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Date: Mon, 06 Mar 2006 23:44:12 -0500
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From: "Robert R Pastusek" <rpastusek@htii.com>
Subject: RE: [LML] Fuel boost pump location - 360
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Matt writes:

The best place appears to be forward of the firewall.  Several listers have
commented that aft of the firewall is preferable- possible heat problems
could occur firewall forward.

I'd like to put my at the passenger foot area, but it just doesn't seem to
fit.  So am I going to regret putting it firewall forward??


Matt,
Heat is an issue with almost anything installed forward of the firewall, BUT
it's not necessarily a show-stopper. Consider putting a cooling shroud
around your fuel pump and feeding it fresh air via a SCAT tube from the
upper forward cowling area. The IV-series aircraft have such an installation
around the gascolator. It's always possible to "heat soak" the pump/fuel
system after shutdown, even with this setup, but if you mount it low on the
firewall, it will be less susceptible to heat soak. BTW, I recently saw an
aluminum AN-4 fitting fail on an IV-P turbo oil line. I'm going back to
check that I don't have any AL fittings in/on the engine. I don't think
firewall installations are as risky for vibration failures as things on or
attached directly to the engine, but those older, gray haired folks do have
lessons to pass along...

Speaking of lessons, there are a very large number of -360's flying. You
might ask others what they've done, and why. I always like to know the
why...

Bob Pastusek