Quote:
Originally Posted by TurboKraft
We use the turbine maps a great deal in making an initial turbocharger selection on a new engine combination. If you know the cfm flow of the engine, you better have the exhaust flow to match otherwise you get choked with backpressure into the turbo. Sure, we might make a change after initial dynos, like a different A/R turbine housing to tailor the power band for how the client will use the car. But this turbine flow data is very useful in selecting the closest match the first time around.
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Chris,
Out of curiousity, do you have a rough rule of thumb of what frame size Garrett to use on which 930 engine combination? For example:
GT35r 450RWHP-550RWHP
GT40r 550RWHP-650RWHP
GT42r ? -?
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1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
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