February 22, 2011

Engine: Yanmar 8LV 370hp

Yanmar has developed a new 4.46 litre twin-turbo V8 diesel engine, coupled to a stern drive or gearbox; the 8LV 370hp. The engine is EPA Tier 3 compliant, and was shown to the public for the first time at the 2011 D├╝sseldorf Boat Show. The compact 8LV diesel can be installed in single or twin configuration, with the new, hydrodynamic Yanmar ZT370 dual propeller stern drive or KMH50 series transmission, down angle or V-drive. It has a twin turbocharger and common rail fuel injection for superior performance in terms of fuel economics and acceleration. There are four valves per cylinder. In the Yanmar tradition of high power from low weight, dry engine weight is just 450 kg. This is the first engine to use Yanmar’s own, newly developed CAN-bus vessel control system, the Yanmar VCS. It can be ordered with the new joystick, facilitating 360┬║ turn, sideways and diagonal movement. A key feature of the high torque 8LV is its wide power band. It idles at 550 rpm, capable of crawling speed in the marina, aided further by a hydraulic clutch, with both stern drive and gear configurations. Maximum engine speed is 3,800 rpm, well ahead of other engines in this segment. Further benefits are exceptionally low noise levels and minimised vibration, ease of installation and servicing, and the advantage of a powerful 12V / 180A alternator.The 8LV is expected to attract a wide variety of boat builders producing craft up to 45 feet for applications ranging from water skiing to cruising. Additionally, the engine will be used for re powering, offering the advantages of diesel over similar-sized V8 gasoline units.