Compression Ratio Calculation By Bowling & Grippo

This page determines compression ratio from mechanical engine parameters (piston dish, head volume) and gasket thickness. Like anything else, accurate measurements for head and piston volume are required for meaningful results.

Program Inputs:

Head Volume in CC:

Piston Top Volume in CC:

Cylinder Bore in Inches:

Crankshaft Stroke in Inches:

Deck height in Inches:

Gasket Height in Inches:

Press this button to submit a computation: .

To reset the form input: .

Bruce Bowling
Al Grippo