the Aem that actually has a positive effect and its only small. In the Rx8 system youll find x2 grids..round guaze things these are actually air straightners and help with idle control and allow the maf to get acurant readings...ideally need to run at least 1. Early days of Westfield got a few maf and running lean codes to i fitted an air straightner back in.
The rate your going will be fire up soon.
What you doing with the fuel system?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 10, 2018, 01:53:00 PM
Ok thanks for the heads up.
I looked up the mx5 fuel pump rating and its 4bar so no need to change!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 10, 2018, 01:55:09 PM
Cool yep i remember now...flow rate will the pump keep up with the rennys thirst?  Whats the lph rating of the 2 compared?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 06:18:32 PM
Anymore updates? They were coming thick n fast !

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 06:21:39 PM
Oh yes, just haven't got round to it yet

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 06:23:43 PM
Brill.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 06:24:39 PM
It's been my 30th birthday over the weekend and my wife had this cake made. Very accurate representation of my mx5 currently (https://uploads.tapatalk-cdn.com/20180916/445ba7601b5c2004696d91db7487684f.jpg)(https://uploads.tapatalk-cdn.com/20180916/2a3711a7ba67c896cd6414e77ec53ab4.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 06:29:21 PM
She has skills! Seems a shame to cut into it.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 06:33:08 PM
This is my mx5 (eunos s spec mk1).(https://uploads.tapatalk-cdn.com/20180916/be5f9bddefa71434ef983d1b6562ed77.jpg)(https://uploads.tapatalk-cdn.com/20180916/28ee90c2122f330879704f6303b54372.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 06:45:40 PM
This is my mx5 (eunos s spec mk1).(https://uploads.tapatalk-cdn.com/20180916/be5f9bddefa71434ef983d1b6562ed77.jpg)(https://uploads.tapatalk-cdn.com/20180916/28ee90c2122f330879704f6303b54372.jpg)

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Tidy looking!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 06:47:57 PM
Just small wins but they seem to take the longest! Steering rack is on.
Expansion bottle is mounted. Battery box lid trimmed back.
Coolant hoses mostly refitted. Got to clip the one which goes over the exhaust tunnel.
Radiator, oil cooler and ABS pump next(https://uploads.tapatalk-cdn.com/20180916/80c6fb47cdccd0c9edfaff39986eea65.jpg)(https://uploads.tapatalk-cdn.com/20180916/757f9ffa8626e89d3e8f0fa1da613b04.jpg)(https://uploads.tapatalk-cdn.com/20180916/2cb995e8deb644003805abc4da09a250.jpg)(https://uploads.tapatalk-cdn.com/20180916/5c3ed729607199959ab685497eda5ffd.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 06:51:28 PM
That small hose tail fitting on top of rad to expansion bottle  can get brittle over time worth being gentle with it when fitting hose on.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 06:55:58 PM
Cool cheers, need to have another look at rad and see if it's use able

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 07:00:49 PM
Cool yep i remember now...flow rate will the pump keep up with the rennys thirst?  Whats the lph rating of the 2 compared?

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Need to double check in Haynes manual what the mx5 is, I know it states pressure, just can't remember seeing flow rate. The Internet is a murky place trying to find this information! Any one have rx8 fuel pump specs to hand?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 07:07:39 PM
And whilst room..give the steering UJ a good soaking in pentrating oil...they can cease up give centreing issues .

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 07:14:43 PM
Cool, luckily this has had a replacement at some point, had history in the rx8 book.
Although I'll probably have to use the mx5 steering rack. Same fitment.

What's the life span of d585 coils and magna core Ht leads?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 07:20:30 PM
They are supposed tobe fit and forget...but there have been failures so the jury is still out on them tbh. If they came from Rotary Revs they will have lifetime warranty...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 16, 2018, 07:21:06 PM
The leads are prob best you can get..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 07:24:12 PM
Cool, and the Ht leads?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 07:24:44 PM
The leads are prob best you can get..

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Sorry only just seen this

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 08:09:27 PM
They are supposed tobe fit and forget...but there have been failures so the jury is still out on them tbh. If they came from Rotary Revs they will have lifetime warranty...

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Goods news about coils. Ht leads look like they've done 40k, might replace those. Surprised Carl doesn't remember the car, had been there enough times! (https://uploads.tapatalk-cdn.com/20180916/46feaf1336f377a5e8b02ff3a5ea9f7f.jpg)(https://uploads.tapatalk-cdn.com/20180916/57ba63bdb21123d5d41298804b058753.jpg)(https://uploads.tapatalk-cdn.com/20180916/ca487ed42b654cba8b5984666699510f.jpg)(https://uploads.tapatalk-cdn.com/20180916/a45d968f15cf14122ede494489b00ac7.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 08:55:44 PM
Another job complete. Couple of p clips to hold the coolant pipe. (https://uploads.tapatalk-cdn.com/20180916/05afd2c1695a609d444879fae8d82ccd.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 08:58:26 PM
Vac/servo hose straight swap(https://uploads.tapatalk-cdn.com/20180916/614096b0adffa89999a2ff3e061658ed.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 10:14:24 PM
Thats the Haynes book of lies for mx5 fuel pump specs. Not much info... (https://uploads.tapatalk-cdn.com/20180916/aceb87c9d7ed67e64f9cd5f36c56f933.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 16, 2018, 10:27:13 PM
ABS pump bracket will be a hybrid with mx5 and rx8 bolted together, need some plates from work tomorrow, so hopefully progress tomorrow evening. Then to dust off my brake pipe flaring skillz(https://uploads.tapatalk-cdn.com/20180916/58c009f30b04868d1bfc7a552f2b6d3b.jpg)(https://uploads.tapatalk-cdn.com/20180916/4f942eba03b685f2d573a810d4bddfe9.jpg)(https://uploads.tapatalk-cdn.com/20180916/bd3c7af8c7758e76d622ee374e2f32a3.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 17, 2018, 07:19:32 AM
Took the dive and ordered tactrix obd port doodah and mazda edit...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 17, 2018, 10:35:06 AM
I tried to find info on NC and Rx8 fuel pump flowrate but drew a blank...a common upgrade for an rx8 is 255lph pump..walbro 255 or similiar...if you have the 8 pump pot assembly does it fit in the tank?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 17, 2018, 05:15:50 PM
Rx8 has 80k, mx5 has 32k on the clock. Would rather use mx5 for reliability

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 17, 2018, 07:45:39 PM
This landed today.
Nearly finished the mazda edit install(https://uploads.tapatalk-cdn.com/20180917/e20375d00c7bac4b894ef54e4dc57f8a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 19, 2018, 10:28:35 PM
A bit yeehaw but it's sturdy and secure. It shall do(https://uploads.tapatalk-cdn.com/20180919/b4c79f37421a336339aa24414f802acc.jpg)(https://uploads.tapatalk-cdn.com/20180919/6a5583005e7a416cb511197d85c61a1d.jpg)

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(https://uploads.tapatalk-cdn.com/20180919/81ff91a32f429c821ae15f41d24bbd85.jpg)(https://uploads.tapatalk-cdn.com/20180919/ee9c21ac557e5aa6d0df8a4384d8268c.jpg)
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 21, 2018, 11:41:32 AM
I bet when you get in bed your mind keeps going over jobs that need doing...i know mine did when doing the Westfield.
I learnt to meditate to clear my mind.
I repeat "dont think of anything" over and over again...usually does the trick..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 21, 2018, 03:56:17 PM
Kind of blessed with having adult ADD so I forget half the stuff I'm supposed to remember. We'll abs pump in and it fits! Lines next(https://uploads.tapatalk-cdn.com/20180921/0b9fbadc707cf492bde81c75e45c8603.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 21, 2018, 08:29:28 PM
Not the prettiest but it will do. Managed to manipulate oe lines so far. Got to source another flare nut from euro car parts in the morning. There's a funny size on the mc feed (https://uploads.tapatalk-cdn.com/20180921/164cf3714510d82b851e26210d42f093.jpg)(https://uploads.tapatalk-cdn.com/20180921/ad6dbb760f522d97b17af28d808c4dd6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 22, 2018, 01:43:04 PM
Luckily ecp sold the nuts, but in packs of 25.so I've a few spare!
I won't be flaring any more brake lines for at least another 5 years! Really peed me off.
So the ABS pump is pipe up, redone the line I did last night. Was rather drunk when I did the first attempt!
Also modified the clutch slave cylinder line, that's now complete.
Next job either swap the good ridge hoses over on the back or either fuel hoses etc(https://uploads.tapatalk-cdn.com/20180922/c7f18b79ede00eb4feb8df2c34122377.jpg)(https://uploads.tapatalk-cdn.com/20180922/59f8fc8e8e140577d61fdcbe9cf7ad99.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 22, 2018, 01:45:15 PM
Also the mx5 washer pump pushes straight into a pug 205 washer bottle. This will suit nicely in the corner of the engine bay. Also need to mount catch tank(https://uploads.tapatalk-cdn.com/20180922/99c357616b8404e6aaafadef1ec72907.jpg)(https://uploads.tapatalk-cdn.com/20180922/e409d29b0f9e379b64232a42e048bacf.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 22, 2018, 01:46:17 PM
Also bolted on the exhaust bracket. Loads of clearance :) lambda sensor also installed(https://uploads.tapatalk-cdn.com/20180922/913f90a70635d599b9fde817bc88c0a8.jpg)(https://uploads.tapatalk-cdn.com/20180922/509053c1aa8993b44ee1957229b5c646.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 22, 2018, 07:49:41 PM
Struggled with the weather today, only 2 days I've got to myself to do the car and it bloody pisses out down ffs.
Now in pretty certain this is Internet pub talk "misinformation" but I honestly cannot see a bloody difference between the mx5 and rx8 clutch pedal assembly. Apparently the rx8 setup is stronger? The only thing I can see is larger is the return spring ?! (https://uploads.tapatalk-cdn.com/20180922/6a97e641e3f5094e23c4baa5c37a022b.jpg)(https://uploads.tapatalk-cdn.com/20180922/ac4b6b9c4e7f56624c438adc9341ebff.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 22, 2018, 07:51:42 PM
Also made a start on the wiring I'd been putting off for a while(https://uploads.tapatalk-cdn.com/20180922/1f2df4855c2be4202f8d05a02537267c.jpg)(https://uploads.tapatalk-cdn.com/20180922/6a785b8595d479fa4f8cb362f3b3605e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 23, 2018, 02:52:53 PM
Alas the sun has returned, amazing the difference it makes.
More progress, wiring again. Glad I'm chipping away at it been quite a mental blocker for me. Also ordered a deatchsworks 300c 340lph  fuel pump. £165 lighter. But apparently a direct fit! (https://uploads.tapatalk-cdn.com/20180923/55e073c64b19fffef9abbce7ba5a0e21.jpg)(https://uploads.tapatalk-cdn.com/20180923/30824cf675b440d0ff5e65f556a099ee.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 23, 2018, 03:09:30 PM
Cool..good shout on upgrading fuel pump..
There is a reg mod could do whilst fuel pump out...there are little plastic piece that could me plastic welded ( tab with soldering iron) on top of intank regulator.
You should get a nice piece of convoluted hose with pump...soften ends with hot water before fitting...i used some hose clips as well for insurance.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 23, 2018, 03:10:55 PM
See you got the whole dash out...you putting the 8 dash in?...ive no idea if it fits mind.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 23, 2018, 03:14:58 PM
I'm struggling to make sense of some of that, predictive text fail?
Can you expand on the reg mod?
Had the dash out to swap the loom over, thought it was easier as I havent got small Japanese hands

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 23, 2018, 03:18:51 PM
On the top of regulator on fuel pot assembly is a plastic clip...weld it on with small tabs..ie melt it on in 1 or 2 places.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 23, 2018, 03:22:25 PM
I'll take it apart and have a look. I take it the regulator is separate to pump?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 23, 2018, 03:27:49 PM
Sits on top obvious when you look at it.. not essential you do...ive done with uprated and delete of fuel pump resistor means high pressure behind reg all the time.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 23, 2018, 03:56:34 PM
Cool I'll have a look thanks

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 23, 2018, 03:57:22 PM
Random find of the day. Heard a rattling noise and found this! How the hell did that get in there?! (https://uploads.tapatalk-cdn.com/20180923/644cf141f0b8421ae9351521f8a20a5f.jpg)(https://uploads.tapatalk-cdn.com/20180923/99e15e588ae332e2c6ca7a545ed389aa.jpg)(https://uploads.tapatalk-cdn.com/20180923/1bd083830cdb1af7247d9231153f56f0.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 25, 2018, 08:56:50 AM
Tried ordering a deatschwerks pump but the seller accidently had it listed as being in stock. He's recommended a quantum pump which I've ordered hopefully it's the correct one. Got a few nights in centre parcs for a little break, so only procrastination taking place for the next couple of days

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 25, 2018, 09:09:41 AM
Does any one have the I. D. of the rx8 intake boot to hand? Or the O. D. Of the maf tube?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 26, 2018, 02:02:58 PM
Does any one have the I. D. of the rx8 intake boot to hand? Or the O. D. Of the maf tube?

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Any one? Would be a great help

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 26, 2018, 07:26:50 PM
Tomoz mate ill remember to measure.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 26, 2018, 07:49:39 PM
Many thanks.
Just reading up about mazda edit. Going to adjust dwell timing for d585 coils and possibly look into omp settings.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 27, 2018, 01:52:59 PM
Hopefully this will all be the right size for the air intake. I'll have to measure the maf tube when I'm home.
Honda s2000 Air filter which has a 86mm internal neck diameter, 90mm tube (1.6mm wall thickness) and 90mm id 90' degree elbow.
Also thinking of buying the air straightener to put before maf sensor as I won't be able to use the rx8 screen. This should hopefully help distribute the air over the sensor correctly.
Similar setup to my mx5. Very limited to options but I'm not decreasing the bore size any where and it should be pretty free flowing.
All in all around £130. Or buy a non K&n filter which will be vastly cheaper(https://uploads.tapatalk-cdn.com/20180927/25b214b066f17f279ad311aa266e940c.jpg)(https://uploads.tapatalk-cdn.com/20180927/2c4d61e49c20fc31de234f0dac93687c.jpg)(https://uploads.tapatalk-cdn.com/20180927/9c02a32aacd1da719efe72fa8905a040.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 27, 2018, 03:06:17 PM
The small side is 80mm dia and large size onto filter box 95mm dia.
(https://uploads.tapatalk-cdn.com/20180927/cde1a2025fdd165581c497e1e5fe6a58.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 27, 2018, 03:16:59 PM
Could you measure the maf housing pretty please as well

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 27, 2018, 03:28:26 PM
I cant mate sorry...im off work ill with ibs thats was my venture outside today im back in bed already.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 27, 2018, 03:31:45 PM
Sorry to hear that! Hope you get better

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 28, 2018, 04:46:10 PM
Could you measure the maf housing pretty please as well

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Back on my feet..what do you mean by maf housing?...i have not got standard on mine...my car uses a cut up KnN typhoon tube with a massive ramair filter stuck out the nose cone...its joined by a silicone coupler...not sure i got what you need to measure.(https://uploads.tapatalk-cdn.com/20180928/58e0f00e95d96a6fd76090f93e0d5fd5.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 28, 2018, 05:07:53 PM
Not to worry back of holiday now and measured it up(https://uploads.tapatalk-cdn.com/20180928/a5509890482c6f1807918608057e9555.jpg)(https://uploads.tapatalk-cdn.com/20180928/d38d30105eb6051586823935a5b96814.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 28, 2018, 05:10:27 PM
Plan is to cut it off before air box and blank off hole. Can't find a maf housing tube for reasonable money, only stuff in America which is dear(https://uploads.tapatalk-cdn.com/20180928/9354691b481d77fc969008e04c43ab76.jpg)(https://uploads.tapatalk-cdn.com/20180928/7dc1692e41c5165c7e5ca6d63227adcd.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 28, 2018, 05:34:20 PM
Ok cool.yep thats why i cut an KnN typhon kit..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 28, 2018, 09:45:03 PM
Radiator mounted. Bloody snapped off the top hose. New rad needed.
Yanked fuel pump out and going to fit one I bought.
Front drop links fitted.
Cold air intake ordered
Rear brake lines were seized, going to forget fitting the rear braided lines. (https://uploads.tapatalk-cdn.com/20180928/d808d926aaf92abacf698b62c6db5c59.jpg)(https://uploads.tapatalk-cdn.com/20180928/d0360c49773d1322efa4d6f07d9ce098.jpg)(https://uploads.tapatalk-cdn.com/20180928/8d19a28b0383ffa099b93a86b4737303.jpg)(https://uploads.tapatalk-cdn.com/20180928/e6063888b7c3af5b9189a90089bbfc21.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 28, 2018, 11:10:43 PM
New fuel pump. Was recommended this by the supplier as they didn't have any deatschwerks ones in stock. Hopefully a straight swap. The old gauze was really clogged and a lot of metal :/ not sure what would cause that but would explain the lack of performance on the 1.8! (https://uploads.tapatalk-cdn.com/20180928/bb517b7af0d6f40bbe3d3eb51ae8cda5.jpg)(https://uploads.tapatalk-cdn.com/20180928/b97b77e8ce8adb5ba0b5cb75cc0eb5a0.jpg)(https://uploads.tapatalk-cdn.com/20180928/301f90118e4b71d67b0077065a367f2a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 28, 2018, 11:45:57 PM
Much easier than I thought! (https://uploads.tapatalk-cdn.com/20180928/23c764f6166d6511f87883a5be2a98e8.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 29, 2018, 07:38:43 AM
Similar but different to the rx8 fuel pot...the central chamber is in fact a secondary filter on the 8 and looks like it is too on the mx5.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 29, 2018, 07:46:56 PM
Stupid me didn't label up which was fuel line and what was evap....
Today has been full of mincing about without achieving a lot.
I've figured wiper wiring, going to do that later a long with extending the indicator loom to reach mx5 side indicators.

Picked up a new rad with ecp discount. Wasn't a bad price!

Also had a coil fail on the 330i this morning so had to fix that, went for a full set in the end along with plugs. Runs like a dream now.

Old mx5 engine is ready for its new home, being collected tomorrow. 33k Genuine miles! (https://uploads.tapatalk-cdn.com/20180929/73f9bb4c18090532fdb44063639189dd.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 29, 2018, 07:51:47 PM
Nc engine in demand me thinks...nearly as unreliable as a renny lol...
Earlier discussion on fuel gauges...does the mx5 have dual fuel gauge senders? The 8 does.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 29, 2018, 08:09:27 PM
Mx5 only has one. I'll have a look at rx8 wiring but I think the wires which transmits signal links into fuel pump sender wire from memory. I'll double check

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 29, 2018, 08:13:26 PM
Worth a look see..rx8 dash is expecting 2 senders.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 29, 2018, 08:16:46 PM
Might bridge the 2 in the diagram(https://uploads.tapatalk-cdn.com/20180929/2013e3713b9ee5fee10cdbd07042a4f4.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on September 29, 2018, 08:20:33 PM
Thought i mention it. Worth a shot.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on September 30, 2018, 09:02:20 AM
A few little wins last night wiring wise. Wiper is now wired up and also the indicators(https://uploads.tapatalk-cdn.com/20180930/fe14d017c9509813d8a08e4e26f62ee8.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 02, 2018, 09:10:38 PM
Nice easy fix on fuel sender I hope. I just need to get rid of green/white cable and keep black /brown and red /blue. Red/blue cable needs to spliced into 2 to give false reading for "sub" fuel sender(https://uploads.tapatalk-cdn.com/20181002/c0b2222b9bd6634f1a1572e032540e12.jpg)(https://uploads.tapatalk-cdn.com/20181002/77bc228f29bd6b3f7a42cd297cf115c9.jpg)(https://uploads.tapatalk-cdn.com/20181002/8d783244318f7cd029ce8c8b6baa23ad.jpg)(https://uploads.tapatalk-cdn.com/20181002/9f61148832577b152e996616ac38d48a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 07, 2018, 09:42:34 PM
Wiring wiring and more bloody wiring. Making good progress though. (https://uploads.tapatalk-cdn.com/20181007/9a86cad6d954a382ec098df8e4664e86.jpg)(https://uploads.tapatalk-cdn.com/20181007/740a28e7710c2625c57aafb6d42a0a80.jpg)(https://uploads.tapatalk-cdn.com/20181007/e028f86e4d15c53bb9b3f5c7f2bab0fa.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 08, 2018, 10:29:39 PM
Dsc sensor was a straight swap over from rx8.
Key was a straight swap(https://uploads.tapatalk-cdn.com/20181008/7fb37f7c55eefb110cd357d627fe2884.jpg)(https://uploads.tapatalk-cdn.com/20181008/09d636f7e38110615bb0f7fb7fc9257b.jpg)(https://uploads.tapatalk-cdn.com/20181008/9ad470e2ae7d3cc37010e198aabb4ca0.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 08, 2018, 10:31:27 PM
Fan wiring connectors are almost a straight swap. Just got to unpig connectors and swap plug over. Pretty much a straight swap! (https://uploads.tapatalk-cdn.com/20181008/e1ff67dd78f00df982f7aba378361a74.jpg)(https://uploads.tapatalk-cdn.com/20181008/1c4e09bc69463b3e1368ad97b4976ad4.jpg)(https://uploads.tapatalk-cdn.com/20181008/fd4ccd9f3e8110d9467eeac833f887af.jpg)(https://uploads.tapatalk-cdn.com/20181008/12db3f363821bf11f4570ee236347cda.jpg)(https://uploads.tapatalk-cdn.com/20181008/deea3bf2c73aef820a18b2d54d989f3f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 08, 2018, 10:33:21 PM
Steering column is identical to rx8 along with the connectors for stalks/key barrel etc
Swapped bits over so I could keep mx5 key working.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 08, 2018, 10:34:27 PM
Waiting for this to turn up also. Got IDS working but won't work with vcm1 cable I have. (https://uploads.tapatalk-cdn.com/20181008/d7aae9dfb88e9366ca222cc25931a59f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 08, 2018, 10:35:48 PM
Still waiting for alloy pipe for air filter to turn up. This one turned up by error 100mm dia x 100mm length. Not 90mm by 1M...thanks ASH.
hopefully replacement on its way. (https://uploads.tapatalk-cdn.com/20181008/7347293d48ea2121f7dc4e38402dcf57.jpg)(https://uploads.tapatalk-cdn.com/20181008/564924a4c7eeb049c4f4b4746e0a91c6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 12, 2018, 08:11:09 PM
Still waiting for alloy pipe to turn up right. Wrong size delivered yet again. Right diameter wrong length.
I've plugged the second loom in for the dash and everything marries up ish.
Got to relocate window switch now.

Has anyone got a photo of the plug on the hazard light switch?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 20, 2018, 11:39:17 PM
Still making good progress. Bit of a milestone today with powering things up :)
Only things I've buggered up so far are wiper setting 1 & 2 are wrong way round.
Boot popper doesn't work. Think I know what it is.
But fog lights work, indicators work, side lights work. Wipers work. Not sure if fuel gauge is displaying correctly. (https://uploads.tapatalk-cdn.com/20181020/f9ee15e8a60e8b12a6a0c2c8ec6148bc.jpg)(https://uploads.tapatalk-cdn.com/20181020/8b15d595de7ee9e1b8ced1e160a68413.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 21, 2018, 09:30:14 AM
Figured out the boot popper issue. Forgotten where I've placed the cancel switch. Just going to join the wires.
(https://uploads.tapatalk-cdn.com/20181021/cc3c0576d18968a94304fdc621455248.jpg)(https://uploads.tapatalk-cdn.com/20181021/68ee174ee8c7f50f162486c117241cf7.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 21, 2018, 09:34:45 AM
Also another over sight is the dipped beam bulbs. Rx8 is HID's. Luckily all it involves is removing the W/B and P/W wires from the grey plug and splice them into the mx5 plugs and run new earth cables. Bit of a ball ache removing the loom again but want to keep it neat.
The pics show what the wiring differences are(https://uploads.tapatalk-cdn.com/20181021/1a0aa8bc1810e28ef4ab69e77b729ac9.jpg)(https://uploads.tapatalk-cdn.com/20181021/134bc4a154d5b6834b5b286b6d903ab2.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on October 21, 2018, 10:26:11 AM
As you say, still making progress :great:
Excellent thread  :13:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 21, 2018, 11:01:06 PM
Boot popper works, "deleted" the boot popper cancel switch.
Central locking now works also - blown room fuse.
Windows work
Hazards work
Mirrors work

Only thing I need to look into now is the heater controls. Mx5 and rx8 are a bit different in how they work. Probably going to need to use mx5 setup and splice cables in (https://uploads.tapatalk-cdn.com/20181021/11b83e37ad8a22388b4520b7207fbe95.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 22, 2018, 11:32:50 PM
Argh, I'm working away from home for 2 days and it's killing me!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 24, 2018, 10:26:00 PM
Brake light now work after a crossed wire.
Also the reverse light works, gearbox is filled with oil and selector is bolted down.
Interior light issue sorted.
Wiper issue sorted.
Nearly there(https://uploads.tapatalk-cdn.com/20181024/d954e4de77592e650ddaa5d105e2d4c6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 25, 2018, 11:23:15 PM
Tonight's progress :
Heated rear screen works
Boot interior plastics are back in place.
Rear half of interior plastics are also back in.
Fuel pump works, fired a bit of fuel out to check it(https://uploads.tapatalk-cdn.com/20181025/05859425a3300647c5749af09ba4ecbe.jpg)(https://uploads.tapatalk-cdn.com/20181025/b1c63098e1c9350a64a5611c8f1b47ac.jpg)(https://uploads.tapatalk-cdn.com/20181025/09298c9991e89990b51b2b07f4877c40.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 27, 2018, 08:41:53 AM
Carpet is back in.
Worked out the fan controls, need to finish off splicing in mx5 loom.
Also need to convert the auto leveling headlight to
SOO MUCH BLOODY WIRING manual(https://uploads.tapatalk-cdn.com/20181027/e6d08f32d54f71c2831826a841a08133.jpg)(https://uploads.tapatalk-cdn.com/20181027/91fb58c0e0823e3fe2d94d959b19f1d8.jpg)(https://uploads.tapatalk-cdn.com/20181027/9dc889498c88d1cbeccee85d96ae5535.jpg)(https://uploads.tapatalk-cdn.com/20181027/4f0c55a8e7a939d2cf2e6beed4e2ead1.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 28, 2018, 07:56:45 PM
Todays progress :
Air box mounted
Dash is half in
Wiring is all in apart from stereo
Manual head light adjusters work :)
I earthed the air bag warning light wire and the warning light went out :)
Removed the auto leveling wire and that warning light went out also
Got a connection to the ecu with obd reader :)

Got to test heater controls next. Then dash can fully go back together(https://uploads.tapatalk-cdn.com/20181028/0cd9cfbcd5fdb468b5549bc42aa22830.jpg)(https://uploads.tapatalk-cdn.com/20181028/6f0873eaaf716c0e8682600c8bf59d4b.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on October 29, 2018, 08:49:01 AM
Great Progress.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 29, 2018, 11:09:22 PM
Stereo wired back up, sub woofer and amp powered up

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 30, 2018, 11:01:20 PM
Dash in after 2.5 hours of buggering about. 5 attempts to realise where I was going wrong and bits I missed off. Rest of interior to be fitted tomorrow(https://uploads.tapatalk-cdn.com/20181030/b0cb2e1a32153a1c4790b20686e34912.jpg)(https://uploads.tapatalk-cdn.com/20181030/4f02ac9fb00d789b28ee795dda7e015e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on October 31, 2018, 11:45:12 PM
More dash bits in.
Took a while to get the glove box to fit and had to relocate dsc switch.
Seats and steering wheel in tomorrow(https://uploads.tapatalk-cdn.com/20181031/6b0225be945f59aba0f714555d014c44.jpg)(https://uploads.tapatalk-cdn.com/20181031/d8a31e391287f0edcb78d5762703b32f.jpg)(https://uploads.tapatalk-cdn.com/20181031/ffc39eca0e51a21f9fe333ecc571322e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 01, 2018, 11:17:42 PM
Seats are in.
Also mocked the clocks up. Need super glue!
Need to figure out how to fix them. At first sight they look identical to the mx5 clocks but the lower screw holes don't line up ffs. Top mount is different also. (https://uploads.tapatalk-cdn.com/20181101/14bf6dabfc7b989f88c662777ce75363.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 02, 2018, 11:15:51 PM
Only bit I'm not overly happy with. But it works(https://uploads.tapatalk-cdn.com/20181102/c3413f5a9f409708c68509e0f0915b6e.jpg)(https://uploads.tapatalk-cdn.com/20181102/fda537c2b5bb7e458e6667127281cde2.jpg)(https://uploads.tapatalk-cdn.com/20181102/50d0618d2375e5bf146dfcb4a0cc0a49.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 04, 2018, 11:21:51 PM
Today's work included
- piping up heater box
- installing Peugeot 205 washer bottle
- relocating washer jet hosing to opposite side of engine bay.
- taking off manifold to put a bit of 9mm rubber fuel injection hose on instead of the oe nylon hose (which I proper buggered up thinking it was heat shrink d'oh). Not the prettiest job with the fuel hose but it does the job.

Aaannndddd I got Mazda IDS working.
Chinese seller is a complete twat.
Basically its a vcx diag unit in a vcm 2 case.
The software he supplied on the cd was corrupt.
You have to install mazda ids 106, then the update to 106.07. Install ford vcm manager. Install vcx diag manager.
After a lot of head scratching (read that a month of my life!) trying to get the thing working, I succeeded!

(https://uploads.tapatalk-cdn.com/20181104/9be55547b17f8fa9c9081e66343afb1d.jpg)(https://uploads.tapatalk-cdn.com/20181104/93bfb74fbf37cacafc7d6ee0cb71370b.jpg)(https://uploads.tapatalk-cdn.com/20181104/8a1df421c52a55839e3697bd7bbec554.jpg)(https://uploads.tapatalk-cdn.com/20181104/fbe2939dcc8fd1ee381c9b205cf6d797.jpg)(https://uploads.tapatalk-cdn.com/20181104/c17f98745896c7f1b25aa60802c07f5e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 05, 2018, 11:17:41 PM
Hooked up the air filter.
Booyakasha(https://uploads.tapatalk-cdn.com/20181105/ad49078b2cab70641b11cc6c0917013b.jpg)(https://uploads.tapatalk-cdn.com/20181105/0281d81ade47f29bcc160164452693b9.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 05, 2018, 11:20:21 PM
Plumbed up the catch tank, like to think I've done it right this time compared to the previous owner. Had oil /vapour print all down the side of the fuse box. As a result everything rusted even more... Weirdly.
Strut brace is also back on, everything fits!
Refitted the front brake lines, ready to bleed.(https://uploads.tapatalk-cdn.com/20181105/6b41d003062c2d4ccbd064cf235f0ba7.jpg)(https://uploads.tapatalk-cdn.com/20181105/392ef74210165cec658a518635106ee5.jpg)(https://uploads.tapatalk-cdn.com/20181105/69d497f22a97dea0dce43018e1312a50.jpg)(https://uploads.tapatalk-cdn.com/20181105/c49b2c08cbf3649eaa63530a0f58ac4a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 05, 2018, 11:21:06 PM
Oil cooler lines.... Loads of fun... Naht(https://uploads.tapatalk-cdn.com/20181105/79fb27af5aad1d559533c14b5ee49549.jpg)(https://uploads.tapatalk-cdn.com/20181105/72f3b44ab2640e453f359289af8fc7aa.jpg)(https://uploads.tapatalk-cdn.com/20181105/397e259a2416b2f6c0247ecdde265243.jpg)(https://uploads.tapatalk-cdn.com/20181105/cea88bc3fe2e7b07b38d8e339cc686a3.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 05, 2018, 11:22:29 PM
Trimmed the rx8 maf housing off the box. Elbow is a snug fit behind the bumper bar!
Need to figure out how to block the hole off from the resonator (https://uploads.tapatalk-cdn.com/20181105/0697d28b74a2f66f0904effad57c61f2.jpg)(https://uploads.tapatalk-cdn.com/20181105/635b28702710a7ddbbe90ae9b8397688.jpg)(https://uploads.tapatalk-cdn.com/20181105/5cb74d4dd983780fdba3a9798c686b31.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 06, 2018, 05:10:19 PM
I know youve already got an oil cooler, But advisable to use the 8 1s if possible they have inbuilt thermostats to get the oil up to temp quicker. Or use an oil thermostat.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 06, 2018, 05:14:03 PM
I did have a chat with hayward rotary before buying, only option I had really

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 06, 2018, 05:21:41 PM
I run 2 mocals and was gonna put a thermostat in..road use i block 1 and on track i prewarm else takes 2 lap to get up to 80 deg C.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 06, 2018, 06:24:01 PM
Crikey. Might need to have a think

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 06, 2018, 07:00:27 PM
There are oil filter sandwich plate thermostats available that would work...i find  the oil has About a 10 min lag behind the coolant so without a thermostat your prob looking at 20 mins for the oil to get upto working temp roaduse.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 06, 2018, 11:08:09 PM
Get the cooler mounted tomorrow and radiator.
Managed to get the gauze to fit before the maf housing, may save some hassle in the future. Still working on a way I can block the bottom hole off. Any ideas? (https://uploads.tapatalk-cdn.com/20181106/5a405d04c12d563cab2b54f3a305d7c8.jpg)(https://uploads.tapatalk-cdn.com/20181106/82e6ea606bee0b8a7587a2a744bbde0d.jpg)(https://uploads.tapatalk-cdn.com/20181106/5c0ad623502755a17ebddfdb1af2d625.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 06, 2018, 11:09:41 PM
@boosted do you run the gauze/air straightener on your setup? If not any issues?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 07, 2018, 05:10:36 AM
Yes i run 1...without get a maf refated code. System too lean etc i got through about 3 mafs in the early days before i fitted a gauze and no more issues.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 07, 2018, 11:00:05 PM
A bit of progress tonight, maf tube sorted. Ended up getting the soldering iron out and welding a plate in the opening. Not pretty but does the job.
Also cut the first bit of tube for air intake. Fits nicely! (https://uploads.tapatalk-cdn.com/20181107/e4862bbdad4102f7e8d9bb6146ab2b1c.jpg)(https://uploads.tapatalk-cdn.com/20181107/bae6f4e630431cef4acb70a2f0275ccc.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 08, 2018, 11:46:52 PM
Radiator is now in and fixed. Had to drop mounting arm brackets by an inch.
Oil cooler next(https://uploads.tapatalk-cdn.com/20181108/ef829ef6dd1a50cc855d5a022fe321d3.jpg)(https://uploads.tapatalk-cdn.com/20181108/2d70ecf1a9906cc51aac1505f6c63f6b.jpg)(https://uploads.tapatalk-cdn.com/20181108/213cf2a5c1ed42873629eb86fbb8812c.jpg)(https://uploads.tapatalk-cdn.com/20181108/64ea68cac27093efbe5548a3c58bf2de.jpg)(https://uploads.tapatalk-cdn.com/20181108/8f700dad4238b10e4d9bdd20e748b26f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on November 09, 2018, 12:17:28 AM
Coming along nicely

 :happy1:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 09, 2018, 04:30:28 PM
https://www.merlinmotorsport.co.uk/p/mocal-oil-sandwich-plate-with-thermostat-m-otsp-1

this is the thermostat thingy i was thinking off. not this exact 1 needs some investigation but its doable on your set up.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 09, 2018, 04:38:09 PM
What did you do with the connections on the irons? Blank them off?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 09, 2018, 04:52:09 PM
I am assuming so im at the same point as you but ive already got a sandwhich platewith oil temp and pressure worry gauges plumbed into. Not sure if you can stack them.
My understanding is up from sump through filter out of fitting on filter mount that bolts to rear iron...round oil coolers.( or bypassed by there thermostats) back to front iron return to sump. Unsure where the oil on bypass below 80 degress goes?
There are other seperate units you can get but bulky and for me involved a whole redesign that i just have not got round too.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 09, 2018, 04:53:50 PM
Ill link the other type which is more obvious.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 09, 2018, 05:01:03 PM
https://www.merlinmotorsport.co.uk/p/mocal-oil-thermostat-with-1-2-inch-push-on-tails-m-ot-8po

this is the other type that is simple to work out where the oil goes. 4 ports 1. oil in  2. oil out to cooler above 80 deg C 3. cooler return 4. oil back to sump either cooled or bypassed.

this with 1 cooler is a neat simple idea not as neat as sandwich plate if doable mind.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 09, 2018, 10:06:31 PM
After nearly a year of hunting for a grille I found one second hand on ebay! Fitted it tonight, looks good.
Connected mazdaEdit to the ecu.
Didn't get anything else done because of the bloody weather(https://uploads.tapatalk-cdn.com/20181109/906e5b5240da4830504af673a2665946.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 10, 2018, 09:42:03 PM
More slow progress because of the crap weather.
Oil cooler is mounted, air filter on and bumper test fitted. Everything fits! (https://uploads.tapatalk-cdn.com/20181110/0ae876ad1a52f4935adadf32ac7ee999.jpg)(https://uploads.tapatalk-cdn.com/20181110/408797b020a6a5e63317199410e3eec4.jpg)(https://uploads.tapatalk-cdn.com/20181110/103c0def3d047d64417ebf15dc4148df.jpg)(https://uploads.tapatalk-cdn.com/20181110/fe41700d8e7c3780345f136bec7d5dee.jpg)(https://uploads.tapatalk-cdn.com/20181110/bcad14f78a05b6ca0eb6adcbcb147bf8.jpg)(https://uploads.tapatalk-cdn.com/20181110/f9e305630daaf2fa5efa98bf848c4b29.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 11, 2018, 01:18:27 PM
Mazdaedit is up and running :) apologies for the crap pics(https://uploads.tapatalk-cdn.com/20181111/8b6eb2fba2723191d4c61fc224dc89cb.jpg)(https://uploads.tapatalk-cdn.com/20181111/e5268a19d0ae936b3c869555bdf09e6f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on November 11, 2018, 02:03:05 PM
Really getting there now  :great:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 11, 2018, 04:41:12 PM
Really getting there now  :great:
Very nearly there. (https://uploads.tapatalk-cdn.com/20181111/34dd379cf98d131698edf70f71f13bf0.jpg)(https://uploads.tapatalk-cdn.com/20181111/fd33e7bfb404d7fab73ab7b95d0f1190.jpg)(https://uploads.tapatalk-cdn.com/20181111/c348b4ce76ce56645a0a300fdb9c4d6d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 11, 2018, 10:39:04 PM
Got immobiliser problems, fast flashing immobiliser light, no starter.
Can't connect ids to it now either...
Does mazda edit affect anything? I haven't flashed the ecu only read it

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 11, 2018, 11:33:21 PM
Anybody know where the starter interlock switch is? I'm pretty certain I don't remember coming across this.
Going to earth the pin on the starter relay and bypass the pcm to start with.
I'm certain I've swapped everything over?! Ecu, keyless module. Using the right key next to halo(https://uploads.tapatalk-cdn.com/20181111/beeee9fab036d663d6375b2b343674ab.jpg)(https://uploads.tapatalk-cdn.com/20181111/b1b9011748798adc01bc3ddb37cd3c4f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 11, 2018, 11:36:46 PM
I think the interlock switch is the clutch switch?! Possibly. I don't remember having to push the clutch to start it on the rx8

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 08:49:45 AM
Starter interlock switch is the switch on the clutch pedal..not fitted on uk series 1 rx8 cars i believe on usdm and jdm cars my S type had to have the clutch pedal down to start.
Id check all the fuses first..flashing immobiliser light usualy means not recognised key chip.
You probably know this but never put jump back on with ignition ON has been know to wipe immobiliser codes and/or fry pcm..
Id check your fuses and report back.
The immobilisation is the starter relay and 2 other circuits so its gonna be the flashy light stopping it energising. The fact you now cant get comms with mazda edit makes me think a missing feed from a blown fuse or such like.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 01:45:23 PM
Starter interlock switch is the switch on the clutch pedal..not fitted on uk series 1 rx8 cars i believe on usdm and jdm cars my S type had to have the clutch pedal down to start.
Id check all the fuses first..flashing immobiliser light usualy means not recognised key chip.
You probably know this but never put jump back on with ignition ON has been know to wipe immobiliser codes and/or fry pcm..
Id check your fuses and report back.
The immobilisation is the starter relay and 2 other circuits so its gonna be the flashy light stopping it energising. The fact you now cant get comms with mazda edit makes me think a missing feed from a blown fuse or such like.

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What do you mean by the other 2 circuits?
Going to check fuse etc on a fresh head

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 03:42:02 PM
Coils and fuel pump circuit are also disabled by the pcm for immobiliser function.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 03:59:43 PM
Fuel pump was priming. That's what I can't get my head round.

What parts are "coded" pcm obviously, keyless module.. What else?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 04:18:23 PM
Trying to find a photo and failed.
You need pcm, key and visteon immobiliser module all from same car. The coil and receiver are dumb and not needed to be coded. As all your bits came from a running car must be a power feed or missing earth. Not sure why your cars priming the fuel pump though.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 04:43:34 PM
(http://i1065.photobucket.com/albums/u397/boosted38/b631ead4-eebb-49c0-9d18-54888e48922c_zpsaevqhbde.jpg)

found it.....

the receiver is required but not coded. got some doubt in my mind of the coil...but all your parts are from the same running car?
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 04:46:30 PM
if you get stuck this is my spare running set so could send it out to you.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 04:53:23 PM
heres a motivational piccy... (http://i1065.photobucket.com/albums/u397/boosted38/IMG_1981_zps022872fd.png)
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 06:50:28 PM
(http://i1065.photobucket.com/albums/u397/boosted38/b631ead4-eebb-49c0-9d18-54888e48922c_zpsaevqhbde.jpg)

found it.....

the receiver is required but not coded. got some doubt in my mind of the coil...but all your parts are from the same running car?
Yes all from the same car. I need to trace wiring diagrams and check I haven't missed anything off the plugs in the foot well.
I've swapped all of those parts over, only thing I need to check is the visteon small black box and make sure its plugged in properly.

OK  good to know,thanks for the offer!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 06:52:45 PM
My only thought is I've removed the sas unit completely and it doesn't show on the can network. But surely that shouldn't stop it from starting.
Just to clarify mazda edit connects as does my obd Elm327 reader. But IDS doesn't.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 07:31:31 PM
Sas will not effect it...what error code if any are you getting?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 08:13:40 PM
On the larger black box theres load of 12v feeds and several earths too. Would only take  1 to be missing and no dice.
My westy has no abs no rx8 dash no sas no tc basically fusebox and pcm and runs so can discount all that...a code read would help.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 08:17:50 PM
Looks like I might have to take dash/heater box out again. Space is so tight

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 08:20:59 PM
P1260 is the error code I was getting. Anti theft - engine immobilised on obd reader.

On ids while it worked I got the errors in the attached pic, didn't try to start the engine at that point

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(https://uploads.tapatalk-cdn.com/20181112/e3932adc195dfa9be95372c6376478fd.jpg)
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 08:28:47 PM
RKE is immobilser if my memory correct, bummer it will be summit simple.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 12, 2018, 08:34:43 PM
B1681 code some interesting reading...no code recieved from key..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 08:37:46 PM
Ah shoot, should of googled that code.
So frustrated I can't get ids to work again or that would of twigged sooner. Better start looking up wiring diagrams...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 12, 2018, 08:54:15 PM
That's the coil wiring diagram. Need to trace some wires...
They go through plug x-09. That's the one I had trouble with... (https://uploads.tapatalk-cdn.com/20181112/7a062a4b5fee381fe57fdc89d8026be0.jpg)(https://uploads.tapatalk-cdn.com/20181112/663da4646da75865c77f960296c7b47a.jpg)(https://uploads.tapatalk-cdn.com/20181112/143ea6f5fd12470d5af0bc2417121747.jpg)(https://uploads.tapatalk-cdn.com/20181112/e47dff3c9df8e2b0e2b18737447a696d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 13, 2018, 10:51:01 PM
Think I've had a light bulb moment... IDS couldn't connect to the EPS module, and also the antenna coil. Think I'm missing the feed out of the ignition relay. Back tomorrow so will start having a look at things(https://uploads.tapatalk-cdn.com/20181113/a766e51ef905bdf52bcd40d7837cbb16.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 13, 2018, 10:57:46 PM
Sounds very plausible...fingers crossed. I know from cutting mine and Clives loom down the feeds and earths go up n down the loom and several crimp joins for earths and power once you start picking them apart..plus like you say several big block connectors...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 14, 2018, 02:47:40 PM
Coil antenna was missing an earth! We have a cranking engine! Wooooo!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 14, 2018, 03:23:45 PM
Yay!!! Well done..!!!@

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 14, 2018, 04:22:11 PM
Yay!!! Well done..!!!@

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Cheers.
Does anyone know where the "chip" is located in the key? Is it in the blade section or the buttons?


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 14, 2018, 10:58:27 PM
Yay!!! Well done..!!!@

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Cheers.
Does anyone know where the "chip" is located in the key? Is it in the blade section or the buttons?


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Problem solved. Now have working mx5 key blade with Rx8 buttons. Also works with immobiliser :)
Coil antenna earth issue sorted.
Whipped spark plugs out and gave it a good cranking. The engine sounded like it had decent compression before I took the plugs out which is good.
Probably bleed the brakes tomorrow and mock the exhaust up.
The steering angle sensor I bought off a mazda 6 doesn't fit, looks identical but has very minor differences :( ordered a rx8 one for £28 grr.
Nearly there, keep losing sight of what I've got left to do(https://uploads.tapatalk-cdn.com/20181114/fa15efb189bcbd6e39b5044fbfd046dd.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 04:56:02 PM
Milestone achieved today :) tiny drop of coolant coming out of one of the hoses, nothing major :) (https://uploads.tapatalk-cdn.com/20181117/9d966e18e5480d3a4833f33aad27141b.jpg)(https://uploads.tapatalk-cdn.com/20181117/e70065c25d89ed68af70578fd778114f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 04:56:46 PM
Exhaust isn't ideal but it'll do for the mean while.
(https://uploads.tapatalk-cdn.com/20181117/35ac0db0451111e41f2684877acd1db1.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 17, 2018, 05:35:46 PM
Welldone !!!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 05:40:54 PM
Where is the barometric sensor located? I think its next to the oil filler tower. It was disconnected before I started the engine but i reconnected it. So hopefully an old fault code

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 17, 2018, 05:49:57 PM
Over on drivers shock tower but can go anywhere... wouldnt start if not connected.
Looks like issues with heater circuits on both o2 sensors..id check the resistance of both
Same colour wires are heater.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 05:53:36 PM
Over on drivers shock tower but can go anywhere... wouldnt start if not connected.
Looks like issues with heater circuits on both o2 sensors..id check the resistance of both
Same colour wires are heater.

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Can honestly say I don't remember seeing it.
I haven't got the rear o2 sensor installed. Was going to delete it on mazda edit. Did a bit of research and the concensus was it could run without it with map mods

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 05:54:55 PM
Ah.... I haven't installed that. The plug is taped up out the way(https://uploads.tapatalk-cdn.com/20181117/9dd70618ebe60955634196374a7013a8.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 17, 2018, 05:55:13 PM
Yep i only run front.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 17, 2018, 05:56:53 PM
Well running...mine neededit. Right ill check in later finishing work.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 08:48:51 PM
Phew, was in the scrap pile(https://uploads.tapatalk-cdn.com/20181117/004e26cd72647cbf336470735cb2bbb9.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on November 17, 2018, 09:06:34 PM
Well done, great job  :13:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: rote8 on November 17, 2018, 10:09:40 PM
Followed this with interest a job well done :notworthy:. I admire the likes of yourself and Jon (boosted), although I was an electrician, by trade, auto electrics just passed me by :sign0085: :)).
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 11:32:55 PM
All a leaving curve really, I'm a mechanical pipefitter by trade turned office boy. I didn't even know how to solder cable or use a multi meter properly. Just thinking what I can move onto next. Should really pull my finger out and fix my 205 gti instead of selling it!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 11:35:27 PM
Thanks for the kind words every one

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 17, 2018, 11:38:39 PM
It's back on the floor. I've moved the coolant clip round a bit so hopefully that's fixed.
Roughly did tracking.
Don't know what to do with the front plate, be a shame to put it on the bumper!
Got to buy a battery and take her for a drive to bed the engine in. Going to limit revs to 4k on mazda edit to stop temptation (https://uploads.tapatalk-cdn.com/20181117/f898f94cc7ae3b484abcc25b07ef367c.jpg)(https://uploads.tapatalk-cdn.com/20181117/2255fd48075133ce3b7d6c21451d2b5e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 18, 2018, 05:10:03 AM
Wel done! Engine bay shot ..looks well oem! I run 2 cars with stick on plates never been pulled over.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 12:24:13 PM
Better lighting(https://uploads.tapatalk-cdn.com/20181118/9c9d63055e98e813ef77ba9ae94b9f09.jpg)(https://uploads.tapatalk-cdn.com/20181118/7332aa10c2a2dda05f356d2cd18b3133.jpg)(https://uploads.tapatalk-cdn.com/20181118/db2a8d78877731d3c697c080a9168028.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: re japi on November 18, 2018, 03:19:17 PM
Good job, just amazing

Lähetetty minun E2303 laitteesta Tapatalkilla

Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 18, 2018, 04:24:46 PM
I spy the 205 gti..i never had 1 "back in the day" Had a xr3i, xr2, r5gtt, Orion 1.6i ghia.Cavalier sri 130..but my mate had 1.9 miami blue that i fixed for him so drove it a few times...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 04:26:01 PM
Owned a 205 of some sort for 12 years now. Time to move on

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 18, 2018, 04:30:08 PM
Problem with french cars is you need 3 elbows and tiny hands to work on them...my 93 colt gti is so 205 esqe...had it 9 years never selling as not worth a bean unlike a 205 and its a hoot to drive. (https://uploads.tapatalk-cdn.com/20181118/33d829f6f4bb60dbf33d44eaab8cd68d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 08:11:06 PM
Problem with french cars is you need 3 elbows and tiny hands to work on them...my 93 colt gti is so 205 esqe...had it 9 years never selling as not worth a bean unlike a 205 and its a hoot to drive. (https://uploads.tapatalk-cdn.com/20181118/33d829f6f4bb60dbf33d44eaab8cd68d.jpg)

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Ha, true but mazda was still tricky in certain areas.
Anyone point me in the right direction of intermittent steering please?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 18, 2018, 08:17:42 PM
Lock to lock to calibrate. Lubed the hell out of UJ. Clean up contact points on plug/socket on rack. 

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 08:21:26 PM
Could you elaborate on the lock to lock calibration please

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 18, 2018, 08:30:00 PM
Calibration after battery  change is literally lock to lock so it knows where it is. Light on dash will go out when its happy. The UJ is probably the culprit. Gets stiff needs a real good soaking in pentrating oil.
If the lights on theres a fault you need to scan .


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 08:32:20 PM
It's literally a brand new component. I checked it before I installed it. Previous owner had it replaced.

IDS still won't connect grrr.... My obd reader isn't picking it up

Is a if the vcm2 isn't communicating with my car. I've spoke to mazda edit and they haven't got a clue. Bit of a coincidence after I read the ecu with mazda edit
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 09:37:41 PM
Pulling my bloody hair out. Why won't it talk to IDS?! it was fine before connecting mazda edit.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 18, 2018, 10:56:04 PM
Are the clocks coded to the ecu? Looking at getting a replacement ecu to narrow down issues. Going at things blind without IDS

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 19, 2018, 07:38:42 AM
Clocks are not coded communicate via canbuss.
Have you looked at steering angle sensor ? Clock spring ...not much knowledge on the rx8 eps..Westy does not run it.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 07:49:58 AM
I had to replace the steering angle sensor as I smashed the first one, bought another off a mazda 6 (very slightly different) and then bought a rx8 one. Pretty happy it should be fine but I'll swap the actual sensor part for my old rx8 item.

Just had a thought about the abs/dsc fault, I thought I got away with taking the abs plug apart... Might of fudged something.

Had any one got a spare rx8 abs plug with a length of wires?

Also the hand brake light is lit, pretty sure I connected the cable however

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: rote8 on November 19, 2018, 08:36:57 AM

Had any one got a spare rx8 abs plug with a length of wires?

Could try a call to Pete at Boston Rotary 07932 678556 keeps most things, or Lewis at LC Rotary.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 19, 2018, 08:51:54 AM
Handbrake light will also be low brake fluid warning as well. Worth checking level sensor.  You added the yaw sensor behind arm rest? Part of dsc system?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 05:06:42 PM
Handbrake light will also be low brake fluid warning as well. Worth checking level sensor.  You added the yaw sensor behind arm rest? Part of dsc system?

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Level sensor was fine before but I'll check. Hopefully there's no wiring differences between mx5 & rx8.
Yaw sensor is installed. I'm certain the plug is knackered, I had doubts at the time. Wish I would of changed it then.



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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 05:06:51 PM

Had any one got a spare rx8 abs plug with a length of wires?

Could try a call to Pete at Boston Rotary 07932 678556 keeps most things, or Lewis at LC Rotary.
Thanks for the contact

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 05:40:12 PM
My neighbour is a legend. Snap on scanner connects to it... (https://uploads.tapatalk-cdn.com/20181119/abb6a958d18493cf61e8c4472d19b6c9.jpg)(https://uploads.tapatalk-cdn.com/20181119/8afb7b1df7f5db888c4d0a53614abdaf.jpg)(https://uploads.tapatalk-cdn.com/20181119/a4793bba61802f944ae93f4b85ef69ad.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 05:45:05 PM
U1900 EPS can bus
U2023 EPS can bus
C1155 left front wheel abs sensor


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 19, 2018, 06:00:47 PM
Can bus is the whiteblue twisted pair...only 2 wires..check good connection and the tracer polarity. I.e tracer wire connected to tracer wire..the cables look the same subtle difference....and again missing feed or earth on the eps pcm.
Abs sensor or wiring damaged.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 08:39:18 PM
Brake light mysteriously sorted, or it will probably stay playing up which I start the engine. (https://uploads.tapatalk-cdn.com/20181119/98207979c18dbeaf78deddcf9967ba77.jpg)(https://uploads.tapatalk-cdn.com/20181119/f71b340f1ad63ff99295b47bc943787c.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 09:56:04 PM
ABS cable has a break in it on the passenger side. Explains that one. Anyone got a spare? :D

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 10:33:19 PM
Checked the can bus line from EPS to ECU and that's fine... Might be an old fault

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 19, 2018, 10:37:48 PM
Bit scorched. Guess I'll be getting another! (https://uploads.tapatalk-cdn.com/20181119/cfdd46d8cd3069dc77b392403120349a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 20, 2018, 09:01:39 AM
Looks like eps relay on battery tower?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 20, 2018, 02:43:48 PM
Looks like eps relay on battery tower?

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It's the relay inside the EPS/ECU Box. I'm going to do a full check later of everything.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 20, 2018, 09:07:06 PM
Any body know what the relay is for where my finger is pointing? (https://uploads.tapatalk-cdn.com/20181120/07500ca0f5289372929a6bbc23556e22.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 20, 2018, 09:20:50 PM
Any body know what the relay is for where my finger is pointing? (https://uploads.tapatalk-cdn.com/20181120/07500ca0f5289372929a6bbc23556e22.jpg)

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Air pump relay.... Will be leaving that out. Wish I would double check things before ordering stuff. Got a pointless relay on its way in the post

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 20, 2018, 09:47:38 PM
Well good news, everything on the abs and EPS is correct wiring wise.
I've done a continuity test on all the EPS cables and torque sensor, all OK :)
Just waiting on electrical contact cleaner and abs sensor wire.

I double checked the abs sensor wire and no continuity which is strange, must of got damaged during swap

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 20, 2018, 09:49:42 PM
Finishing touches(https://uploads.tapatalk-cdn.com/20181120/3a9d4e48ac1c36a79d4560e63cc5b5e9.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 20, 2018, 10:11:38 PM
Taa daa(https://uploads.tapatalk-cdn.com/20181120/f8f9f4c74fbe4e0230e633464544e91a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 21, 2018, 01:14:39 PM
Lol like it .

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on November 21, 2018, 02:21:34 PM
 :)) Yeah, nice finishing touch  :13:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: rote8 on November 21, 2018, 02:57:34 PM
Likewise nice finishing touch prmoting rotaries. :sign0098:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 22, 2018, 09:45:47 PM
The earth cable was quite corroded on the EPS so hopefully that issue is sorted. Gave all the other connections a blast with contact cleaner.
New abs sensor wire is on.
Ready for a drive tomorrow :) (https://uploads.tapatalk-cdn.com/20181122/b37a3a355e0238fb01448a5e1b1e1233.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on November 22, 2018, 09:58:15 PM
Test drive   :whoo:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 22, 2018, 10:02:36 PM
A proper one this time

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 23, 2018, 07:55:29 PM
@boosted did you have to do anything to the map to make it run properly on one lambda?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 23, 2018, 08:33:30 PM
Hi mate no i didnt just got the code for it...it wont effect anything or it shouldnt...all the 02 sensor does is monitor cat efficiency...post and pre cat 02 sensor are different worth checking youve not swap them...
Whats happening? New engine expect some flashing cel misfire for a few hundred miles...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 23, 2018, 09:52:43 PM
Just prempting.
I did take for a short drive the other day and I've zero'd out the dtc's for air pump. Cat efficiency and rear o2 sensor codes.
I've set rpm limiter to 4k.increased oil injection rates slightly across the board.
Changed the dwell timing settings for d585 coils.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 23, 2018, 10:08:40 PM
Fitted these, I honestly thought they were a joke when I first saw them. But now I understand why they're needed! (https://uploads.tapatalk-cdn.com/20181123/e35a127d3d5ced2e80612857598e2c66.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 23, 2018, 10:10:27 PM
Delrin bushes? Yep good on a mk1.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 24, 2018, 06:36:55 PM
Got an issue with the speedo not working. How does the clocks receive the speed signal on uk manuals?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 24, 2018, 06:48:28 PM
Dont quote me but i was under impression via canbus and signal originates from abs/dsc module..so abs sensor dont know which 1.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 24, 2018, 08:05:01 PM
Cool cheers. Just plugged it in to the snap on scanner I don't have any signal from the rear abs sensors?!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 24, 2018, 09:06:17 PM
I've got continuity on both sensors to the abs plug.
I've compared mx5 and rx8 diagrams and it sends ad though the polarities are reversed and the sensor possibly only works one way.
Would explain why the EPS worked in reverse briefly! (https://uploads.tapatalk-cdn.com/20181124/bc580fb191d264d01b203c3921ed95a7.jpg)(https://uploads.tapatalk-cdn.com/20181124/dfd4639e46938d2cc5bef00c371be08e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 08:27:45 AM
Still nothing....
Going to have a look at rx8 part numbers against mx5 for rear abs sensors.
Can't imagine they're that different?!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 08:35:01 AM
Fuel gauge works :) (https://uploads.tapatalk-cdn.com/20181125/444a74779af6354845bed05ecf56bedf.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 25, 2018, 09:14:57 AM
The car i was involved in they swapped the subframes...not sure if mx or rx hubs so dont know what abs sensors on it... id be checking resistance values of rx8 compared to mx5 1s.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 09:33:50 AM
The car i was involved in they swapped the subframes...not sure if mx or rx hubs so dont know what abs sensors on it... id be checking resistance values of rx8 compared to mx5 1s.

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I was just thinking the same whilst driving....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 25, 2018, 09:37:12 AM
Info on the rx8 abs sensor should be on here in the technical section and im sure you got access to the mx info. Worth checking.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 07:47:29 PM
Rx8 sensor should read 1.3-1.7 but mx5 sensor only reads 1.056
I've ordered some resistors to see if its a quick fix(https://uploads.tapatalk-cdn.com/20181125/e4a4c62994341786cb3d594388c87585.jpg)(https://uploads.tapatalk-cdn.com/20181125/b3238ff30eb2867e1f6da27fe58e2713.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 07:51:10 PM
Rx8 shaft is on the grass
Mx5 shaft on the white background.
Both 44 teeth. But rx8 ring looks a bit deeper.
Not sure if that'll make a massive difference.
Rx8 sensors should fit but I'm not sure if it will be close enough to the ring.
Might give rx8 sensors a go failing the resistors (https://uploads.tapatalk-cdn.com/20181125/5d56e0f17a21d8eda18509aad8af852a.jpg)(https://uploads.tapatalk-cdn.com/20181125/f0ede665ab78552d5ba4f60588f4f082.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 25, 2018, 07:58:49 PM
Id get some get 1s correct resistance to work with rx8 abs...is the diameter of mx5 same as rx8? So pulses same ?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 08:04:38 PM
Id get some get 1s correct resistance to work with rx8 abs...is the diameter of mx5 same as rx8? So pulses same ?

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Not sure what you mean there predictive fail.
I've ordered some 1.5 kilohms resistors.

I've got the dimensions for the mx5 abs ring but can't find rx8 (https://uploads.tapatalk-cdn.com/20181125/f11311989c10ef970bc492a0d7d78848.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 25, 2018, 08:11:35 PM
I meant to say lol id get rx8 abs sensors correct resistance to work with the rx8 abs/dsc unit. My only concern would be diameter of ring so pulses are correct...and or diameter of front number of teeth etc.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on November 25, 2018, 08:23:58 PM
You should be OK the RX-8 and the NC use the same hub assembles
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 08:26:41 PM
Cool. I'll just ordered rx8 sensors. Many thanks

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 09:38:48 PM
Just took it for a 20 mile run up into 6th gear on the ring road, all good.
Still no speedo.
Going to limit the revs on mazda edit tomorrow. Loads of codes keep coming up, need to zero out dtc's!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 25, 2018, 09:40:35 PM
What was your recommendation for fuel additive @boosted?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 26, 2018, 06:32:10 AM
I use premix exol jaso fd 2t.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 26, 2018, 09:02:42 PM
Argh I hate getting abs sensors out(https://uploads.tapatalk-cdn.com/20181126/c94da5433de5e1cf7a3c9c16e1b48dc2.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 26, 2018, 10:18:10 PM
Did a bit more research and looks like I'll be swapping abs rings....
88mm vs 96.5 od.
Luckily they're both the same id.
(https://uploads.tapatalk-cdn.com/20181126/23b46df583c16c0f84762002f7c1efcf.jpg)(https://uploads.tapatalk-cdn.com/20181126/71e2707bc00ce7b42a426983d88f0018.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 27, 2018, 10:05:51 PM
Not the prettiest but they fit.
For the record rx8 and mx5 hubs are not the same. Rx8 has a much larger cut out for the sensor and is also sat further back away from the ring.
As it stands currently the sensor sits at the same distance from the ring as the mx5 sensor. May have to space it slightly if it won't work with mx5 ring.
The sensor reads 1.38 instead of 1.03 or what ever it was. So hopefully that'll do it. Going to test with scanner tomorrow.
(drive shaft isn't pushed all the way in that pic which is why it looks off) (https://uploads.tapatalk-cdn.com/20181127/67d029f02358e9f34b4c63799aca8ca0.jpg)(https://uploads.tapatalk-cdn.com/20181127/f8a041424ba14812e1c25d6abb3eb6a6.jpg)(https://uploads.tapatalk-cdn.com/20181127/232bc309d97825e89fceb180a2559e68.jpg)(https://uploads.tapatalk-cdn.com/20181127/d5ec5c578645bb4edde62ec1e461cdda.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 28, 2018, 07:07:45 PM
Managed to get the speedo to read :) (https://uploads.tapatalk-cdn.com/20181128/d0de4f7badf688b28ec9ea77daab3aea.jpg)(https://uploads.tapatalk-cdn.com/20181128/d4621237f499911d88b4233c65c822bb.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 28, 2018, 07:17:41 PM
Did you get the reading from manually turning the driveshaft as the piccy suggest?
Always wondered if speed signal comes from abs unit as as a sum of all 4 abs sensors or just 1..ifso which 1 as all good for knowledge.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 28, 2018, 07:19:39 PM
Just from spinning the drive shaft.
Rear right does the speedo reading :)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on November 28, 2018, 07:27:42 PM
Cool. Good to know.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 28, 2018, 10:26:33 PM
Still getting a reading with the wheel on :) better rotten those rx8 reluctor rings I bought... All £70 worth

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 28, 2018, 10:32:05 PM
For future reference if anyone has a stroke of madness and does this conversion. You have to drill out the old sensor hole to around 18-20mm.
Drill a pilot into the mx5 sensor and core through the hub. Rx8 sensor bolts straight in and connects to mx5 wiring. Leave mx5 abs/reluctor rings in place(https://uploads.tapatalk-cdn.com/20181128/cebe59c69b42232b6ee004f1e25925ee.jpg)(https://uploads.tapatalk-cdn.com/20181128/7b23795fe43e363d5d9f62971f6a4e6f.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 28, 2018, 10:33:49 PM
Hopefully this will help the noise :D(https://uploads.tapatalk-cdn.com/20181128/f19d7bc2bde8e68ab808078509e6244d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on November 29, 2018, 10:00:32 PM
Perfect fit!
New hub nut turned up and the stand off washers to do a better job of the ppf bracket. Much happier with it now.
All that's left is the last abs sensor (https://uploads.tapatalk-cdn.com/20181129/6871335c0cded27b3f2943971e3984ea.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 01, 2018, 06:10:51 PM
:) still a dsc fault but I think I know what it is. Hopefully be sorted tonight. Limited the revs at 4k,limiter sounds cool. (https://uploads.tapatalk-cdn.com/20181201/362a395dbe1c7d6a95879dbe602d3289.jpg)(https://uploads.tapatalk-cdn.com/20181201/1e8cec27dc8bd4993ffc10ac0486e93a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 01, 2018, 10:22:40 PM
Thought I fixed the dsc fault... Light comes on when I go above 10mph still.
Did another 30 miles tonight going well

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 12:12:01 PM
Doing a bit of reading and I think the dsc light is coming on because of the difference in size of abs rings... Looks like I may have to 8 install rx8 abs rings and space the sensor away from hub

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 12:20:44 PM
Whats your wheel sizes to? Not running a staggered set up? Ive come to the conclusion the dsc is never really off even when you turn it off...and the internet saying that you press and hold the button to turn completely off i believe is wrong...by pressing and holding i feel the dsc system actually logs it as a fault as its not expecting that switch input on for 10 secs...and it takes a cycle of the ignition to reset....as a fault would.
I think your gonna have to emulate the rx8 set up..the car i was involved in swapped the subframes hubs diff etc so didnt have this issue. Ill have a read through the technical manual see if i can glean some info.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 12:50:46 PM
Had a read what code you get for dsc?.
There is not a code for calibration out of range...which you would think youd be getting with incorrect pulses..
Id also expect an abs light..
Code would be a help.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 01:13:48 PM
The more i think about it the only component seperate to abs and eps is the yaw combination sensor.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 01:17:11 PM
I'm pretty sure it's going to be the abs rings on the driveshafts. I'm running mx5 rings with Rx8 sensors.

IDS still won't connect but I think I find a function on mazda edit that will read the codes so will give that a go. Might have to borrow neighbours snap on scanner again.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 01:18:37 PM
The more i think about it the only component seperate to abs and eps is the yaw combination sensor.

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I also need to check continuity of yaw sensor to check it's getting correct feeds/earth etc

I'm not getting a abs fault only dsc symbol in my pic above

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 01:20:33 PM
But as the fault only comes up after going over 10mph makes me think abs rings.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 01:21:38 PM
Explains it I think(https://uploads.tapatalk-cdn.com/20181202/5902051d4def48e10a873eff958bd016.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 01:30:56 PM
Yep i agree, just confusing that abs light does not come on...i suppose if yaw sensor was not right dcs light would come on with ignition not above 10 mph...if the dsc is more sensitive than the abs then yes dsc light and not abs...need a mazda master tecnician.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 01:32:07 PM
Id go see your neighbour....test not guess me thinks...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 02:40:53 PM
Just paid a bit more attention to what the car does after I start it.

Car is off
Start car - no dsc light
Drive up to 10ishmph
Rear abs/dsc starts activating goes crazy.
Stops and fault light appears.

Speedo also over reads pretty bad.

Mazda edit will not read code.

I think it's the rear abs ring diameter is too small and the difference is triggering the dsc.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 02:57:08 PM
Whats the plan now then?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 03:04:02 PM
Install rx8 abs rings and use neighbours snap on scanner. Should be it

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 03:07:12 PM
Coolfingers x

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 06:34:26 PM
Getting an expert at this. Took 25 mins to get to that point. Need to get to the bottom of the p0032 fault code as well(https://uploads.tapatalk-cdn.com/20181202/c9d46e7c2a215710f6fdf838ea7bf3c0.jpg)(https://uploads.tapatalk-cdn.com/20181202/ebe490037be45c40a917a34f788973be.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 07:13:29 PM
Front 02 heater circuit...the 2 same colour wires...its a heater to warm up the sensor to get it up to temp quicker and from open to closed loop control as quicker as poss.
Need to ohm test, if its open circuit then replace. Or turn it off with mazda edit.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 07:18:15 PM
Bought a new lambda as well, should of done that to begin with!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 07:26:08 PM
Direct wired to ecu via the engine loom...so doubt a connection...wont have a running effect....exhaust off a rotary is alway hot lol.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 07:44:13 PM
Direct wired to ecu via the engine loom...so doubt a connection...wont have a running effect....exhaust off a rotary is alway hot lol.

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The o2 was an reportably a working item, but probably an error. No offence to the seller BTW who is on here, it was free!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 07:50:54 PM
@boosted did you leave your rear o2 sensor unplugged? Any problems?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 08:02:47 PM
Also does any one have a rx8 drive shaft they can measure? Need the I. D. of the abs ring. Just want to double check before I take off the mx5 items

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 02, 2018, 08:05:37 PM
Cut mine out of loom no issues. Mines been mapped out light turned off although i havent got a engine check light lol ..all a post rear o2 sensor does is monitor the cat and check its working...
The front 02 sensor is the key 1 it runs the car when in part throttle cruise etc. Wot its not used uses the fuel map in the pcm..read summit in the states about disconnecting and running fuel map all the time but not brave enough to try my car gets used on road too so what it smooth in cruising and part throttle pulls. Cant really use wot on public roads will end in my tears...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 02, 2018, 09:38:32 PM
Good to know.
Must be dodgy o2 sensor, just traced all wires and all good.

Also just traced all of the dsc yaw sensor wires and they all match up. Yay

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 03, 2018, 04:58:09 PM
ABS rings are here. Fit them later(https://uploads.tapatalk-cdn.com/20181203/68e1906444aff3d06630e8d1a2000fae.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 03, 2018, 05:00:03 PM
Fingers x do the job.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 03, 2018, 07:46:21 PM
Well that come off easier than expected(https://uploads.tapatalk-cdn.com/20181203/763a51af66df091ce013aae2121b399b.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 03, 2018, 07:55:03 PM
Blowtorch? Interference fit?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 03, 2018, 07:58:20 PM
Polish up! Xmas pressie bangle for the mrs? Get a fancy box unobtanium!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 03, 2018, 08:01:36 PM
Ha.
No gear puller. Haven't put other one on yet

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 03, 2018, 08:46:05 PM
1 down(https://uploads.tapatalk-cdn.com/20181203/8fe4d4839390fd6f7d1c9820b0748d05.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 03, 2018, 09:01:21 PM
Mx5 vs rx8 ring.
Rx8 ring fouls hub.
Grinder will be out shortly(https://uploads.tapatalk-cdn.com/20181203/71595a838b6b40fe036cddb976439013.jpg)(https://uploads.tapatalk-cdn.com/20181203/8cfc0f5c8c82f40381fb9c11ce8d9918.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 03, 2018, 11:14:43 PM
Rings now clear. Got to space abs sensor away from hub(https://uploads.tapatalk-cdn.com/20181203/6355a2693fcf857cbf98c5df4d4d1ed4.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 04, 2018, 11:15:35 PM
We have a reading!
All back together, fitting new lambda tomorrow :) (https://uploads.tapatalk-cdn.com/20181204/830d9f60ca4963d5439a45c2e0d7d192.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: re japi on December 05, 2018, 05:10:47 PM
Good job!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 05, 2018, 10:13:32 PM
Still getting the traction control light showing up...
I did these codes the other day when I scanned it but some are probably old.
The dsc switch failure is from where I kept it pressed down for ages to bring the 2 lights up.
Communication error was from missing speedo signal.
The only one that I think could be causing the dsc fault is the dsc steering angle sensor.
The tracking is a mile off at the moment, maybe that's got diverging to do with the light coming on. Abs isn't juddering on this time(https://uploads.tapatalk-cdn.com/20181205/32c21671d454fc279be6a1219a92687a.jpg)(https://uploads.tapatalk-cdn.com/20181205/333fc9762453580c287c5b4de9010fb2.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 06, 2018, 08:43:41 AM
Seems as though bad tracking could cause it to go hay wire(https://uploads.tapatalk-cdn.com/20181206/fe1e4fb78caf459b04a623bf87157664.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: re japi on December 06, 2018, 11:02:07 AM
Good thing that Jon is around here. I dont know absolutely nothing about those things

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 06, 2018, 06:29:06 PM
Been off grid at work pretty much allday Im with 02....
Not had much dealing with the 8s eps...
But yes rack positive and steering wheel position must stay in sync.. so if there is a difference...then that is offset...
This is the rx8 rack ?
Gotta start with steering wheel angle sensor and then the position sensor in the rack itself...


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 06, 2018, 10:26:32 PM
It is the rx8 rack yes. We did reset the neutral position (thinking about it that could be the issue!) and the reset dsc trick.
The tracking is a mile out though.
Nearly crashed as I aqua plained on the m3 earlier. Literally threw me into the hard shoulder. 1 wheel did not have grip for several meters. Really shit me up. I've booked it in to go to wheels in motion.

I had a similar issue on the 330i (same abs pump pretty much) tracking was a mile out and the dsc was triggering.

No other faults than that though apart from P0076 intake solenoid, need to look that up.

Fuel gauge works perfectly :) shows how fast this thing gulps fuel. (https://uploads.tapatalk-cdn.com/20181206/3fb4ef2655ecac9f0b90a13d53f0d304.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 06, 2018, 11:11:33 PM
Been off grid at work pretty much allday Im with 02....
Not had much dealing with the 8s eps...
But yes rack positive and steering wheel position must stay in sync.. so if there is a difference...then that is offset...
This is the rx8 rack ?
Gotta start with steering wheel angle sensor and then the position sensor in the rack itself...


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Just a thanks for all your help so far and others in here much appreciated!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 07, 2018, 08:16:02 AM
No worries mate! Yep get that tracking done, dont risk the car esp. With this awful rain were having. Plus the dsc will brake the rear wheels if putting power down and it thinks your losing traction...shows up on an 8 with ditch finder tyres on the rear,  need to get it sorted before 9k time...if youve got a lot of rear brake dust tells you its working the rear calipers.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 07, 2018, 11:21:48 PM
Did the tracking roughly with 2 bits of wood, bricks and measuring tapes.
Wheels are parallel, hopefully centre of rack.
It was a mile out, toe in massively (20mm difference between front of when to back)
Also replaced lambda.

Take it for a test drive tomorrow

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 08, 2018, 11:03:25 PM
Still getting dsc code 1937. Steering wheel angle offset sensor failure...
I've replaced this with an item I bought on ebay and considering its on the CAN system the serial numbers don't match up? Causing the fault? Just a thought

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 09, 2018, 12:02:29 AM
Think I've figured it... When I put the deep dish steering wheel on (when it had the mx5 engine and no dsc) I put it on upside down... Bloody idiot.
The slot for the cables should be at the bottom not the top. Would explain why the indicators don't cancel as they should and the dsc keeps playing up. Doesn't help I rounded a screw off and snapped the Allen head in the other(https://uploads.tapatalk-cdn.com/20181209/da5199413cea17cecb10c5acfd52f860.jpg)(https://uploads.tapatalk-cdn.com/20181209/d238c598e42c09700d7113bbb31c316a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 09, 2018, 04:22:05 PM
Fixed! (https://uploads.tapatalk-cdn.com/20181209/c25e7b5ad197f6f16a22337feb25a535.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 09, 2018, 04:38:47 PM
Yay welldone..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on December 09, 2018, 04:45:06 PM
Nice find  ;) ;D
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 09, 2018, 06:16:14 PM
Dsc ring was 180' out. Dsc is quite sensitive, might need to change tyres and get tracking done properly

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 09, 2018, 10:33:59 PM
303 miles covered now :)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: rote8 on December 10, 2018, 08:59:04 AM
 :13:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 13, 2018, 10:43:45 PM
Still getting p0032. I've checked all wire connections and I'm getting a 0.32 ohm resistance reading on what should be the sensor earth back to the ecu... Something not right there. I'll just zero out the dtc I think.
550 miles in now :)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 19, 2018, 04:51:20 PM
Back from Italy... Holiday from hell with a 2 year old.
Went to WIM earlier to get the tracking done.
Rear left was out a fair whack annoyingly. I did hit a kerb earlier on in the year but instead of the wheel gaining more positive camber its got negative and the camber bolts are fully adjusted so it won't straighten out fully...
720 miles in now. Going to try and get it up to 1000 in the next couple of days and then take the 4k limiter off.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 19, 2018, 04:52:23 PM
Don't know what I did on IDS but it magically started working after a lot of buggering about. (https://uploads.tapatalk-cdn.com/20181219/a8ace4bb159a074a89036cdc7531667d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 19, 2018, 04:53:24 PM
Also is it possible to swap solenoid valves? My vdi one is faulty how've I'm not using the secondary air valve solenoid. (https://uploads.tapatalk-cdn.com/20181219/3f67135d63d3233c3cd6ef3d7fa20656.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 19, 2018, 04:57:32 PM
Yep you can swap them...ive closed the pins up on mine with pliers as had a bad contact and misfire .

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 19, 2018, 05:06:04 PM
Interesting...
I'm getting a weird sensation when I back off accelator or apply softly when moving... Its like a fluttering sound. Almost like a actuator flittering on and off rapidly.
Don't know of its related or rx8's "just do that"

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 19, 2018, 05:08:27 PM
At all revs?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 19, 2018, 05:12:25 PM
Yes, however it's still limited to 4k currently

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 19, 2018, 05:16:50 PM
Mmmm the switch over off the ports is very subtle and at 4k your not switching anyway...cant remember the switch points offhand..think 4500 and 7500.
Not sure tbh

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 20, 2018, 06:04:44 PM
Just about to tick over 1k. Going to dump the oil and change the oil filter. Also Raise the rev limit if I get the go ahead from Carl :)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 20, 2018, 06:10:34 PM
Woohoo fun time.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on December 20, 2018, 09:12:21 PM
It may be an idea to check that Intake Manifold SSV Secondary Shutter  valve is free and not carboned up as it could be the actuator trying to work it that's making that noise  you describe.

This is what it looks like out of the lower inlet
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 20, 2018, 10:16:38 PM
The only other thing is the vfad...have you capped the vac line at the manifold?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 20, 2018, 10:31:43 PM
The only other thing is the vfad...have you capped the vac line at the manifold?

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I have yes.
I'll check the vdi actuator etc.
Got a misfire code come up now
P0301 joy(https://uploads.tapatalk-cdn.com/20181220/8b4c6922ba03f49e9db6acce4c64440e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 20, 2018, 10:39:33 PM
Oh the joys of p0301 and p0302.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 20, 2018, 10:43:57 PM
Coincidently pops up after I've just created a fire ball in the back box. It's this something I need to be worried about? Seems as though you know a bit about the codes

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 20, 2018, 10:56:33 PM
As you begin to use full revs on fresh rebuild and few codes for misfires are likely to occur.
Id be inclined go do another relearn 20 brake stomp to.
In what instance?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 20, 2018, 11:00:32 PM
As you begin to use full revs on fresh rebuild and few codes for misfires are likely to occur.
Id be inclined go do another relearn 20 brake stomp to.
In what instance?

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I did the ecu reset on the way home. Still showed P0301.
Only thing I think it might be is I tweaked the coil pack dwell settings to the ones I found on rx8 forum. Wonder if that's causing the problem.
Didn't have any faults with the engine in the rx8 with standard dwell settings.

Or do I stop fooling around and buy new packs and leads

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 20, 2018, 11:02:40 PM
D585s?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 20, 2018, 11:07:05 PM
D585s?

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Yesh

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 20, 2018, 11:15:20 PM
Go back to original setting?..ive got geniune oem rev c,s
D585s still fail though.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 01:47:07 PM
Go back to original setting?..ive got geniune oem rev c,s
D585s still fail though.

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Right that's original settings back on and stomp reset done.
The car is still really quite juddery and spluttery on idle. I take that isn't normal. I'm used to idi diesels you see, not petrol cars

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 01:50:52 PM
Definitely misfiring slightly. Held revs at 3k and every now and again it pops.
Is now dropped down to idle and its mis firing every 5 seconds and struggles. Idle then raises back up

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 01:56:40 PM
Looks like Ht leads might be culprit... (https://uploads.tapatalk-cdn.com/20181221/2edac89d2740a8d37615c908b65d13bc.jpg)

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I haven't taken the others off yet
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:00:54 PM
No not good...should be silky smooth rotary lovelyness..

So believe the code then which is misfire..
Flashing engine light is realtime active misfire.
So like any car diagnose misfire. Coils leads plugs fuel and air.
Do the basics first..plenty of fuel? Leads on nice and secure?
Then move on plugs getting spark etc you can swap coil pack around too. You have a 1 rotor misfire indicated by code swap the pair front rear see if code moves and swap leading to trailing...leading does majority of work.
D585 have failed. Also check the connections on the sub d585 loom and the earth connection.
With any fresh build pretty good idea to fit brand new coils...
Its big debate in other places but im a firm believer in oem. Rev c not heard any fail yet...
If you get stuck ive got a diagnose used good set of rev b.
Fingers crossed.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:03:34 PM
Smoking gun that!!!  Resistance check for end to end continuity? Wrap up in insulation tape til you get another set? Move that leads coil to trailing..mx8 xmas lights in the dark...
These magnecors?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 02:05:03 PM
I had flashing light for misfire.
Leads I wasn't overly happy with, some didn't feel great. Coils have 40k ish on.
Plenty of fuel.
Not checked fuel pressure but will do.

I did check all sub loom connectors and they seemed to be OK.

Going to pick up a set of Ht leads from euro car parts. Hopefully they fit.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 02:06:32 PM
Smoking gun that!!!  Resistance check for end to end continuity? Wrap up in insulation tape til you get another set? Move that leads coil to trailing..mx8 xmas lights in the dark...
These magnecors?

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They are magnacor annoyingly. Previous owner really did not look after the car.

What's rev c and rev b?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:07:06 PM
D585 have a different coil connection to oem
Not sure euro will be upto speed with mods...
Rotary Revs is probably you best bet for new set sent quickly.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:08:09 PM
Oem coils had uogrades from mazda a b and c. C being latest revision.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 02:11:42 PM
D585 have a different coil connection to oem
Not sure euro will be upto speed with mods...
Rotary Revs is probably you best bet for new set sent quickly.

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Ah that's what I wanted to hear. Saves me £50...cheers

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 02:14:50 PM
Any one had any dealings with these coil packs?

Really want to use the car over Christmas! (https://uploads.tapatalk-cdn.com/20181221/2c28469d546f121992de25b970e300d6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:23:58 PM
Nope...oem or not atall when it comes too std coils.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:24:21 PM
Give Clive MRP a bell.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 02:32:01 PM
MazdaRotaryParts.com.
Clive on here if you didnt know company.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 03:45:30 PM
Thanks. Tried ringing. No answer

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 03:54:50 PM
Id wait for Clive..as a member youd get discount and he will send out quick over chrimbo for you.
So you want to use car.
Id resistance check end to end to make sure ok...the fact the insulation has broke down suggest some mishandling damage and the lead has been arching done to earth.
If you can restore that insulation with insulation tape...gert fatty wrap...should be fine to use.
Mazda state 30k on plugs...i change at 9k. Rev c coils should be good for 25k plus. D585s are good our r3 had them but never started good always rough idea til warmed up abit ..i swapped to oem and lovely.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 04:00:23 PM
I called mazda in little wick Green. They have a full set of rev c and Ht leads. Just got to get over there to pick them up. Currently lumbered looking after daughter... They close at 6pm. Might be a grand parent favour coming on :D

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 04:10:54 PM
Lol. Good luck.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 05:19:41 PM
Mazda couldn't find the HT leads, so here I am at euro car parts buying back the HT leads I returned earlier!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 05:43:09 PM
Coils main thing leads will be fine from euro.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 06:09:41 PM
Coils are at my nans, rev c :)
You got to love grand parents.
Cost an arm and a leg, I wish I weren't so impatient some times

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 06:13:58 PM
I shudder to think...always had a beef with Mazda about the cost...there none to fail and kill rotary engines...mazda are rotary engines yet they fail to set a realistic price that allows owners to change as a precaution maintenance ite.m the VAG 1.8 turbo 20v also has a habit of coils failing...there £20 ea from main dealer....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 09:08:16 PM
:) (https://uploads.tapatalk-cdn.com/20181221/97beb94a7fbef3831f0514f2ed7c567b.jpg)(https://uploads.tapatalk-cdn.com/20181221/6d5507c4268d60e3498ed4467838524e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 09:16:43 PM
Cool.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 09:34:29 PM
I think it was a lead issue. Looks like it was not seated properly. Coils look alright otherwise(https://uploads.tapatalk-cdn.com/20181221/9b5c152d4807bc428328300a801518b3.jpg)(https://uploads.tapatalk-cdn.com/20181221/775e081e5ff77864ceb83bf35fb68ade.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 09:37:15 PM
Do I need to do anything extra? Already got insulating stuff on there(https://uploads.tapatalk-cdn.com/20181221/2309f66ccda9c0966227719c8277f07e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 21, 2018, 09:39:47 PM
No.got the insulating material all good.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 10:18:29 PM
BOSH(https://uploads.tapatalk-cdn.com/20181221/7a4c5521c452b7b9dd52c7f61af954e6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 21, 2018, 10:54:31 PM
Stomp reset done. Fingers crossed

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 22, 2018, 03:47:59 PM
The engine revs up well now but still stutters very slightly on idle. Need to clean up the plugs I think. One thing I haven't done.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 22, 2018, 07:44:24 PM
Id leave plugs..couple of drive cycles idpe should improve.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 10:06:00 AM
:) goes some. Can you up load videos?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 23, 2018, 11:53:10 AM
I upload to youtube and link from there..be good to see a vid or 10 lol.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 12:04:07 PM
I upload to youtube and link from there..be good to see a vid or 10 lol.

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No really a fan of putting driving videos on YouTube incase they get used against you lol. Might have a look at other platforms

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 23, 2018, 12:09:34 PM
Yep i agree...Casey the techie man .

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 23, 2018, 12:10:51 PM
Cant remember...you got the 8 diff in there or the mx5 1...what ratio is the 5 1?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 01:03:33 PM
Kept the mx5 diff.
It's a 2.0 5 speed lsd.

4.3 ratio instead of 3.91

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 23, 2018, 01:07:57 PM
Cool.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: exiled-viking on December 23, 2018, 02:06:24 PM
interesting to see lost of people going back to mazda Coils rather than going for some of the other makes out there mind you mazda have improved them some what but its the price of coils that gets me ........
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 02:07:52 PM
interesting to see lost of people going back to mazda Coils rather than going for some of the other makes out there mind you mazda have improved them some what but its the price of coils that gets me ........
I heard a bit of a rumor of where the d585 are actually sourced which has put me off slightly.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 03:25:07 PM
The list of getting smaller. Weirdly the vdi fault P0076 hasn't popped back up...
Need to get some Ht lead coil wrap. Think something isn't right on idle still(https://uploads.tapatalk-cdn.com/20181223/fce7c475c0b72c3dce920c3668bbcb48.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 04:16:30 PM
I think I have figured the mis fire issue.... I shouldn't mess about with things but I increased the oil injection rate of the omp on idle, the plugs are probably soaked in oil

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 05:47:43 PM
I think I have figured the mis fire issue.... I shouldn't mess about with things but I increased the oil injection rate of the omp on idle, the plugs are probably soaked in oil

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Better straight away! Lesson learnt don't mess with things you don't fully understand (yet)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 23, 2018, 06:13:46 PM
I dont use mine atall..its still plugged in so doesnt go into limp but block is plated over...i premix only now and that means i can run 5w40 fully sythenthic oil.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 23, 2018, 06:16:27 PM
Is limp mode noticeable on these engines? Rev limiter?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 23, 2018, 06:18:47 PM
Yep no more that 4500 revs and very flat no power.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 24, 2018, 04:44:17 PM
Not convinced with these HT leads from euro car parts. Felt loose on one of the plugs. I've put cable conduit over the leads where they were touching other parts.

Think I'll be ordering others

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 24, 2018, 06:22:51 PM
Clive will have magnecor leads in stock id give him a bell after xmas break.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 25, 2018, 10:59:21 PM
Surprising how fast this car is.
Hyundai i30 N 68 plate (270hp) didn't have a chance off the lights.
He was that embarrassed he wouldn't pull up next to me, instead he pulled off the ring road behind a police car. Made my evening!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 12:34:44 PM
Desperately needs a clean! (https://uploads.tapatalk-cdn.com/20181226/9ebcbc9669ac684ae69c2cc9fe14b684.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 12:35:23 PM
Clive will have magnecor leads in stock id give him a bell after xmas break.

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Sent Clive an email, not trading till after Christmas. I can wait

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 26, 2018, 12:55:35 PM
Desperately needs a clean! (https://uploads.tapatalk-cdn.com/20181226/9ebcbc9669ac684ae69c2cc9fe14b684.jpg)

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Now is that a 3.5 or 3.75?
I know my mk1s but not so much on mk3 nc's

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 12:59:05 PM
Mk3.5 or NC2 as the yanks call it.
2010 reg.
20th anniversary.

Its a cat c. Had an impact early on in life @ 26k miles. All air bags went off.
Front end doesn't like great but it will do!


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 26, 2018, 01:01:59 PM
Nothing wrong with abit of salvage...my scoobys a cat C and my colt a cat D. Had loads of the years, theres a copart 5 mins from my house i was in there viewing a potential purchase friday.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 01:04:36 PM
Just annoyed an 18 plate ford focus rs. Love this car

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 26, 2018, 01:10:22 PM
Lol...strange that rx8s dyno lower than quoted figures but they go up the road pretty well. Had a few scalps myself with Rx8s over the years especially involving bends.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 01:28:21 PM
Lol...strange that rx8s dyno lower than quoted figures but they go up the road pretty well. Had a few scalps myself with Rx8s over the years especially involving bends.

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It does go pretty well.

Still going easy with it to be honest. Had a pretty serious crash when I was 18 and stupid. 115mph into 10 trees one after another. Very lucky to be alive.
Won't be doing that again.
Can find the photo of the front of the car, that was a sight to see. I ripped the engine clean out and cracked the inlet manifold in 2.
(https://uploads.tapatalk-cdn.com/20181226/3de54f66bd2f9e23f5a8245b4b5206cb.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 26, 2018, 01:48:13 PM
Scary...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 01:54:10 PM
Is there any recommended things to do on mazda edit with the map or leave well alone?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 26, 2018, 02:03:24 PM
I sent my pcm off to a guy on the rx8 forum. He did the basics like turning off 10 engine codes i only sent away as i wanted a 1100 rpm idle as at 850rpm i was getting 10psi oil pressure when oil hot...bit scary lol...so with 1100 rpm it does not get lower than 22psi and pretty good anti stall. Plus an unexpected bonus it cools down quicker idling.

I think some guys lean off for power increase but i wouldnt recommend that..
Then theres oil injection rate but i have no knowledge how to do that.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 02:06:28 PM
I'll probably raise idle based on that. Cheers.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 26, 2018, 02:09:04 PM
The clutch switch raises idle as well so if anything funny happens look into that side of things.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 26, 2018, 11:17:10 PM
... No caption necessary(https://uploads.tapatalk-cdn.com/20181226/a826823717191b473decc2c5a39957ea.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: re japi on December 27, 2018, 09:13:58 AM


Lähetetty minun E2303 laitteesta Tapatalkilla

Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 27, 2018, 02:57:15 PM
Or add your own caption...?

"Whos be overdoing it on the Sprouts"

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: re japi on December 27, 2018, 02:59:53 PM
Cant wait to get my car to split fire. And hopefully without apexes might turn screamer pipe towards pedastrians (dunno did I typed that right)

Lähetetty minun E2303 laitteesta Tapatalkilla

Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 27, 2018, 09:40:40 PM
The coils must of done the trick, no more P0301 codes.
Also mazdaedit now do launch control :) just waiting for the guy to get back to me.

Think the exhaust is also holding it back, going to look at fabricating one, might cut off the exhaust manifold flange where it tapers down and carry on the pipe size straight through. Probably be 2.75/3" all the way through.

@boosted : by the way the idle raise has worked a treat. 1k idle now and all of the stuttering has mostly dissappeared.

Is there a oil temp sensor on the rx8 s1's? Can't find it on my obd reader. Surely it must have one!



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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on December 27, 2018, 10:07:39 PM
No oil temp sensor . I find oil temp lags coolant temps by 10 deg c for 15mins...without an oil thermostat.
If you fit a sandwich plate on oil filter housing you can monitor oil press and oil temp. Essential if going on track not so much on road.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 28, 2018, 09:21:18 AM
No oil temp sensor . I find oil temp lags coolant temps by 10 deg c for 15mins...without an oil thermostat.
If you fit a sandwich plate on oil filter housing you can monitor oil press and oil temp. Essential if going on track not so much on road.

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Madness, can't believe mazda didn't fit one.

Had a response from mazdaedit/epifan... Not available yet. Does any one else find him extremely rude? Or maybe its the language barrier

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 28, 2018, 09:33:30 AM


No oil temp sensor . I find oil temp lags coolant temps by 10 deg c for 15mins...without an oil thermostat.
If you fit a sandwich plate on oil filter housing you can monitor oil press and oil temp. Essential if going on track not so much on road.

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Madness, can't believe mazda didn't fit one.

Had a response from mazdaedit/epifan... Not available yet. Does any one else find him extremely rude? Or maybe its the language barrier

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He's now offered to make it for $50 :)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on December 28, 2018, 11:49:20 AM
Excellent progress, loving the flamage  :violent5:  :thumbsup:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 28, 2018, 04:36:03 PM
Pre mix has arrived.

Launch control activated, see what that's like later(https://uploads.tapatalk-cdn.com/20181228/814c74a83ea913538e22b702c29029c7.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 28, 2018, 04:36:48 PM
Catch tank is filling up quick. Must be all the cold weather (https://uploads.tapatalk-cdn.com/20181228/ca3a6b3d496025b40cf4d860784232cb.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on December 31, 2018, 05:10:41 PM
I spotted a small patch of oil underneath the car earlier and peered through the bumper....
I've had 2 no 90' 10an fittings fail simultaneously. Great.
Glad I spotted it.
(https://uploads.tapatalk-cdn.com/20181231/1c7dc9b8874a6a60ffcc21f7b3dbb8e9.jpg)(https://uploads.tapatalk-cdn.com/20181231/21d81a78561fd87a571b29eb67f89029.jpg)

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(https://uploads.tapatalk-cdn.com/20181231/95c6e0d347cabb4bc96ed7d39ff59452.jpg)
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 01, 2019, 07:43:22 PM
Gone for a slightly different design from an English manufacturer /seller.
Tight 90' instead of pulled bend. I think the pulled bend had deformed the seat of the swivel.
Hopefully the nut swaps over as I doubt I'll get that off the old pipes(https://uploads.tapatalk-cdn.com/20190101/d9b298fb952bc5d88879a508910a1bc7.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 04, 2019, 10:38:02 PM
Back up and running. All seems good.
It has the odd spell where it is a bit boggy and pops on great change but seems to clear. The injectors are probably tired

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 05, 2019, 06:08:04 PM
I'm looking at installing oil pressure and oil temp digital guages below the stereo.
What do I need the oil temp gauge to read to? 110'c or more?
I've know what I'm doing with the sandwich plate, that's fine.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 06, 2019, 07:36:33 AM
0 to 150 pressure and temp or thereabouts.
Max temp 110 at a push 115...depending on oil used.
Ideally you want see oil above 80deg c normal running.
And pressure above 100psi on a pull...its idling that was my concern at 850 idle rpm oil pressure is low..on my car in the teens hence the 1100 rpm i have.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 07, 2019, 09:19:16 PM
Ok cheers ill look into it.
It hesitated really bad changing gear accelerating hard yesterday. Need to try and figure out what it could be.

What symptoms did you have with the mx5 you converted?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 07, 2019, 09:36:22 PM
Is that what you meant by the regulator mod boosted? (https://uploads.tapatalk-cdn.com/20190107/e7858985c90193125a6db3bf49d78004.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 07, 2019, 09:40:06 PM
That's the mx5 pump equivalent (https://uploads.tapatalk-cdn.com/20190107/19abf04b35d26affdd568a592b688b61.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 07, 2019, 10:23:33 PM
Yes thats its...
The 1 was involved in was fine for the few miles i had.
Hesitate to change gear? Or hesitate to rev?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 07, 2019, 11:28:13 PM
It was hesitant after changing gear for a split second when the throttle was flat down

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 08, 2019, 05:27:14 AM
Could be anything mate tbh..anything on code read?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 08, 2019, 12:31:36 PM
Nothing...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 13, 2019, 08:14:54 PM
An I right in thinking that I won't get the STFT or LTFT as I havent got the narrow band lambda fitted?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 13, 2019, 08:18:15 PM
Standard precat o2 sensor should give you the fuel trims. The pre and post 02 sensor are different...got the right 1 ?
Are you still having some gremlins?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 13, 2019, 09:27:22 PM
It was just out of curiosity really. Definitely right sensor or I wouldn't be getting afr readings.
Things went OK tonight, took it for a run. Badly need new tyres, these are death traps. Rear breaks loose without reason on small corners.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 20, 2019, 07:12:41 PM
Still waiting on a vid or 2 ? Nothing incriminating of course!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 20, 2019, 07:42:39 PM
See if this works
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 20, 2019, 07:43:25 PM
See if this works

You need vlc player if viewing on phone
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 20, 2019, 07:47:47 PM
It downloaded to my phone but failed to play...ill look when at laptop.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 20, 2019, 07:57:09 PM
You need to download vlc player on app store. Mpg format

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 20, 2019, 08:08:42 PM
Will do after the snooker..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 20, 2019, 09:02:01 PM
No Dice on laptop....just got sound.... :great: need access password which ive forgotten to download codec software :violent1:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 20, 2019, 09:06:26 PM
Download VLC player on the play store(https://uploads.tapatalk-cdn.com/20190120/686c9cc64cf69044260d9e000be74adc.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on January 22, 2019, 10:23:18 AM
Got it!!! finally after trying quite a few blimin passwords  :13: goes well!!! you got no rev limit beep? some of my 8s didnt beep.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 22, 2019, 04:37:27 PM
Didn't take it high enough! It still beeps!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on January 22, 2019, 06:14:19 PM
Yep, it certainly seems to accelerate well in that vid  :13:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 22, 2019, 06:55:24 PM
That'not even full throttle to be fair. Was a bit sketchy that road.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on January 25, 2019, 07:46:14 PM
Drive it to work this morning. Going well :) might get tyres this weekend if I get chance.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 09, 2019, 12:50:13 PM
Still got the hesitation under hard throttle. Need to yank the pump out

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 01:19:24 PM
if your gonna pull it out may as well stick a walbro in there. Clive has them at MRP.  what rpm is the hesitation?
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 01:37:08 PM
tried googling fuel flow ratings....fail....so went for fuse ratings of fuel pumps...i.e current draw being directly relatable  :violent1: Rx8 fuse pump rating is 20amp...What is a fuse rating of  mk3 mx5?
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 01:44:26 PM
found it, mk3 and 3.5 fuel pump fuse rating is 15A....so with fuzzy logic must be smaller pump.... :dontknow:
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 09, 2019, 02:39:34 PM
I went for a uprated pump in the end. I think the pop off valve is causing me issues

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 02:57:04 PM
I fitted a gauge on mine and could see when booting it going from 4bar down to 2.5bar...i had a hole in the white convoluted pipe id fitted...rather than warm up ends in hot water to fit i flashed with a heat gun...tiny hole.
The pop off i was led to believe is a very rare occurence and when it goes it comes off completely.
I bought a little systec inline adaptor and gauge in expensive showed me what was going on..
Could still be you port opening? Early 8s did not have a fault code for the ssv in the pcm...my car had the sensor but not the code i only discovered by changing pcm...
You should be able too see it with mazda edit i would have thought?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 03:01:34 PM
Easy check of vacuum chamber is pull the vac line off ...should make a psst noise as air rushes in. Unstarted as vac is stored...and could swap vac lines out to vdi ssv and air pump...plus the plugs as solenoids all the same...just dont mix them up...that would rule of vac leak and solenoids.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 09, 2019, 03:14:31 PM
I did have a ssv fault a while ago but I thought that had fixed itself. I bought a hand held vac pump so I'll test it.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 03:16:49 PM
Worth checking...only take 10 mins...
Before pulling fuel pot which is a pain if you get the systec tester and it stays at 4bar all the way to redline you know the fuel system is good...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 09, 2019, 03:22:17 PM
Handy diagram (https://uploads.tapatalk-cdn.com/20190209/5dbf0e38fa1750e0a9297930a64c8a4c.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 09, 2019, 03:24:07 PM
Yep. Got that printed out.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 04:00:48 PM
I've checked both actuators seem free. One is a bit squeaky, going to spray with lube.
Vac Reservoir  is holding fine.
1 way valves round correct way.
Only thing I can think of is a sticky solenoid.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:11:50 PM
Static there is no way to test as not seeing rev range. However if you put 12v on the soleniods they will work.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 04:20:48 PM
I did have p0076 before. I'm going to swap the vdi solenoid for the unused vfad

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:23:08 PM
Or the airpump if not using it?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 04:39:56 PM
Or the airpump if not using it?

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Sorry that was the one I meant.
Do you know which plugs do what on the solenoids?
Blue, Black & White plugs

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:41:12 PM
Its on the drawing mate..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:43:35 PM
The plugs are blue red green..the soleniods are black...worth following coloured plug to black vac line to vdi ssv etc.
And if you not using airpump. Pluging the vac line.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 04:44:39 PM
Not for me? (https://uploads.tapatalk-cdn.com/20190210/3af70c11cff2e22996febc9249c59225.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:45:35 PM
Ill go and look at my car...lol...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 04:50:56 PM
Black - vdi
Blue - sap
White - ssv

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 04:51:21 PM
Traced wire colours(https://uploads.tapatalk-cdn.com/20190210/0772ab641786dd7490149f8212b7524e.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:51:47 PM
Remember now.. the vac black pipe is colour coded...white SSV blue airpump black vdi(https://uploads.tapatalk-cdn.com/20190210/de3581aa2fa6ad651b02ed511fcca7de.jpg)(https://uploads.tapatalk-cdn.com/20190210/0ebcad7926966389150cf0943496a172.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:52:50 PM
We concour..!!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 04:56:55 PM
Lol 2nd time in 6 months the dusty bonnet has been taken off...when i take it for a blast gonna scare the life outta me...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 05:00:26 PM
Both vdi and ssv have sensors to check there working and would generate a code if not...unless old pcm like mine was for ssv...but its not a hesitate its a hard cut if not working.  The apv ( motor) cycles on ignition start up check 

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 05:05:04 PM
I've only got a sensor on the ssv. None on the vdi

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 05:08:35 PM
Im sure mine has....know im not so sure...but im not going out to garage again ha ha...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 05:09:26 PM
I've got one in the pic. None on the vdi.

Thanks much appreciated(https://uploads.tapatalk-cdn.com/20190210/9cffe74058ada7e2ba8739c99d3021d2.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 05:12:01 PM
Shows a sensor on ssv can't see one for vdi(https://uploads.tapatalk-cdn.com/20190210/72b93ff6546fc62d83489bcdaef677c1.jpg)(https://uploads.tapatalk-cdn.com/20190210/59de946272a69e8284e0ce1d8b09ccf6.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 05:16:25 PM
I looked at a vdi on ebay...nope no sensor onit to confirm operation...well today a school day for me i thought there was...well there should be 1...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 05:17:49 PM
Which would explain if it doesn't operate properly you don't get any codes

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 05:30:36 PM
Yep, which is what i had when my SSV was not happening due to early pcm not having the fault code....does it Move freely should be able to operate it with a finger and then 12v bridge coil to operate?
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 05:34:19 PM
I've charged up the vac tank and put 12v on solenoid and works perfectly. Got to do ssv next

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 05:39:29 PM
Ssv takes a lot more vacuum to move. But it moves

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 05:50:27 PM
I fired mine by bridging and i remember it moved very quickly but that was the vacuum in the cannister so no idea what the value was...the pressures are in the manual...
I bridged so i coukd test whole system..my ssv fault was literally bad connection at soleniod plug..i squeezed the pins together and problem solved...
I just went though the elecy drawings looking for a vdi switch ...nope none there lol...
I had another rx8 engine loom so i just cut plug off and put 12v onit to test...
If your SSV wasnt working youd get a code...


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 06:10:06 PM
Catch can fills up bloody quick. Might of figured the hesitation issue...
I leant me friend the car and don't think he checked the catch can properly.
It was basically full and pulling shit into the inlet (https://uploads.tapatalk-cdn.com/20190210/ff8be9b645dd519aba9b7a595d7b7fcd.jpg)(https://uploads.tapatalk-cdn.com/20190210/246829f7d2a37b6379e3fd930ba4c65d.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 06:20:03 PM
Mmmm. Is it all over maf? How bigs your catch tank? Should NOT really be filling it on the road! Oil level no more than 3/4 any more and the car will burp oil up filler neck..i dont get any now as i have gated sump.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 06:50:24 PM
There was a bit over it. Not a huge amount. I think it's gone into the engine and its had a hard time burning it off. It filled up the same before the engine rebuild.
And I don't think my oil cap is sealing properly

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 06:53:45 PM
Before the gated sump i ran for abit vented to atmosphere so couldnt make a mess in inlet..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 06:59:08 PM
Before the gated sump i ran for abit vented to atmosphere so couldnt make a mess in inlet..

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On the rx8 I broke for the engine the previous owner had vented it down near the subframe and EVERYTHING was rotten.
It put me off hence running it back into the inlet.
I've just read something about over filling out with oil and sucking in through oil filler tower.
I did have it overfilled. (https://uploads.tapatalk-cdn.com/20190210/e8a2d64a807a73d6312f40778e0ce464.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 07:00:43 PM
Yep big no no. 3/4 max. Should stop it filling tank.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 07:01:20 PM
Put my mind at rest

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 07:04:00 PM
Thing is on your fresh engine youll be getting minimal blowby, worn out old engine like my fd i get a fairbit...its actually an oil burp up the  oil filler on right handers caused by surge its a rotary thing..esp. on track...so 3/4  should stop it.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 07:20:51 PM
Thing is on your fresh engine youll be getting minimal blowby, worn out old engine like my fd i get a fairbit...its actually an oil burp up the  oil filler on right handers caused by surge its a rotary thing..esp. on track...so 3/4  should stop it.

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Thanks.

Just thinking about it I filled up in the dark and it was massively overfilled. Would explain it.
Going to take it for a test drive with the vac lines tested. I closed the pins up on the plugs also.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 07:25:57 PM
Cool fingers x.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 07:52:25 PM
Boosted Does yours build up mayo under the oil cap

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 10, 2019, 07:54:05 PM
Yes mate..just moisture n oil mix..nothing to worry about...defo not headgasket failure....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 10:22:42 PM
Not sure what it was exactly but seems to be fixed. No bogging under hard accelation.
Desperately need tyres, I know I keep saying that! Want to get matching alloys first before getting tyres and it's difficult to make my mind up on which ones I want!

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 10, 2019, 10:27:28 PM
Quite like the JR3 but also I big fan of deep dish steelies(https://uploads.tapatalk-cdn.com/20190210/59b6f83a44bc837e51a863907a2877d8.jpg)(https://uploads.tapatalk-cdn.com/20190210/f47cfde463efd20288b8e24550d4f236.jpg)(https://uploads.tapatalk-cdn.com/20190210/77c8297c16f0de9ceeaebfc8e9235fbf.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 11, 2019, 10:04:01 AM
I like the Japan Racing 1s...had some on my wifes MR2 a few years agos...seemed very well made and finish was excellent and lasted.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 19, 2019, 04:45:50 PM
Paul, you considered coming to the Castle Combe JDM day? We share the clubstand MRC with RX8club...its usually a big stand and really friendly and lots of the rx8 owners are gonna be well interested in your car...
Its totally informal and all welcome theres no snobbery just a bit of banter here and there.  Chance to meet a few faces on here too. If theres 1 show its JDM combe best of the year.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 19, 2019, 05:09:00 PM
What date is that on?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 19, 2019, 05:13:19 PM
Saturday 1st June...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Casey on February 19, 2019, 07:15:28 PM
I'll be there, probably in my RX-8, but might bring KIMI 2, will decide nearer the date  :)
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 23, 2019, 07:32:58 AM
Where do I tickets etc

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on February 23, 2019, 07:37:33 AM
Theres a thread somewhere ill link later...theres an exclusive track session too...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 23, 2019, 07:47:14 AM
Theres a thread somewhere ill link later...theres an exclusive track session too...

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Ohhh. Need those new tyres I've been having on about but need alloys first lol

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 23, 2019, 06:12:41 PM
It seems to be running a little lean under light acceleration.
Any ideas? Went down to 16 at one point(https://uploads.tapatalk-cdn.com/20190223/8b7a829cb8a2b7aa10894b29198ab8e8.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on February 23, 2019, 06:14:55 PM
C = commanded
M = measured

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 02, 2019, 08:50:22 PM
Boosted, would you mind just talking me through what I've got to do with this again? (https://uploads.tapatalk-cdn.com/20190302/77272dae2d91055bc1d12f7f60f5ef46.jpg)(https://uploads.tapatalk-cdn.com/20190302/0e653aab33b5825a702e4fe1e17ae862.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 02, 2019, 08:55:23 PM
Thats an mx5 1...deffo different to rx8...ill do some googling.....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 02, 2019, 08:59:16 PM
I'm wondering if the rx8 fuel pressure reg will swap over(https://uploads.tapatalk-cdn.com/20190302/5b752c2231f100ebaa95af14df15565a.jpg)(https://uploads.tapatalk-cdn.com/20190302/0cd3c085fb961d025b69501d39ac2911.jpg)(https://uploads.tapatalk-cdn.com/20190302/5440a377896e556d095601dcff70dda1.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 02, 2019, 09:00:37 PM
Looks like it will(https://uploads.tapatalk-cdn.com/20190302/64e6bff84c5adf2acf2aa6c45a3bd583.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 02, 2019, 09:30:03 PM
Going to source a rx8 fuel pressure reg unless any one has one spare?
I'm going to seal up all the holes on the pop off grille thing. It pops off inside the housing. The cap doesn't rise up like the rx8 one. Reg pressure is a lot less from what I can tell

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 02, 2019, 10:15:21 PM
Pm me your address ive got about 3 in garage...BUT..i really would hook up a pressure gauge if it holds 4 bars all the way to red line then the issue is elsewhere...
Trust me when i say this, ive been there....ive got 3 fuel pots and 2 walbros from testing...
Test not guess i had 2 or 3 issues afteermy install and learnt the hard way lol.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 02, 2019, 10:25:40 PM
Pm me your address ive got about 3 in garage...BUT..i really would hook up a pressure gauge if it holds 4 bars all the way to red line then the issue is elsewhere...
Trust me when i say this, ive been there....ive got 3 fuel pots and 2 walbros from testing...
Test not guess i had 2 or 3 issues afteermy install and learnt the hard way lol.

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I'll PM you.

I'm leaning towards that to be honest.
Might put standard pump back in. Not sure if I trust the one I have

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 03, 2019, 12:07:22 PM
S2 pump is the same as mx5 nc! (https://uploads.tapatalk-cdn.com/20190303/b055f6b364b5af618f1db0b77d262993.jpg)

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(https://uploads.tapatalk-cdn.com/20190303/a82a555a868ac95bc645cf91764805f8.jpg)

https://www.rx8club.com/series-ii-aftermarket-performance-modifications-162/official-s2-fuel-pump-thread-261755/
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 03, 2019, 01:51:46 PM
Got bored(https://uploads.tapatalk-cdn.com/20190303/5d52e3e2b6ed7018c619c662bf7fa3fc.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 03, 2019, 02:19:40 PM
Well after all of that I've had a bit of a brain storm. I've swapped over the rx8 fuel pump loom and the pump switches between high and low load. I have a feeling I've got a sticky relay. Just changing it now to see if it makes a difference

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 03, 2019, 02:40:56 PM
Or loop the resistor....no more low n high power..i did that from beginning saving weight....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 03, 2019, 02:43:57 PM
Looking at the 5 pot...looks like youve blocked the overpressure vent so fuel pressure will skyrocket...
The soldering iron trick is the clip that holds in the metal prv...melt it over so it cant (if it could) lift.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 03, 2019, 02:48:24 PM
I must be misunderstanding something then. The pic of the rx8 setup is to stop the pressure relief valve from opening. I've essentially done the same for the mx5 one. The actuator will still be regulating the pressure (which I haven't touched) I've just stopped the relief valve from opening and blowing out. (https://uploads.tapatalk-cdn.com/20190303/f59772a01888b37f9dcf37448a627e12.jpg)(https://uploads.tapatalk-cdn.com/20190303/2e74e2e324be1035644c686ef74901e0.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 03, 2019, 03:00:07 PM
Ok just checking, have not seen a mx5 1.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: clive on March 03, 2019, 04:23:55 PM


I would be interesting to know what pressure the MX-5 regulates the pressure at.

Reading these posts,  if you stopped the internal pressure regulator from regulating then it may be an idea just to put a regulator in the feed line and do with.

Best not keep running the car with those AFR's until you know whats going on.

 
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 06, 2019, 03:54:22 PM
Grabbed out my boneyard off spares..welcome anything you see...ive not got a complete fuel pot(https://uploads.tapatalk-cdn.com/20190306/d56de417c0fa6810671eac170fd8bc0c.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 06, 2019, 05:59:38 PM
The rx8 fuel pressure regulator looks different to mx5 one :(

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 06, 2019, 06:17:19 PM
Yes totatally different....does 5 tank have a syphon attached? Aa 8 tank is saddle tank...with hump in middle.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 16, 2019, 08:48:57 PM
There is a syphon assembly but its a strange setup. No saddle style tank.
Debating whether to take it for a drive now. Just getting over a cold and I need to get out of the house

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 17, 2019, 08:24:57 PM
Hi mate, pls fit a temp fuel pressure gauge. Youll be able to determine if you have genuine fault or not...
Test not guess, i was in the exact same scenario as you hence a boneyard of fuel pump bits and pieces...
The rx8 pcm would throw a code if lean running im sure. Id be tempted to try a maf sensor too.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 23, 2019, 06:11:53 PM
Hi mate, pls fit a temp fuel pressure gauge. Youll be able to determine if you have genuine fault or not...
Test not guess, i was in the exact same scenario as you hence a boneyard of fuel pump bits and pieces...
The rx8 pcm would throw a code if lean running im sure. Id be tempted to try a maf sensor too.

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Haven't got round to it yet but will do.
I keep getting a misfire at 4.5k annoyingly

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 24, 2019, 04:17:26 PM
Or loop the resistor....no more low n high power..i did that from beginning saving weight....

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How did you "loop" the resistor?


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 04:21:39 PM
Get the resistor...cut the plug off in the middle of the wires...join the 2 wire ends ..no more resistor dropping voltage. Plug back in.
The fuel pump relays will still swap but there not changing voltage.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 04:21:59 PM
Get the resistor...cut the plug off in the middle of the wires...join the 2 wire ends ..no more resistor dropping voltage. Plug back in.
The fuel pump relays will still swap but there not changing voltage.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 24, 2019, 04:23:27 PM
Get the resistor...cut the plug off in the middle of the wires...join the 2 wire ends ..no more resistor dropping voltage. Plug back in.
The fuel pump relays will still swap but there not changing voltage.

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Thanks.

Had a weird symptom earlier where it felt sluggish and then felt like a turbo kicked in.
I think the resistor Is pooped and not swapping to high power.


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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 04:25:15 PM
Its a quick thing to try, or again youve got port opening issues....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 04:25:27 PM
Its a quick thing to try, or again youve got port opening issues....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 04:25:57 PM
Blimin phone..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 04:27:27 PM
Echo in here today...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 24, 2019, 05:05:51 PM
Might be the problem! (https://uploads.tapatalk-cdn.com/20190324/87f0acb1fc87fd0de7a5fe58690b69dd.jpg)(https://uploads.tapatalk-cdn.com/20190324/06b3a15d3719cc7545b53ac5c037d4bb.jpg)(https://uploads.tapatalk-cdn.com/20190324/2c5d5a749785b2ddc6f4b43e10fea22c.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 24, 2019, 05:15:17 PM
Fuel pump sounds very eager now(https://uploads.tapatalk-cdn.com/20190324/0db0be8d345093286bf020584d2bcbe3.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 24, 2019, 05:56:59 PM
Strangely I'm getting different STFT readings in 2nd gear compared to 3rd.
No STFT in 2nd gear and - 7.81 in 3rd(https://uploads.tapatalk-cdn.com/20190324/1a867e4e3863cb38116016ce7aa86a7d.jpg)(https://uploads.tapatalk-cdn.com/20190324/e2a586615d8bef504ff224d23104c0f5.jpg)

Just to note this is from earlier today before resistor delete
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 24, 2019, 05:57:22 PM
Its outta spec..what was reading 1.0 ohm?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 24, 2019, 05:58:13 PM
Its outta spec..what was reading 1.0 ohm?

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The resistor! It was out of shot of the camera

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 02:04:05 PM
Well done changing the HT leads and deleted the fuel pump resistor the mis fire has got sooo much worse. I'm going to change the plugs as well. But I think there's an issue with the high load electrical circuit

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 02:08:02 PM
Could this be a earth issue? Ive bulked up the  earths on my car and ring mained them all so not relying on chassis earth connections?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 02:08:59 PM
Possibly. I need to do a bit of write tracing

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 02:17:16 PM
I feel you frustration....i had a few sim issues with mine, stick with will be worth it.  Earth from battery straight to engine and link all engine sensor earths.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Jamie R on March 25, 2019, 02:35:03 PM
If that's the fuel pump resistor that used to sit underneath the air pump, Ive got one if you need it.

Im running an out of tank walboro style pump.

Jon can you confirm I don't need this? If so, its yours Paul if its any use.
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Jamie R on March 25, 2019, 02:43:12 PM
I think I should all the thread properly, turn out ya don't need one ! lol sorry
Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 02:45:52 PM
Thanks for the offer though

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 02:57:06 PM
The resistor is used to drop voltage supply to pump on low power, its not needed. Not sure of its function other than pump life tbh...

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 02:58:58 PM
That's leading plug number 2 (https://uploads.tapatalk-cdn.com/20190325/ed422b3f706824b7b9c14978a6b4dfe3.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 03:04:07 PM
Trailing number 2 (https://uploads.tapatalk-cdn.com/20190325/fc693b365abb9e61b0c8ac977cb1079a.jpg)

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 03:04:48 PM
Ive seen worse....

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 03:06:13 PM
Far bit of black on them? Oil? Are you premixing?

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 03:07:14 PM
Far bit of black on them? Oil? Are you premixing?

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Yes I am now. I didn't to begin with.
It was a fresh engine and I haven't changed plugs since first fire

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 03:09:24 PM
Cool, look abit black...lol mine have been for 3 engines...ha ha...mazda interval is 30k!!!  I decided on 9k ...so i got awhile togo yet..

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: boosted on March 25, 2019, 03:12:49 PM
Tan ideal, they seem to furr up with mileage like barnacles/ scale on ships hull...
Does not look like lean...theyd be white/ cracked from overheating.
Look ok apart from the blackness.
What ration premix...id be thinking no more than 150ml per full tank off super duper...as your still running omp.

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Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Jamie R on March 25, 2019, 03:26:04 PM
Is that a riddle?? LOL!

So its not needed?? ? ?



Title: Re: MX-5 NC with RX-8 231 Engine
Post by: Paul_13 on March 25, 2019, 04:03:21 PM
Trailing plug was had a lot closer gap than the first one I pulled out. Might explain things.
Still need to trace wiring but daughter is doing my head in at the moment.

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