Cylinder head arrangement for internal combustion engine

A cylinder head arrangement for an overhead cam shaft internal combustion engine, said cylinder head having a planar lower surface for sealing relation around a cylinder bore of an associated cylinder block, a recess formed in said lower surface in confronting relation to the associated cylinder bore for forming a combustion chamber, said cylinder head having a peripheral wall on an upper side thereof opposite said planar lower surface and adapted to be engaged by a cam cover to form a closure around said peripheral wall containing a valve actuating mechanism, a pair of valve seats formed in said recess at the termination of respective flow passages extending through said cylinder head, a pair of poppet valves each having stem portions slidably supported along respective axes by said cylinder head and having head portions for controlling the flow through respect of said valve seats, said poppet valve axes being disposed in nonparallel relationship, each of said stem portions extending through a respective one of a pair of machined spring engaging surfaces in said cylinder head located below and surrounded by said peripheral wall, said machined spring engaging surfaces each being perpendicular to the respective stem portion and being spaced from said planar lower surface and lying at an angle thereto, and a cam shaft bearing member having a mounting surface affixed to a cylinder head mounting surface that is disposed at an angle to said cylinder head lower surface, which angle is equal to the angle of one of the two machined spring engaging cylinder head surfaces to said cylinder head lower surface, said cam shaft bearing member journaling cam shaft means for operating said valves, a pair of coil compression springs, each encircling a respective one of said valve stems and engaged at one end thereof with a respective one of said machined spring engaging surfaces of said cylinder head, keeper retainer assemblies affixed to the ends of said valve stems and engaged by the other ends of the respective of said coil compression springs, said chin shaft bearing member having a pair of bores formed therein, each encircling a respective one of said coil compression springs.