Thread: help with compression
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Old 11-05-2009, 09:53 PM
Harley Eaton Harley Eaton is offline
 
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55 PSI is definitely unacceptable. 70 psi is not good enough, either. If I recall correctly, the lowest compression should be within 20 psi of the highest cylinder. I've seen engines that run pretty good on 90 psi per cylinder.
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