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race911turbo race911turbo is offline
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Join Date: Jun 2007
Location: Portland OR and Taiwan
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Quote:
Originally Posted by 911TT33 View Post
0.63 A/R is a good size for TT's... you can go down to 0.48 A/R and it will be VERY responsive, BUT it will choke the motor at the top end and limit HP output.

All depends how you use your car
Yes, 0.63 is good for 930 twin TT. Half of 3.3 Liter = 1650cc , each turbo with A/R 0.63 handle 1.65 liter.
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1975 914, 1988 944 turbo S sold.
1986 944 turbo resleeve 2.7, DTA S-60 PRO.
1986 911 Carrera with 965 turbo motor, DTA S-80 PRO.
1989 930 EFI, DTA, Carrera intake, twinturbo,2x GT-35R.
1991 964 convertible, wide body conversion.
Old 09-07-2011, 09:53 PM
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