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Piston Engines - Displacement

Calculate piston engine displacement.

Piston engine - bore, stroke and displacement

The displacement of a piston engine can be calculated as

V = (π / 4) s b2 noc             (1)


V = engine displacement (in3, cm3)

s = stroke (in, cm)

b = bore diameter (in, cm)

noc = 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

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