Steve talks about noises and sez:
<snip>
He had head shaved recently, but doesn't know how much;
I think this could be a big hint...If the head is shaved and the push rod
length not adjusted accordingly, there will be at best a little noise,
worse, a lot of wear, and if to an extreme, breakage. When the head gets
thinner, the push rods become (effectively) longer and the relationship
between the end of the rocker and the end of the valve changes. At small
amounts of misalignment, the rocker tip will push across the valve stem and
increase wear and the valve will make noise as it gets slammed back and
forth in the guide. In the extreme, the rocker can make contact with the
retainer instead of the end of the valve and cause mega-wear and breakage,
not to mention "weird" noises. This problem needs immediate attention.
Measure the depth of the head to see how much has been removed (as I recall
the stock thickness on a '70 head should be 3.460") and take the same
amount off of the push rods. No you can't do that with stock push rods,
you'll have to buy a set of comp push rods with the pressed in ends.
The Car Curmudgeon
Nick in Nor Cal
single
> vacuum distributor, he's tried adjusting the valves (cold @ .010, warm
> while running) and probably a few other ways. Says he's tried
> everything. It is running very well and pulls well thru the gears and on
> the highway; just noisy, very noisy. Sounds like valve clatter I've
> taken out when I've adjusted my own valves, but he can't adjust it out.
> Personally I think he's tried to much and doesn't know what he's set,
> reset, etc. Please give me some input on where to start, what to look
> for, what to listen for (to). Many thanks in advance and let you know
> what we find oot.
> Will sit back with a cold brew for now and await the wisdom. Will have
> one for all of you, too.
> Answer direct to me if you don't care to embarass yourself ot the list;
> that's why I'm here!... Later, Steve
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