Hi Gary,
Steel fuel tanks, to prevent this problem, are made from specially coated
steel called "terne steel".
I this material, in Healey times, had a coating which was 80% lead making it
very dangerous to work with.
Modern "terne" steel is coated with a zinc/tin combination to avoid this
problem. I have no idea if the newer coating performs as well in petrol
tanks but I do know that if a tank is made from unplated steel this fine
powder rust is a constant problem.
Michael Salter
100 (1953)
AHX12 (1953)
Bugeye (1961)
http://www.netbug.net/blogmichael/
-----Original Message-----
From: healeys-bounces+msalter=precisionsportscar.com@autox.team.net
[mailto:healeys-bounces+msalter=precisionsportscar.com@autox.team.net] On
Behalf Of Warthodson@aol.com
Sent: April 28, 2008 8:43 AM
To: mayorrichard@hotmail.com; healeys@autox.team.net
Subject: Re: [Healeys] 100 gas tank
The tank was new. Unfortunately, he has so far been unable to determine
where he bought it. The very fine red powder appears to be rust, although it
is
hard to be sure. It is extremely fine, like talcum powder & slightly
magnetic,
so we think it is rust. I would expect any coating inside the tank to come
off in larger flakes, but I don't really know for sure.
Gary Hodson
In a message dated 4/27/2008 9:01:15 P.M. Central Daylight Time,
mayorrichard@hotmail.com writes:
Gary, Was your gas tank brand new, or a good original tank? Because, this
sounds like a similar situation that I had some years back. I resurrected a
1954 Jaguar MK 7 and began driving it. It had sat for many many years. The
gasoline that we were then getting at the pump was "oxygenated", which meant
that it had about 10% ethanal. This was all very new to we car guys (with
old
cars) and odd things started happening. In my case it turned out the the
ethanol in the gas broke down the glaze, or whatever you call it, that was
coating
the inside of my tanks (MK 7s have a tank on each side). It looked like a
very fine rust and it kept plugging my fuel filters on a regular basis.
Eventually it all dissolved off of the inside of my tanks and everything
then worked
fine. Richard Mayor
> From: Warthodson@aol.com
> Date: Sun, 27 Apr 2008 09:18:22 -0400
> To: healeys@autox.team.net
> Subject: [Healeys] 100 gas tank
>
> This weekend we discovered the float bowls on a friend's BN1 filled with
> approx. 1/2" of very fine rust, high enough to be blocking the passage
into the
> carbs. The car was restored 7 years ago & the gas tank was replaced at
that
> time. Upon examination, the inside surface of the tank was covered with
rust.
> He is considering an aluminum replacement tank & is interested in knowing
> which suppliers have tanks the fit well, have the correct fuel line
fitting & if
> there are any other issues he should know about.
> Thanks,
> Gary Hodson
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