c5 rs6 v8 biturbo engine in s4?

[fast_audi]

Hi guys, I am wondering if anyone has ever swapped the v8 bi-turbo coming from the c5 rs6 into an b6/b7 s4 engine compartment. I am seriously contemplating this idea instead of an supercharger. I wish I had the best of both worlds, an v8 and bi-turbos. The ssss can use a little bit of more power

[drew]

..

[B6JoeS4]

oh dear...........grabs popcorn...

[Silver B6 S4]

Not possible...

[sakimano]

so you want to swap what is essentially the same engine out for the same engine, but one that has two turbos on it? let us know how that goes!

The reason nobody has even added a single turbo to the B6/7 S4 (nobody who has spoken up anyway) is that there is virtually zero space under the hood...definitely not enough for the RS6 setup, which comes out of the MUCH larger C5 A6 chassis.

[V8weight]

There is not enough room for a 4.2L twin turbo in a C5 RS6 much less a B6 S4. And just to clarify in the simplest possible way, the rs6 4.2 is manufactured by Cosworth and is not even the same block (not to mention the other differences) as the S4 4.2. Wet dream busted.

[V8weight]

Hi guys, I am wondering if anyone has ever swapped the v8 bi-turbo coming from the c5 rs6 into an b6/b7 s4 engine compartment. I am seriously contemplating this idea instead of an supercharger. I wish I had the best of both worlds, an v8 and bi-turbos. The ssss can use a little bit of more power

Have you thought about just finding a friend with an RS6 to pull you around with a rope? RS6/S4......best of both worlds.

[draab29]

What about an exhaust turbo like this. Eliminates the need for room in the engine bay.

[highPSI-S4]

I could be way off as i can't even find a link anywhere. But like 4 years ago or so i read somwhere someone in europe was putting a RS6 motor in a RS4. It was Imola yellow, so if that project got completed then i think it would be possible. But again i have no creditable info.

[PetrolDave]

Hi guys, I am wondering if anyone has ever swapped the v8 bi-turbo coming from the c5 rs6 into an b6/b7 s4 engine compartment. I am seriously contemplating this idea instead of an supercharger. I wish I had the best of both worlds, an v8 and bi-turbos. The ssss can use a little bit of more power

The main reason the S4 engine has chain driven cams is to make the engine short enough to fit in the engine compartment, the RS6 engine is physically too long to fit.

[Bravest NY S4]

Hi guys, I am wondering if anyone has ever swapped the v8 bi-turbo coming from the c5 rs6 into an b6/b7 s4 engine compartment. I am seriously contemplating this idea instead of an supercharger. I wish I had the best of both worlds, an v8 and bi-turbos. The ssss can use a little bit of more power

[Shomegrown]

so you want to swap what is essentially the same engine out for the same engine, but one that has two turbos on it? let us know how that goes!

The reason nobody has even added a single turbo to the B6/7 S4 (nobody who has spoken up anyway) is that there is virtually zero space under the hood...definitely not enough for the RS6 setup, which comes out of the MUCH larger C5 A6 chassis.

1.) It's a totally different engine.
2.) It's been done before. There are photos floating around of a white (IIRC) B6/B7 car with the RS6 V8.

It would be a lot more work, but it would be a more robust solution than slapping a supercharger on the S4 or RS4's 4.2.

[cichonski55]

different block s4 4.2 - aluminum
rs6 4.2- aluminum block with reinforced bottom end and special plating.


can't push to much boost on it......also size constraints

[sakimano]

1.) It's a totally different engine.
2.) It's been done before. There are photos floating around of a white (IIRC) B6/B7 car with the RS6 V8.

It would be a lot more work, but it would be a more robust solution than slapping a supercharger on the S4 or RS4's 4.2.

I was referring only to space.

Are you referring to the guy in Greece who had that car up on really high stands? I remember that, but the guy kind of vanished after a while. I don't remember him finishing the project. Go find it so we can see what happened.

[Shomegrown]

I was referring only to space.

Are you referring to the guy in Greece who had that car up on really high stands? I remember that, but the guy kind of vanished after a while. I don't remember him finishing the project. Go find it so we can see what happened.

The car in Greece was actually a B5.

http://www.rs246.com/index.php?name=...f3d64b35a083ca

The B7 car was in Russia and was actually completed. The pictures I dug up no longer work though.

[highPSI-S4]

The car in Greece was actually a B5.

http://www.rs246.com/index.php?name=...f3d64b35a083ca

The B7 car was in Russia and was actually completed. The pictures I dug up no longer work though.

I've heard of this, but i thought the car was yellow and an S4 not an A4. So i was kinda right.

[serumk]

...

[TheMaverick]

Hi guys, I am wondering if anyone has ever swapped the v8 bi-turbo coming from the c5 rs6 into an b6/b7 s4 engine compartment. I am seriously contemplating this idea instead of an supercharger. I wish I had the best of both worlds, an v8 and bi-turbos. The ssss can use a little bit of more power

Maybe a little off topic but ... what about dropping an RS4 engine into your S4? That would give you a nice boost and I would think be a much easier swap.

[Maverick]

you need a lot of money
you need a good tuner who can flash the RS6 software into your factory Bosch ECU.

the other thing is, if your S4 is manual, you will need to make an adapter plate for the tranny to bolt onto the RS6 engine. no one makes that plate.

If I were you, I wouldn't do it since you will spend a ton of cash on this project. the dollar/performance ratio is horrible.

[Jdubya]

I would say if you're gonna go do that much trouble why not but something in that makes some serious HP. Like an LSX motor. :D

[Shomegrown]

I would say if you're gonna go do that much trouble why not but something in that makes some serious HP. Like an LSX motor. :D

Way too long, won't fit without losing quattro.

[KryptoniK]

For the money you would spend on this project.. Sell the s4 and buy an rs6 for 20k. Do some simple performance mods that gain a lot and.. Game over ;)

[pinkslip]

For the money you would spend on this, you could KEEP the S4 and buy an RS6.

[iconoclast]

Hi guys, I am wondering if anyone has ever swapped the v8 bi-turbo coming from the c5 rs6 into an b6/b7 s4 engine compartment. I am seriously contemplating this idea instead of an supercharger. I wish I had the best of both worlds, an v8 and bi-turbos. The ssss can use a little bit of more power

why not just buy a super charger kit and call it a day?

[fast_audi]

thanks for your opinions AZ, the reason I asked is I have the possibility to purchase an rs6 engine from a friend that owns a garage and I am sure it could fit with the time dedication and also depending how far one would want to go with his money. sellin the s is not an option, gettin an rs4, c63 or e92 m3 is a possibility for a weekend car.

[JLXPro]

I'm spearheading this project head on, with some of the best minds in professional racing on board. As we have solved turbo placement and cooling issues. Working on engine mods, but mainly CODE is the issue. The car will be fine to take 500hp as is, it's the torque I'm worried about. How many of you would take TT system that adds real power? Supercharger makes 5-8psi... for about $7-15k....

[sear]

I'm spearheading this project head on, with some of the best minds in professional racing on board. As we have solved turbo placement and cooling issues. Working on engine mods, but mainly CODE is the issue. The car will be fine to take 500hp as is, it's the torque I'm worried about. How many of you would take TT system that adds real power? Supercharger makes 5-8psi... for about $7-15k....

Is your project putting a TT RS6 engine and turbos into an S4? OR are you planning on developing a TT setup to be added to the B6/B7's base 4.2 V8? A few facts to clarify your question might get some better answers for you.

Sounds interesting eithe way thought...

[Keith@APR]

Its been done. Required new fenders, bumper and hood. The finished pics aren't available. Apparently the body work didn't turn out too well. :)

[jfunkey]

How many of you would take TT system that adds real power? Supercharger makes 5-8psi... for about $7-15k....

hahahahhahah Im doing this too for about 3000-76,000. Dude to be rude bro but If you knew what you were doing your price swing would not be over double from least to greatest if your quoteing projected prices of a kit.

There are going to be 100 people that are going to tell you there interested in a TT kit. But just like the Supercharger. Lots said they would get it few have. Obviously there are questions about some of the supercharger results. But for less then 7k you can have one and there were about 20 people back in the day that told VF if the kit was less then 8 they would get one right now.....well months later after the avilable Superscharger for less then 8k. We have only 3 maybe 4 examples of people getting the kits.

[Lugi20]

...there were about 20 people back in the day that told VF if the kit was less then 8 they would get one right now.....well months later after the avilable Superscharger for less then 8k. We have only 3 maybe 4 examples of people getting the kits.

I do not believe VF is, or ever will be selling a kit for less than $8,000. Nobody said they would buy any supercharger that went to the market first at that price point, it was company specific.

[jfunkey]

I do not believe VF is, or ever will be selling a kit for less than $8,000. Nobody said they would buy any supercharger that went to the market first at that price point, it was company specific.

Bro when VF came out with pictures and info they said the price point was around 10k there was an up roar about it and several people chimed in saying that if it was priced at 8k they would get it.....there is an option less then 8k and well not too many of those people are jumping on it...Although PES is not VF but its the point I was making.

The point I was trying to make...lots of people will tell you they want a turbo kit just to see one made most will never buy one.

[iconoclast]

Its been done. Required new fenders, bumper and hood. The finished pics aren't available. Apparently the body work didn't turn out too well. :)

looks like a b5, no?

[sway]

Bro when VF came out with pictures and info they said the price point was around 10k there was an up roar about it and several people chimed in saying that if it was priced at 8k they would get it.....there is an option less then 8k and well not too many of those people are jumping on it...Although PES is not VF but its the point I was making.

The point I was trying to make...lots of people will tell you they want a turbo kit just to see one made most will never buy one.

Funny story, I e-mailed them about getting the s/c for under 8k, and after many months later, finally got a reply. They told me all beta was complete and that final #'s were going to be from 45X-49XCHP. Then they told me the finalized kit is going to be 9.5K, and if you wanted to reserve one for first true production off the line would be another 1K. This is the reason no one got it, not to include the #'s IMO are sort of dissapointing.

[Keith@APR]

looks like a b5, no?

good catch. I was told it was a B6 A4. If not, I guess a b6 chassis would be of the same if not more difficult.

[Nollywood]

Very, very old thread. But yes, it can be done. Yes, this is my current project. And yes, back in 2008, I was told the stock 077-series V8 motor wouldn't fit into a B5 engine bay.

But, I proved it did. The morale here? If one listened to everyone's opinions on what fits, and what doesn't, we'd never get anywhere with platform advancement. Opinions from folk who've never tried what they're saying is impossible.

Happily, I never listen, I simply go ahead, and make it happen.

[TREKsportMK3]

Very, very old thread. But yes, it can be done. Yes, this is my current project. And yes, back in 2008, I was told the stock 077-series V8 motor wouldn't fit into a B5 engine bay.

But, I proved it did. The morale here? If one listened to everyone's opinions on what fits, and what doesn't, we'd never get anywhere with platform advancement. Opinions from folk who've never tried what they're saying is impossible.

Happily, I never listen, I simply go ahead, and make it happen.

I'm trying to do some research as I'm bored and curious. I was looking more at taking an a6 4.2 40v, that way the manual transmission in a B5 chassis would be easier. My main question is will the exhaust manifolds from the RS6 work in the B5 chassis. From a teardown of the RS6, it looks like the turbos are put over the axle flange of the transmission, but the B5 S4 looks like they're a little closer to the engine. Mainly wondering if the stock RS6 exhaust manifolds would work, or if something custom or single turbo conversion woulf have to be done. I would assume you could take the A6 4.2 40v, upgrade rods and pistons with good hardware too, us the RS6 intake manifold and exhaust manifolds/turbos and be able to figure out a way to make it all work, but I have no firsthand experience. Thanks in advance...

[Nollywood]

I'm trying to do some research as I'm bored and curious. I was looking more at taking an a6 4.2 40v, that way the manual transmission in a B5 chassis would be easier. My main question is will the exhaust manifolds from the RS6 work in the B5 chassis. From a teardown of the RS6, it looks like the turbos are put over the axle flange of the transmission, but the B5 S4 looks like they're a little closer to the engine. Mainly wondering if the stock RS6 exhaust manifolds would work, or if something custom or single turbo conversion woulf have to be done. I would assume you could take the A6 4.2 40v, upgrade rods and pistons with good hardware too, us the RS6 intake manifold and exhaust manifolds/turbos and be able to figure out a way to make it all work, but I have no firsthand experience. Thanks in advance...

I'm going with a complete C5 RS6 (BCY) motor. My thread is in the B6 A4 section.

[Europotvin]

It does fit, my friend installed a C5 RS6 engine in a B7 S4. Required alot of cutting and modifying of the front end (rad support, bumper, gill) but it did fit without any ''exterior'' mods.

[Nollywood]

It does fit, my friend installed a C5 RS6 engine in a B7 S4. Required alot of cutting and modifying of the front end (rad support, bumper, gill) but it did fit without any ''exterior'' mods.

Any pictorial links to the finished article?

[Europotvin]

Any pictorial links to the finished article?

Unfortunately there is no build thread on this since my friend is not really a internet forum guy.

But I had taken some pictures when he had dropped the engine in the car.





The car as been driving for almost a year now.


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