Deformation of the cylinder head overhaul Know?

If the cylinder block and cylinder head junction deformation, it is recommended to use a ruler on a flat surface, and then the ruler to measure the gap between the ruler and the plane; it may be painted with red lead oil, then grind to observe the contact patch to ascertain the status warping. General requirement is less than the combined length of 600mm when flat, flatness error allowable value is O. 05mm, combined with the plane is longer than 600mm, less than 1000mm, when permitted flatness error is 0.10mm; if a non-monolithic cylinder headflatness error tolerance can be slightly more. Cylinder block and cylinder head plane if uneven, warped, or you can use the milling machine equip...