Automotive Piston Rings 1967 State of the Art 670019

This paper reviews the state-of-the-art with respect to compression and oil control ring designs used in 1967 model engines. Specific precautions with regard to details in piston ring specifications for optimum oil control and blowby performance are discussed.For 1967 engines, barrel face piston rings, molybdenum piston ring facings, and smoother cylinder bores are being used for improved oil economy and wear performance.New developments in piston ring coatings and materials are reviewed.


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