Friday, October 25, 2013
How to Adjust Rhoads Lifters
Proper adjustment of Rhoads lifters, or any hydraulic lifters, is crucial to engine performance. If the rocker arms are not tight enough, tappet noises or bent push rods may result. If the rocker arms are too tight, the lifter may bottom out or the valve may not completely close, causing either poor engine performance or internal engine damage. While all that seems scary and adjusting Rhoads lifters is a time-consuming proposition, the procedure is relatively simple.
Instructions
- 1
Bring the piston in the No. 1 cylinder to TDC on the compression stroke. TDC, or top dead center is when the piston reaches the top of its travel and both the intake and exhaust valves are closed. Both the intake and exhaust lifters will be sitting on the low sides of their respective cam lobes when the piston is in TDC.
2Tighten the rocker arms on that cylinder using any tools necessary from a toolkit until the push rods starts compressing each lifters plunger. Continue tightening the rocker arms until the push rods compress the plungers cylinder 1/16 inch below the retaining ring. This normally takes three-quarters of a turn on the nut.
3Repeat for all other cylinders.
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