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Old 01-03-2014, 12:43 PM   #7
JWoj3540
 
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Drives: 2012 2SS/RS M6
Join Date: Jul 2011
Location: Metro Detroit
Posts: 696
The equation to calculation compression ratio is:

CR = Volume of chamber when piston is at BDC / Volume of chamber when piston is at TDC

Spacing the head further from the deck will increase the volume for both the numerator and denominator of this equation by the same amount, which will reduce the compression ratio
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