Quote:
Originally Posted by pscook
There is a difference between compression ratio and cylinder compression. One is the volume of the combustion chamber, the other is the ability of the rings to seal. Just changing the volume does not change the ability of your rings to seal.
Also, did you hold the throttle wide open when testing? How many kicks did you give it before you took your measurement?
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Good points.. But you'd also expect a fresh engine with a higher compression ratio to have higher cylinder compression too.