Definition
Engine displacement is determined from the bore and stroke of an engine's cylinders. The bore is the diameter of the circular chambers cut into the cylinder block.
To simplify:
Examples: The 427 Chevy bore is 4.312 in, and the stroke is 3.65 in, therefore the displacement for this eight-cylinder engine is:
- 3.1416/4 × (4.312 in)2 × 3.65 in × 8 = 426.4 cu in
Or: (4.312 in)2 × 0.7854 × 3.65 in × 8 = 426.4 cu in
If the bore is 10 cm and the stroke is 5 cm with four cylinders, the calculation is:
- 3.1416/4 × (10 cm)2 × 5 cm × 4 = 1,570 cc = 1.57 liters
Read more about this topic: Engine Displacement
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