Quote:

If you've run the engine and after sitting all night you can "SPIN" the pushrods at TDC on each valve, you have no preload. Here's how to develop the feel you need to do this right. Bring #1 intake up to TDC and back off the adjustment until you can shake the pushrod up and down. Then, while still moving the pushrod, slowly turn the adjuster until the pushrod "JUST" won't move up and down,then turn the pushrod. This point is zero lash. While you continue to try and turn the pushrod turn the adjuster whatever additional the cam grinder says is appropriate. After doing this a few times you will develop the feel and the proper technique.



Is this with engine cold or hot? Expansion, lifter pump up etc changes from cold to hot engine.