Engine Displacement Calculator
Calculate Engine Displacement
Formula
V = (pi / 4) x bore^2 x stroke x cylinders. Result in mm^3, divide by 1,000 for cc, by 1,000,000 for liters.
Frequently Asked Questions
How is engine displacement calculated?
Displacement = (pi/4) x bore^2 x stroke x number of cylinders. The bore is the cylinder diameter and stroke is the piston travel distance. Result is in mm^3, divided by 1000 for cc.
What is bore/stroke ratio?
Bore/stroke ratio compares cylinder diameter to piston travel. Over-square engines (ratio > 1) favor high RPM. Under-square engines (ratio < 1) favor torque. Square engines have equal bore and stroke.
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