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Technical Articles About Boat Motors and More

Thinking about a refit?

Here are some recommendations when considering a purchase-and-refit boat.

• Attend the prepurchase survey for insight into whether the boat has “good bones” and is capable of accommodating your changes.

• Check out as many designs in person and online as possible to broaden your frame of reference.

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The best testing is real-world testing

Cummins' test boat was rigged with its new joystick system for inboards at the press event.About 10 percent of FLIR Maritime’s annual revenue is set aside for research and development, and a big chunk of that is spent testing products. Most manufacturers of engines and marine electronics operate their own on-water test centers, with one or more boats.

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The Smart Buyer - What to consider when considering a refit

The refit of this Mako involved building a full-height transom to accept an engine bracket.Refitting a boat can be an enjoyable and rewarding task if you undertake it with the proper attitude and planning. For the purposes of this article, I’ll limit the discussion to smaller boats, as refits on larger yachts generally include project managers, interior designers and naval architects.

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New outboards, sterndrives and integrated systems

The Mercury Verado gets its impressive midrange acceleration from a supercharger that has electronic boost control.Sterndrive, outboard, diesel, electric — you name it, we’ve seen it in the new product releases from engine companies over the past year.

Outboard manufacturers have been pushing out second-generation 4-strokes, several new sterndrives have hit the market, and diesels continue to improve, with better fuel efficiency, lower emissions and increased performance.

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The ‘grunt’ factor and midrange punch

Yamaha's variable camshaft timing technologySome of the engines from Mercury, Yamaha, Volvo Penta and others that are mentioned in this month’s propulsion roundup are equipped with technologies that boost midrange acceleration and performance. One of those technologies is variable valve timing.

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