Abstract: A pushrod assembly for an engine is disclosed. The pushrod assembly may include a first piece configured to house a hydraulic lash adjuster and a second piece coupled to the first piece. The first piece may include a mating portion with a tapered end section. The second piece may include a first bore adapted to receive the mating portion of the first piece.

Abstract: A roller lifter for an internal combustion engine includes a cylindrical lifter body having a first end, a second end and a roller rotatably attached to the first end. The first end has a first diameter and the second end has a second diameter greater than the first diameter and a flat surface configured to engage a corresponding flat surface on an adjacent roller lifter and to prevent axial rotation of the roller lifter while in use. The roller lifter may further include a recess extending along a longitudinal axis from the second end toward the first end.

Abstract: A hydraulic lash adjuster includes a body defining an axial bore and having an open end and a closed end. A hollow piston is telescopically received within the axial bore and defines a fluid reservoir. The hollow piston has a first end disposed within the axial bore and a second end extending outwardly beyond the open end of the body. A high pressure volume is defined by the axial bore and the first end of the hollow piston. The hydraulic lash adjuster also includes a valve mechanism positioned through an opening of the hollow piston and including a valve member having an open position defining a fluid path from the fluid reservoir to the high pressure volume. The valve member also has a closed position in which the fluid reservoir is fluidly blocked from the high pressure volume at the opening. The hollow piston includes a band of radial recirculation openings defining recirculation paths from the high pressure volume to the fluid reservoir along an exterior of the hollow piston.

Abstract: A hydraulic lash adjuster includes a body defining an axial bore and having an open end and a closed end. A hollow piston is telescopically received within the axial bore and defines a fluid reservoir. The hollow piston has a first end disposed within the axial bore and a second end extending outwardly beyond the open end of the body. A high pressure volume is defined by the axial bore and the first end of the hollow piston. The hydraulic lash adjuster also includes a valve mechanism positioned through an opening of the hollow piston and including a valve member having an open position defining a fluid path from the fluid reservoir to the high pressure volume. The valve member also has a closed position in which the fluid reservoir is fluidly blocked from the high pressure volume at the opening. The hollow piston includes a band of radial recirculation openings defining recirculation paths from the high pressure volume to the fluid reservoir along an exterior of the hollow piston.

Abstract: A roller lifter for an internal combustion engine includes a cylindrical lifter body having a first end, a second end and a roller rotatably attached to the first end. The first end has a first diameter and the second end has a second diameter greater than the first diameter and a flat surface configured to engage a corresponding flat surface on an adjacent roller lifter and to prevent axial rotation of the roller lifter while in use. The roller lifter may further include a recess extending along a longitudinal axis from the second end toward the first end.

Abstract: A method of forming gray iron components includes applying a substantially uniform magnetic field to gray iron. The method also includes heat-treating the gray iron while the gray iron is within the magnetic field.

Abstract: A method for coating a substrate is disclosed. The method includes applying a coating to a surface of the substrate and heating the applied coating and the substrate to a temperature less then approximately 600° C. to create a tempered zone within the substrate. The method further includes cooling the applied coating and the substrate.

Abstract: A method of forming gray iron components includes applying a substantially uniform magnetic field to gray iron. The method also includes heat-treating the gray iron while the gray iron is within the magnetic field.

Abstract: A method for coating a substrate is disclosed. The method includes applying a coating to a surface of the substrate and heating the applied coating and a first portion of the substrate. The first portion includes the surface of the substrate and less than the entire substrate. The method further includes cooling the applied coating and the first portion.