Mercury 7.5hp (Blue Stripe) vs Scott-Atwater 7.5hp Fishing Scott

Mercury

7.5hp (Blue Stripe)

1978 · 7.5 HP · 2-Stroke
VS
Scott-Atwater

7.5hp Fishing Scott

1956 · 7.5 HP · 2-Stroke
Spec Mercury 7.5hp (Blue Stripe) Scott-Atwater 7.5hp Fishing Scott
Power & Performance
Horsepower 7.5 HP 7.5 HP
Displacement 180 cc ← 164 cc
Configuration 2 Cyl / Inline 2 Cyl / Inline-2
Weights & Dimensions
Dry Weight 29 kg (64 lbs) 26 kg (57 lbs) ←
Mechanical & Electrical
Gear Ratio 2.00:1 1.65
Alternator 0 W 0 W
Fuel Delivery Carbureted Carbureted
Maintenance
Spark Plug NGK BP7HS Champion J6C
Engine Oil 50:1 Pre-mix

Technical Comparison Analysis

Power & Displacement

Comparing the Mercury 7.5hp (Blue Stripe) and Scott-Atwater 7.5hp Fishing Scott shows a displacement difference of 16cc. The Mercury features a larger 180cc 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 Scott-Atwater is the lighter option at 26kg, offering a weight saving of 3kg 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 Scott-Atwater 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.