Originally Posted by stubbie
Steve from the few replies that I've had on the other forum it seems you may be crushing the lifter as you go past the 1/2 turn or crud in the lifter. You will need to pull some lifters apart to see what is going on exactly. If you pull some apart can you post some pics thanks.
I can see how bottoming out the plunger and running the engine would crush the internal components, because this would cause dynamic loads over thousands of cycles.
What I don't see is how I could crush the lifter during adjustment by working the plunger through its full movement one, two or three times to make sure that I'm at the top of it's travel for zero lash. Also, setting the intake valve correctly on cylinder 1 for example, followed by hand rotation of the crank and adjustment of the remaining valves, will cause the intake valve on cylinder 1 to cycle through its full movement at least twice, exerting full valve spring pressure on the lifter, hence bottoming it out with about 300# of force. If this does "crush the lifter", then how is it possible to adjust the remaining valves? Also, how do the lifters not "get crushed" when the engine sits for any length of time, with partial or full valve spring pressure on about 1/4 of the lifters? Someone please clue me in.
I note that out of the 13 of 16 lifters that have collapsed completely (or nearly so), the #1 intake and exhaust are the LEAST collapsed, having retained 3/4 turn of plunger travel.