Yamaha F80 (Early 4-Stroke) vs Mercury 75hp (3-Cyl 2-Stroke)
F80 (Early 4-Stroke)
75hp (3-Cyl 2-Stroke)
| Spec | Yamaha F80 (Early 4-Stroke) | Mercury 75hp (3-Cyl 2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 80 HP | 75 HP |
| Displacement | 1596 cc ← | 1165 cc |
| Configuration | 4 Cyl / Inline | 3 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 168 kg (370 lbs) | 131 kg (289 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.31 | 2.33:1 |
| Alternator | 288 W ← | 113 W |
| Fuel Delivery | EFI | Carbureted |
| Maintenance | ||
| Spark Plug | NGK LFR6A-11 | NGK BUHW-2 |
| Engine Oil | Yamalube 4-M | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Yamaha F80 (Early 4-Stroke) and Mercury 75hp (3-Cyl 2-Stroke) shows a displacement difference of 431cc. The Yamaha features a larger 1596cc 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 Mercury is the lighter option at 131kg, 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 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.