Is Replacing Valves Considered a Major Overhaul?

[LeLeila]

Replacing valves in a car is considered a major overhaul project. Below is a detailed introduction to major car overhaul projects: Engine Overhaul: Mainly involves replacing valves, pistons, bearing shells, cylinder boring, and crankshaft grinding. Generally, replacing pistons requires a complete set. Cylinder boring is a common repair method for excessively worn dry cylinder liners, and the eccentric method can be used to reduce the amount of boring. Transmission Overhaul: Primarily involves replacing internal transmission components, including gears, gear oil pumps, bearings, and sealing gaskets. Frame Overhaul: Typically involves physical correction, straightening bent car frames on a calibration bench.