MARINE POWER LTD

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6LY2A-STP 440hp
High Performance Straight six

Why A Six?

For boats, the ability to slot an engine as low down as possible, or to mount twin engines low in the vee of the boat has been critical. The straight six has thus become the configuration of choice, as the crankshaft is still no so long as to require heavy strengthening, there is more capacity advantage over a four, and a six is far narrower than a vee-eight.

History Of The Engine

The release of the 6LY2A-STP increased the horsepower available in Yanmar's 6LY series, providing a formidable line-up of engines that have already achieved victory in international powerboat races. The smaller capacity 6LYA-STP, has a big brother! The high power-to-weight ratio, the low slung configuration, the virtually square end profile of 709 x 708 mm for maximum compactness, and the intercooler turbo are all there. But the output has jumped by a massive 51.5kW (70hp)!

Mounting

The mountability is excellent due to its flat top, due to its compact marine gear that is bottom level with the sump, and due to its narrow profile. Re-powering a petrol engined boat is now a pleasure, for this engine has more muscle and endurance to match virtually whatever was previously being used.

Features

Race proven performance is inherited from its smaller capacity brother. Power-to-weight ratio is even more startling. Endurance and fuel economy are at a level that only a diesel could achieve.
It follows current user trends, i.e. the demand for more power and more speed. And because it is a diesel, smaller fuel tanks can be sued saving hundreds of kg of weight in a fast boat. A speed increase becomes immediately possible.
Direct injection using ultra-high-pressure fine mist injectors makes for excellent economy together with superb performance, yet there is minimal smoke under hard use conditions. Fuel savings, precious energy savings, and an increase in safety accompany the change to a diesel.
All service points are conveniently placed high on the engine. Renowned Yanmar reliability and parts backup complete the package.
An engine that will dramatically lift the performance of virtually ANY hull, and likely put you in the race winners seat too, if you so desire.

Click here for dimensions and performance curves