Brand new RAT cylinder heads 7424 1100 Euro Technical specifications for the RAT 7424 cylinder heads: Head casting type- NEW 1.8/ 2.0L Bus castings Combustion chamber shape- 1.8/ 2.0L bus, non modified Combustion chamber volume- 50cc+/- for 2.0 castings, 55cc +/- for 1.8 castings Spark plug location- original 1.7/ 1.8/ 2.0 location, plugs are NOT relocated as with some of our "Leading edge" offerings. Valve sizes- 42mm Intake/ 36mm Exhaust Port work- Bowl cuts and port clean up procedures completed Valve type- Stainless Steel Valve Springs- RAT single heavy duty. Will control valves to 6,250 RPM +/- dependant upon camshaft and valve train mass. Retainers- Chromoly steel Intake manifold pattern- original 4 stud pattern.
