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Manley 10° Steel Valve Locks 11/32" Valve Stem (.3415" )
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660-13198-16
Specifications:
10° Design Eliminates Retainer Extrusion Problems
Engineered to work with Manley 10° Retainers, these heat-treated 10° valve locks use the best steel alloy, are thicker than competitor locks, and have black oxide coating. A favorite among drag racing engine builders, Manley 10° Steel Valve Locks are strong, reliable & durable. Manley supports both conventional and Bead Loc groove systems with an extensive lineup of premium valve locks.
The groove in a valve stem is imperative to proper valve performance. Inferior grooves, unsuitable retainers, or mismatched locks can cause catastrophic failure. Though conventional (or square) grooves are very popular, their success depends on precise machining. The groove's surface must be impeccable (i.e., no residual machining marks), and the groove requires an exact .013" radius in the upper corner (too large a radius increases the chance of groove abrasion; too small a radius exposes the groove to sharp fillets). Even perfect conventional grooves, however, are subject to the abuse of substandard components. Enter Bead Loc... Intended to be simple and forgiving, the Bead Loc groove has a .110" full radius, and radius contact points are not at the groove's root. This minimizes vertical movement, especially in the presence of a valve float, to lessen valve erosion for longer service life.
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WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
