Mercury 35hp (Inline-4) vs Johnson 35hp (3-Cyl 2-Stroke)
35hp (Inline-4)
35hp (3-Cyl 2-Stroke)
| Spec | Mercury 35hp (Inline-4) | Johnson 35hp (3-Cyl 2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 35 HP | 35 HP |
| Displacement | 650 cc ← | 521 cc |
| Configuration | 4 Cyl / Inline | 3 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 68 kg (150 lbs) | 54 kg (119 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.0 | 1.75:1 |
| Alternator | 113 W | 126 W ← |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | NGK BUHW (Surface Gap) | Champion QL77JC4 |
| Engine Oil | TC-W3 2-Stroke | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Mercury 35hp (Inline-4) and Johnson 35hp (3-Cyl 2-Stroke) shows a displacement difference of 129cc. The Mercury features a larger 650cc 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 54kg, offering a weight saving of 14kg 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 Johnson offers the best charging performance with a 126W 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.