Cylinder Head: Description

The cylinder heads that are used in a Compressed Natural Gas (CNG) vehicle are designed using a high temperature valve and valve seat. Both the intake and the exhaust valves are salt bath nitrated - a surface treatment applied for better wear characteristics in the CNG environment. The use of a CNG fuel creates a hotter combustion chamber which can cause the standard valves and valve seats to prematurely wear. The 5.7 aluminum cylinder head features a valve seat inserts that are a harder powdered metal with advance wear characteristics than current 5.7L gasoline package.