Abstract: Apparatus for reworking the valve guides of a cylinder head is disclosed. The apparatus includes an adjustable cylinder head holder including a base, a pedestal and a head support subassembly permitting positioning of the head rotationally about its longitudinal axis as well as pivotally about a transverse axis. A pair of such cylinder head supports are supported on an elongated member for transverse adjustable movement. The elongated member is supported on a bed plate beneath the spindle of a drill press. Valve guide reworking tools secured to the spindle by a U-joint are aligned with and guided through the valve guides by a valve guide boring fixture securable to the cylinder head.

Abstract: Apparatus for reworking the valve guides of a cylinder head is disclosed. The apparatus includes an adjustable cylinder head holder including a base, a pedestal and a heat support subassembly permitting positioning of the head rotationally about its longitudinal axis as well as pivotally about a transverse axis. A pair of such cylinder head supports are supported on an elongated member for transverse adjustable movement. The elongated member is supported on a bed plate beneath the spindle of a drill press. Valve guide reworking tools secured to the spindle by a U-joint are aligned with and guided through the valve guides by a valve guide boring fixture securable to the cylinder head.