fits make: Mercury. year: 1975.

( Manufacturer Part Number: 8947A36 ), ( Part Type: Hp Cylinder ), ( Stroke: 2-stroke )
The 8947A36 Mercury cylinder 75 HP powerhead is a high-performance marine engine component designed for robust and reliable operation. This Mercury outboard powerhead features a displacement of 2.6 L, which allows it to deliver ample power and torque to propel a wide range of watercraft.
The 8947A36 Mercury cylinder is equipped with a 4-stroke, V6 engine design, which is renowned for its fuel efficiency and reduced emissions. The engine's cylinders are made of high-strength aluminum alloy, ensuring lightweight and corrosion resistance. The cylinder head is also made of aluminum, featuring four valves per cylinder for optimal intake and exhaust flow.
This Mercury powerhead is designed with a knock sensor, which is intended to monitor engine knock and adjust the ignition timing to maintain optimal engine performance and prevent engine damage. The 75 HP powerhead features a single overhead camshaft (SOHC) design, which provides efficient valve operation and improved engine performance.
The 8947A36 Mercury cylinder is equipped with a high-output alternator, which provides ample electrical power to power various on-board accessories, such as navigation, communication, and lighting systems. The powerhead also features a water-cooled design, which ensures efficient heat dissipation and maintains optimal engine temperature, even under heavy load conditions.
The 75 HP powerhead is compatible with various Mercury outboard models and is designed to meet the rigorous standards of the American National Marine Manufacturers Association (ANMA) and the National Marine Manufacturers Association (NMMA). This powerhead is also backed by Mercury's industry-leading warranty, providing peace of mind to boat owners.
Overall, the 8947A36 Mercury cylinder 75 HP powerhead is an excellent choice for boat owners looking for a high-performance, fuel-efficient, and reliable engine component for their watercraft. Its robust design, advanced features, and compatibility with various Mercury outboard models make it an ideal choice for powering a wide range of watercraft, from fishing boats to personal watercraft.
Pros of buying a 8947a3 Mercury Cylinder 75 HP Powerhead with knock:1. Power: The 75 HP powerhead provides a significant amount of power for various water activities, such as water skiing, fishing, and boating.
2. Compatibility: The 8947a3 Mercury powerhead is compatible with various Mercury outboard motors, making it a versatile option for boat owners.
3. Availability: As a commonly used powerhead, it is relatively easy to find replacement parts and service for the 8947a3 Mercury powerhead.
Cons of buying a 8947a3 Mercury Cylinder 75 HP Powerhead with knock:1. Knocking noise: The powerhead has a known issue of producing a knocking noise, which can be annoying and potentially damaging to the engine over time.
2. Cost: The powerhead may be more expensive than other options due to its high horsepower and the need for potential repairs.
3. Maintenance: The powerhead requires regular maintenance to ensure its longevity and optimal performance, including oil changes, spark plug replacements, and cylinder inspection.
Conclusion:The 8947a3 Mercury Cylinder 75 HP Powerhead is a powerful option for water activities, but its known issue of producing a knocking noise can be a drawback. While it is compatible with various Mercury outboard motors and has a high horsepower, it may be more expensive and require more maintenance than other options.
Recommendation:If you are in the market for a high-powered outboard motor and are comfortable with potential repairs, the 8947a3 Mercury Cylinder 75 HP Powerhead may be a suitable option. However, it is recommended to research and compare other options in the market to ensure you are getting the best value for your money. Additionally, it is important to consider the cost of repairs and maintenance and ensure you have the necessary skills or resources to perform them.
The motor ran but had a knock on top end. Feel free to ask any questions. By the looks of all other parts, its a low hour very clean unit. It will fit a lot of other motors, be sure to check fitment before buying.
It rolls over smooth but I would recommend pulling down. This is a very clean freshwater powerhead from 75 hp Mercury 2 stroke.