turbotrana Member 2,586 Member For: 21y 6m 17d Gender: Male Posted 15/02/04 10:34 AM Share Posted 15/02/04 10:34 AM Anyone know the A/R and wheel sizes of both the turbine and compressor of the GT40 on the XR6T.Is the A/R for the turbine the same for both auto and manual.Whats limiting power on the Turbo, compressor flow or turbine restriction. Link to comment Share on other sites More sharing options...
CnC SportCompact.biz Member 328 Member For: 21y 7m 6d Location: Canberra Posted 15/02/04 12:52 PM Share Posted 15/02/04 12:52 PM Compressor flow is limiting power production, although this is a very large turbocharger for a factory car The main issue with the turbo seems to be controlling boost when you get above about 11psi. The wastegate does not flow enough air which requires machining and fitment of a larger flapper valve. Link to comment Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 21y 9m 23d Gender: Male Location: Sydney Posted 15/02/04 01:57 PM Share Posted 15/02/04 01:57 PM Maybe both a high-flow compressor and external wastegate may be a viable option moving foward, for a good power boost but not losing drivability. But most of us are still well within the limits of the stock turbo.I didn't think there was any difference between the turbos in the auto & manual.Brian Link to comment Share on other sites More sharing options...
aps Member 1,505 Member For: 21y 7m 11d Posted 20/02/04 06:09 AM Share Posted 20/02/04 06:09 AM Anyone know the A/R and wheel sizes of both the turbine and compressor of the GT40 on the XR6T.Is the A/R for the turbine the same for both auto and manual.Whats limiting power on the Turbo, compressor flow or turbine restriction.Both the compressor and turbine flow is maxed out at 650 HP. We will have a drop in 800 HP ball bearing turbo charger by mid year combined with a sports exhaust manifold to suit the xr6t falcon. Will be able to give you more details on power, torque and boost curves in approx 6 weeks when we have completed engine dynamometer testing.PeterAPS Link to comment Share on other sites More sharing options...
tx3dude Member 15 Member For: 21y 11m 16d Posted 20/02/04 07:36 AM Share Posted 20/02/04 07:36 AM Anyone know the A/R and wheel sizes of both the turbine and compressor of the GT40 on the XR6T.Is the A/R for the turbine the same for both auto and manual.Whats limiting power on the Turbo, compressor flow or turbine restriction.Both the compressor and turbine flow is maxed out at 650 HP. We will have a drop in 800 HP ball bearing turbo charger by mid year combined with a sports exhaust manifold to suit the xr6t falcon. Will be able to give you more details on power, torque and boost curves in approx 6 weeks when we have completed engine dynamometer testing.PeterAPS sssssiiiiiiiiccccccckkkkkkkkkkkkkk! Link to comment Share on other sites More sharing options...
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