Once the cylinder head casting has checked out good, we will need to resurface all of the valves.  This will change the valve stem height up into the cylinder head, requiring adjustment on mechanically adjusted heads.  This service creates a brand new concentric metal to metal seal with the valve seat. This is included on all standard cylinder head rebuilds.  We can reface steel, stainless steel, inconel, and titanium valves, with our different grinding stones.