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Technical broken bunghole(s)

Discussion in 'The Hokey Ass Message Board' started by SDS, Sep 24, 2025.

  1. Wanderlust likes this.
  2. Wanderlust
    Joined: Oct 27, 2019
    Posts: 1,057

    Wanderlust

    Sure wouldn’t want to google that :eek::rolleyes:
     
  3. SDS
    Joined: Apr 28, 2011
    Posts: 1,052

    SDS
    Member

    I can't possibly get to the back side on the top bung. On the bottom, the clearance notch for the spring is in the way, so no dice there either. I will probably drill a hole from the top to the bung and plug weld it for support.
    These will be filleted TIG welds around the flange on the bungs. The weld will NOT be ground. The driver side is cracked too, so I'm doing all 4 - welding tonight, will post pics tomorrow.
     
    chryslerfan55 and Happydaze like this.
  4. SDS
    Joined: Apr 28, 2011
    Posts: 1,052

    SDS
    Member

  5. When you say Bunghole are you talking about O2 sensors or something else?
     
  6. SDS
    Joined: Apr 28, 2011
    Posts: 1,052

    SDS
    Member

    I am the great Cornholio, have you read the whole thread?
    I need TIG for my bunghole !
     
  7. 31 Coupe
    Joined: Feb 25, 2008
    Posts: 521

    31 Coupe
    Member

    Totally agree ..... the larger flange diameter provides extra welding length at the mounting point but preferably extend them through to the other side to be welded there too. They can be drilled and tapped internally to avoid seeing nuts on the inside chassis face ..... BUT, drill a neat bolt shank diameter about 3/4" - 1" deep and thread the rest. Then use longer #8 bolts with a solid shank extending inside that hole to provide better shear strength/support.
     
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  8. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 15,619

    Bandit Billy
    ALLIANCE MEMBER

    Didn't Willy Nelson or Roy Orbison do a song called Broken Bung Holes? Sounds familiar
     
    porkshop likes this.
  9. DDDenny
    Joined: Feb 6, 2015
    Posts: 22,092

    DDDenny
    Member
    from oregon

    There was a movie named that.....no wait!
     
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  10. Happydaze
    Joined: Aug 21, 2009
    Posts: 2,323

    Happydaze
    ALLIANCE MEMBER

    Looks similar to my arrangement! Looks like you're skipping the plug weld, presumably as it looks like the milled clearancing is breaking into the threads?

    Chris
     
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  11. cfmvw
    Joined: Aug 24, 2015
    Posts: 1,063

    cfmvw
    Member

    I was thinking a piece of steel plate about 3/4" thick drilled and tapped to match the mounting holes to go on the inside of the frame. That would spread the load over a greater surface area instead of relying on material immediately around the holes.
     
  12. RodStRace
    Joined: Dec 7, 2007
    Posts: 8,397

    RodStRace
    Member

    Okay, someone has to say it.
    Looks like great penetration on your bungholes!
    You may want to add another lap if they are only supported on this end, though.
    [​IMG]
     
    Wanderlust and Happydaze like this.

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