Fuel foaming

[richard.lewis]

Using a Du-bro sintered brass clunk can eliminate bubbles from foaming fuel
in the carb line in installations where foaming can't be otherwise
controlled.  I had one of those Airmadillo plastic and aluminum trainers and
the tank was hard mounted the aluminum frame..yikes.  Couldn't get through
half a tank without leaning out on foam/bubbles and dying.  I tried the
armor-all thing, and it didn't seem to help.  Added the sintered brass clunk
and then I could run it dry without the foam affecting the fuel feed.  You
must be careful though, it is not recommended to fill the tank through the
sintered brass clunk, because it is a filter and traps dirt on the inside to
be sucked into the carb later while the engine is running.

Richard
-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Martin X. Moleski, SJ
Sent: Friday, August 13, 2004 3:59 PM
To: discussion at nsrca.org
Subject: Re: Fuel foaming


--On Friday, August 13, 2004 4:53 PM -0400 "Fletcher, Richard"
<Richard.Fletcher at gs.com> wrote:

> I have heard that adding a capful of Armorall to a gallon of fuel
> eliminates all fuel foaming.

The most I've ever heard of--or used--is a few drops per gallon.
I used to do it for hard-mounted tanks.

Clarence Lee warns against it for fear of having the silicon
in the Armorall get burned onto the piston and liner.  He talks
about having to chisel silicon out of a motorcycle after
experimenting with some silcon-based oil.

I stopped doing it years ago for no particular reason.  I'd try
it again if I thought I was having otherwise insoluble foaming
troubles.

							Marty #2359
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