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Thierry25 Thierry25 is offline
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Join Date: Feb 2009
Location: FRANCE (Besanšon)
Posts: 310
Originally Posted by drmatera View Post
This has been discussed many times and recently.

Build your engine based on what you want/need it to be. Personally I don't see any reason to keep the compression so low. Stock compression is very inefficient, going to 8 or 8.5:1 on an engine that you plan on running .8 to 1.0 bar and stock timing will be very safe not to mention more efficient and powerful off boost for street driving.
Don't misunderstand ....I said "closer" , I didn't say he will "reach" the knock far !

There is a huge margin with stock configuration.

You are right ! if the plan is too keep the boost level @ 0.8- 1 bar with stock setup, the compression can be increased for better off/on boost efficiency.
965 C2T / 1991 3.3 TURBO
Old 07-21-2011, 09:50 AM
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