Direct Shot Roller Lifters Hylift Johnson for Chevy BBC 454 Marine 502 GM

Description: Direct Shot Roller Lifters Hylift Johnson for Chevy BBC 454 Marine 502 GM Direct Shot Lifters set for GM Big Block 454/7.4L & 502/8.2L Engines. Perfect for your marine engine! HyLift-Johnson's "Direct-Shot?" oiling system sends oil directly to the axle and roller needle bearings providing protection at the higher RPM's. These lifters are made in the United States from superior forgings with a black oxide finish and a "C" clip retainer. With a reduced clearance between the lifter body and the precision ground internal piston, a slow leak down is allowed with very little loss of valve lift or duration at any RPM. These lifters will leak down between 90 to 120 seconds, whereas OEM lifters leak down between 10 to 120 seconds. This smaller leak down range helps create balance between all cylinders. Additionally, the tighter internal clearances cause the lifter to act as a heavy duty shock absorber holding up to higher spring pressure and higher lift camshafts. HyLift Johnson is a division of Top Line Automotive based in Muskegon, MI USA. They are known in the industry as the manufacturer of the highest quality lifters for the widest range of OEM and aftermarket applications. They do all of the design, Engineering, Manufacturing, Assembly and Testing in-house. "Hy-Lift Johnson introduces Direct Shot Bearing Oil injection system as an option to all of our roller Lifters, Identified by an ?E? after the part number like A-2148E. Our system utilizes a proprietary oil band system that prevents debris from clogging up the oil supply hole. Our Oil Supply hole is located down from the Engine oil supply gallery where debris travels. This prevents pieces of debris from clogging up the 0.012? diameter oil supply hole. Other designs supply oil from the oil band area which is exposed to debris that might be in the oil system. Once the oil hole is clogged the benefits of this type of system are rendered useless. We also provide holes to each end of the bearing for extra reliability. Extreme engine testing has shown that our system has improved durability by as much as 300%." "?S? or Slow Design: These parts have an ?S? designation after their part number. So a Slow Design part number will look like A-0817S. These Lifters have a Leak Down on the upper end of the scale from 90 to 120 seconds. In a performance application these lifter will actually act like a mechanical lifter with very little effective loss of valve lift or duration at any RPM. These have a much smaller Leak Down range that will also balance all of the cylinders to each other. These lifters are very hard to produce because the TOTAL clearance between the I.D. of the Body and the Piston assembly is reduced to less than 0.000120?, or 1/30 of a human hair. These are like super heavy duty shocks and can handle higher spring pressures without collapsing like the standard lifters. The only draw back of this type of lifter is that if the valve train should ?Float? because of reaching a higher RPM than the valve springs can handle these lifters will try to take up the excessive clearance causing the valve to hang open resulting in a loss of power. Because these are Hydraulic lifters there is no lash or additional adjustment needed and the full cam profile is translated to the valves. In testing, not only did these lifters result in more power and higher RPM reading over other Hydraulic lifters they also reduced valve train wear and failure compared to mechanical lifters." These lifters are purchased in bulk from HyLift Johnson and repackaged in sets of (16). Brand: EPWI Non-Domestic Product: No Type: Hydraulic Roller Interchange Part Number: 2279 Custom Bundle: No Fitment Type: Performance/Custom Manufacturer Part Number: HA-2279SE HA2279Se UPC: 885334060926 Vintage Part: No Finish: Black Oxide Finish Modified Item: No Performance Part: No Shipping Items are shipped within 24 hours of purchase Monday-Friday.Payments We accept all major credit cards Returns Returns can be opened via ebay within 30 days of purchase date. 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Price: 612.98 USD

Location: Bossier City, Louisiana

End Time: 2023-12-17T16:38:24.000Z

Shipping Cost: 0 USD