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TurboKraft TurboKraft is offline
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Join Date: Mar 2005
Location: Phoenix, AZ
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Originally Posted by Jerz View Post
Was the GT35R done after 6000 rpm due to boost falling off, or due to flow restrictions of the stock heads, cams, exhaust? In other words, could GT35R support higher rpm on properly built 3.6? Also What would be the boost treshhold of GT4088 on a properly build 3.6 engine?
Restrictions were the cams and those stock 964 exhaust manifolds.
But that was closing in on the flow limit of the turbochargers turbine wheel and/or turbine housing, too. Backpressure was rising at higher boost pressures and peak HP happened at a slightly lower rpm.
But the client was ecstatic with the outcome, and that's what matters.

Curiosity -- why do you want to build it to rev a lot higher?

GT4088R -- what do you mean by the "boost threshold?" Do you mean when it will spool up, or deliver 1.0bar boost?
Chris Carroll
TurboKraft, Inc.
Tel. 480.969.0911
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Old 05-18-2010, 02:37 PM
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