![]() At minimum planing speed, we are revving some shy of 3000 rpm and burning less than 20 liters per hour. But we have to take into account the stream of the river and the four people aboard. We can’t pass the 5000 rpm limit, while Mercury got to 5200 in their tests. Acceleration is very good, and our 200 Sundeck gets to planing in 5,7 seconds and revs up to 4900 rpm in 21,8 seconds. We move along the river, where in some parts we can speed up using all the thrust from the Bravo Three 22.5” propeller. And I have to add another point to the score board: this engine is pretty silent as well, 73 dB with open hood (and some wind in the background). This is not an invitation to fill this space with any sort of gear…just a confirmation that the new unit is much more compact than the previous one, which we see in the boat beside us. No problem as there’s no need for a direct comparion between the single and twin solution. Once aboard the Sea Ray 220 Sundeck, 22 feet and less than two tons, I immediately appreciate how the small engine leaves much room in the engine bay. The water of the lake is struck by strong wind, and waves force us to test the smaller boat on the river while the larger can face the “rough” water. The single mount could be compared to the glorious V8 5.0 ‘small block’. For us, a Sea Ray 220 Sundeck with single engine and a Sea Ray 310 Sundancer with twin units and joystick controls. Pfeifer statements, we flown all the way to Fond du Lac for a sea trial on Winnebago lake. In order to test in advance the new MerCruiser 4.5L V6 250 HP, and proof Mr. The MerCruiser 4.5L V6 sets new standards in acceleration and performance thanks to a great power-to-weight ratio: it’s 59 Kgs lighter than the ‘small block’ V8, with similar performance”. “We’re glad to start next-gen engines with this innovative unit – said Mercury Marine chairman John Pfeifer. And this already is a big news: until today, engines derived from blocks made for the automotive industry, while now the project is 100% “Made in Mercury”. ![]() So here’s the new MerCruiser 4.5L V6 250 HP, sterndrive inboard engine entirely designed in Fond du Lac, Wisconsin, where the Mercury Marine headquarters are located. The main target was simple as much as surprising: move away from the ever more complex automotive blocks, and make a pretty simple engine, reliable and sturdy, good for developing an entire range and win over competitors for weight, size and performance. With the new MerCruiser 4.5L V6 250 HP, Mercury expands to the inboard range the philosophy based on tough, simple and oversized engines, made to be reliable, low-maintenance and powerful The improved underwater hydrodynamics helped to reduce water resistance, increase stability at high speeds and optimize fuel consumption.The cosmopolitan spirit of BoatMag International covers news and previews about products from allover the world, discovered in first person by its contributors at the main international shows and events. Or alternatively, to increase the free space on the aft platform of the boat by installing the engines closer to each other than it can be done with other outboards.Ī twin-screw design was developed especially for the V12, with the halves turning in opposite directions. On the other hand, you can install more outboards side by side on the transom, because now they don't need space to be fully raised to the transom. On the one hand, you can control even a big boat as smoothly as if it's not a boat, but a perfectly calibrated sports car. The use of such technology is designed to kill two or even three birds with one stone. Simply put, the underwater part of this engine rotates as the massive «head» of the motor remains at the same time motionless. Mercury has installed the world's first independent propeller turning system on an outboard motor. ![]() It's also the first outboard motor with two gears.Įven more interesting is the V12's turning system. ![]()
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