Please Help!!!Do I run 9.8,10 10.5? Can 10.5:1 be reliable???
HDF Community Team
Joined: Jun 2006
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From: san antonio
Forget about static CR and setup cams and heads for target corrected (running) CR of about 9.3. Use cranking compression to determine whether or not compression releases are required; cranking compression above 190 would benefit from compression releases; cranking compression above 200psi needs compression releases. IMHO.
Tourer
Joined: Mar 2007
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i agree with djl...have been running a dyna with 200 cranking compression for 14k miles...had a road king with at least 205 for 30k miles before and no problems with it either....however we must use compression releases, premium gas, and keep the revs above 2500 with really high compression
Sponsor
Joined: Dec 2007
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The cam will dictate the mechanical compression ratio.
For instance, with a Wood 8, you want just about 10.5--10.8.
You cannot just arbitrarily poke compression at an engine.
Scott
For instance, with a Wood 8, you want just about 10.5--10.8.
You cannot just arbitrarily poke compression at an engine.
Scott
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