Author Topic: UK spec vs Jap spec 3rd Gen RX7  (Read 3667 times)

Offline BlitzBoy

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UK spec vs Jap spec 3rd Gen RX7
« on: February 07, 2003, 03:57:22 PM »
Hi guys, I\'m a newbie so excuse the ignorance :D
I\'m looking to buy my first rx7 3rd gen, I notice the uk spec has
237 bhp and the jap spec 265 bhp, what other differences are there?. Also if I do purchase a uk spec what do I have do to reverse the detuning Mazda applied to the uk spec cars to get the
full house 265 bhp?
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

Offline bnaellis

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UK spec vs Jap spec 3rd Gen RX7
« Reply #1 on: February 07, 2003, 04:14:14 PM »
Blitzboy Go to General section on this forum and  open the thread below. Should ahve all the details you require if you read through the messages.

regards

Brian Ellis
Help on G3 RX7

Offline BlitzBoy

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Pre Cat
« Reply #2 on: February 07, 2003, 04:41:51 PM »
Thanks for that  :)
from what I read from the post it seems, that the main thing restricting th uk spec to 237 was the addition of the pre cat where as the Jap spec ones have only the main cat, therefore more restriction in the exhaust causing the power to drop, is this assumption true or not?
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

Offline Grizzly

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UK spec vs Jap spec 3rd Gen RX7
« Reply #3 on: February 09, 2003, 12:09:18 AM »
If you get the Chance buy a UK one!

They are very rare and have high spec (there basicly R1/2\'s ) my best mate owns a Uk spec Rx7 gen 3 and gets offers for it every where he goes.

They are lower bhp due to the lower Boost (easy to fix), the thing is the Jap imports are run on higher Octane Fuel so the power will be down in the UK and the other thing i dont like about Jap Imports is they are built to last 3 years so they dont get wax oiled etc (corrosion protected) and wont like the UK weather.

If you want to talk to some one that owns a UK spec Rx Ither Give me your E-Mail or i\'ll get u in contact with him.

Chris

HPI_UK

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UK spec vs Jap spec 3rd Gen RX7
« Reply #4 on: February 09, 2003, 05:17:23 PM »
Quote
Originally posted by Grizzly
If you get the Chance buy a UK one!


the thing is the Jap imports are run on higher Octane Fuel so the power will be down in the UK and the other thing i dont like about Jap Imports is they are built to last 3 years so they dont get wax oiled etc (corrosion protected) and wont like the UK weather.


Chris



Ummm rubbish! Built to last 3 years???? how do you figure this out?? We import cars new from Japan like the R34 Skyline, i think it will be built to last longer than 3 years, or do you think this is why we pay more for our cars than the Japanese??
If a vehicle isn\'t undersealed in the UK it will rust after around 3 years on the sills, if you get it under sealed for a mere £60 it wont rust. I haven\'t seen any rusty UK imports unless they aren\'t proofed and have been in the country for a few years. Jap RON is 102, just use optimax and an additive and it will run sweet as the stated bhp.  Admittadly the UK spec RX-7 is better equipped and rarer but the prices show that.....

Cheers

Adam.

Offline Grizzly

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UK spec vs Jap spec 3rd Gen RX7
« Reply #5 on: February 10, 2003, 12:06:39 AM »
Ok how do i figure this out!

For a start i am a Body man so i\'ve see part of cars many dont, i\'ve personaly worked on lots of jap imports and todate never found one that had cavity Wax protection (ok they do have some protection agains stone chips on the Floor). You tend to find due to the Heat in Japan/US the Wax is ither very thin or not there at all.

I am guessing not many people think about Rust protection but being in my trade i do, the reason i say its made to last 3 years is becouse the cars are not treated kindly and the Emision laws are very strict (especaly around the towns and Citys) so you tend to find they dont keep cars long.

The main reason for having Little Rust protection is to keep build costs down (Why have somthing thats not needed?)

I am not making this up! I have seen it with my own eyes and can post Pictures of inside box sections and inner quaters if you like.

The reason you find Rusty UK examples is the fact the cars have been exposed to our wet? Damp Climate for years! most imports are new in and have not had time to show signs. Have a look at 10 year old Jap (UK spec cars) that have been wax oiled etc and imagen what a car without Protection is going to look like in our less sunny Climate.

Last thing is who puts Aditive in every tank of fuel to make 105 Octaine fuel? I have rebuilt a Nissan GTI-R becouse the guy ran had the car build in japan (425 bhp) then had it shiped in, ran it on the Drag strip and was Puzzled why it would Melt spark plug all the time? it just ran so lean (big jump 92-105?), ended up blowing a hole in a piston, that was just bad luck on his part but little things all add up?

I only like to go of my own first hand Experiance.

Chris
« Last Edit: February 10, 2003, 12:26:38 AM by Grizzly »

Offline Grizzly

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UK spec vs Jap spec 3rd Gen RX7
« Reply #6 on: February 10, 2003, 12:22:04 AM »
I admit a Uk Car is\'nt that much diffrent than a Jap Car its people that import them and dont think of this sort of stuff.

I am not saying Jap imports are Crap! i am trying to say there are alot out there that have not been corosion protected! and just becouse a Jap car is 300bhp in japan it dont mean it will be 300bhp on our fuel (without aditives)

I personaly run my car on Optimax and there is a noticable gain between 92 and 98 (I think is 98?) but then Diffrence between 98 and 105 must be the same again?

Do you think I\'m wrong?

Chris
« Last Edit: February 10, 2003, 12:28:33 AM by Grizzly »

Offline BlitzBoy

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UK spec vs Jap spec 3rd Gen RX7
« Reply #7 on: February 10, 2003, 09:22:59 AM »
At the moment waiting for my insurance money coming through,
as some guy smacked into my 300zed a couple of months ago.
If I had the money this week I had the oppurtunity to buy a uk
spec :( oh well only a couple of weeks to wait.

:) thanks for the info, yeah fuel has a lot to do with it, I suppose something like a Power FC will overcome these problems with timing and fuel, I mean the ameriacans run on cr$ppy fuel 90 ron I believe, and still able to run 450 plus with big single turbos.

But a RX7 with 300 bhp will be a lot faster then a skyline or 300 with the same power due to weight adavantage, this is why I want one!! plus its a good looking car
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

Offline Grizzly

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UK spec vs Jap spec 3rd Gen RX7
« Reply #8 on: February 10, 2003, 06:23:29 PM »
Yeh 450 bhp is easy to get but keeping it Drivable is the key.

BTW you are spot on, Fitting a Power FC etc will just get rid of the fuel problem, i would still run it on Optimax still but then the Uk,Jap or U.S car will run the Same HP on the same fuel.

I was refering to this UK car is only 237 bhp thing, basicly the UK car is a R1/2 with the boost turned down.

Chris

boltoa

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UK spec vs Jap spec 3rd Gen RX7
« Reply #9 on: February 11, 2003, 11:30:44 AM »
Just to clear up a common misconception, fuel octane numbers in the states are calculated using a different spec (actually (MON + RON) / 2). So you should add 4-6 points on the US spec to get the European equivalent.

Just thought I\'d clear that up :).

Andrew

Offline Jus

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UK spec vs Jap spec 3rd Gen RX7
« Reply #10 on: February 22, 2003, 01:58:10 PM »
PROS for UK Car

Mileage is more likely to be unchanged...

Plenty of receipt from genuine rx7 repair shop/shops

Engine rebuild receipts

Those shop/shops should give you history regarding the maintenance etc...

Fully loaded

More skirting

Cheaper insurance

Rare

Cons

Higher (genuine mileage) mileage

Check for wear and tear

IN MY OPINION...

However, many imports are a real deal but... obviously my 1st choice would be a UK model.

Jus
1994 UK SPEC

Phranque

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UK spec vs Jap spec 3rd Gen RX7
« Reply #11 on: February 23, 2003, 06:52:07 AM »
Let me say at the outset that I am no car expert.

However, before I retired I had a TV retail business. I can well remember a Japanese manufacturer\'s rep telling me that the spec of Japanese domestic equipment exported for the UK market was nothing like as tight as the spec for their home market. This - he said - was because the expectations of a UK consumer were much less than those of a Jap consumer, that is, the UK consumer was quite used to having stuff blow up and not work right so ANY improvement over that was a bonus.

OK - this was many moons ago and I doubt if it applies as much these days and maybe not at all with cars - but nevertheless I\'ve thought of what he said many times - many times !!!!

Offline Grizzly

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UK spec vs Jap spec 3rd Gen RX7
« Reply #12 on: February 23, 2003, 12:16:28 PM »
Where where the Uk Cars Made? Am i right in saying the UK FD was built in Holland?


"was because the expectations of a UK consumer were much less than those of a Jap consumer, that is, the UK consumer was quite used to having stuff blow up and not work right so ANY improvement over that was a bonus."


This is a bit odd as the UK cars came stock with a much higher spec than the stock Jap car? + they ran lower HP so where less prone (stock to blow up! then for those who have seen a uk car close up they have more spoilers and look a bit diffrent.

Dont get me wrong the Jap cars coming over have lots of aftermarket goodies on but as Jus says they have no history? (Service and crash) give there geting very common where as the Uk one\'s numbers will never go up (making it rare and sought after).

I would have to say if i was on the Market for a Fd Uk is the way i\'d go! this is due to the High spec and they where made for our Damp and Cold conditions.

Chris

Offline richrx

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« Reply #13 on: February 23, 2003, 12:42:01 PM »
hi, i was just reading through your wee debate there and was interested in what was said about the power fc. I\'ve heard of the power fc before but im unsure of what it is, i would think that it could be a piggy back chip. Is that right?

Phranque

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Grizzly
« Reply #14 on: February 23, 2003, 12:48:36 PM »
I may have mixed you up. It was domestic electronic gear I was talking about, purely as an example in principle. This was my field when I was working. I\'ve no idea at all about cars - thicker than 2 short planks, in fact!