Is there a simple formula to determine compression ratio? I have some pistons that are 10.4:1 with a 64cc chamber, but my heads are 59cc can someone help me figure out what my new compression ratio would be?
Thanks in advance.

 

check with the search button. there are many comp calculators that will get you very close! there is alot more than just what the pistons say they are because of comprssd head asket thickness, comprssn heith of the piston, chamber volume etc.... post all of your info u can think of and at least one of us will help with what we can. but until then, u dont have enough info yet to finish the equation

 

http://www.kb-silvolite.com/calc.php?action=comp