1963 Avanti 289 engine
Posted 04 November 2007 - 01:17 AM
Posted 16 November 2007 - 05:32 PM
Here is a page of suggestions. Different people have different methods of adjusting valves, and apparently these guys have been doing it their way for years.
You will find some good advice here.
If you get the adjustment right the valves should be as quiet as a hydraulic lifter engine or quieter - no valve noise at all.
Any valve noise indicates worn parts. Unfortunately this is common on solid lifter engines. If they are kept adjusted they are dead silent and stay that way for the life of the engine. If they are allowed to get out of adjustment the rocker arms get pounded and worn and they can't be adjusted properly.
A little noise is normal under the circumstances but if they are real noisy you need to replace the rocker arms. Inspect the tips where they ride on the valve stem, they should have a smooth curve. If they are rutted and pounded to oblivion there is your problem.
Auto machine shops used to be able to regrind the rocker arms but I doubt anyone has the proper equipment today. The only solution is to replace them.
Posted 16 November 2007 - 05:39 PM
Excess valve wear may already have occurred. Do a compression test to see.
If you need a valve job do it and put new rocker arms on at the same time and new rocker arm shafts if necessary.
After that your valves will be dead quiet.
Or if the valves are still OK and you don't want to change the rocker arms, at least check the valve clearances often. You have no margin for error.
One good long trip could burn the valves out.
Posted 17 November 2007 - 12:47 AM
Posted 18 November 2007 - 01:15 PM
Unfortunately this is seldom the case so a little valve noise is something you have to accept unless you want to do the repair job.
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