Parsun F8 (4-Stroke) vs Mercury 7.5hp (2-Stroke)
F8 (4-Stroke)
7.5hp (2-Stroke)
| Spec | Parsun F8 (4-Stroke) | Mercury 7.5hp (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 8 HP | 7.5 HP |
| Displacement | 197 cc ← | 179 cc |
| Configuration | 2 Cyl / Inline | 2 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 38 kg (84 lbs) | 24 kg (53 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.08 | 2.0 |
| Alternator | 84 W ← | 60 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | NGK BR6HS | NGK B7HS |
| Engine Oil | Parsun 4-Stroke Oil | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Parsun F8 (4-Stroke) and Mercury 7.5hp (2-Stroke) shows a displacement difference of 18cc. The Parsun features a larger 197cc 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 24kg, 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 Parsun offers the best charging performance with a 84W 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.