Engine Capacity Calculator

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When building a new engine, or rebuilding and modifying an existing engine, the cylinder bore lining is often re-bored and oversized pistons fitted. Also, fitting a crankshaft with a longer stroke than standard (“Stroker Kit”) is a popular method of increasing engine capacity to give more torque.

This web program can be used to quickly calculate the exact engine capacity. It can be used for all engine types, irrespective of manufacture, as long as the number of cylinders, cylinder bore size and stroke length is known.

Cylinder bore diameter (mm)
Stroke length (mm)
Engine Capacity