Johnson 150hp Crossflow V6 vs Mercury 135hp V6 OptiMax
150hp Crossflow V6
135hp V6 OptiMax
| Spec | Johnson 150hp Crossflow V6 | Mercury 135hp V6 OptiMax |
|---|---|---|
| Power & Performance | ||
| Horsepower | 150 HP | 135 HP |
| Displacement | 2400 cc | 2507 cc ← |
| Configuration | 6 Cyl / V6 90° | 6 Cyl / V6 60° |
| Weights & Dimensions | ||
| Dry Weight | 172 kg (379 lbs) ← | 195 kg (430 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 1.86 | 1.87:1 |
| Alternator | 126 W | 720 W ← |
| Fuel Delivery | Triple Carbureted | DFI (Direct Injection) |
| Maintenance | ||
| Spark Plug | Champion QL77JC4 | NGK IZFR5G (Iridium) |
| Engine Oil | TC-W3 2-Stroke | Mercury OptiMax/DFI Oil |
Technical Comparison Analysis
Power & Displacement
Comparing the Johnson 150hp Crossflow V6 and Mercury 135hp V6 OptiMax shows a displacement difference of 107cc. The Mercury features a larger 2507cc 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 Johnson is the lighter option at 172kg, offering a weight saving of 23kg 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.