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The mkiv Supra Owners Club

RS6, V8 twin turbo supercharger conversion!


mattysupra

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I take it you have the estate version as you actually want an estate then?

What about buying and tuning a stagea? Theoretically with the RB26 lump in it that car would have the same power potential as the saloon GTR? Wouldn't look as uber cool though to be fair as the audi. Is there an R34 stagea? Now that would be pretty cool with 1000 bhp :D

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I take it you have the estate version as you actually want an estate then? :D

 

Easy, its a advant not estate!:)

 

I want to keep the rs as the car is the bollox. But i want more power with out spending 30k! And i got the advant ( estate ) as i think they look better than the saloon. Skylines etc are just to basic inside for me.

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Easy, its a advant not estate!:)

 

I want to keep the rs as the car is the bollox. But i want more power with out spending 30k! And i got the advant ( estate ) as i think they look better than the saloon. Skylines etc are just to basic inside for me.

 

 

Just wait until you see my skyline mate inside.. you'll change your mind for sure. :)

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so anyway, any positive feedback on my first post? Do you think my plan will work or not ? Any down sides etc?

 

If there is room for new manifolds designed to hold turbo lower down on each bank(under body) and you can over come oil feed and return lines then you have a chance.

 

Its seems like it be unpractical to do, the Germans would have cracked an easy solution by now. ;)

 

Be happy with what you got for now and wait for some else to have a go, beside the money you would have spent on that project, would buy a nice single Soup :D

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Guest Artermis

am not convinced by the blower idea. you would have to run it off the crank which would sap power from the engine already, so not sure if there is any real gain to be had from it. for example, the blower on the Merc SLR requires 150ish bhp just to power it, not sure what gains you would see, though it would sound pretty sexy.

 

bigger turbos are pointless if the manifolds aint gonna get the gas to spool them, so no point in messing with cams and all that sort of thing.

 

has it got an intercooler? i know there dont look like much room, so not sure on the plumbing practicalities, but maybe work a shot.

 

i wouldnt give up on the hunt for manifolds just yet, there will be someone somewhere that will do it at a sensible price.

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am not convinced by the blower idea. you would have to run it off the crank which would sap power from the engine already, so not sure if there is any real gain to be had from it. for example, the blower on the Merc SLR requires 150ish bhp just to power it, not sure what gains you would see, though it would sound pretty sexy.

 

bigger turbos are pointless if the manifolds aint gonna get the gas to spool them, so no point in messing with cams and all that sort of thing.

 

has it got an intercooler? i know there dont look like much room, so not sure on the plumbing practicalities, but maybe work a shot.

 

i wouldnt give up on the hunt for manifolds just yet, there will be someone somewhere that will do it at a sensible price.

 

Ye got TWO great big intercoolers! Im am also worried about how much power the super charger will take out of the engine. Im hoping to run more boost to compensate for the blower. But there is only so much boost i can stick in the thing on standard parts. Im thinking that if it running at 17psi at the moment then if i give it say 20 psi it should be about the same as having the turbos. Problem is i want more power and as nobody has modded a rs6 yet i dont know how much boost you can stick in the engine on stardard parts. For all i know it might take 30 psi easy or it could be on its limit at 20psi ?

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Guest Artermis
Ye got TWO great big intercoolers! Im am also worried about how much power the super charger will take out of the engine. Im hoping to run more boost to compensate for the blower. But there is only so much boost i can stick in the thing on standard parts. Im thinking that if it running at 17psi at the moment then if i give it say 20 psi it should be about the same as having the turbos. Problem is i want more power and as nobody has modded a rs6 yet i dont know how much boost you can stick in the engine on stardard parts. For all i know it might take 30 psi easy or it could be on its limit at 20psi ?

 

 

you coul ask audi, they maybe able to tell you something, no harm in trying. some companies are more willing to provide technical data than others, maybe have some stress test data they would share with you.

 

dont ask, dont get hey?

 

just a thought, but if you go blower, are you not going to require some new manifolds to be made anyway, so may as well do what you can to get them made with turbos first as last anyway?

 

be interesting to see how you get on.....

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  • 1 month later...
Guest Supermule

Heyy there....

 

My name is Brian, and I just found this tread on Google.

 

I have an RS6 with a few mods....

image

 

It has upgraded turbos (K04's with bigger wheels) on both turbine and exhaust side. Polished piping from IC to intake manifold. That alone gives you in excess of 60+ nm with same boostlevel.

 

I am, as you, looking for those extra HP. I have a really good friend, that approves cars in DK. He has a rolling road and the RS6 loose's 109HP in the gearbox/diff. So if you have 535hp measured, it will only produce ca 425hp on the road.

 

I am looking in excess of 700hp, and will se if I can fit the turbos on top of the engine, removing the airfilter box alltogether. Is that not an option, I will see if the new Audi S3 K04-64 fits under the car. It can run up to 330-340hp on an 2.0 engine. So one should be able to achieve 630-650hp on the engine. The problem is turbocharger spinoff with the std. turbos, and they will only deliver to approx. 5500 RPM's. With bigger turbo's, you should be able to maintain pressure in excess of 6500 RPM's. That will give you the HP you want. They should produce around 20 psi at 6500 RPM.

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Guest Supermule

I fianally got the car on an rolling road.... The testbench used, is the one they use to calibrate the Danish Touring Car Championship.

 

The output is seen here...

 

http://www.bjerring-jensen.dk/images/diverse/scan800x600.jpg

 

It is measured with a 63C intake temp. With fullgas and 310 km/h, it has an intake temp of 30C. So on the road the car produces around 541 DIN HP.

 

So that is nice....

 

I am about to test an Garrett 2871R setup on the car....:) It should produce in excess of 700 DIN HP.

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Guest Supermule

:p I'm not greedy....

 

I just want to explore the potential of the car....:search:

 

If I can get 700 DIN HP with 30,5 PSI total pressure at 6800 RPM, then i'm happy.

 

stop being greedy and enjoy the motor.:):)
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