Mitsubishi 4A9 specs: 75 x 90 mm (2.9528 x 3.5433 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 97 ci |
|---|---|
| Cylinders | 4 |
| Bore | 2.953" |
| Stroke | 3.543" |
| Compression | 11.0:1 |
| Advertised power | 115 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 4A92 | 97 ci | 2.9528" × 3.5433" | 11:1 | 115 |
This family is represented by a single engine in the database: 97 ci, 4 cylinders, a 2.9528" × 3.5433" bore and stroke.
All are undersquare — stroke larger than bore, favouring torque low in the range.
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.