Opening salvo: it is about V-6 stern drive engines for 2015

“There isn’t a single GM part on this engine,” Seabuddy quotes Brett Martin, a MerCruiser manager at Mercury Marine. This engine was purpose-built for marine use and delivers Mercury’s proven performance, durability and ease of service.”. All of its parts need to come from Mercury Marine and its dealers. No pistons, rings, cranks, etc are from a GM car engine.

“We are proud to introduce the next generation of stern-drive technology with this ground-breaking new engine,” said John Pfeifer, the president of Mercury Marine. “This engine was purpose-built for marine use.”

Major components of the MerCruiser 4.5L engine include a newly designed rear-facing throttle body, a special anti-whistle throttle plate, engine cover and mounts, lightweight flywheel, fuel supply module and structural oil pan” Mercury Marine has taken the initiative to design a lightweight, high-displacement V-6 marine engine that is not dependent on automotive technology,” said Buck Pegg, from Chaparral Boats The 4.5L V-6 the engine was built with cast-iron componentry wherever the engine encounters seawater and corrosion-resistant aluminum and composites everywhere else. Digital rather than analog sensors are used throughout the engine.

It has been noted that he 4.5L can be installed in single- and twin-engine applications and it is compatible with company’s full series of Alpha and Bravo drives. Fresh design innovations such as a long runner and scrolled intake manifold as well as the higher displacement than the Chevy V-6 , which allows for an good power-to-weight ratio.

Mercruiser marine v 6 gas engine

2015 Mercury Marine new engine

This V-6 engine weighs about 130 pounds less than a 5.0L V-8 Chevy small block, yet provides similar on-the-water performance within a smaller boat. With a shorter stroke than a Chevy V-6 engine, the power comes on higher and one can prop your boat to run as much as 5,200 rpms at W.O.T.
A V-6 engine allows for a bigger cockpit by about 6-8 inches. In a small boat that will make any boat more family friendly than the bigger engine box or sun pad that a V-8 requires.

 

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