Abstract: A system and method for reducing or eliminating the flexing of an engine rocker shaft at high RPM conditions. In one aspect of the invention, an elongated block stud is utilized in conjunction with a rocker shaft pillar mount to more securely hold the rocker shaft in position by having all forces transmitted to a block stud which is secured to the engine block. In a second aspect of the invention, a two-piece rocker shaft center support is utilized with the lowermost piece being secured to the cylinder head by a block stud threaded into the engine block. The rocker shaft thus is secured in position along its full length between each rocker arm no matter what cylinder head configuration is encountered.

Abstract: An internal combustion engine comprising an engine block including a plurality of parallel, spaced apart cylinder modules, each module having a cylinder bore and a pair of pistons in each bore which are simultaneously movable in opposite directions and a rotatable shaft parallel to the cylinder modules. A wobbler member connected to and rotatable with the shaft means, has a pair of end portions connected by a central portion, each end portion having a centerline forming an angle with the rotatable shaft and wobbler end portion. A pair of bearing members are provided within each spider assembly and located at opposite ends of each wobbler end portion, each having a general frustro-conical annular shape with relieved areas in its outer surface to provide reduced bearing contact areas and bearing friction.