Mike :
Rockers can be replaced without pulling the head, lifters cannot. Some
noise is normal, I'd say with a hot engine and stock exhaust it should
be just barely audible from the driver's seat at idle. Driving only
2-300 miles per month, I'd say you could leave the rockers alone
forever, or at least until you get some more definite symptoms. Using a
'Clik-adjust' or similar will also help, or you could try cutting down a
feeler gauge until it is the same width as the valve stem. Either
method will let you set the lash correctly, without getting a false
reading caused by rocker tip wear.
I've heard that getting rockers rebushed and refaced is a relatively
inexpensive operation, but I haven't tried it yet.
I wouldn't bother with the lifters, unless the pushrods don't rotate.
If that happens, prompt lifter replacement may save the camshaft, but
usually not. (IMO the problem usually starts with a worn camshaft, the
lack of rotation and subsequent lifter wear is a symptom.)
Randall
Mike Barron wrote:
>
> Phil and Michael, thanks for your prompt reply. My understanding is that
> there is always some tappet noise, although at speed it is not so
> noticeable. This is true in my case, although I suspect that the wear
> described in the rockers, etc. is present in my car. When the engine was
> overhauled, these, along with the other relavent items in the head were not
> replaced, being in what was described good condition.
>
> Can the rockers, lifters, etc. be replaced without removing the head? Or is
> this a job for super mechanic? It looks fairly straightforward to me.....I
> know this might be a long answer, so feel free to reply off list if you
> think necessary. One more question....How long should I wait, considering
> that the car gets driven less than 200 or 300 miles per month? All help is
> really appreciated.
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