From: RWolf99@aol.com
Message-ID: <5e2f0c4a.368b9e6e@aol.com>
Date: Thu, 31 Dec 1998 10:55:26 EST
To: lancair.list@olsusa.com
Subject: LC20 Engine Mount Blues
Mime-Version: 1.0

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I have just received my long engine mount.  While it looks like a nice piece
of hardware, there are significant problems with it.

My original (short) mount had "bolt tubes" (the tubes through which the bolts
attaching to the firewall go) which protruded up to 1/4 inch forward of the
weld forming the junction of the engine mount tubes.  The end result was that
the washers and the bolt heads fit square to the "bolt tubes".  There was no
intereference and it was a nice piece of work.

This mount has "bolt tubes" which stand off insufficiently from the weld
junction.  Several of the bolts cannot be inserted without the washer
interfering with the weld bead, and in one case the washer interferes with the
engine mount tube itself!  I can see grinding off weld bead material to make
clearance, but not the engine mount tube itself.

Two solutions emerge:

1)  Call Vern and ask for a replacement part that works

2)  Install a spacer tube, made from the "bolt tube" material to space the
washer and bolt head farther from the interference.  This would basically be a
steel tube maybe 1/8 inch long that is an extension of the "bolt tube"


What do y'all think?

- Rob Wolf
rwolf99@aol.com

[You probably would be ok using a small piece of that 5/8x7/16 tube as
a spacer to get the bolt head further from the weldment (let me know if
you want some, I think I've got a bit left from my new mount).  Another
option would be to mill away a bit of the washer so it fits around the
offending weld.  I don't think it would be a good idea to grind away any
of the weld bead, as you'd likely create a little stress riser there,
and who needs that kind of aggravation.

    <Marv>]