Mercury 122ci specs: 3.386 x 3.386 in (86 x 86 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 121.9 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.386" |
| Stroke | 3.386" |
| Years | 1984–1986 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Mazda RF 2.0 diesel | 121.9 ci | 3.3858" × 3.3858" | — | — |
This family is represented by a single engine in the database: 121.9 ci, 4 cylinders, a 3.3858" × 3.3858" bore and stroke.
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.