Mercury 140ci specs: 3.781 x 3.126 in (96 x 79.4 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 140 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.781" |
| Stroke | 3.126" |
| Compression | 9.7:1 |
| Advertised power | 160 hp |
| Years | 2006–2009 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Duratec 23 | 140 ci | 3.781" × 3.126" | 9.7:1 | 160 |
This family is represented by a single engine in the database: 140 ci, 4 cylinders, a 3.781" × 3.126" 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.