Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. Roundwire locks and pressure balance grooves are included with every set at no additional charge. Other features include forced pin oiling, pressure balance groove, and precision pin fitting. Premium Chrome Moly wrist pins are included with the Standard Series.
HIGH PERFORMANCE PISTON RING SETS
Manley rings provide minimal blow-by and increased horsepower while maintaining cooler, cleaner oil resulting in loner engine life. Top Ring: High performance ductile iron with plasma moly in-lay or premium steel with Chrome Nitride face coating. Second Ring: Reverse twist cast iron. Oil Ring: Three piece, standard tension, full oil return. All Premium Steel ring sets utilize a Napier style second ring.
Chrysler 6.1L Hemi, Stroke 4.050", Rod Length 6.125", Dish -11.5cc, Set of 8.
2.300” x .150” wall Premium Chrome Moly pin (Standard Series) included
598660C-8 utilizes a 4.060" bore
598665C-8 utilizes a 4.065" bore
598680C-8 utilizes a 4.080" bore
Compression Ratio of 6.1L 74cc Head: 9.0:1
*Compression ratios for the 6.1L are calculated at .003" deck clearance and
a 4.100" head gasket ID with a .040" compressed thickness.
