Yamaha F90 In-Line Four vs Johnson 85hp Crossflow V4
F90 In-Line Four
85hp Crossflow V4
| Spec | Yamaha F90 In-Line Four | Johnson 85hp Crossflow V4 |
|---|---|---|
| Power & Performance | ||
| Horsepower | 90 HP | 85 HP |
| Displacement | 1832 cc ← | 1632 cc |
| Configuration | 4 Cyl / Inline | 4 Cyl / V4 90° |
| Weights & Dimensions | ||
| Dry Weight | 160 kg (353 lbs) | 138 kg (304 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.15:1 | 2.00:1 |
| Alternator | 420 W ← | 144 W |
| Fuel Delivery | EFI | Twin Carbureted |
| Maintenance | ||
| Spark Plug | NGK LFR6A-11 | Champion QL77JC4 |
| Engine Oil | Yamalube 4-Stroke | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Yamaha F90 In-Line Four and Johnson 85hp Crossflow V4 shows a displacement difference of 200cc. The Yamaha features a larger 1832cc 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 Johnson is the lighter option at 138kg, offering a weight saving of 22kg 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 420W 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.