Planning an air-cooled VW engine build? Use this calculator to work out compression ratio, deck height, combustion chamber cc, or displacement. Questions about your build? Give us a call.
Air-Cooled VW Engine Calculator
Fill in what you know, then pick what to solve for: compression ratio, deck height, combustion chamber cc, or displacement. Works for any engine, not just VW.
| Bore | ||
| Stroke | ||
| Deck height | ||
| Combustion chamber | cc | |
| Compression ratio | : 1 | |
| Cylinders | ||
| Displacement | cc |
Solve for:
Example: a 2007cc with 90.5 mm bore, 78 mm stroke, 56 cc heads and 8.5:1 compression needs about .067" (1.69 mm) deck height. Deck height here is the gap between the piston top and the top of the cylinder at TDC; for the most accurate number, measure it with the shims you'll actually run.