Snowmobile Power Valves - Polaris, Ski-Doo and Arctic Cat basic variable exhaust valve system
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It can be a cat "APV" Arctic "RAVE" Ski-Doo or "VES" Polaris. If you made a 2-stroke snowmobiles in the past 15 years, just the engine is probably equipped with "variable exhaust power valves." If this is the case, you probably know that you have to be very diligent about their cleanliness and operation. This is an engine component that must be monitored regularly to maintain optimal performance should.
Variable exhaust power valves are located on mobile devicesGas engine exhaust port flow. Each variant of the brand is to provide the same essential service and that is to vary the height and width of the outlet of the motor speed. This greatly expanded the power band. At low speeds, the valves in the closed position, which promotes more complete combustion. This improves low-end torque and minimizing the residual gases in the exhaust stream. At high speeds, the valves are open, which allows an optimal flow of exhaust. This allows the engine speedfreely and to produce maximum power top end. On older systems were operated through a mechanical valve opens and closes according to engine speed. Modern systems are electronic actuators, the exact position of the manually operated valves in the range of speeds. Before the advent of the power valve, engine manufacturers must determine the size and shape of exhaust pipes and exhaust. This indicated that the engine would provide its optimum power output in both the highMid-range or low speed. The inlet valve allows two-stroke engine, used to provide power throughout the speed range of operation.
The modern power valve system was developed by a number of different variations over the past 30 years. Yamaha was the first company to success with this approach if they are integrated with a variable exhaust valve system power in his two-stroke Grand Prix Road-racing motorcycles at the end of 1970. The technology also has made its way to production line Yamahamotocross and early 1980. Other motorcycle manufacturers soon with their systems. Since the early 1990's, virtually all high-performance two-stroke motorcycles, ATVs were the watercraft and snowmobile equipped with variable valve supply drain.
Keep the power valve system is clean of the utmost importance. As power tubes can be removed directly in the flow of exhaust gases accumulate carbon deposits on valves over time. The depositStructure can alter the shape of the valves and change the flow characteristics of the engine exhaust stream. In extreme cases, the exit hole damage may occur congested and expensive. Deposits may also hinder the movement of the valve or may leave them stranded in one place. Each of these scenarios drastically affect the power supply and motor output.
The task of caring for your snowmobile power valve system is not complicated. Your service or give instructionsspecific instructions to remove and clean the system. Be careful when cleaning the valves you want not to scratch or roughen the surface. The manual will also be possible to specify a particular service, and should be followed religiously.
Once the valves are clean, there are ways to prevent the untimely filing of the valve. First of all is to ensure that the device is set correctly. Carburetor jet is too rich an essential factor for this disease. Rich-rayallow too much fuel into the combustion chamber and this favors the formation of soot. If your sled is fuel injected, make sure the system functions properly. Also make sure that your oil injection system ensures the right amount of oil. Perform regular candle readings, as described in the manual. If your readings are off and plug is not possible to determine the cause, contact your dealer.
Another important contribution to the filing of the supply valve is the use of poor quality 2-strokeOil. The economic base oils and additives used in low quality oils can be cooked very quickly in carbon deposits. Synthetic high-quality two-stage oil is known for its clean burning characteristics and drastically reduce the rate of formation of deposits. Use good quality oils and synthetic additives and sophisticated base material at high temperatures to prevent the valve technology for food storage. They also have an effective detergent / dispersant package that allows much cleanerOperation. When it comes to two-stroke oil injection is, you get what you pay for. Spend a little 'more oil that has been specifically designed to provide clean energy implementation of the valve is not only the engine performance, save the headaches and expenses that come with the initial deposit power valve.
Snowmobiles can be a low-speed and constant speed for a longer period worked to promote deposit build. While this type of operation, maintenance, one of valvestationary and can form deposits. If the valves are constantly changing positions, it takes less opportunity to build and size.
Variable exhaust power valves have revolutionized the possibilities for two-stroke engines. With a little 'care and maintenance, providing trouble-free operation.
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