Piston Ring: Description and Operation

DESCRIPTION





The piston rings include a moly-filled top ring with a symmetrical barrel face. The intermediate piston ring (2 and 3) is of the Micro-Napier design. The Micro-Napier design has a reduced "hook" on the running face, removes the need for chroming and improves oil economy. The oil control package consists of two steel rails and an expander spacer.