Yamaha F100 (Early 4-Stroke) vs Force 90hp (2-Stroke)
F100 (Early 4-Stroke)
90hp (2-Stroke)
| Spec | Yamaha F100 (Early 4-Stroke) | Force 90hp (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 100 HP | 90 HP |
| Displacement | 1596 cc | 1622 cc ← |
| Configuration | 4 Cyl / Inline | 3 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 168 kg (370 lbs) | 129 kg (284 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.31 | 1.93:1 |
| Alternator | 288 W ← | 192 W |
| Fuel Delivery | EFI | Carbureted |
| Maintenance | ||
| Spark Plug | NGK LFR6A-11 | Champion L76V |
| Engine Oil | Yamalube 4-M | 50:1 Pre-mix |
Technical Comparison Analysis
Power & Displacement
Comparing the Yamaha F100 (Early 4-Stroke) and Force 90hp (2-Stroke) shows a displacement difference of 26cc. The Force features a larger 1622cc 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 Force is the lighter option at 129kg, offering a weight saving of 39kg 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 Yamaha offers the best charging performance with a 288W 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.