Piston Engines - Displacement

The displacement of a piston engine can be calculated as

V = (π / 4) s b² no_c             (1)

where

V = engine displacement (in³, cm³)

s = stroke (in, cm)

b = bore diameter (in, cm)

no_c = number of cylinders

Example - Displacement of V8 Engine

The displacement of a 8 cylinder piston engine with stroke 3.31 in and bore 3.625 in can be calculated as

V = (π / 4) (3.31 in) (3.625 in)² (8)  

   = 273 cu in

Piston Engine Displacement Calculator

stroke (in, cm)

bore (in, cm)

no. cylinders