Mazda Skyactiv specs: 83.5 x 91.2 mm (3.2874 x 3.5906 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 121.9 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.287" |
| Stroke | 3.591" |
| Compression | 14.0:1 |
| Advertised power | 160 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| PE-VPS | 121.9 ci | 3.2874" × 3.5906" | 14:1 | 160 |
This family is represented by a single engine in the database: 121.9 ci, 4 cylinders, a 3.2874" × 3.5906" 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.