rust in fuel tank

Had some rust in my NAA gas tank and tried to clean it out. However, this time I used a strong acid which I have used to clean tile and it seems this has caused a problem.

I have not used the tank for a few months and I noticed that the rust has returned at a very strong rate. So the question is, what can I use to stop the chem reaction? I am cutting open the tank now and it looks like I will need to clean it well so I can paint on a liner for protection.

So basically, want to stop the development of the rust caused by the acid, and also any suggestions on liner to use once I clean it.

Thank you in advance for your suggestions and advise.

David
 
Like Bruce said, you can get a new tank for under 200 bucks and in the long run would be easier than taking the hood on and off several times trying to get the old tank cleaned, i used a liner on mine years ago but it didn't last very long, and if the rust comes back it will plug up the fuel line when you are in the middle of the field or a long way from home, never fails.
 
Almost all of our ag machines as well as motorcycles, atvs and even some old gas equipment have lined fuel tanks.
We have never had one fail.
The reason for this is proper preparation.
Whenever this subject comes up, the suggestion is to buy a new one. Thats fine, but I would line it prior to putting it into service.
 
I would replace the tank. The new aftermarket tank fits all Ford's from 53 to 64. I put one in a 641 and had no problems installing it.

I bought my tank from tractorpartsasap.com. Through their eBay store. Saved $30.
 
Did you apply a rust preventative coating after the acid test? You can get a bucket of a commercial coating at your local auto parts supplier or order from specialty houses. You can get your tank boiled and coated locally too. As mentioned, a new tank will coat about $250 so your call. Me? I'd try to salvage the OEM one. How bad is your rust?

Tim Daley(MI)
 

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