Crane Gold adjustable rocker preload help please?

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you primed the engine's oil pump, right ?

do it while someone turns the crankshaft slowly. the lifters will be filled.

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I was the one turning it slowly.........
I used a dial indicator to find exact TDC and could
lightly spin the pushrods. They were the same of all
cylinders. I drive it last night and turned the crank by hand today as I was finding tdc for all cylinders. Would that be close enough?

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Quick question on preload for Crane rockers. My cam
(edelbrock) says to adjust rocker arms as follows:

When no 1 cylinder exhaust valve starts to move up,
adjust intake rocker arm to zero clearance between rocker and valve tip. Turn adjusting screw down 1/4 turn more for final adjustment.

They are hydraulic rockers. This seems a little vague and error prone dont you think? So is there a better way, and should the pushrods be snug to tight at TDC or should they both be loose?

Someone with real experience please?

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nahh at, +90 +90 on a hydraulic lifter adjustment, is fine. check them after a heat cycle anyways. the oil psi is #60lbs -/+, the pushrod will sink and the valve will close, because the spring pressure will overcome it.

the oil pressure keeps them even. adjustments keep them even.

on a cold HP hyd. cammed engine with lifters that have bled down, on start up it will "lifter clack" until psi builds in the lifter. that is normal after 1/2 " of high performance valve lift.

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So the question is does it sound like my preload is set ok then?

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nahh at, +90 +90 on a hydraulic lifter adjustment, is fine. check them after a heat cycle anyways. the oil psi is #60lbs -/+, the pushrod will sink and the valve will close, because the spring pressure will overcome it.

the oil pressure keeps them even. adjustments keep them even.

on a cold HP hyd. cammed engine with lifters that have bled down, on start up it will "lifter clack" until psi builds in the lifter. that is normal after 1/2 " of high performance valve lift.

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mark, this is the nasty edelbrock cam you were helping with in my hesitation an low rpm post. Lots of overlap on this one. Still pulls 120 cranking pressure if that helps

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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.

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