Abstract: A fixture for holding a workpiece includes clamps configured to engage tie rods secured to the workpiece, locating pins configured to engage a corresponding pin secured to the workpiece, pads, and actuators configured to move clamps for alternately drawing the workpiece into contact with the pads and disengaging the tie rod from the clamp such that the fixture assembly can release the workpiece.

Abstract: A method of detecting a gap extending along a longitudinal axis and defined between a shoulder of a seat formed around a port in a cylinder head and an inboard axial end of a valve seat insert disposed in the seat includes disposing a distance sensor within the port, and moving one of the distance sensor and the cylinder head relative to the other of the distance sensor and the cylinder head along the longitudinal axis to generate relative movement between the distance sensor and the cylinder head. A radial distance is sensed perpendicular to the longitudinal axis during the relative movement between the distance sensor and the cylinder head to detect a change in the radial distance at an interface between the inboard axial end of the valve seat insert and the shoulder of the seat, thereby indicating an undesirable gap therebetween.

Abstract: A fixture for holding a workpiece includes clamps cofigured to engage tie rods secured to the workpiece, locating pins configured to engage a corresponding pin secured to the workpiece, pads, and actuators configured to move clamps for alternately drawing the workpiece into contact with the pads and disengaging the tie rod from the clamp such that the fixture assembly can release the workpiece.

Abstract: A method of forming a cylinder head may include machining an upper surface of a cam tower of the cylinder head to form a generally planar surface. An oil passage may be drilled in the upper surface to provide an oil feed. A bearing bore may be formed in the upper surface of the cam tower. The bearing bore may include a recess having first and second circumferential ends. The oil passage may intersect the first circumferential end.

Abstract: A method of forming a cylinder head may include machining an upper surface of a cam tower of the cylinder head to form a generally planar surface. An oil passage may be drilled in the upper surface to provide an oil feed. A bearing bore may be formed in the upper surface of the cam tower. The bearing bore may include a recess having first and second circumferential ends. The oil passage may intersect the first circumferential end.