MerCruiser 5.0 Specs

By Keith Owings

The MerCruiser 5.0-liter engine, manufactured by Mercury Marine, was designed, according to boattest.com, to be affordable and dependable. It utilizes the Thunderbold V-ignition system. With this system, it is possible for carbureted engines to provide many of the same engine-management benefits associated with fuel-injection engines.

Engine Specifications

The MerCruiser 5.0-liter engine weighs 952 pounds and is 22 inches tall. It is 32 inches long and 30 inches wide. The V8 engine gets 260 horsepower, displacement of 305 cubic inches, normal aspiration, generates 4,600 to 5,000 revolutions per minute, has a bore of 3.73 inches and a 3.48-inch stroke. The alternator gets a 65-ampere output rating.

Fuel and Ignition System

The MerCruiser 5.0-liter engine uses 87 Octane fuel in its multi-point, electronic fuel-injection system. The ignition system uses a crank-fired, high-voltage switch with knock control. The cooling system is a thermostatically-controlled, raw-water system. The engine also has an iron-manifold exhaust system.

Special Features

The MerCruiser 5.0-liter includes a dry-joint exhaust system. This eliminates the chance of water leaking into the engine, and increases resistance to corrosion, according to MercuryMarine. The fuel filter separates water to prevent it from entering the fuel system. This engine also offers an exclusive alarm system, as notification of low oil pressure, high water temperature or excessive temperature in the transmission. A drive-lube monitor is affixed to the top of the engine, for quick accessibility.

Additional Information

Boattest.com states that the MerCruiser's 5.0-liter engine starts easily, regardless of temperature, due to its multi-port, fuel-injection system. It automatically adjusts for any weather or altitude changes. The report further states that this engine performs very well, regardless of environment.

About the Author

Keith Owings began writing professionally in 2010, with his work published on various websites. He worked for several years in the financial and travel agency industries. He has trained and coached employees in the art of customer service. Owings has a Bachelor of Arts in psychology from Dallas Baptist University and holds several financial licenses.