Engine Size Calculator
Engine displacement table (CC’s) – I’ve worked out most of the main ones used in air cooled VWs… I think…
| Bore | 77 | 83 | 85.5 | 86 | 87 | 87.5 | 88 | 90 | 90.5 | 92 | 93 | 94 | 96 | 100 | |
| Stroke | |||||||||||||||
| 64 | 1192 | 1385 | |||||||||||||
| 69 | 1285 | 1493 | 1585 | 1603 | 1641 | 1660 | 1679 | 1755 | 1775 | 1835 | 1875 | 1915 | 1998 | 2168 | |
| 74 | 1904 | 1968 | 2054 | ||||||||||||
| 76 | |||||||||||||||
| 78.4 | 2017 | 2085 | 2176 | ||||||||||||
| 82 | 2087 | 2110 | 2180 | 2276 | |||||||||||
| 84 | 2161 | 2234 | 2332 | ||||||||||||
| 86 |
Formula for calculating Engine Displacement
BORE (mm) X BORE (mm) X STROKE (mm) X 0.0031416 = Engine Displacement in CC’s
Example: 92 X 92 X 69 X .0031416 = 1835cc
To get the volume for one (1) cylinder in CC’s, simply divide by four (4).
Example: 1835 ÷ 4 = 458.69cc
Formula for calculating Deck Volume
BORE (mm) X BORE (mm) X DECK HEIGHT (in.) X .01996 = Deck Volume
Example: 87 X 87 X .060″ X .01996 = 9.06cc
Formula for calculating Compression Ratio
(Head cc + Deck cc + 1 Cylinder volume) ÷ (Head cc + Deck cc) = Compression Ratio
Example: (50cc + 9.06cc + 410.25cc) ÷ (50cc + 9.06cc) = 7.95 OR 7.95:1
Or: 469.31 ÷ 59.06 = 7.95 OR 7.95:1
