Mercury 90hp OptiMax vs Evinrude 85hp Crossflow V4
90hp OptiMax
85hp Crossflow V4
| Spec | Mercury 90hp OptiMax | Evinrude 85hp Crossflow V4 |
|---|---|---|
| Power & Performance | ||
| Horsepower | 90 HP | 85 HP |
| Displacement | 1522 cc | 1632 cc ← |
| Configuration | 3 Cyl / Inline | 4 Cyl / V4 90° |
| Weights & Dimensions | ||
| Dry Weight | 170 kg (375 lbs) | 138 kg (304 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.33:1 | 2.00:1 |
| Alternator | 720 W ← | 144 W |
| Fuel Delivery | DFI (Direct Injection) | Twin Carbureted |
| Maintenance | ||
| Spark Plug | NGK IZFR6J | Champion QL77JC4 |
| Engine Oil | Mercury OptiMax/DFI Oil | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Mercury 90hp OptiMax and Evinrude 85hp Crossflow V4 shows a displacement difference of 110cc. The Evinrude features a larger 1632cc 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 Evinrude is the lighter option at 138kg, offering a weight saving of 32kg 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 720W 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.