Mariner 150hp Magnum III (2-Stroke) vs Johnson 135hp Crossflow V4
150hp Magnum III (2-Stroke)
135hp Crossflow V4
| Spec | Mariner 150hp Magnum III (2-Stroke) | Johnson 135hp Crossflow V4 |
|---|---|---|
| Power & Performance | ||
| Horsepower | 150 HP | 135 HP |
| Displacement | 2507 cc ← | 1600 cc |
| Configuration | 6 Cyl / V6 60° | 4 Cyl / V4 90° |
| Weights & Dimensions | ||
| Dry Weight | 179 kg (395 lbs) | 142 kg (313 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 1.87:1 | 1.86 |
| Alternator | 480 W ← | 126 W |
| Fuel Delivery | Carbureted | Twin Carbureted |
| Maintenance | ||
| Spark Plug | NGK BUHW | Champion QL77JC4 |
| Engine Oil | TC-W3 (50:1) | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Mariner 150hp Magnum III (2-Stroke) and Johnson 135hp Crossflow V4 shows a displacement difference of 907cc. The Mariner 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 142kg, offering a weight saving of 37kg 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 Mariner offers the best charging performance with a 480W 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.