Psi Beehive Valve Spring, Od 1.290, 380lb Psi Ls1511ml on 2040-parts.com
Asheboro, North Carolina, United States
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This series has all the benefits of the 1200's plus an additional nitriding operation. The nitriding process, which is also done in-house, increases the strength at the surface of the wire and at the same time causes a slight softening of the core material. This trade-off in hardness results in a gain in endurance for the Circle Track and Road Circuit teams who are limited by the on-set of fatigue at the wire surface. Since Drag racers are not limited by endurance, the loss of core hardness does not make nitriding suitable for their applications.
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