Is Replacing the Engine Cylinder Head Considered a Major Overhaul?
2 Answers
Replacing the engine cylinder head is considered a major overhaul. Below are specific precautions to take after an engine overhaul: 1. Keep the RPM under 3000. 2. Ensure the water temperature reaches at least 40°C before driving when starting cold. 3. Adhere to the vehicle's load capacity regulations and reduce the load accordingly. 4. Slow down and shift to a lower gear in advance, avoiding sudden braking. Here is additional information on engine maintenance methods: 1. Use qualified engine oil. 2. Use qualified coolant and antifreeze. 3. Regularly clean the radiator scale. 4. Regularly remove engine carbon deposits. 5. Regularly replace the three automotive filters. 6. Maintain a reasonable RPM.
I don't consider replacing an engine cylinder head as a true overhaul—it's more of a medium-level repair at most. A major overhaul typically refers to a complete engine rebuild, such as disassembling to inspect internal components, replacing pistons, valves, or bearings, etc. Replacing the cylinder head, on the other hand, is done when there's an issue with the top cover of the engine, like cracks or seal failure, and it's relatively simpler. I've handled this job a few times, and it usually takes just a few hours to complete, with low costs. However, cylinder head replacement still requires caution—if done improperly, it can affect engine sealing or the cooling system, leading to coolant leaks or overheating. After the repair, it's advisable to check if the engine runs smoothly to ensure no additional issues arise. Overall, there's no need to stress too much; regular maintenance can help reduce the need for such repairs.
