Porsche 102ci specs: 90 x 66 mm (3.5433 x 2.5984 in) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 102 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.543" |
| Stroke | 2.598" |
| Compression | 8.2:1 |
| Advertised power | 80 hp |
| Years | 1970–1973 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| VW Type 4 | 102 ci | 3.5433" × 2.5984" | 8.2:1 | 80 |
This family is represented by a single engine in the database: 102 ci, 4 cylinders, a 3.5433" × 2.5984" bore and stroke.
All are oversquare — bore larger than stroke, which favours revs over low-end torque.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.