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ROCKER ARM HITTING VALVE COVER

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alan bane

04-27-2007 07:57:58

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Just had a head gasket put on and had the head shaved and now I have a Rocker arm hitting the valve cover. What to do?

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shrk

04-27-2007 10:13:09

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Re: ROCKER ARM HITTING VALVE COVER in reply to alan bane, 04-27-2007 07:57:58

Like he said before the push rod isn't seated right, and as far as shaving the head you can do that,thats why theirs adjustable tappets on the rocker arm.

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Rick in Michigan

04-27-2007 09:53:10

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Re: ROCKER ARM HITTING VALVE COVER in reply to alan bane, 04-27-2007 07:57:58

My guess - if it's only one hitting, you don't have the pushrod seated in the lifter - it's up on the edege of the lifter causing the rocker arm to raise up higher on each rotation of the cam.

Probably wrong - usually am.

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supergrumpy

04-27-2007 08:27:43

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Re: ROCKER ARM HITTING VALVE COVER in reply to alan bane, 04-27-2007 07:57:58

can you grind down the pushrods??

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alan bane

04-27-2007 09:00:05

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Re: ROCKER ARM HITTING VALVE COVER in reply to supergrumpy, 04-27-2007 08:27:43

Yes ,some, maybe 1/16 of an inch. I only have one hitting.

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RAB

04-27-2007 08:05:59

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Re: ROCKER ARM HITTING VALVE COVER in reply to alan bane, 04-27-2007 07:57:58

Shaved to increase the compression? How much? If you do that your valve gear geometry is all messed up - push rods not at right angle, rockers bearing at wrong angle etc.

You need to fit appropriate spacers below the rocker arm pedestals to return the angles to design.
RAB

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alan bane

04-27-2007 08:16:42

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Re: ROCKER ARM HITTING VALVE COVER in reply to RAB, 04-27-2007 08:05:59

Blew a head gasket and had a warped head.

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msb

04-27-2007 08:02:56

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Re: ROCKER ARM HITTING VALVE COVER in reply to alan bane, 04-27-2007 07:57:58

What engine? Hydraulic lifters? What?

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