Wishmaster

Hi,

what turbocharger would you prefer for a 3l 8V 500rwhp project?

Garrett GT30r/GT35R - Turbonetics GTK-550/650 ?

How much boost i must drive? More than 22PSI ?

Thanks for all information.

Cheers,
Sven

Paulyy

people run GT3582R. while a GTX3076R its rated at 650 hp when the GT3582R is rated at 600hp.

Wishmaster

Thanks for the input, paulyy!

Darwantae951

Nice goal, but will it be streetable?

Wishmaster

Streetable, why not? My friend drives an Audi 2.2l, GT4094 0,96A/R, 100mm intercooler, 84mm Downpipe, 850er Siemens Deka, 2xBosch-Motorsport 413er Pump (200L@8bar) .... with only one pump and lower boost he had 650PS.
slowly startet: 3,9sec,
100-300 20sec.
1/4 with GT35 11,1sec..

Thom

I have only experience with my GT30/KKK hybrid, but I have always felt that a 3.0 engine was too small for getting a GT35 working in its efficiency area on a load/rev engine range area wide enough to offer a satisfying drivability/yield ratio.

blown 944

If you consider a 4094 with a .96 hotside on 2.2 ,streetable then your version of "streetable" is far different than many around here.

Personally I'd try to use a gt30r for best response. Unless you don't car about the powerband then go wild

95ONE

It's all relative. I'd go GT40 if I were into just bigger power on pump gas. I'm not. My GT30R nailed it. I don't think I could have ever been happier, which is why I'm going with a slightly stronger version of the same turbo mildly adjusted for a 3.0 instead of the 2.5 I had. \\

I'm expecting 500 whp.. or more, but It won't be living there. And that's the beauty of a turbo. you can CONTROL the amount of boost. So, rarely would I need to stress out the motor at full boost giving me max hp. The turbo won't be in its efficiency range at 500hp like Thom stated, but who cares.. I would rarely be in that boost level anyway. BUT.. if I needed it to show off, it would be available. Super Saiyan 2. imadork.

pole position

To make a reliable 500 whp on pump you need a modern turbo w a billet wheel, Precision, GTX, FP etc appropiate header,crossover, downpipe , exhaust combo , significant headwork/cam and meth with a Aquamist Hfs and last but not least think outside of the rennlist vendor box....also need logging capabilities to monitor A/f, knock, timing ,injector duty etc in real time.

Btw don't be afraid of boost, the only way you increase power in a Otto engiine is a increase in cylinder pressure either thru comp or Fi.....done right you should see a spike to 25/26 and settle for 22/23 to redline.

Tedro951

I'd buy that guys Audi.

Thom

http://www.youtube.com/watch?v=O-NHB...&feature=share

gt37vgt

GT3582 or for a bit more GTX3582 or borg warner s300

TurboTommy

No, you can also increase power by increasing the RPMs; keeping the torque from falling off at higher RPMs and keeping the pumping losses to a minimum.
Then you don't need as much cylinder pressure as you say.

The gt#s are a reference more for the compressor side, and just because they're either a little bit on the small side or the big side, that doesn't necessarily determine the power characteristics/powerband. That is determined more by the hotside. That being said, looking at compressor maps, only the biggest gt30s will flow enough air, on the compressor side, to accommodate the above power goals. Otherwise, a gt35 (I think the 600 crank hp is a misprint; they're all good for 650)

333pg333

Yes, I agree with Sid. When you look at charts of a lot of these later model modded cars they have very steep and late spooling power curves. They'd probably look at some of ours and think they were diesels.

Wishmaster

Here in germany i drive 102oct ultimate gas.

SFR Stage 2 header, 3" downpipe, LR Intake

LR 3", Tial Wastegate

Checked with Dbilas Cam

PLX logging, Apexi duty, KS4 Knock, Haltech Map

Now i need only the perfect turbo I think about the GT35 or the Turbonetics gtk650.

Late spooling hmmm...Look at the charts here.