Are you SURE on the lifter pre-load? What kind of rockers? How many turns past 0 lash? If you're 1 full turn past 0 lash thats .042 pre load assuming a standard 24 thread per inch adjuster. That could be too much for your setup. I'd try 1/2 turn (.020)

Last edited by GTX MATT; 12/08/17 02:41 PM.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street