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Galvanizing frame?

Discussion in 'The Hokey Ass Message Board' started by Dzus, Jul 27, 2011.

  1. Dzus
    Joined: Apr 3, 2006
    Posts: 321


    What sort of luck have you had galvanizing frames? I'm swapping out the frame on one of my drivers due to rot and am considering what are the best options to to prevent this from happening again. This particular frame is susceptible to rust through due to the boxed design and layout of the punched holes that trap sand and water.
    Also, anybody know who is TX will galvanize a car frame? The closest one in SA won't touch a car frame.
  2. zgears
    Joined: Nov 29, 2003
    Posts: 1,557


  3. niceguyede
    Joined: Jan 19, 2009
    Posts: 633

    from dallas

    We just had a customer with a jeep that he brought to us to blast. When we got his jeep apart it was toast. The frame had been rusted through from the forward rear leaf mount back. The guy he got it from filled it with bondo and painted it. After finding another jeep to continue his project he had us blast it and he had it galvanized. The one thing the guy told us is that most factory welds wont hold up to the process, so we had to touch up any questionable welds. We went over the leaf mounts and body mounts just to make sure. I dont know who he used to galvanize it, but if you check with my boss (ntxcustoms) he might know. I do know it wasnt cheep!
    edit: it was galvanized in texas, I think in the dfw area.
    Last edited: Jul 27, 2011
  4. Hackerbilt
    Joined: Aug 13, 2001
    Posts: 6,247


    I've heard of people making aftermarket frames for early british Landrovers that were galvanized...not sure if its from galvanized sheet or dipping after though.
    Maybe you could check the internet for those frames and perhaps get some info on the process or even have them do the deed for you.

    Worth a look!

  5. Yep! I've personally done this on numerous Land Rovers and even a Range Rover classic chassis. They are all boxed and are notorious for rusting out. We have them dipped and have never had one warp. There is definitetly a lot of clean up after the process.
  6. Fenders
    Joined: Sep 8, 2007
    Posts: 3,922


  7. ntxcustoms
    Joined: Nov 10, 2005
    Posts: 908

    from dfw

    As Niceguyede said we have a customer in the shop now that dipped his frame. I have a pic of it here somewhere and I'll post it as soon as I can. It looked freakin awesome and personally I would have left it as is, but he decided to top coat it. If you decide to paint over gal. you have to wait for it to fully cure (it'll start getting its common whitish look) otherwise it'll need to be throughly sanded.
  8. ussrjeppi
    Joined: Apr 12, 2011
    Posts: 115

    from Iceland

    will be galvan dipping my chassis but was pointed that if the material thicknes is to thin it will warp ,
  9. ntxcustoms
    Joined: Nov 10, 2005
    Posts: 908

    from dfw

    If its to thin then you need another frame!:D
  10. CutawayAl
    Joined: Aug 3, 2009
    Posts: 2,144

    from MI

    Galvanizing reduces the fatigue resistance of steel. Whether that would be a significant issue in your case I can't say.

    Galvanizing is good at preventing corrosion, but everywhere the surface is chipped, scratched, or otherwise compromised, galv anic corrosion accelerated deterioration beyond what would otherwise have occurred.

    This is what I would do:
    - Media blast and thoroughly clean the metal.

    - If you can find someone with a tank big enough to deposit a layer of zinc phosphate do that. Otherwise, it can also be done manually, but it's a lot of work and pretty messy.

    - Apply a good quality zinc-chromate epoxy primer.

    - Paint with a good quality epoxy or polyurethane paint.
  11. Streetwerkz
    Joined: Oct 1, 2008
    Posts: 718


    You can hot dip galv the frame just fine. The main thing you need to do is make sure its clean rust & contamination free. Tell the galv shop not to quench the frame so it will accept a coating powder coat or paint
  12. 296 V8
    Joined: Sep 17, 2003
    Posts: 4,666

    296 V8
    from Nor~Cal

    Stuff I build at work gets done all the time.

    There can be no fully boxed in areas that are un vented and there needs to be full drainage.

    Your biggest obstacle will probably be finding a place with a large enough tank.
  13. Dzus
    Joined: Apr 3, 2006
    Posts: 321


    Wow good info. What I need is some way to protect the inside of the boxed sections, where you can't readily spray a coating.
    Who did the galvanizing job in dfw?
    Does anybody in TX do the zinc phosphate coating?

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