rs4 v8 twin turbo?

[P_G]

Tweeked Monaro ?

And a big pair of betty swollocks! There used to be a tuning house at Silverstone with an 820bhp Monaro and the car's owner asked them to turn the boost down because it was so damn scary.

[mattysupra]

Thanks for the replies everyone.


To answer a few in one post

- I know the compression ratio will need to change. Of course i will be changing this. I plan on running the engine at different stages and i guess something will fail. But there is no way around this if im the first to see how far you can push the standard internals.

- as for Hp against torque. I plan on making simular figures in torque also. BHP is no good with out torque! Im not a rev king so looking for peak BHP at around 7500rpm. Sure i can make the engine rev alot more but normally pointless.

- someone said get a porsche or GTR, well i already have a R34 GTR. Im sure your talking about the new GTR, to be honest it has to many problems with it at the moment and cost double what a rs4 does. Also its not built like a Audi. One thing i miss about my RS6 is the build and trim. However, if i dont get a RS4 im looking at a 996 turbo. But i would like 4 doors!

- The rs4 gearbox etc, yes i expect them to break. I wont be installing the same parts on the rebuild. Bit like the DRC issues, that would be the first thing in the bin and replaced with bilsten or simular. If something breaks i will replace and it wont be with standard audi kit.

- Other car sugestions, i want 4 wheel drive! I want a RS4 LOL. (always have.)

- as for solihull audi, i know them down there well, mates there tech mechanic and im on first name basis with the staff, they used to service my RS6 and not long ago purchased a A3 of them. But last visit there they had no rs4's in stock. I went there maybe 3 years ago to purchase a RS4 and ended up with the RS6 instead!

[lengster1]

It has been done as ive talked to a test driver of audi who drove it,never went into production as it would of been priced out of its sector and sit nearer lambos etc but it was tried in development stage so must physically fit,more than that i dont know but am working back at the german company i met him at so may see him again.....

[mattysupra]

It has been done as ive talked to a test driver of audi who drove it,never went into production as it would of been priced out of its sector and sit nearer lambos etc but it was tried in development stage so must physically fit,more than that i dont know but am working back at the german company i met him at so may see him again.....

Thanks for that info.

[mattysupra]

Is there anyone on here that could spare a few minutes and take some pics for me please of the area around the exhaust mans please. Picture with a tape maesure for reference would help lots.

Thanks in advance

[SR71]

I'll eat my hat if you can twin turbo a B7 for less than the cost of what it takes to buy either a 2nd hand C6 RS6 or a GTR.

You're looking at £40K for a supercharged one running ~500hp even if you pick up an old 55/06 plate aren't you?

I'm sure the GTR boys will be along in a minute letting you know that the car will go into the 10's with just a Cobb... I'm sure you know that already.

Still what is the raison d'etre of the car?

Because you can??

[xyber]

I saw a development thread back along for a nitrous setup and the first thing to go was the rods. They buckled at 500ftlb.

If it where me, I'd have to just go for a 996TT

[mattysupra]

I'll eat my hat if you can twin turbo a B7 for less than the cost of what it takes to buy either a 2nd hand C6 RS6 or a GTR.

You're looking at £40K for a supercharged one running ~500hp even if you pick up an old 55/06 plate aren't you?

I'm sure the GTR boys will be along in a minute letting you know that the car will go into the 10's with just a Cobb... I'm sure you know that already.

Still what is the raison d'etre of the car?

Because you can??

sorry mate i dont understand, what do you mean by Cobb.. ?


and what do you mean by "Still what is the raison d'etre of the car?"

O and dont worry about cost, im not asking for prices on how much it will cost. I know how much it will cost upto the first failer, i can guess how much teh secound failer will cost and i dont want to look at the costs of the 3rd failer.


P.S, you may aswell eat your hat.

[mattysupra]

I saw a development thread back along for a nitrous setup and the first thing to go was the rods. They buckled at 500ftlb.

If it where me, I'd have to just go for a 996TT

Really! rods went at 500ftlb??? surely not. I would of guessed they would take alot more than that.

Well if that is the weak link i can get rods enginered but they are the last part i would want to fail as they normaly like to pop outside the engine to say hello!


Thats a bit scary the more i think about it , i was guessing with boost that maybe the ringlands would fail maybe which is not a issue.


Who supply's rods/ pistons, bearings, rod bolts for the RS4? or are they still on the wish list for people who would like a quick Rs4?

[mark758]

MTM Clubsport RS6
0-60 3.6
217 mph
Audi
4 wheel drive

I suppose it's about whether you want something unique and enjoy the build process or just want the finished product on your drive to enjoy asap.

[mattysupra]

MTM Clubsport RS6
0-60 3.6
217 mph
Audi
4 wheel drive

I suppose it's about whether you want something unique and enjoy the build process or just want the finished product on your drive to enjoy asap.

Figures look impressive but do we have figures of what it can do.

as in -

quarter time
0-100
0-200



Thanks very much for your post.

[xyber]

I saw a development thread back along for a nitrous setup and the first thing to go was the rods. They buckled at 500ftlb.

If it where me, I'd have to just go for a 996TT

Really! rods went at 500ftlb??? surely not. I would of guessed they would take alot more than that.

Well if that is the weak link i can get rods enginered but they are the last part i would want to fail as they normaly like to pop outside the engine to say hello!


Thats a bit scary the more i think about it , i was guessing with boost that maybe the ringlands would fail maybe which is not a issue.


Who supply's rods/ pistons, bearings, rod bolts for the RS4? or are they still on the wish list for people who would like a quick Rs4?

I'd imagine nitrous and it's instant power, would be alot more stressful than boost though. Abit like yanking really hard a rope, rather than just hanging on it.

[adsgreen]

Nah - it's not as harsh as it sounds. Esp. most nitrous kits now are computer controlled. Not like the old days of dumping in Nox

The problem is the engine being fundamentally designed for NA power. NA power needs revs and to get revs you need to strip out the weight from the rotating parts. This is fine as it's torque that kills engine bits not power (as long as they are balanced well).
So you're starting with an engine that is comfortable with 300lb/ft peak and with well balanced and lightweight parts. As soon as you start stressing them with more torque you'll start to see problems all over the place. You'd probably actually be better off starting with the 4.2 from the S4 as this (I believe) is more limited on revs and not likely to have the same lightweight parts so perhaps a bit stronger.

To get higher power on the 4.2 you'd be better off looking at a mild FI and trying to get the engine up to 9k rpm but even then you'll going to struggle to get over 600bhp (thats before you start checking the drivetrain for balance issues).

Toyrque is overrated anyway

[SR71]

Cobb??

Check out GTROC site or http://cobbtuning.com/info/?id=4829...

Heffner have TT'ed a V8 R8 and its essentially the same block.

MTM Clubsport RS6 0-100kph 3.6 & 0-200kph 11.0

Over on audisrs the big power C6 boys run the 30-130mph days and I think they run ~11 for the interval.

But, really, you need one of these:

http://www.gtr.co.uk:80/forum/143061-am ... conds.html

Whatever else you have, aside from a turbocharged ZX12R, this will probably go faster.

[S4Player]

Hi there! I own the supercharged rs4 that was done by Mrc and it totally transforms the car I looked into tt and I spoke to doug about it and his honest opinion was it's too much of a pita to do I know there's a guy in the states doing some r and d on a kit at the moment! Stay tuned for the final results on my car as it still isn't finished but i reckon we may hit 550bhp and around 675nms of torque or so