Porsche 944 specs: 100 x 78.9 mm (3.9370 x 3.1063 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 151 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.937" |
| Stroke | 3.106" |
| Compression | 9.5:1 |
| Advertised power | 163 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| M44/01 | 151 ci | 3.937" × 3.1063" | 9.5:1 | 163 |
This family is represented by a single engine in the database: 151 ci, 4 cylinders, a 3.937" × 3.1063" 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.