Gas Tank

[thom hole]

I think you're out of luck on this one . The tank dimenions are 53 X 32 X
5 inches, which fit exactly in the space between the cross members of the
frame. I looked and looked for alternatives before I invested the $200
per tank for the RENU process (which has a lifetime warrenty)....

>GMCers
>
>Need your help. Do any of you know what other GMC cars or trucks
>used the same gas tank as our motorhomes? Just got my new JC
>Whitney catalog. It shows a 25 gallon for the 73-81 Jimmy/Blazer
>for only $149.95. Thats cheaper than I can get it done at the tank
>renuz it joint.
>
>Most of the equipment used on our motorhomes is off the shelf
>stuff from other GMC equipment. Surely something like a gas tank
>would be used some where else.
>

 

[zachary zehnacker]

Arch,
I'd be pretty surprised if you found a stock tank that fit. Our tanks are
so shallow, I can't imagine another vehicle that would use them. One
interesting thing I did find once when I was searching the net for
information on GMCs was an article about the unsafe location of many gas
tanks. It specifically mentioned the GMC as having a well designed, safe
setup where the tanks were mounted between the sturdy frame rails. IIRC
only one other vehicle was mentioned as an example of another good gas tank
mounting design.

I must ask if all these gas tanks really need to be refurbished. We took
our tanks out and expected them to be in bad shape. Our GMC had sat for a
while before we bought it, so we expected some rust to have formed. When
we finally took our tanks out, they were perfect inside. Not one spot of
rust in the tanks. The outside looked ok, and now after some wire brushing
and some quality automotive paint on them they look great. Are our tanks
the exception? Do most of the tanks really have internal rust problems?

Zak

>GMCers
>
>Need your help. Do any of you know what other GMC cars or trucks
>used the same gas tank as our motorhomes? Just got my new JC
>Whitney catalog. It shows a 25 gallon for the 73-81 Jimmy/Blazer
>for only $149.95. Thats cheaper than I can get it done at the tank
>renuz it joint.
>
>Most of the equipment used on our motorhomes is off the shelf
>stuff from other GMC equipment. Surely something like a gas tank
>would be used some where else.
>

 

[hdavis]

>
>
> I must ask if all these gas tanks really need to be refurbished. We took
>our tanks out and expected them to be in bad shape. Our GMC had sat for a
>while before we bought it, so we expected some rust to have formed. When
>we finally took our tanks out, they were perfect inside. Not one spot of
>rust in the tanks. The outside looked ok, and now after some wire brushing
>and some quality automotive paint on them they look great. Are our tanks
>the exception? Do most of the tanks really have internal rust problems?
>

Our 76 Palm Beach had no rust insie the tanks, and the outside was clean. So, we had no need to refurb the gas tanks. While my
wife and I visited our coach during some repair work, we saw several other coaches' tanks. I'd guess that it ran about even
between rust and no rust.

Henry


Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (408) 462-5199 / full service marketing
fax: (408) 462-5198
http://www.henry-davis.com

 

[jon bradford peterson]

In 1993 I drove my 73 GMC from California to Texas were it had been
sitting since 1988 in a storage lot. When I got home to Texas I took off
my in line gas filter to see if it was dirty. Sure enough it was. It was
filled with a rusty looking sand substance. So I decided to drop the
gas tanks to have a look inside them. I was shocked when I saw how much
rust was in there. There was at least an inch of loose rust covering
the bottom of both tanks, and the walls were also covered in rust. The
sending units were covered in rust to, I don't see how they worked at
all. I'm realy surprised I made it to Texas with all the rust that was
in the tanks. I took the tanks to a radiator shop were I had them steam
cleaned then I had them seal coated. Its been 5 years now since I had
them coated and the gas still seems clean.
This motorhome had spent most of it life in Orange county California.
Just thought the rest of you would like the info.

Brad

 

[ross e stanford]

I've only been on the list a couple of months now so excuse me if
I am repeating something that has been discussed before.

Check out http://www.por15.com

Por 15 is a paint that everybody on my Jeep list swears by. It
apparently can stand up to anything except UV. For that you need to use
another paint to protect it from sunlight. Offroaders mainly use it on
frames.
They make gas tank kits that my motorcycle list swears by.
Much better and easier and safer to use than Kreem, (the previous
standard repair for the inside of gas tanks.)
I have only heard good things about Por 15.
I have never used it myself, but I feel good about it from all I have
heard.
Just a thought.
Ross in Boulder Co.

___________________________________________________________________
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[thomas g. warner]

Believe that POR 15 is distributed by kantor co and was developed as a rust
resistant paint

>
>I've only been on the list a couple of months now so excuse me if
>I am repeating something that has been discussed before.
>
>Check out http://www.por15.com
>
>Por 15 is a paint that everybody on my Jeep list swears by. It
>apparently can stand up to anything except UV. For that you need to use
>another paint to protect it from sunlight. Offroaders mainly use it on
>frames.
> They make gas tank kits that my motorcycle list swears by.
>Much better and easier and safer to use than Kreem, (the previous
>standard repair for the inside of gas tanks.)
> I have only heard good things about Por 15.
>I have never used it myself, but I feel good about it from all I have
>heard.
> Just a thought.
> Ross in Boulder Co.
>
>___________________________________________________________________
>You don't need to buy Internet access to use free Internet e-mail.
>Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
>or call Juno at (800) 654-JUNO [654-5866]
>
>
Tom & Marg Warner
Vernon Center NY
1976 palmbeach

 

[hdavis]

>
>Your post got me wondering Henry, if there is any truth to the
>recomendation to make sure the gas tanks are full before you store the
>coach for any length of time? The theory goes... a full tank does not
>form condensation on the inside because there is no air in the tank, from
>which to condense the H2O (from the air), onto the inside walls of the
>tank?

The theory did work before gas was reformulated. The condensation was minimal becasue there wasn't much headspace with air
(and water vapor).

The rumor about reformulated gas is that the additives have a short life, and decompose into other substances. I do not have
the facts on this. My own practice is to try to keep the tanks full when in storage - I'll worry about possible corrosion due
to reformulated gas later.

Does anybody have the chemistry facts about the stability of reformulated gas and what the breakdown substances are?

Henry


Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (408) 462-5199 / full service marketing
fax: (408) 462-5198
http://www.henry-davis.com

 

[john dolan]

> Our 76 Palm Beach had no rust insie the tanks, and the outside was
> clean. So, we had no need to refurb the gas tanks. While my wife and I
> visited our coach during some repair work, we saw several other
> coaches' tanks. I'd guess that it ran about even between rust and no
> rust.

Your post got me wondering Henry, if there is any truth to the
recomendation to make sure the gas tanks are full before you store the
coach for any length of time? The theory goes... a full tank does not
form condensation on the inside because there is no air in the tank, from
which to condense the H2O (from the air), onto the inside walls of the
tank?
- --
Regards,
John 74 Glacier near Washington, DC.