Abstract: An improved pin for supporting a roller cam follower for use in an internal combustion engine block used in a high speed motor vehicle having open-ended cylindrical bores in which valve lifters reciprocate, a cam shaft with cams that reciprocate the lifters, and an engine block oil passage communicating between adjacent cylindrical bores intermediate the ends of the bores. The improved pin is cylindrical in shape and secured against rotation in two pin-receiving bores. The roller cam follower is rotatably supported on the pin. A primary oil passage for communicating with the engine block oil passage to facilitate the flow of oil between the bores is provided. The primary oil passage is displaced longitudinally from the pin and roller cam follower. A lubrication oil passage is located within the pin and has an inlet opening facing predominantly toward the primary oil passage and which is located in a portion of the pin that is in one of the pin-receiving bores of the body.

Abstract: An improved pin for supporting a roller cam follower for use in an internal combustion engine block used in a high speed motor vehicle having open-ended cylindrical bores in which valve lifters reciprocate, a cam shaft with cams that reciprocate the lifters, and an engine block oil passage communicating between adjacent cylindrical bores intermediate the ends of the bores. The improved pin is cylindrical in shape and secured against rotation in two pin-receiving bores. The roller cam follower is rotatably supported on the pin. A primary oil passage for communicating with the engine block oil passage to facilitate the flow of oil between the bores is provided. The primary oil passage is displaced longitudinally from the pin and roller cam follower. A lubrication oil passage is located within the pin and has an inlet opening facing predominantly toward the primary oil passage and which is located in a portion of the pin that is on one of the pin-receiving bores of the body.

Abstract: A roller valve lifter and member for preventing rotation of the lifter in its bore, especially useful for high speed automotive internal combustion engines. The lifter has a flat or non-cylindrical portion along its length. A non-movable member has an elongated portion received within the bore that cooperates with the non-cylindrical portion to prevent rotation. The non-movable member is located along one side in the bore, out of alignment with a transverse oil passage that communicates with plural lifter bores in series.