Compression Calculator

Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine.
Note: For pistons BELOW the block @ TDC - value in box must be a POSITIVE number (.000)
Note: For pistons ABOVE the block @ TDC - value in box must be a NEGATIVE number (-.000)
Note: For a DISH piston - value in box must be a POSITIVE number (0.0)
Note: For a DOME piston - value in box must be a NEGATIVE number (-0.0)
Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want.

Enter the number of cylinders of your engine
Bore		Finished bore of your engine
Stroke		Stroke of your engines crankshaft
Rod Length		Ctr. to Ctr. length of your connecting rods
Gasket Bore		Head Gasket bore diameter
Comp. Gasket		Compressed Head Gasket thickness
Block Deck Height		Center of main bearing bore to top of block
Top Ring Down		Top of 1st ring to top of pistons (FLAT)
Chamber Volume		Cylinder Head chamber volume in CC's
Dome/Dish Volume		DOME (-) or DISH (+) vol. (theoretical) in CC's
Piston to Deck		Top of BLOCK to top of piston (FLAT) @ TDC
Click "Calculate" for dimension results.
Total Volume
Cylinder Volume		Total cylinder volume in CC's =
Clearance Volume		All effective vol. above block deck @ TDC in CC's =
Gasket Volume		Volume of your head gasket in CC's =
Top Ring Volume		Total volume above the top ring @ TDC in CC's =
Deck Volume		Volume of area above the pistons @ TDC in CC's =
Piston Top Land		Piston top land diameter for volume calculations =
1/2 Stroke		1/2 stroke of your engine's crankshaft in inches =
Compression Ht.		Ctr. of piston pin to top of piston (FLAT) in inches =
Cubic Inches		Cubic inch displacement of your engine =
For the given dimensions, your compression ratio =