Calculate Compression Ratio



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Input a positive number for valve reliefs or piston below deck.
Input a negative number if it has a dome or piston above deck.

CR Calculator
Number Of Cylinders:
Bore:
  MM    Inches 
Stroke:
  MM    Inches 
Head Chamber (cc's):
cc's
Valve Relief / Dome (cc's):
cc's (Negative Number if Dome)
Gasket Thickness (compressed):
  MM    Inches 
Gasket Bore Diameter:
  MM    Inches 
Piston to Deck Height:
  MM    Inches 
Other Additions (cc's):
cc's




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