PINTO CAR CLUB of AMERICA
Welcome to FordPinto.com, The home of the PCCA => General Help- Ask the Experts... => Topic started by: LongTimeFordMan on November 18, 2019, 11:31:54 AM
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Hi all..
As I mentioned in another post here I am redesigning the custom manifold I built awhile back to fit 2 SU sidedrafts to my 2.0 and am planning to use some 1 1/4 galvanized EMT conduit for runners.
Since its not advisable to weld galvanized i want to remove the zinc.
I have been reading that vinegar can be used to etch off the zinc..
Has anyone had experience with this
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If not vinegar then likely phosphoric acid. But, even there you will have to likely lightly sand the surfaces if it works. Recently working on my Corvair I have used the washing soda and a sacrificial steel piece to transfer rust. I'm wondering if you could do the same to remove the galvanization???
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I was thinking of using concentrated vinegar and adding some table salt to make hydrochloric acid to speed up the process and maybe warming the solution a bit and placing it in the sun to keep it warm.
Ill give it a try and report back.
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If you see white powder on your weld there is still zinc present.
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And, isn't it interesting that the "Weld Thru Primers" as far as I know contain zinc. Go figure.