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These High Energy hydraulic lifters from COMP Cams feature a patented, constant orifice-metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and the precisely coined bottom surface of the pushrod seat is maintained throughout the engine's rpm range, eliminating excessive oiling at high speeds. The pushrod seat is made of a special powdered metal iron alloy, heat-treated for strength and wear resistance. The longer piston is produced with through-hardened steel that provides more bearing surface and increased lifter longevity. These lifters have a lightweight check valve disk that allows for quicker response, resulting in increased engine speed before valve float.
 

• Patented orifice metering valve precisely meters oil to the rocker arms
• Continuous contact between metering valve and pushrod seat is maintained, eliminating excessive oiling at high end speeds
• Pushrod seat is made of a special powered metal iron alloy that is heat treated for strength and wear resistances
• Contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity
• Lightweight check valve disc allows for quicker response, which results in increases in engine speed before valve float
• Lightweight check valve disc maintains added control at all engine speeds and loads