Many of the AMC heads I've seen with this problem were installed
within the last few years.

I find it unlikely that importer had a 5+ year supply of AMC heads.
Actually, since I know the importer, I can guarantee you they did not
have a 5+ year supply.  More like 3 months at a time...

I've seen AMC heads installed less than a year ago with excessive wear
on the grooves where the keepers sit.

Sorry, it's not a "bad batch" phenomenon.  AMC heads are great, but in
my experience, the cheap valves (Brazilian I think) are crap.

Cheers,

Jeff

On Fri, May 29, 2009 at 12:04 PM, pickle vanagon <greenvanagon@gmail.com> wrote:
> Don't mean to point out the obvious here, but there is nothing inconsistent
> with having seen a bunch of crap AMC heads/valves, and believing that the
> AMC heads/valves have been fine for the past 5 years or so.� Unless you are
> looking at date stamps on those crap AMC heads and they were recent (and you
> somehow know the mileage).
>
>
>
> On Wed, May 27, 2009 at 1:51 PM, VW Doka <vw.doka@gmail.com> wrote:
>>
>> "Doesn't exist"?? �That pile of scrap AMC heads that I took the
>> recycler must've been a mirage...
>>
>> Perhaps it's a "west coast" thing...
>>
>> Jeff