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Technical 34 pickup sheet metal delaminating?

Discussion in 'The Hokey Ass Message Board' started by area51bob, Mar 22, 2018.

  1. area51bob
    Joined: Jul 6, 2011
    Posts: 11

    area51bob
    Member
    from san diego

    this truck followed me home yesterday. the cab had been dipped to bare metal and i noticed some strange bubbles in one area on the left front. i started poking around and found that the metal seemed to blister out on both sides,so i drilled a hole in one of the blisters and found it was actually two layers of half the regular thickness. has anyone seen this before?[​IMG][​IMG][​IMG][​IMG]


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    chryslerfan55 likes this.
  2. Odd. I don't know but am interested to find out if anyone else knows anything about this.
    It wasn't covered in lead was it?
     
  3. Petejoe
    Joined: Nov 27, 2002
    Posts: 11,227

    Petejoe
    ALLIANCE MEMBER
    from Zoar, Ohio

    I’d guess you have an inner layer in there and it’s not really delaminating.
    The moisture may have been trapped between those two and caused the problem. Just speculating.
     
  4. i really don't believe the "dipped to bare metal", looks like there is still paint and as 56don mentioned lead.
     

  5. thirtytwo
    Joined: Dec 19, 2003
    Posts: 2,641

    thirtytwo
    Member

    The difference in color in that area makes me think still has lead filler on it
     
    oldrelics likes this.
  6. Looks like lead.
     
    oldrelics likes this.
  7. Dave Mc
    Joined: Mar 8, 2011
    Posts: 2,271

    Dave Mc
    Member

    Looks like the guy that spread the Lead didn't neutralize the acid after tinning. ?
     
    X38 likes this.
  8. area51bob
    Joined: Jul 6, 2011
    Posts: 11

    area51bob
    Member
    from san diego

    the area is definitely not leaded in that area. you can see what dipping did to the lead in the second picture. as i ripped the out side of the bubble off the pieces are magnetic.


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  9. area51bob
    Joined: Jul 6, 2011
    Posts: 11

    area51bob
    Member
    from san diego

    it is definitely down to bare metal. all the paint is gone. there is some seam sealer and there are a few areas where some filler was real thick and it did not remove all of it.


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    tb33anda3rd likes this.
  10. Possibly bad metal from the factory. It's a wonder it has lasted all these years.
     
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  11. area51bob
    Joined: Jul 6, 2011
    Posts: 11

    area51bob
    Member
    from san diego

    that’s what i’m thinking cause it is only on one section, there are bubbles right up to one side of the seam on the cowl and perfect on the other side.


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    shadetreerodder likes this.
  12. millersgarage
    Joined: Jun 23, 2009
    Posts: 2,139

    millersgarage
    Member

    I found that on my 33 after the dip. I had some bubbles in the rear panel. Almost looked like it was a laminate bubble, or like it was plated.
    When I ground it off, it took a while for the edge to feather out.
    I have no idea why it happened, just that it did.
     
    area51bob likes this.
  13. Maybe in the past that panel was replaced by someone using some odd metal? It is indeed strange.
     
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  14. vtx1800
    Joined: Oct 4, 2009
    Posts: 1,414

    vtx1800
    Member

    I don't know if there were two layers of metal in the structure there but if there was we all know what happens when water and debris gets between the two pieces. Here is what happend to my Studebaker, there was the formed sheet metal for the front and there was an additional reinforcement piece spot welded underneath so the horn mounting would be more rigid, I had to cut the metal and reinforcement piece out and totally replace....all that said, somehow it doesn't look like that is the same issue you have. In my case it was just cut out and replace both the skin and the reinforcement. IMG_1513.JPG IMG_1514.JPG
     
  15. Dave Mc
    Joined: Mar 8, 2011
    Posts: 2,271

    Dave Mc
    Member

    The Greenhouse effect ^
     
  16. oldolds
    Joined: Oct 18, 2010
    Posts: 3,295

    oldolds
    Member

    That is factory installed rust. They were working on perfecting it for years. It took Ford until 1957-1960 to get it perfected. :eek:
     
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  17. Atwater Mike
    Joined: May 31, 2002
    Posts: 10,792

    Atwater Mike
    ALLIANCE MEMBER

    I'd seen that once, on a car Mickey Sanders was working on. It was an English car, (Rolls-Royce, once owned by the previous Queen of England!)
    Mickey hated to cut a large patch, but was forced to.
     
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  18. Beanscoot
    Joined: May 14, 2008
    Posts: 2,354

    Beanscoot
    Member

    I'm guessing that there was some contamination in the steel that was trapped as it was rolled into sheet metal. I have seen this in non-automotive situations. At a machine shop I worked at we had something similar but different. Some aluminum bar stock that had separations inside it, that we only found while machining it.

    "the previous Queen of England"
    Which one's that?
     
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  19. Beanscoot
    Joined: May 14, 2008
    Posts: 2,354

    Beanscoot
    Member

    Okay, I'll answer my own question. The previous Queen of England was Victoria - so that's one old Rolls, considering she died in 1901.
     
    area51bob likes this.
  20. Motor_Psycho
    Joined: Jan 21, 2008
    Posts: 81

    Motor_Psycho
    Member

    Also not possible, as the first Rolls-Royce (the 10hp) was not released until December 1904.
     

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