I am building a 3.0 Liter 16 valve turboengine with GT35R 0,82AR..

https://rennlist.com/forums/showthre...ighlight=GT30R

You can see that my approach is a bit different then the others and might not be the best way to build engine but lets decide that after I have tuned it propertly

Markus

 

er i just looked at your intended build i cant see anything that is not the best way to go seem to be one of the few that understand that the front part of the exhust is the bigger part as the gas is still hot.
I just picked up a gt 3571 i was going to put it on the 2.5 sooner whil the 3.0 is apart i have a gt3782 for the 3.0 but not cast in stone i may stick with the 35 until i lern to drive better

 

If it truly is a Gt3571, ditch it! The 3571 is NOT a high performance turbo. It's a pretty crappy mismatch from Garrett, and I believe it was designed more with diesels in mind. They have either a 1.05 or 1.18a/r (LAAAAAAAAAAAAGGGGGYYYY!!!!) exhaust housing as standard yet are only rated at ~390fwhp. There are much better turbos out there. Oh yeah, the gt3782 is a diesel turbo as well, comes with a 1.12a/r exhaust housing. Dude, just say no to diesel turbos! Not to get too OT but, a 3076r w/ either a .63 or .82 hotside covers about 99% of what most people want with a 951.

 

Well, you're right, because you didn't actually say anything. The guy has a 16 valve head in his possesion and can't easily or cheaply get his hands on a 2.7 head. ummm....nuff said.

 

i almost have a 16 valve head i can buy a full 2.5 /16 motor for the price of a 2.7 head . and as for turbo selection once again i'm being a tin **** both my turbos have i think .9 vgt hot side and cost me a couple of hundred each my exhuast cam profile is a bit bigger wich leads me toward bigger hot side I think the 3571 my be a bit small but i will make an educated decision afer datta loging inlet and exhaust pressures and temps

 

FWIW on a 16 valve 3.0, that turbo that will be laggy on a 2.5 will likely do a pretty nice job on a 3.0.

 

the 3571 ?
it has to be no worse than other stuff people put on there that is similar but older like t61's

 

If any body needs one drop me a message

 

Almost anything with a 1.XX+ hotside is going to be laggy. Compromising on a turbo is like compromising on cam(s). It's a pretty damn important part of the motor and will affect your entire powerband. I wouldn't simply throw on whatever you have laying around. It's not going to simply just "work out", and I think you are going to be rather disappointed.

 

Porschefile is correct. Any turbo with a 1.00+ A/R on the turbine is going to have monster lag on a 2.5 and that is the least of your concerns. The 2.5 just will not flow enough in any configuration to push a turbine housing that large. I wouldn't run one that large on a 3.0 either.... maybe

Choose a better turbo and make power at <3000 rpm, you will be happier.

 

it.s not a 1.0 hotside not that any one would bother to ask