What's New In Piston Rings

Marian goes undercover to find out the latest technology and progressive thought when it comes to piston ringsWhen I first started working for HOT ROD magazine more than 30 years ago, nearly all American domestic production cars used a thick, 5/64-5/64-3/16-inch piston-ring package. The top, usually plain-iron, ring may or may not have been moly-filled. The oil ring was invariably a standard-tension configuration. Full-on race cars used thin, 1/16-1/16-?-inch piston rings. If available, they may have opted for a ductile-iron moly or chrome top ring with a low-tension oil ring. Just about everyone used a plain-iron second ring, although a few companies were pushing a moly second ring as well. The big debate was whether a daily street driver dared install 1/16 compression rings and low-tension oil rings.


Photo Gallery: Piston Ring Tech - The Latest Developments In Cylinder Sealing - Hot Rod Magazine

Photo Gallery: Piston Ring Tech - The Latest Developments In Cylinder Sealing - Hot Rod Magazine


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