HYDRAULIC LIFTER (OEM STYLE)
STANDARD HYDRAULIC LIFTER W/ WIRE CLIP RTNR & STNDRD FASTER BLEED RATE
Note: This lifter is an oil metering type. It can be used in engines that oil through the pushrods.
These are designed to be OEM replacement 5001 lifters (made in the USA by Hy-Lift Johnson) and some can be noisy when used with a performance camshaft, but they cost less.
Any tappet adjusted to .000" preload will operate as an "anti-pump up" lifter. However, when using a lifter with a small wire retaining ring such as OEM lifter (shown as #5001), there is a higher probability of the retainer ring failing with this amount of pre-load. Anytime maximum RPM is necessary and a minimum tappet preload or lash is used, racing lifters with heavy duty retaining rings (#5003) are strongly suggested.
Plunger travel in this lifter is 0.208 +/- 0.02
Do not use oil heavier than 10W30.
If you are converting an OEM roller lifter engine 1987-1991 to a conventional flat tappet camshaft use P/N 5001 or 5003, along with the proper length pushrods. Do not fill or pump up hydraulic lifters before assembly. They may hold the valves open causing difficult starting and/or engine damage.