Engine Displacement Calculator (basic)
This calculator will determine the displacement of your engine. It requires 3 inputs: bore, stroke, and # of cylinders. For more detailed results information or to lookup engine data try the advanced displacement calculator.
The displacement of an engine, also called "swept volume", is the volume of air moved by all pistons as they move from the bottom to top of their stroke. Calculating displacement is fairly simple and can be done with high school geometry for volume of a cylinder. Things to keep in mind are:
- Length of cylinder = crank stroke
- Diameter of cylinder = bore
- Multiply result by number of cylinders
- Piston dome and combustion chamber have no effect on displacement. Whatever volume they add to one side of the cylinder is subtracted from the other side of the cylinder and so can be ignored.
Examples of Displacements
| Engine | Bore | Stroke | Cylinders | Actual Displacement | |||
|---|---|---|---|---|---|---|---|
| in | mm | in | mm | cu-in | cc | ||
| Buick 3.8 GNX turbo V6 | 3.80 | 96.52 | 3.4 | 86.36 | 6 | 231.36 | 3791.3 |
| Chevy 350 small block V8 | 4.00 | 101.60 | 3.48 | 88.39 | 8 | 349.85 | 5733.0 |
| Chrysler 426 hemi V8 | 4.25 | 107.95 | 3.75 | 95.25 | 8 | 425.59 | 6974.1 |
| Dodge Viper 8.4L V10 | 4.06 | 103.00 | 3.96 | 100.58 | 10 | 511.41 | 8380.5 |
| Honda S2000 F20C inline 4 | 3.43 | 87 | 3.32 | 84.4 | 4 | 122.47 | 2006.9 |
| Lambourghini 6.5L V12 | 3.74 | 95 | 3.01 | 76.4 | 12 | 396.56 | 6498.5 |
| Nissan GT-R 3.8 | 3.76 | 95.5 | 3.48 | 88.4 | 6 | 231.85 | 3799.3 |
| Volkswagen 2.0 inline 4 | 3.25 | 82.5 | 3.65 | 92.8 | 4 | 121.09 | 1984.3 |