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Best Fuel Tank Restoration Method


Bingster

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I've seen various methods on YouTube for cleaning out fuel tanks interiors:  Vinegar, PR-15 kit, etc.  Then the bolts and nuts to shake around.  I'm not certain mine can be restored. I haven't taken it off yet. But I rebuilt the pump and I agree that the whole fuel system should be replaced. 

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I would go with new unless there is no new available. 

 

https://vansauto.com/product/41-48-dodge-plymouth-desoto-chrysler-6-cylinder-gas-tank/

 

My 51's tank is in excellent condition, fortunately, because there is no new available.  Not sure if a different tank can be made to work

 

 

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An option, perhaps not the least expensive, but in the long run the least taxing on your patience - Most competent radiator shops also do gas tanks.  First things first, they'll let you know if your tank is even restorable.  Clean, solder or patch if necessary, seal, etc.  They use chemicals to clean them, vs. beating them up with inserted foreign objects, and test them to insure they don't leak.  You don't have to worry about handling any chemicals, sealants, or still explosive old gasoline vapor.   I've had two gas tanks restored by radiator shops with no issues. 

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About a dozen years ago I had an old tank I intended to clean and recoat so I bought the POR-15 kit. The first step is their cleaner/degreaser. After that, I decided not to go any further. Two rounds of that stuff (mixed with hot water) removed an amazing amount of crud. Mine proved solid, just crudded up, and I figured any attempts at coating could foul things up. 

 

I would second the idea that, if the tank has serious issues, a replacement is worth doing. On models where it is available, the price really isn't that bad. 

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I strapped mine to a cement mixer with gravel and evaporust in it. 14 hours later it was spotless inside. It developed a leak around the outlet fitting while it was being installed. So I pulled it back out and soldered it up...with a torch...with gas in it...when it comes down to it, what are you comfortable with, and willling to do to get the results you want?

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HA HA I did a 2nd look at that also ..... so many horror stories. Some true, some not.

I watched a video of a guy welding on a freshly used tank, he flushed it with water then using duct tape sealed all holes. Connected a shop vac hose to exhaust pipe from a running car to the fill neck on the tank.

 

Kinda a mickey mouse way to do things but worked ok. The carbon dioxide from the exhaust removed all oxygen from the tank so there really was nothing that could explode.

I gotta take some precautions before I weld on a tank ...... Still not confident I would have correct sized Moose balls to do it anyways.

 

 

Using acids to clean a tank bothers me. I assure you that some murriatic acid in your tank would remove the rust. But if you do not get every bit of it properly neutralized afterwards ..... you will have bigger problems then you started with.

 

There are safer products to use, like evaporust or the citrus products ..... Then mechanically turning them with gravel in them.

Let a radiator shop deal with it? You have options.

 

The way I figure it, you will spend money to correct this problem.

Por15 kit is $100.

A radiator shop I bet would be more.

Evapo rust then strap to a wheel to turn it for hours .... You have the cost of the product + the fuel or electric cost to turn the tank for hours.

 

You have no guarantee that if you spend $100 on it to clean it, that it will work & you can use it.

Then you are looking for a replacement for sure.

 

It is very possible now that you have your tank out, have dimensions. ...... you could go to pick & pull and grab something from a modern vehicle that you could make work?

Or possibly find something from a small vehicle that you can safely strap down inside the trunk .... Think race car with a fuel cell.

 

Or after the hours, fuel, time searching for a shortcut, rides home on a flatbed ..... A new $300 fuel tank looks pretty good.

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Los pretty much hit on my thinking. Add into the fact that once you clean it you may find out you had a worse situation than you thought you did LOL. I have 13 letters in my last name so that's the way my luck runs.

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9 hours ago, Bingster said:

I'd be comfortable with everything you said up until "with gas in it!!"

It was a cold day and vaporization was minimal. Confidence comes with understanding. Even if I had of ignited the vapor, the filler neck was open, so it wasn't a pressure vessel, It can't explode. That and my middle name is danger.

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