Dear Greg,
I would put the Facet pump between the tank and the SU, as you will not have
to modify the long fuel line between the SU and the Carbs. I have not had
good luck with the Facet Pumps, as I had one fail after two years when I
tried to use it as a backup and the replacement leaked externally after a
year. Then I tried a new one and it did not work out of the box. My SU
has been modified by David Dubois to use an enclosed magnetic activated reed
switch to switch a transistor and therefore should not be a problem. I am
working with David to design an optical version that eliminates the swing
mechanism. I carry a modified spare SU with me just in case it fails. I
am now anal about carrying spares, as I have had to be towed more than once
in the past 5 years.
Mark
Date: Mon, 17 Sep 2007 12:22:41 -0500
From: "Greg Lemon" <glemon@neb.rr.com>
Subject: [Healeys] Fuel Pump Back Aup
To: <healeys@autox.team.net>
Message-ID: <002801c7f94f$5b04c3c0$6401a8c0@toshibauser>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I am going to put my SU fuel pump, now rebuilt and ticking merrily away on
the test bed I made, back on.
I currently have a facet newer style with the black plastic body. I think I
may leave that pump in line with a switch to turn it on as a back up. My
only question is should I put it in between the SU pump and carbs, or SU
pump and tank, only advantage I can think of is that if it is between pump
and tank if the SU fails the back-up will be primed, vs. it likely being
dry if I were to put it in line after the SU. Don't know if it is better to
push or pull gas through the back up pump? Or doesn't matter.
Any thoughts or advice appreciated. I am also considering just throwing the
spare in the trunk with some rubber hose so it can be installed if needed
(usually when I have a spare in the trunk the old part suddenly becomes more
reliable!)
Greg Lemon
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