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Re: Camshafts

To: "Peter C." <nosimport@mailbag.com>, "Larry Macy" <macy@bblmail.psycha.upenn.edu>
Subject: Re: Camshafts
Date: Wed, 11 Oct 2000 00:43:51 +1000charset="iso-8859-1"
Cc: "Spridgets" <spridgets@autox.team.net>
References: <4.3.2.7.2.20001010082022.00c26ba0@127.0.0.1>
Are you sure the rocker shaft was installed correctly? If the oil hole
doesn't line
up (rocker shaft and pedestal holes), then the rockers run hot/dry and
they tend to chew
up the tip of the rocker, top of valve stem (and turn the shaft blue
etc).

Mike

----- Original Message -----
From "Peter C." <nosimport at mailbag.com>
To: "Larry Macy" <macy@bblmail.psycha.upenn.edu>
Cc: "Spridgets" <spridgets@autox.team.net>
Sent: Tuesday, October 10, 2000 11:28 PM
Subject: Re: Camshafts


> Larry,
>          If you can drag yourself from the Kleenex box, have a look
under
> the valve cover. I suspect you've either ground down a cam lobe or
two, or
> are machining away a lifter (tappet, follower). A crude check is to
observe
> (measure) and compare the lift of several pushrods at the rocker.
Once a
> lifter has worn through its hardness, the deteriorate very quickly,
in my
> experience. Cam lobes will wear also, but not quite as fast...
again, in my
> experience. This would account for adequate oil pressure and self
> de-adjusting valves.
>          Good luck. This is nothing to sneeze at. (sorry)
>          Peter C
> ----
> At 08:29 PM 10/9/2000, Larry Macy wrote:
> >Ya know, I read this earlier today, and I've bee wondering. (sorry
have a
> >cold, can't pronounce the n's too well) I recently readjusted the
valves
> >in the Midget. Man were they off. Now a few weeks later, I find
metal in
> >the oil. Tonight (third time in 2 weeks), I changed the oil an
found no
> >metal in the oil. But it is starting to show symptoms of the valves
> >needing readjustment. You know, iccky idle, stumbles off line, etc.
I
> >have collected some oil to send for analysis, but I am not sure
that
> >helps me. Maybe help somebody else.
>
>


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