2-3 turns doesn't bottom any lifter I have come across. A brand new Comp hydro roller takes over 5.
the seat or cup will not stay stationary, the effective height changes all the time. The more pre-load you run the lower the rpm you'll float (lifter pump up} the engine. The more pre-load you run effects the vacuum at idle, and quality of the idle. I'm not talking about enough pre-load to collapse the lifter either. The less pre-load the higher the rpm potential. A half turn ether way setting valves always has a noticeable effect on the engine. Let alone 2 or 3
I edited these statements. Maybe I have something to learn. But I see no concrete basis for the statements listed above.
Doug
