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1939 Chevy Top Hat Chassis

Discussion in 'The Hokey Ass Message Board' started by rdaggett, Nov 25, 2008.

  1. rdaggett
    Joined: Dec 28, 2006
    Posts: 41

    rdaggett
    Member

    I had a question for everyone:

    I was wondering what would be the easiest way of replacing the bottom boxing plate on the ch***is? I have a hole in the driver rail on the bottom.

    The hole is about the size of a half dollar coin. I was thinking of trying to break the spot welds and replace the bottom plate but I cont want to deform or damage the top of the fram and lip ........

    Thoughts ideas ? Maybe a very thin chisle? I just know drilling them out will be hard ......

    Thank you all
     
  2. cleatus
    Joined: Mar 1, 2002
    Posts: 2,277

    cleatus
    Member
    from Sacramento

    Why try to replace a section - along with the spot welds - when you can just weld in a patch (flush) and grind it down to where you never could tell there was ever anything there?
     
  3. 49ratfink
    Joined: Feb 8, 2004
    Posts: 27,477

    49ratfink
    Member
    from California

    yeah, what cleatus said.
     
  4. atomickustom
    Joined: Aug 30, 2005
    Posts: 3,407

    atomickustom
    Member

    Is it a rust hole? Or something someone cut out or torched at some time?
    If it's rusty or ragged, cut it out square, put in a square patch flush, weld it up and grind is smooth and you'll be done, with less chance of knocking the whole frame out of alignment.
     
  5. alchemy
    Joined: Sep 27, 2002
    Posts: 23,460

    alchemy
    ALLIANCE MEMBER

    I fixed one once by cutting out the offending bottom section with a small cutoff wheel and grinding through the spot welds. Then drilled new holes in the edges of the replacement to rosette weld like the original spots, and welded the ends solid. Grind and you'll never tell where the patch was. Just about as much welding as if you were to patch a small piece inside the original section.
     
  6. squirrel
    Joined: Sep 23, 2004
    Posts: 60,975

    squirrel
    ALLIANCE MEMBER

    be sure to look over the whole frame for more thin spots.
     
  7. rdaggett
    Joined: Dec 28, 2006
    Posts: 41

    rdaggett
    Member

    Thank you for all of your responces ..... it is a rust hole it was under the front crossmember (found it when removing it) I will be taking all the shackles off on turkey day before dinner .....

    Sounds like the best bet is to cut the section out ad patch as I dont want to tweak the rest of the ch***is ....

    Any other ideas?
     

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