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Instead of the V-Boost on the original carbureted V-Max, the fuel injected VMAX uses YCC-I and YCC-T. Yamaha Chip Controlled Intake (YCC-I) is a new addition to the VMAX. The airhorns inside the airbox are lifted by a servo activated at 6,650 rpm to open up the airway underneath. This shortens the length of the intake system from 150 mm to 52 mm.
The OX66 uses a five-valve system derived from Yamaha's prior experience with five-valve technology, with three intake valves and two exhaust valves per cylinder. The use of five valves decreases the inertia of each individual intake valve (since they are smaller), but also offers more stable combustion under low-load conditions compared to ...
A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...
In 1984, Yamaha introduced their first four-stroke outboards, which were only available in the low-power range. In 1990 Honda released 35 hp and 45 hp four-stroke models. They continued to lead in the development of four-stroke engines throughout the 1990s as US and European exhaust emissions regulations such as CARB ( California Air Resources ...
Ford — Dual-Stage Intake (DSI), on their Duratec 2.5 and 3.0-litre V6s, and it was also found on the Yamaha V6 in the Taurus SHO. The Ford Modular V8 engines and the V6 Cologne use either the Intake Manifold Runner Control (IMRC) for four-valve engines, or the Charge Motion Control Valve (CMCV) for three-valve engines.
The Yamaha XS650 is a mid-size [2] motorcycle that was made by the Yamaha Motor Company. The standard model was introduced in October 1969, and produced until 1979. The "Special" cruiser model was introduced in 1978 and produced until 1985. The XS650 began with the 1955 Hosk SOHC 500 twin. After about 10 years of producing 500 twin, Hosk ...