Mitsubishi 6A1 specs: 78.4 x 69 mm (3.0866 x 2.7165 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 122 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.087" |
| Stroke | 2.716" |
| Compression | 10.0:1 |
| Advertised power | 197 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 6A12 | 122 ci | 3.0866" × 2.7165" | 10:1 | 197 |
This family is represented by a single engine in the database: 122 ci, 6 cylinders, a 3.0866" × 2.7165" 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.