Selva Piranha 9.9 vs Tohatsu MFS9.8 (4-Stroke)
Piranha 9.9
MFS9.8 (4-Stroke)
| Spec | Selva Piranha 9.9 | Tohatsu MFS9.8 (4-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 9.9 HP | 9.8 HP |
| Displacement | 181 cc | 209 cc ← |
| Configuration | 2 Cyl / Inline | 2 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 30.5 kg (67 lbs) ← | 37 kg (82 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 2.08 | 2.08:1 |
| Alternator | 84 W | 84 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | NGK DPR6EA-9 | NGK DCPR6E |
| Engine Oil | Selva Marine 4-Stroke | 10W-30 FC-W |
Technical Comparison Analysis
Power & Displacement
Comparing the Selva Piranha 9.9 and Tohatsu MFS9.8 (4-Stroke) shows a displacement difference of 28cc. The Tohatsu features a larger 209cc 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 Selva is the lighter option at 30.5kg, offering a weight saving of 6.5kg 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 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.