What sort of surface finish should I have on my cylinder head?
There are different surface finishes for cast iron and aluminium cylinder heads. Here at Harris Engines we use the latest CBN (Cubic Boron Nitride) cutting tips for cast iron heads, and PCD (polycrystalline Diamond) tips for the aluminium heads. An incorrect finish can and will cause failure of the cylinder head gasket.We use specialized equipment (as illustrated) to guarantee that all of our surface finishes meet the gasket manufacturers specifications.