Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: Jon_P on January 21, 2013, 03:07:30 AM

Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 03:07:30 AM
Hi all.

As some of you may remember, I bought a \'99 Type RS late last year in November. The car has been brilliant, other than the 2nd turbo going the other week sadly. I took the car up to Carl and the team at Hayward, and as expected, they were BRILLIANT. I genuinely cannot rate and praise the guys highly enough. Carl, Ian, Bradley and George are a great bunch and if you haven\'t used them before, then I HIGHLY recommend them. They swapped the turbo pack for a used twin pack same day and did a brilliant job.

Anyway. I have finally decided, with a bit of help from some mates and Hayward, what I want to do to my FD.

This is the list...

Respray in original colour of Mica Blue
18" Work CR Kai in bronze (open to suggestions and advice on widths and offsets)
Coilovers (this is where I am stuck and need advice).
Feed side skirts

That is where the exterior and handling changes end....

Engine wise:

Engine rebuild courtesy of Hayward Rotary
Street-port
Non sequential conversion on turbo\'s (keeping the twin set up)
Power FC and Re-map
Twin Apexi Induction Filters
Hayward Custom Intercooler and Radiator set up
De-Cat
MAYBE change the exhaust although it\'s aftermarket already (AutoExe cat back)

That, I think, is it.

My questions to yourselves are:

a) What fitment (width and offset) do you recommend for 18"s
b) What coilovers do you recommend? I want them for street and OCCASIONALLY track, but they need to be good on the road too as that is where I primarily use it!

Look forward to hearing your suggestions.

Thanks guys.
Title: General Update and a couple of questions
Post by: BlitzBoy on January 21, 2013, 11:07:10 AM
dont go non-seq, you will lose the early part (low rpm) of your power band and torque, if you have a fully working seq system keep it, people only tend to go non-seq if something breaks in the system. Off the lights and driving in town the seq car is the quicker car.
Title: General Update and a couple of questions
Post by: HaywardRotary on January 21, 2013, 11:14:29 AM
Happy to help Jon.
Feel free to call anytime for advice.
Regards
Carl
Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 04:28:09 PM
Thanks Carl.

BlitzBoy - I was under the understanding that yes the turbo\'s cut in later at the same time, but it makes the acceleration a bit quicker when they are both boosting together?
Title: General Update and a couple of questions
Post by: BlitzBoy on January 21, 2013, 04:41:55 PM
Well if you accelarating from a starting point of 1000 to 4000 rpm , the sequentials WILL be faster quicker spool, then from putting your foot down from approx 4000rpm then seq and NON seq will be the SAME.
Its a myth the NON-seq produce more power, seen it many times on the dyno, they end up being the same. In fact the highest power HP stock twins in the UK was sequential, the quickest stock twins on the quarter mile in the UK was sequential.

Two reasons why people go non-seq, one being if something goes wrong in the sequential twin turnbo components (eg rats nest/solenoids) so people simplfy and want a more reliable system.
The second reason some people dont like the transition on circuit when the second turbo cuts in at approx 4 to 4.5k rpm, they find it easier to drive in non-seq. Does not seem to bother the Japs when they do the touge runs in seq mode.
Title: General Update and a couple of questions
Post by: kevint on January 21, 2013, 04:52:13 PM
Quote from: BlitzBoy;848309one being if something goes wrong in the sequential twin turnbo components (eg rats nest/solenoids) so people simplfy and want a more reliable system.

Jon as you have a \'99 car it does not have the same rats nest as earlier cars, it is already simpler and should be more reliable.

Kevin
Title: General Update and a couple of questions
Post by: BlitzBoy on January 21, 2013, 04:57:43 PM
Yes agreed, the Black control/solenoid box, so only has to worry about some vacuum hoses, so another reason to keep seq in my eyes.
Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 05:05:09 PM
Very true. I just thought I would give it a try. I know it doesn\'t create more power as such as at the end of the day, it\'s the same. I do like the transition but I also like the idea of slightly better fuel consumption and for the same of trying I think I will give it a go. If I don\'t like it, I\'ll go back to sequential. Thanks for the input guys. It is much appreciated. Have any of you got some advice on the wheel sizes and/or coilover suggestions?
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 21, 2013, 05:18:24 PM
235/40/18 front
265/35/18 rear

Not sure on offsets but I like wheels with deep dish.
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 21, 2013, 05:21:01 PM
I used to have these on my fd. 35 offset, maybe stick a small spacer behind them to fill the arches out just right. No need to roll the arches either

http://ultralitewheels.com/taka.htm
Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 05:36:32 PM
Thanks Grant... Are you sure you didn\'t have to do any arch mod as my standard 17" catch on the front arches when the wheels are slightly turned and hit a bump....
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 21, 2013, 05:47:52 PM
No didn\'t roll the arches. But the fronts rubbed on the arch liner on full lock. I should have had the arches rolled though, could have made it even lower then :(

Just having a quick look for the right offset for those wheels you suggested.
Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 05:51:33 PM
Haha!! Yeah, I am looking at lowering mine, but not stupidly low. I still want it to be practical for our shoddy roads in the UK. I think I can get away without touching the rear arches but will do the front ones. Makes sense to get them done too as it\'s going in for respray soon, so can be done at the same time.

Thank you mate, appreciate that. When it comes to sizes of offsets, I\'m lost!! So I appreciate that.
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 21, 2013, 05:58:16 PM
Have a look here http://m.rx7club.com/showthread.php?t=605184 maybe you can see what is best.
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 21, 2013, 06:01:55 PM
As for coil overs I would suggest say your budget and look from there. There are a lot around, I honestly don\'t know the best ones.
Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 06:07:47 PM
Thanks mate. It would appear that 18.9.5 rear, 18.8.5 front, +38 offset all round is best and good fitment.

As for coilovers, I\'m looking at up to around 800GBP and would consider 2nd hand ones if in good condition :)
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 21, 2013, 06:11:54 PM
Try for some second hand ones. BC racing do full adjustable cool overs for ~£700 brand new but you could maybe get some better brand ones second hand.
Title: General Update and a couple of questions
Post by: Jon_P on January 21, 2013, 06:13:51 PM
That\'s what I was thinking... As long as they are in good condition overall, then I\'ll go second hand.
Title: General Update and a couple of questions
Post by: fil_auto on January 22, 2013, 10:32:37 AM
With that sorta budget I\'d say you\'d be far better to go for a new set of coileys! plenty of choice for that sorta cash... bit of a no brainer really.... you can also then choose your spring rates... BC, MeisterR... have a look on DW\'s :)

Phil
Title: General Update and a couple of questions
Post by: Grant Monkhouse on January 22, 2013, 11:13:46 AM
I was trying to think of another cheaper brand and fil has said it, MeisterRs defo worth a look at
Title: General Update and a couple of questions
Post by: rx7boy on January 22, 2013, 12:32:28 PM
I agree with blitzboy on this one, if the car has a perfectly functioning sequential system there is no reason to change it. I occasionally get to drive the misses FD and i\'m blown away at how well the sequential system works and delivers power. Unless its broke don\'t try and fix it.

Coilovers wise, these  HSD units (http://www.driftworks.com/hsd-monopro-coilovers-for-mazda-rx7-fd3s.html) are awesome, have them on all my cars now as they just feel great, super smooth at the lowest dampening setting and then nice and stiff for track if you wind them up.