Why do you want to check the height of the cylinder head?

Check whether the cylinder height meets the requirements.

After the flatness of the joint surface of the cylinder head exceeds the standard, the cylinder gasket will be unevenly stressed, resulting in water leakage, air leakage and gas channeling between adjacent cylinders, which will seriously damage or even damage the cylinder gasket. Therefore, when the engine is overhauled, the height of the cylinder head must be checked.