What is the impact of cylinder head resurfacing on engine power?

[DeClayton]

The impact of cylinder head resurfacing on engine power is as follows: Negative effects: After resurfacing the cylinder head, the displacement does not decrease, but the combustion chamber volume reduces, leading to an increased compression ratio and a higher probability of engine knocking. Positive effects: It ensures the cylinder is sealed without air leakage, allowing the compressed air-fuel mixture to burn and push the piston to perform work. Characteristics of a damaged cylinder head: After starting the engine, one or two cylinders may not function properly, producing abnormal noises. The radiator continuously loses water, bubbles emerge from the radiator filler neck, or oil droplets appear on the surface of the coolant. Measures for cylinder head cracks: Cylinder head bolts should be tightened evenly, and the fuel supply timing should be correctly adjusted. Soft water should be used in the radiator, and water changes should be minimized. The engine should avoid prolonged operation under overload conditions.