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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!inuxc!pur-ee!uiucdcs!convex!wilson
From: wilson@convex.UUCP
Newsgroups: net.cycle
Subject: Re: Looking, Looking...
Message-ID: <82800010@convex>
Date: Fri, 27-Sep-85 10:05:00 EDT
Article-I.D.: convex.82800010
Posted: Fri Sep 27 10:05:00 1985
Date-Received: Sun, 29-Sep-85 06:13:26 EDT
References: <64@NCSUVM>
Lines: 15
Nf-ID: #R:NCSUVM:-6400:convex:82800010:000:893
Nf-From: convex.UUCP!wilson    Sep 27 09:05:00 1985


From what you describe my first guess would be that the piston pin/pin boss
fit is too tight in the problem cylinder.  The fact that it takes sustained
high speed running to sieze the piston usually indicates that there is a 
localized heat source causing the problem.  Lubrication (or lack thereof)
problems often cause one of the piston rings to spot weld itself to the
cylinder resulting in a narrow, well defined scratch in the cylinder wall
while problems like the one you have will display a much wider mark.  If
you have such a mark and it happens to be on the left of right side of the
cylinder, I'd go for a new piston pin and maybe a piston too.

                                   Stuart Wilson
                                   Convex Computer Corp.
                                   Richardson, Tx.
                                   {inhp4,allegra,uiucdcs,ctvax}!convex!wilson


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