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yamaha canada



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yamaha canada

They may be called "PVA" by Arctic Cat, "Rave" Ski-Doo or "VES" Polaris. If you have a time of 2 - Snowmobiles done in the past 15 years, the engine power is probably equipped with variable valve. If this is the case, you probably know it must be very diligent in cleaning and operation. A component of the engine should be checked regularly to maintain peak performance.

Power variable exhaust valve device phones are in the engine exhaust port. Every brand change is here to provide essentially the same service and that is to vary the height and width of the port exhaust as the engine speed. This considerably extends the power range. At low revs, the valves are closed, which advocates a more complete combustion. This improves the torque at low speeds and minimizes unburned gases in the exhaust. At high revs, the valves are open allowing the flow of exhaust gases optimal. This allows the engine to rev freely and produce maximum power at high speed. Older systems were powered by a mechanical system that opens and closes valves based on engine RPM. Modern systems are driven by servo electronics, including the precise position of valves throughout the rev range. Before the arrival of the feed valve, engine manufacturers have to determine the size and shape of the exhaust port and exhaust pipe. If this default engine for optimum power delivery, whether in high, medium or low speed range. The supply valve allows the engine to two cycles of saddle horses used throughout its operating range of RPM.

The modern system of the feed valve has developed a series of variations over the past 30. Yamaha was the first company to find success with this concept when he joined a variable valve system in its power 2-Grand Prix racing motorcycle road racing in the 1970s. Technology continued its road trip production motocross Yamaha and early 1980. Other manufacturers motorcycles are quickly brought their own systems. Early 1990s, virtually all high performance motorcycles with two cycles, all vehicles land, personal watercraft and snowmobiles are equipped with the systems of variable exhaust valve.

Keep the power valve system clean is vital. That the inlet valves are located directly in the flow of exhaust gas stream, carbon deposits can accumulate on the valves over time. The accumulation of deposits may alter the shape of the exhaust valves and change the flow characteristics of the engine. The damage in extreme cases, the port exhaust can be completely blocked and costly it can happen. Deposits can also can prevent the movement of the valves or leave them in one place. Either of these scenarios will seriously affect the power delivery and performance of your engine.

The task of keeping his snowmobile power system valve not complicated. Your service or owner's manual will give specific instructions on how to remove and clean the system. Be careful when cleaning the valves, as you not to scratch or rough surfaces. The manual will also provide a specific service interval and must be followed religiously.

Once the valves are clean, there are ways to avoid premature filing of the valve. First make sure your computer is set correctly. Carburetor jet too rich is a major contributor to this disease. Rich jet allows excess fuel in the combustion chamber, which promotes the formation of carbon. If your sled is injection make sure the system works correctly. Also make sure your injection system of oil reaches the correct amount of oil. Perform regular readings the spark plug as described in your manual. If readings are out of your data and you can not determine the cause, contact your dealer.

Other important factor to food presentation valve is the use of poor quality 2 cycle oil. Master cheaper stocks and additives used in oils lower quality can be cooked in carbon stocks very quickly. Premium quality synthetic two cycle oil is known for its combustion characteristics clean and significantly reduce the rate of deposit formation. Synthetic oils of good quality using base oils and additives sophisticated high temperature, that are designed to prevent hopper valve. They also have an effective detergent / dispersant package allowing a long operation cleaner. When there are two oil injectors stroke, which really pays. Costs more about oil that is specifically designed for operating power to provide clean running not only improve the performance of your engine, save yourself the headache and expense that come with the valve feeding premature filing.

Snowmobile use RPM low speed and stable over long periods can also promote the accumulation deposits. During this type of operation, valves to maintain a fixed position, which can form deposits. If the valves are constantly changing positions, there is less chance of deposits formed and enlarged.

Variable intake valves exhaust gas have revolutionized capacity of 2-stroke engines. With a little maintenance and care, offer a free performance problems.

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