Johnson 20hp (2-Stroke) vs Tohatsu M18E2 (2-Stroke)
20hp (2-Stroke)
M18E2 (2-Stroke)
| Spec | Johnson 20hp (2-Stroke) | Tohatsu M18E2 (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 20 HP | 18 HP |
| Displacement | 360 cc ← | 294 cc |
| Configuration | 2 Cyl / Inline | 2 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 38 kg (84 lbs) ← | 41 kg (90 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 2.15 | 1.85:1 |
| Alternator | 60 W | 80 W ← |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | Champion L77JC4 | NGK B7HS-10 |
| Engine Oil | TC-W3 2-Stroke | TC-W3 (50:1) |
Technical Comparison Analysis
Power & Displacement
Comparing the Johnson 20hp (2-Stroke) and Tohatsu M18E2 (2-Stroke) shows a displacement difference of 66cc. The Johnson features a larger 360cc 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 38kg, offering a weight saving of 3kg 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 Tohatsu offers the best charging performance with a 80W 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.