changing rocker nuts - Team Camaro Tech
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post #1 of 4 (permalink) Old May 2nd, 15, 05:43 PM Thread Starter
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Jeff
 
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changing rocker nuts

A couple of the rocker nuts on my 396 seem to be backing off and producing a ticking at idle. I have a new set of rocker nuts on the way and was wondering if there are any 'tricks of th trade' in changing them.

Do you just count the number of turns to remove the old ones and then tighten down the new ones the same amount?

Do you change them one at a time and adjust each one with it running, then shut off the car and do the next one.

What I want to avoid is having more then one rocker clacking at a time.

Thanks
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post #2 of 4 (permalink) Old May 2nd, 15, 05:50 PM
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Garth
 
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Re: changing rocker nuts

Do them all at the same time. No tricks, just regular valve lash setting. Turn the engine over by hand or by bumping the starter (coil disconnected). I do the Exhaust opening Intake closing method for solid or hydraulic.

If they are hydraulic just do a search for 'adjust hydraulic lifters' and read how to do the preload.

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post #3 of 4 (permalink) Old May 2nd, 15, 06:08 PM
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Tom
 
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Re: changing rocker nuts

Lay a straightedge across the tops of the rocker studs to prove they are not pulling up. (Won't be a problem if you have screw in studs.)

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post #4 of 4 (permalink) Old May 2nd, 15, 06:46 PM Thread Starter
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Jeff
 
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Re: changing rocker nuts

The ticking was coming from the drivers side so we were adjusting the valves with the engine running, 3 of the 8 nuts didn't seem to lock, they could be turned easily after being adjusted. The 3 nuts could be turned with one finger on the wrench, they also looked to have fewer threads visible above the nut before being adjusted.
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