Bore, stroke, displacement and compression for all 4 Mercury Cologne engines. Compare variants side by side.
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 256 | 256 ci | 3.9528" × 3.5" | 9:1 | 205 |
| 255 | 255 ci | 3.9528" × 3.5" | 9:1 | 145 |
| 4.0 SOHC | 245 ci | 3.9528" × 3.3228" | 9.7:1 | 210 |
| 2.8L V6 | 170 ci | 3.6614" × 2.6969" | 8.7:1 | 109 |