Johnson 4hp (4-Stroke) vs Evinrude 4hp Twin (2-Stroke)
4hp (4-Stroke)
4hp Twin (2-Stroke)
| Spec | Johnson 4hp (4-Stroke) | Evinrude 4hp Twin (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 4 HP | 4 HP |
| Displacement | 138 cc ← | 87 cc |
| Configuration | 1 Cyl / Inline | 2 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 25 kg (55 lbs) | 15 kg (33 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 1.65 | 1.65 |
| Alternator | 60 W | 0 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | NGK CPR6EA-9 | Champion L77JC4 |
| Engine Oil | 10W-30 Marine | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Johnson 4hp (4-Stroke) and Evinrude 4hp Twin (2-Stroke) shows a displacement difference of 51cc. The Johnson features a larger 138cc 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 15kg, offering a weight saving of 10kg 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 60W alternator. Choosing the right power-to-weight profile between these two 4-stroke engines depends heavily on your specific boat's displacement and daily power requirements.