What turbine choose? ~ 430 PS ~ 550 NM

[mk216v]

I'm interested in exceeding the 430 PS and fast spool up, so that from 3000 rpm car was full sequence
Admission is flange k24/k26 because I have such a collector-type sport quattro / mtm. To choose a hybrid Holset hx35/k26 (7 blades), the hybrid 034motorsport Garett gt 3071.
Silnim prepared for such a power.

[JP]

The 034 Garrett will make the required power and spool up, can't say about the holset.

What I will say is my next turbo wont be a Garrett

[A80Avant]

i already have the 3071, and if you dont plan to make any serious cyl head work or use different cam setup, id say go for the holset. My 3071 gets at best 420-430hp and dies out at 6000rpm or so. Nice spooling turbo, good for >400hp crank and definitelly good for fast spool up.

Another choise would be the 3071 with 0.82 AR, sacrifice a few rpm for better hp on the top end without the fear of EGTs cramping up.

[JP]

^^^^ going for bigger hotside doesn't change the rpm at which you hit peak boost it changes the amount of boost you achieve at lower rpm before your peak.

[A80Avant]

in other words, spooling.

[JP]

Guess I misinterpreted your use of spool up as most people just refer to peak boost. As both .63 and .82 spool up to peak boost at the same rpm just the .63 has more area under the curve uptill that point and the .82 is capable of holding better to redline whereas the .63 starts to die of.

[Bram]

3 setups using the same turbo's (GT3071R 0.63 K26) but with different mapping and engine components. Same dyno/operator

[mk216v]

gt3071/K26 sell someone besides 034motorsport? It is available in Europe?

[Jamo]

PK Motorsport, AET turbos, Turbo Dynamics, Owen Developement. Basically google for your local stockist

[rs200]

I already order Comp Turbo CT355 , and my opinion is that CT is better for a good spool than garett 3071.

for a little bit higher price you can get 3BB turbo and full boost at 3800 rpm

[rs200]

garett isn't what it was before..

here is the link if you want CT. I will pay my 1200euro

http://compturbo.com/products/index.php?folder1=Turbo_Chargers&folder2=CT3&product=CT355

[EspenW]

3 setups using the same turbo's (GT3071R 0.63 K26) but with different mapping and engine components. Same dyno/operator

400.7 at the wheels and 446.2 at the crank is 10% drivetrain loss. That is pretty astonishing with quattro. Probably a world record

[Bart76]

What's the normal value for drivetrain loss?

[EspenW]

Varies wildlyfrom as low 12% on a hub dyno (Rototest, Dynapack, etc) to up to a ridiculous 30-50% on a Maha dyno.
What is normally used for quattro is usually 20-25%.

[Bart76]

My last run was 314 whp, it was 353 engine hp.