GT3 vs turbo head

[pete95zhn]

Hello!

Few questions about GT3 and turbo cylinder heads, if some one should have data available...:

-valve sizes, in/ex?

-port sizes?

-flow rates?

And the some more:

-Is there an aftermarket ITB system available for the GT3 engine?

TIA, Pete

[ltcjmramos]

This has been discussed a few times over on Rennlist. Go to the GT2/GT3 forum there for more detail, but in essence, why would you tb the GT3 rather than just buy a GT2? The conversion expense would take you beyond the cost of a GT2.

[pete95zhn]

This has been discussed a few times over on Rennlist. Go to the GT2/GT3 forum there for more detail,

Data not found.

but in essence, why would you tb the GT3 rather than just buy a GT2? The conversion expense would take you beyond the cost of a GT2.

This is not related in any way to my interest in this subject.

Edited February 22, 2009 by pete95zhn

[Brad Roberts]

-Is there an aftermarket ITB system available for the GT3 engine?

Hi Pete,

We do have something available, but we have found it is tough to beat the Porsche Motorsports developed plenums for the GT3R/RS/RSR.

The first versions of the current GT3 engine had ITB's (this engine is essentially the water cooled version of the 962 engines)

I can get you the flow numbers for the Porsche Motorsports GT3Cup/R/RS/RSR and turbo heads, but it will be Tuesday of next week before I can place the calls.

Care to elaborate on your project? :)

B

[pete95zhn]

Brad, PM sent!

[Brad Roberts]

Thank you sir :)

I like where you are going with this, let me know how I can help!

B

[pete95zhn]

What I've so far found is this, modified 996 turbo head flows

in 324CFM / ex 296CFM with 28" of water @ .500" lift and

in 306CFM / ex 280CFM with 25" of water @ .500" lift.

Valves used: in 39mm, ex 34mm.

EDIT: This thread is not relevent for me anymore, my project turned into reality somehow different than planned...

Edited April 1, 2009 by pete95zhn