I well remember setting valves on cars with the motor warmed up and idling.
I do it cold these days as recommended, but had no real trouble setting them
warm and running.  As I recall, the problem was that over time the feeler
would be thinned a bit by the constant peening it would get being used this
way.  Soon .012 was .010 and looking a bit tortured.
Regards,
Glen Byrns
'59 bugeye
'59 Morris Traveller (Winifred)
 > That old Chevy probably had hydraulic lifters.  Tighten 3/4 turn or so
> after the clacking stops.  I think you need the feeler to get solid
> lifter clearances right.  Someone correct me if I'm wrong.
> Cheers,
> Derf
>
> >    We always set old straight six chevys while they were running.  I
> even
> >had a valve cover with a wide slot cut in the top to use to cut down
> onthe
> >oil splash.
>
> >ANyone ever set MGs like this.  Usually we'd use a feeler guage, but
> >sometimes only did it by ear..ease down until the clacking stopped.
 
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