When you “pre-load” the lifter cold, some of the lifters may not be pumped up and will feel the plunger spring before you get any real resistance. I spin the push rod until it takes out any play and I feel a slight resistance, then turn it down the specified amount. I prefer 3/4’s of a turn but others have their preferences.
Edit: You need to just feel the plunger spring without compressing it, and that will be your zero lash starting point. Thanks Pre ‘68 Dave for pointing out my unclear instruction.
Last edited by Phak1; 02/21/2021 2:08 PM.
