Low mass roller valve lifter assembly

摘要

An assembly of a low mass roller valve lifter having a body diameter smaller than the diametral extent of the associated roller and a sleeve sized to receive protruding portions of the roller. The sleeve has a transverse slot that guides flatted ends of the roller shaft to restrain rotation of the lifter body and of the roller shaft. Various sleeve retainers are disclosed and oil supply means are provided suitable for new or reworked engines.