British Seagull Model 102 Century Plus vs Yamaha 4hp (2-Stroke)
Model 102 Century Plus
4hp (2-Stroke)
| Spec | British Seagull Model 102 Century Plus | Yamaha 4hp (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 4 HP | 4 HP |
| Displacement | 102 cc ← | 83 cc |
| Configuration | 1 Cyl / Single | 1 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 22 kg (49 lbs) | 21 kg (46 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.5 | 2.08 |
| Alternator | 0 W | 0 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | Champion D16 | NGK BR7HS |
| Engine Oil | SAE 30 (10:1) | Yamalube 2-M |
Technical Comparison Analysis
Power & Displacement
Comparing the British Seagull Model 102 Century Plus and Yamaha 4hp (2-Stroke) shows a displacement difference of 19cc. The British Seagull features a larger 102cc 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 Yamaha is the lighter option at 21kg, offering a weight saving of 1kg 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 0W 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.