Piston Ring Set

When reconditioning engines, Piston Ring sets are an important component. For intermediate reconditioning of engines with liners we recommend to check further usability of the pistons and to replace the piston rings and cylinder liners. This ensures run-in of the piston rings with the sliding surface of the cylinder liner. In general, a distinction is made between compression rings, scraper rings and oil control rings. They all have the primary task to seal off combustion chamber and crankcase against each other. The compression rings are to prevent combustion gases from getting into the crankcase from the combustion chamber. Scraper rings combine the function of the compression rings and the oil control rings; so in essence they keep combustion gases away from the crankcase and wipe off excess oil on the cylinder wall.