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leaking fuel tank "C"

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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=18137
Printed Date: 06 Feb 2025 at 2:47pm
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Topic: leaking fuel tank "C"
Posted By: ksulkey
Subject: leaking fuel tank "C"
Date Posted: 12 Sep 2010 at 4:43pm
Do any of you know if i can buy a new or reman fuel tank for my 1947 C ? Or a place to send it too.
Thanks Kevin



Replies:
Posted By: Dick L
Date Posted: 12 Sep 2010 at 5:14pm
If you don't want to do it your self your best bet would most likely be to take it to a radiator shop. They can boil it out and safely weld it or have it safe for a welding shop to patch. which ever would be needed.


Posted By: DaveKamp
Date Posted: 12 Sep 2010 at 9:52pm
The metal and manufacture of the original tanks is really good, so unless the tank is really, really bad, fixing it is the most common solution, and as Dick suggested, a radiator shop can boil it out clean enough for a decent welder to fix.  A bodyman with an english wheel, leather shotpad and a variety of curved hammers can make patch pieces, and weld 'em in so that the result is invisible from the outside, and darned near invisible from the inside.

Another person you could look for, is the guy who makes his own motorcycle fuel tanks... very similar craft.


Posted By: Larry Miller
Date Posted: 12 Sep 2010 at 10:21pm
I know looks are important but you can fix it yourself with JB weld and other similar products pretty easy. If it does not look good - just hang a purple wrench along the side and everyone will ask about the wrench and never look at your tank.

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I used to be young and stupid, now I am not young anymore.


Posted By: clovis
Date Posted: 13 Sep 2010 at 12:07am
Originally posted by Larry Miller Larry Miller wrote:

I know looks are important but you can fix it yourself with JB weld and other similar products pretty easy. If it does not look good - just hang a purple wrench along the side and everyone will ask about the wrench and never look at your tank.

Now that is funny!!!!!


Posted By: Coke-in-MN
Date Posted: 13 Sep 2010 at 8:17am
Depending on how big the leak is depends on the patch. it can be soft soldered, brazed, welded, or use a tank lining material like Pour 50 or similar products.
 I just bought a kit to do several motorcycle gas tank linings (some fiberglass tanks will not stand up to alcohol in gas) and was made by outfit that says it is better than Pour .


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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."


Posted By: wjohn
Date Posted: 13 Sep 2010 at 8:21am
I just coated the tank in my B with Kreem last weekend. It was setting up but I had to get back to school, so I'll have to wait a few more weeks to see how it did.

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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45


Posted By: CJohnS MI
Date Posted: 13 Sep 2010 at 9:37am
Originally posted by Coke-in-MN Coke-in-MN wrote:

Depending on how big the leak is depends on the patch. it can be soft soldered, brazed, welded, or use a tank lining material like Pour 50 or similar products.
 I just bought a kit to do several motorcycle gas tank linings (some fiberglass tanks will not stand up to alcohol in gas) and was made by outfit that says it is better than Pour .


That's good news on the fiberglass tanks. I had the local radiator shop do one for my V4 Honda Sabre about 15 years ago. Never again will I let a shop touch one. It's just a mess now. Many hours doing custom tin work on it, and now I have to scrounge another and start over.

Regarding alcohol:
Just repaired the aluminum float bowl on an older Briggs engine with epoxy. One week later, it was leaking again. The Alcohol in the gas had softened the epoxy.



Posted By: Jeffy0023
Date Posted: 13 Sep 2010 at 9:43am
I used a fibre glass kit from Auto Zone and did the bottom of my B tank. very easy and can be sanded down before paint. Looks good and only cost like $25.00


Posted By: Brian Jasper co. Ia
Date Posted: 13 Sep 2010 at 11:32pm
Could a guy fill the tank with water after all the gas is evaporated to drive out the fumes and then weld on it? I fixed the same gas tank on a Bronco a couple of times with JB Weld. Lasted about 2 years each time.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford



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