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911 wide 911 wide is offline
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Join Date: Aug 2009
Posts: 26
Thanks for all of your advice.
It seems that the general opinion is that the compression ratio is to high.
The motor is a 964 built to carrera cup spec, I think.

Mahle cylinders 102mm
Je 10.5:1 pistons
Heads and cylinders have a 4.5mm sealing ring
Valves are motorsport 49.5 inlet 51.5 exhaust
That is about all I know
What else can I do to improve power?
John
Old 08-27-2011, 01:13 PM
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