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Cleaning rust from tank using acid

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    #1

    Cleaning rust from tank using acid

    Has anyone ever done this? The inside of my tank is sloooowly being rid of the coating that was put in it over the existing rust. But I'm not having much luck at removing the rust inside the tank. I've used aquarium rocks, drywall screws and sand blasting media without pressure. I don't have a sand blasting set-up.
    I do have some metal covers that I fabricated for the fuel gauge sensor and the petcock openings so blocking the tank off is no problem. Does anyone have a recommendation as to the type and amount of acid/water to use to fill the tank. I believe that this is the only way to get it all out. I have a Caswell's kit on hand to immediately coat it.
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    #2
    First you must get rid of all the coating. I used 50/50 mix of muratic acid and water and it got rid of all the rust in my tank. Use por 15 to recoat. This por 15 kit comes with a stripper to remove the old coating. Dan

    Fuel Tank Restoration
    http://www.por15.com/HD-CYCLE-TANK-REPAIR-KIT/productinfo/HDCTRK/
    Prevent leaks in rusted or new metal tanks with fuel tank restoration products from POR-15. We offer easy-to-use gas tank restoration kits & much more!

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      #3
      Wont muratic acid detsroy your paint if you get it on the outside? seems risky...

      Comment

        #4
        Originally posted by jwhelan65 View Post
        Wont muratic acid detsroy your paint if you get it on the outside? seems risky...
        I was careful. Dan

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          #5
          Originally posted by jwhelan65 View Post
          Wont muratic acid detsroy your paint if you get it on the outside? seems risky...
          Yes, it will destroy any paint it touches,

          and

          Yes, it is risky.



          Be careful with it.
          Bertrand Russell: 'Men are born ignorant, not stupid. They are made stupid by education.'

          ​

          Comment

            #6
            I've used Milkstone remover i got at the tractor supply store. Or you could just use phosphoric acid. Did not harm the outside of the tank. I used 3-4 gallons water and 1 gallon acid. Let it sit for a few days. Would swoosh the tank around every few hours. I didn't not coat the inside afterwards. I just keep gas in the tank most all the time.

            I really think it came out very well. No more rust.
            1979 GS850G
            2004 SV650N track bike
            2005 TT-R125 pit bike
            LRRS #246 / Northeast Cycles / Woodcraft / Armour Bodies / Hindle Exhaust / Central Mass Powersport

            http://s327.photobucket.com/albums/k443/tas850g/

            Comment

              #7
              Electrolysis is also a good method for removing rust. Only gets rid of the rust and not the base metal.

              Comment

                #8
                RustBeeter threadjacking

                I just used it and it works great. Check my thread http://www.thegsresources.com/_forum...d.php?t=148828
                No metal degradation, didn't harm MY paint, but instructions say to rinse it off paint.

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