Acura Honda P-series specs: 73 x 79 mm (2.8740 x 3.1102 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 61 ci |
|---|---|
| Cylinders | 3 |
| Bore | 2.874" |
| Stroke | 3.110" |
| Compression | 10.0:1 |
| Advertised power | 127 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| P10A | 61 ci | 2.874" × 3.1102" | 10:1 | 127 |
This family is represented by a single engine in the database: 61 ci, 3 cylinders, a 2.874" × 3.1102" 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.