Motorcycles use mufflers to reduce the noise generated during high-temperature and high-pressure exhaust emissions to the allowable limit, so mufflers cannot be ignored and need to be maintained.
Maintenance instructions for motorcycle mufflers:
When it is difficult to start a cold car in winter, close the air damper; Start the engine and open the air damper promptly after warming up the car; Long term high-speed driving is prohibited.
2. It is prohibited to install windshields or other decorations in front of the engine and muffler, which may affect the heat dissipation of the engine and muffler.
3. Do not drive at low speeds for long periods of time under heavy loads, as this can damage the engine and muffler. Do not bomb the accelerator pedal in place for a long time. When there is oil stains on the surface of the muffler; After heating up the car, the surface will turn yellow and blue.
When there is a large amount of dirt on the surface of the muffler, it should be cleaned in a timely manner to avoid affecting its heat dissipation. When disassembling the muffler. Pay attention to whether the muffler is installed properly; Is it securely fastened; Prevent leakage; To avoid affecting the noise reduction effect and causing the muffler interface to turn yellow.
5. The maintenance of engine valve clearance, carburetor, air filter, etc. should be carried out according to the instructions in the car driving manual. Please go to the insurance repair shop for adjustment and cleaning in a timely manner. If the valve clearance is too small or the mixed gas is too thick or thin, it will affect combustion and also cause discoloration of the muffler. A motorcycle muffler is a device that allows airflow to pass through and attenuates noise, and is one of the important components on a motorcycle. The performance of a muffler not only affects the noise level of a motorcycle, but also has a significant impact on the engine's power, fuel consumption, torque, and other performance. In addition to its impact on the practical functions of motorcycles, people also have higher requirements for the sound of motorcycles.
The motorcycle exhaust pipes modified in the domestic market are generally divided into straight through motorcycle exhaust pipes and back pressure motorcycle exhaust pipes, each with its own advantages and disadvantages. The advantage of a straight through motorcycle exhaust pipe is that it provides stronger power than the original pipe during high-speed driving, resulting in increased fuel consumption and noise. The sound is more like a large displacement sports car, so it is very popular among motorcycle friends. However, when driving at low speeds, due to the lack of backpressure, there is a slight pause when refueling, especially for scooters.
The principle of the backpressure tube is to add one or more air chambers in the exhaust pipe to prevent engine exhaust gas from being directly discharged into the pipeline, allowing some of the exhaust gas to return to the cylinder and increase the pressure inside the cylinder, making the engine stronger and quieter at low speeds. Scooters rely on backpressure, so the exhaust pipes installed on scooters are basically backpressure pipes. The advantage of backpressure motorcycle exhaust pipes is low-speed oil, strong, but at high speeds, due to the structural relationship of the backpressure pipe, the engine cannot effectively discharge.
According to the material, it can be divided into aluminum alloy motorcycle exhaust pipes, stainless steel motorcycle exhaust pipes, carbon fiber motorcycle exhaust pipes, titanium alloy motorcycle exhaust pipes, etc., each with its own advantages and disadvantages. Aluminum alloy pipes are lightweight, come in a variety of colors, and are inexpensive. However, the surface of the pipes is prone to wear and tear, making them less durable than stainless steel pipes. Stainless steel pipes are heavy in weight, have fewer colors, but are more durable, and have a heavier sound than aluminum alloy pipes. Therefore, most modification enthusiasts prefer to choose stainless steel pipes, while carbon fiber pipes are lightweight and usually black carbon fiber.
A high-quality straight pipe has a low sound, but over time, oil and dust accumulate inside the core, causing the sound-absorbing material to fail and the sound to become louder. Therefore, after modifying the pipe for a period of time, remove it from the front, clean the dust and oil inside the core, and make the sound beautiful.
