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Old 07-26-2019, 03:41 PM   #16
Senior Member
City: Qualicum Beach, Vancouver Island
Country: Canada
Vessel Name: Capricorn
Vessel Model: Mariner 29 - Express Cruiser 1969
Join Date: Feb 2019
Posts: 413
Mercury propoganda. The following video shows the 6.2 l engine with 300 hp, it also comes in a 350 hp package as I have. But you will here the changes made to the engine design:

The 350 at the Paris show: Just a panning video of the engine

And finally (I got the optional fresh water cooling):

The MerCruiser 6.2L sterndrive platform – like the recently introduced MerCruiser 4.5L V-6 platform for 200hp and 250hp engines – was designed and is manufactured at Mercury Marine’s world headquarters in Fond du Lac, Wisconsin. Mercury designed and built the 6.2L engine specifically for marine use rather than adapting and marinizing an automotive engine. The company said the 6.2L is not burdened with automotive restrictions and unnecessary technologies that result in additional cost and complexity without adding value.

The MerCruiser 6.2L engine offers a runner scrolled intake manifold that optimizes airflow for higher torque, which translates into greater acceleration and improved boat performance. High displacement provides a more enjoyable and safer boating experience by letting consumers plane their boat quickly, handle rough seas better and stay on plane at lower speeds.

The 6.2L V-8 also offers Adaptive Speed Control (ASC), which automatically maintains a set RPM point regardless of load or condition changes, such as tight turns, tow-sport activities and lower speeds on plane. The result is increased throttle response and a “sportier” feel for the driver, who no longer has to make continual throttle-control adjustments. An option for the 6.2L V-8 with DTS is Axius Joystick Piloting for Sterndrives, providing the ultimate in docking experience and maneuverability.

“The new 6.2-liter V8 engine is another outstanding example of a Mercury product designed from the ground up with technologies, design features and materials that deliver unmatched value to our marine customers,” said David Foulkes, chief technology officer for Brunswick Corporation and vice president of Mercury product development, engineering and racing. “It joins our extensive and proven portfolio of products that provide exceptional performance, fuel economy, durability, smoothness and quietness, combined with intuitive operation, service and maintenance.”

An air-intake resonator on the 6.2L suppresses harsh sound frequencies throughout the engine operation range, while an all-new, aft-facing throttle body directs noise away from the cockpit for easier conversation. Larger and optimized engine mounts isolate undesirable engine vibration and reduce resonant vibration sounds.

The 6.2L is available with optional freshwater cooling and the SeaCore drive corrosion protection treatment, which provides extra corrosion protection only when needed, such as saltwater environments. Freshwater cooling uses a heat exchanger and coolant fluid to maintain engine temperature, rather than raw water from a lake or ocean. The coolant travels through the engine and the exhaust manifolds, and prevents internal corrosion of the cooling passages. The SeaCore drive is a hard-anodizing process that alters the surface layer of the aluminum drive casting to prevent saltwater penetration that leads to corrosion.
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