Rocker shims = NO rocker shaft oiling

Syleng1 said

Wow! Lots of typing there ^^^
So I’ve tried preloading a hydraulic lifter to the bottom plunger depth like said above and ended up after a few pulls with a lifter tick. I Pulled the intake and found the retainer clips fell out of the lifters. In pieces but all were in bottom of pan.

I was told by the machine shop not to do that with certain lifters - comp cams for one - as they need the pressure of start up to expel air while pumping up and if too much slop- the clips fall out. These were wire type clips and not c clips. Has technology changed or did I mis read the above info?

Click to expand...

If You had set the preload with the plunger almost bottomed, there'd be little play, & the cup wouldn't even touch the clips, ever. It may take a bit longer to pump up with limited travel, but other than the vibration frequency from the "tick", there's nothing to cause the clips to fall out....I figure that to be the case. If You set the preload really shallow as I do, the cups are all going up & down almost full travel 'til they pump up, that makes a lot more noise/vibration. I have yet to have that happen with any so far, Comp, Mopar, Crane, Lunati, Engle, knock on wood I guess. Internal snap ring is superior to the wires, consider that plenty of solid cams that tick & clack away have clips holding the pushrod seats in just the same.