weird rocker adjustment

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schult.cindy@gmail.com - 28 Jul 2008 00:36 GMT

Anybody out there ever seen this in a 454?
After adjusting rockers to 0 lash + 1/2 turn, I turn the motor over,
not starting, and low and behold I can turn the push rod again, and if
I start it, the rockers still clatter. I am running Crane roller
rockers, new pushrods, new hydrolic lifters, and a new Crane cam. Oil
pressure is roughly 42 lbs at idle and 190 degrees.

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Steve W. - 28 Jul 2008 01:32 GMT

> Anybody out there ever seen this in a 454?
> After adjusting rockers to 0 lash + 1/2 turn, I turn the motor over,
> not starting, and low and behold I can turn the push rod again, and if
> I start it, the rockers still clatter. I am running Crane roller
> rockers, new pushrods, new hydrolic lifters, and a new Crane cam. Oil
> pressure is roughly 42 lbs at idle and 190 degrees.

Lifter getting oil? Almost sounds like they are not full of oil.

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Steve W.
Near Cooperstown, New York

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schult.cindy@gmail.com - 28 Jul 2008 02:13 GMT

> schult.ci...@gmail.com wrote:
> > Anybody out there ever seen this in a 454?
[quoted text clipped - 9 lines]
> Steve W.
> Near Cooperstown, New York

Not certain. I've been thinking the same. Do you know if it is
possible to have an airlock in the channel. I've heard stories of
people drilling a small hole in the plug in the front of the engine to
bleed off air. Have you ever heard of this? If so, what size hole?

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Shep - 28 Jul 2008 03:23 GMT

This can happen with extremely strong valve springs or when doing the
adjustment, static I assume? ,maybe you were not on the heel of the cam.
Make the adjustments engine running, see what happens.

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