Cylinder Head Gasket Assembly

4 week ago

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5 month

Product details

The Cylinder Head Gasket Assembly is a critical sealing component of the engine, located between the cylinder head and cylinder block, responsible for sealing the combustion chamber, cooling water passage, and lubricating oil passage to ensure efficient engine operation. The following is a detailed description of the assembly: 1. Core functions Sealed combustion chamber: withstand high temperature and high pressure gas to prevent leakage. Isolate coolant and engine oil: block the water and oil channels from connecting to the outside to avoid mixing (such as preventing "oil-water mixing"). Maintain compression ratio: Ensure the airtightness of the combustion chamber, which affects engine power and efficiency. 2. Common types Type Material Composition Characteristics Applicable Scenarios Multi layer metal gasket with stainless steel/copper laminated structure, resistant to high pressure and high temperature, long service life for turbocharged/high-performance engines Composite gasket metal frame+rubber/graphite coating balance flexibility and sealing performance for ordinary household car engines Pure metal gasket with single-layer steel or aluminum has low cost, but poor adaptability to old car models or low load engines 3. Symptoms of malfunction External leakage: Oil or coolant seeps out at the edge of the gasket. Internal leakage: Engine oil mixed with coolant (emulsification phenomenon). The coolant enters the combustion chamber (white tail smoke, bubbling water tank). Insufficient cylinder pressure: difficulty in starting, decreased power (combustion chamber seal failure). 4. Precautions for replacement Surface treatment: Clean the cylinder head/body contact surface to ensure there are no scratches or deformations (professional tools are required to check the flatness). Torque specification: Tighten the cylinder head bolts step by step according to the manufacturer's standard (such as the "three-step tightening method") to avoid uneven force. Gasket direction: Some designs have positive and negative markings, and reverse installation may cause blockage of the oil circuit. 5. Preventive maintenance recommendations Avoid overheating: Regularly check the cooling system to prevent gasket burnout caused by high temperatures. Choose genuine products: Poor quality gaskets can easily cause early failure (original or well-known brands such as Fel Pro, Victor Reinz). Must be replaced during major repairs: As long as the cylinder head is disassembled, it is recommended to replace the gasket regardless of its appearance.

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