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Galvanized Tailgate?

Discussion in 'Intermediate CJ-5/6/7/8' started by NC73CJ5, May 20, 2022.

  1. May 20, 2022
    NC73CJ5

    NC73CJ5 Shade tree tinkerer

    North Carolina
    Joined:
    Dec 18, 2020
    Messages:
    19
    I have started on the bodywork on my 73 CJ5. It appears to be mostly original, very little rust, but the tailgate appears to be galvanized. I am certainly no expert in bodywork, painting, or metallurgy, but it has that appearance. The original(?) paint is peeling off of it, without a spec of rust. Were there any tailgates made with galvanized steel? Is this some sort of coating applied by a previous owner? How do I strip this to get some sort of primer or paint to stick? See photo D61573D0-E2D5-44D2-87D1-2A3131B15199.jpeg
     
  2. May 20, 2022
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Liberty Lake, WA
    Joined:
    Aug 13, 2015
    Messages:
    6,656
    I had one just like that with the same “Jeep” insignia many years ago. I often wondered about it.
     
  3. May 21, 2022
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    I don't think there's any problem with paint bonding to zinc, if that's what it is. Could be poor prep by the PO, or a 'metallic coating' that's not compatible with the top coat. Assuming it's zinc, it looks to me like the plating is failing in some areas, and you have rust pitting coming through the coating.
     
  4. May 22, 2022
    NC73CJ5

    NC73CJ5 Shade tree tinkerer

    North Carolina
    Joined:
    Dec 18, 2020
    Messages:
    19
    A little deeper dive into the web sand I found this website that states that AMC did in fact produce some galvanized tailgates. And I have found some articles about the best way to treat galvanized steel and specific primers.

    https://cj3b.info/Dating/DatingTailgates.html
     
    Ol Fogie, 47v6 and ITLKSEZ like this.
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