Engine with die cast static parts

An internal combustion engine comprising a crankcase casting, a plurality of cylinders on said crankcase casting, a plurality of cylinder head castings, one for each cylinder, mounted on and closing the upper end of each cylinder, said cylinder head castings each having a generally flat flanged surface thereon, the flanged surfaces of all of the cylinder head castings lying in substantially the same horizontal plane, each cylinder head casting having a top wall and an integral generally vertical tubular extension thereon defining an air intake passageway for the cylinder, the upper end of each tubular extension being of annular shape and defining said flat flanged surface, each cylinder head casting also having an integral generally vertically disposed valve stem guide thereon, each valve stem guide being surrounded by said flat flanged surface, a casting defining a valve train casing, said casing having a bottom wall closing the lower end thereof, said bottom wall having a plurality of openings therein spaced apart to correspond and register with the spacing of said valve stem guides and the upper ends of said intake passageway extensions on the cylinder head castings, each of said openings being surrounded by a flat surface on the bottom face of said bottom wall, said valve train casing being seated on said cylinder head castings with a gasket interposed between said flat surfaces thereof, means forming a cover for the upper end of the valve train casing and fastening means securing said valve train casing in a seated position on the upper ends of said cylinder head castings.