Audi R8 Supercharged


S592R

S592R

GT Owner
Mark IV Lifetime
Dec 3, 2006
2,800
I was googling the R8 today and ran across a tuner offering supercharged kits for the V8.

Any owners of the R8 on here think that might be a neat trick?
 
I don't own one, but izzunt the R8 nat. asp.?

If so, to do the blower thing RIGHT - the engine's gotta come appart for new, lower comp. pistons ... and blower grind cams as well.

Duzzunt sound like a good $$$ to fun ratio mod to me. I'd wait for the big factory engine upgrades that are coming instead.

But then, I'm cheap. :bored
 
Cheap Pockets. Hmmm I kinda Like the sound of that...
 
Tungsten's the only one I know of with one, and he's got the V-10 on order as well.
 
HHGT said:
Cheap Pockets. Hmmm I kinda Like the sound of that...
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More like Tight Pockets ... but then again that kind of sounds sexual .... :biggrin

Hey EP has the bug got you yet? Snooping for another driver GT? I know "driver GT" is a relative statement .......
 
I have a black/carbon fiber R8. It's naturally aspirated V8. Reportedly 420hp, but feels less due to its all wheel drive. Very nice car, though I would like some more umphh. Actually thinking of selling mine (only 800 mi) on it.
 
Empty Pockets said:
I don't own one, but izzunt the R8 nat. asp.?

If so, to do the blower thing RIGHT - the engine's gotta come appart for new, lower comp. pistons ... and blower grind cams as well.

Duzzunt sound like a good $$$ to fun ratio mod to me. I'd wait for the big factory engine upgrades that are coming instead.

But then, I'm cheap. :bored
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For a max power combo, yes, tho motor needs to come apart...but for the guy looking for an easy 100 HP, I doubt that a well engineered centrifugal blower with 6-8 psi would compromise reliability significantly. The fact that it uses direct injection should also theoretically make it more tolerant of boost.
 
fjpikul said:
Tungsten's the only one I know of with one, and he's got the V-10 on order as well.
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Doc John, Xevius has a white one..... V8 and Sweet!
 
jaxgt said:
I have a black/carbon fiber R8. It's naturally aspirated V8. Reportedly 420hp, but feels less due to its all wheel drive. Very nice car, though I would like some more umphh. Actually thinking of selling mine (only 800 mi) on it.
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If you are thinking of selling this would probably be a very good time while low mileage used ones are still going for significantly over MSRP. I think once the supply increases and the V10s and roadsters hit the market the "plain" R8 will depreciate a bit. Just my $.02
 
DoctorV8 said:
For a max power combo, yes, tho motor needs to come apart...but for the guy looking for an easy 100 HP, I doubt that a well engineered centrifugal blower with 6-8 psi would compromise reliability significantly. The fact that it uses direct injection should also theoretically make it more tolerant of boost.
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Yessir, but that's a pretty darn expensive way to get 100 'horsies' IMO, Doc! :biggrin There are much cheaper ways to get 'em!:lol

Anyway, I'm not too sure one could get away with cramming an actual 6-8 lb boost into a 10:1 (or better) engine...even retarding the ignition big time, could one??? And doing THAT pretty much negates most of whatever extra HP the boost is suppose to provide. And then there's the added "issue" of using the blower in conjunction with the norm. asp. cam profile. (I don't know what the R8's static 'ratio IS, but I doubt it'd be anything under 10:1. And as I recall, 9.5:1 is about the absolute max one's supposed to go on a blower 'motor'.)

That said, direct injection 'DO' provide wonderous options in the 'tuning' dept!!! Regardless, I'd have to "see it to believe it" as they say. I just can't fathom a supercharged high compression 'motor' using a N.A. cam profile providing any real "bang for the buck invested" compared to the same 'motor' using 8:1/9:1 comp. and a blower cam. That's part of the curse of being "old skool", I guess! :rofl :thumbsup :cheers


Prehistoric Pockets
 
Empty Pockets said:
Yessir, but that's a pretty darn expensive way to get 100 'horsies' IMO, Doc! :biggrin There are much cheaper ways to get 'em!:lol
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Yeah, like buying a 5.0L Mustang. An R8 isn't exactly a cost effective way to get 420 horsies either... ;-)



Anyway, I'm not too sure one could get away with cramming an actual 6-8 lb boost into a 10:1 (or better) engine...even retarding the ignition big time, could one???
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Sure you can! My 2004 Corvette has a 10.1:1 LS1 motor, and with 10 psi, I've been making 570 rwhp for years...on 93 octance...it's all in the tuning.

That said, direct injection 'DO' provide wonderous options in the 'tuning' dept!!! Regardless, I'd have to "see it to believe it" as they say. I just can't fathom a supercharged high compression 'motor' using a N.A. cam profile providing any real "bang for the buck invested" compared to the same 'motor' using 8:1/9:1 comp. and a blower cam. That's part of the curse of being "old skool", I guess! :rofl :thumbsup :cheers


Prehistoric Pockets
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Actually, let me make you even more nervous...the R8's CR is 12.5:1!

But keep in mind the factory twin turbo'd BMW 335i runs 10.2:1...again, thanks to DI.
 
DoctorV8 said:
Actually, let me make you even more nervous...THE R8's CR is 12.5:1!

But keep in mind the factory twin turbo'd BMW 335i runs 10.2:1...again, thanks to DI.
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12.5 ONNA R8 ... and yew can still 'charge it?!!!!:eek

Well - 'guess that's why 'YOU be' the "Doc" an' I'm ... just Pockets. :beer2::beer2::beer2:

'Had no CLUE they can/do run that kinda comp/boost combos these days. Man. Have I been outta the loop!!! :rofl (An', shoot! We HAVE a twin turbo 335i in our garage. So, you'd THINK I'd at least 'knowed' about what makes THAT thing "tick". :bang)

I'm putting on that pointy hat and heading for the nearest corner now...and packin' a "Tunin' fer Dummies" handbook...
 
MTM has a supercharger

GP8+0085.jpg
 
Just locked up a RB v10 TDI .... now just have to wait for them to build them.
 
Empty Pockets said:
Yessir, but that's a pretty darn expensive way to get 100 'horsies' IMO, Doc! :biggrin There are much cheaper ways to get 'em!:lol

Anyway, I'm not too sure one could get away with cramming an actual 6-8 lb boost into a 10:1 (or better) engine...even retarding the ignition big time, could one??? And doing THAT pretty much negates most of whatever extra HP the boost is suppose to provide. And then there's the added "issue" of using the blower in conjunction with the norm. asp. cam profile. (I don't know what the R8's static 'ratio IS, but I doubt it'd be anything under 10:1. And as I recall, 9.5:1 is about the absolute max one's supposed to go on a blower 'motor'.)

That said, direct injection 'DO' provide wonderous options in the 'tuning' dept!!! Regardless, I'd have to "see it to believe it" as they say. I just can't fathom a supercharged high compression 'motor' using a N.A. cam profile providing any real "bang for the buck invested" compared to the same 'motor' using 8:1/9:1 comp. and a blower cam. That's part of the curse of being "old skool", I guess! :rofl :thumbsup :cheers

The R8 is an amzing car. THe only downside is that its about 100hp short of competing with the big boys. A realiable FI setup would make that car perfect.


Prehistoric Pockets
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I know many S2000 guys running 7-9psi on the stock motor with no changes and their static compression ratio is 11:1. There are also supercharger kits out for the M3 which is at 11.5:1.

Like you said, its not the right way to do things, but it seems to be fairly reliable with a safe tune.
 
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