Yamaha 225hp V6 OX66 EFI vs Mercury 225 OptiMax (2-Stroke)
225hp V6 OX66 EFI
225 OptiMax (2-Stroke)
| Spec | Yamaha 225hp V6 OX66 EFI | Mercury 225 OptiMax (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 225 HP | 225 HP |
| Displacement | 3130 cc ← | 3032 cc |
| Configuration | 6 Cyl / V6 76° | 6 Cyl / V6 60° |
| Weights & Dimensions | ||
| Dry Weight | 224 kg (494 lbs) ← | 225 kg (496 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 1.81:1 | 1.75:1 |
| Alternator | 504 W | 756 W ← |
| Fuel Delivery | EFI | DFI (Direct Injection) |
| Maintenance | ||
| Spark Plug | NGK BKR7EKU | NGK IZFR6J |
| Engine Oil | Precision Blend Injection | OptiMax / DFI Synthetic Blend |
Technical Comparison Analysis
Power & Displacement
Comparing the Yamaha 225hp V6 OX66 EFI and Mercury 225 OptiMax (2-Stroke) shows a displacement difference of 98cc. The Yamaha features a larger 3130cc block, which typically provides superior low-end torque and better hole-shot performance when pushing heavy loads or reaching planning speeds.
Weight & Rigging
In terms of transom weight, the Yamaha is the lighter option at 224kg, offering a weight saving of 1kg over its competitor. This weight reduction is critical for smaller hulls or boats with limited transom capacity where every kilogram affects the center of gravity and drainage efficiency.
Electrical & Features
For boats equipped with modern electronics, sonar, and shallow-water anchors, the Mercury offers the best charging performance with a 756W alternator. Choosing the right power-to-weight profile between these two 2-stroke engines depends heavily on your specific boat's displacement and daily power requirements.