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Valve Guides

To: mgs@autox.team.net
Subject: Valve Guides
From: WSpohn4@aol.com
Date: Sun, 17 Jan 1999 13:55:39 EST
<< When valve guides wear out, one
relatively inexpensive way of refreshing them is to drill them out a little
and install a thin-wall sleeve.  >>

NOT a good way to deal with this problem. A much better way was developed for
American engines that don't have replacable guides - the guides are machined
into the castings.
They are drilled out until parallel and a bronze helicoil is inserted. These
stay in much better than any liner or sleeve can, as they are keyed to the
spiral groove machined into the inside of the guide for their installation.


Bill

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