What is the standard valve clearance for 465?
2 Answers
465 valve intake 0.2, exhaust 0.30. Here is the relevant information: 1. Valve clearance: Valve clearance, when the engine is working, the valve will expand due to the increase in temperature. 2. The harm of too small valve clearance: If there is no gap or the gap is too small between the valve and its transmission parts in the cold state, then in the hot state, the thermal expansion of the valve and its transmission parts will inevitably cause the valve to close improperly, resulting in air leakage during the compression and power strokes of the engine, thereby reducing power, and in severe cases, it may even be difficult to start. 3. Solution: In order to eliminate this phenomenon, a certain gap is usually left between the valve and its transmission mechanism when the engine is assembled in the cold state to compensate for the expansion of the valve after heating. This gap is called the valve clearance.
I recall that the valve clearance standard for the 465 engine is generally 0.20-0.25 mm for the intake and 0.25-0.30 mm for the exhaust when cold. This setting is crucial—too small a clearance can cause the valves to not close properly, leading to engine overheating or valve damage; too large a clearance can result in abnormal noise and reduced power. In practice, I first use a feeler gauge to carefully measure the valve clearance, ensuring the engine is completely cooled before making adjustments. For tools, a wrench and feeler gauge are essential, and remember to turn carefully after loosening the screws. If the clearance is off, fuel consumption may spike by over 10%. Regularly checking every 20,000 km can save significant fuel and repair costs.
