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Technical Anyone drilled out their vega box's 2 lower threaded mounting holes??

Discussion in 'The Hokey Ass Message Board' started by Just Gary, Apr 4, 2019.

  1. ...and just mounted the box to the bracket with nuts & bolts? :confused:

    It's a brand new Borgeson vega steering box and P&J mounting bracket welded to a '32 frame.

    The box's two lower mounting holes have 3/8"-16 threaded holes. I ran a tap through them and ran the bolts through a matching die, but the bolts still don't seem to engage and tighten. Instead, it's as if the threads are wobbly & stripped. :(

    Thanks, fellas.
     
  2. mark latham
    Joined: Oct 24, 2018
    Posts: 42

    mark latham
    Member

    Are the bolts new and are you positive they are 3/8"-16?
     
    Just Gary likes this.
  3. OK did some research. 10mm mounting holes is not 3/8" 10mm = 0.393701
     
  4. Fordors
    Joined: Sep 22, 2016
    Posts: 1,745

    Fordors
    Member

    What brand of box? OEM Saginaw, or a Borgeson made on the factory tooling that they bought from GM actually has 7/16-14 threads. I can’t speak about the knock off vega’s they could be anything, even metric thread.
    If you really did want to drill out the threads make sure the casting has a flat surface where the nuts or bolt heads will rest, but if it’s a knock off cut your losses and throw it away.
    In looking at a GM Vega box clearance is tight for that but a machine shop could handle it for $$.
     
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  5. 31aford
    Joined: Dec 20, 2006
    Posts: 67

    31aford
    Member
    from az

    are you sure they are 3/8" I have two original boxes and they are 7/16 -14 threads on both of them
     
  6. Also 1.5 pitch is (near) equal to 16 threads per inch.
     
  7. lake_harley
    Joined: Jun 4, 2017
    Posts: 501

    lake_harley
    Member

    X 3 on 7/16"

    Lynn
     
  8. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 877

    19Eddy30
    Member
    from VA

  9. tim troutman
    Joined: Aug 6, 2012
    Posts: 160

    tim troutman
    Member

  10. WB69
    Joined: Dec 7, 2008
    Posts: 611

    WB69
    Member

    Yes
     
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  11. lake_harley
    Joined: Jun 4, 2017
    Posts: 501

    lake_harley
    Member

    Just Gary....BTW I too recently bought a Borgeson box for my '31 Model A. I read a lot of threads and comments about various re-pop Vega boxes and to me it sounded like the Borgeson box is a good unit and although not the least expensive out there it got generally good comments. It seemed like the best bang for my $$.

    Lynn
     
    Just Gary likes this.
  12. My original vega box takes 7/16 coarse bolts
     
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  13. Ok, guys. I just checked and 7/16"-14 fits MUCH better.:rolleyes:
    I'm feeling pretty stupid right now...:oops:

    I'll use new 7/16"-14 bolts. But if I boogered the threads too badly, guess the fall-back plan will be to drill out the holes like some of you've done.

    Thanks again.
     
    bct, Dino 64 and Johnny Gee like this.
  14. indyjps
    Joined: Feb 21, 2007
    Posts: 3,572

    indyjps
    Member

    Thread guage is your friend, $5 and youre set. Glad you got it figured.
     
    Just Gary likes this.
  15. Fordors
    Joined: Sep 22, 2016
    Posts: 1,745

    Fordors
    Member

    Stupid? I’d say you are pretty smart for not falling for cheap is good enough and buying quality instead.
     
    Dino 64 and Just Gary like this.
  16. X-cpe
    Joined: Mar 9, 2018
    Posts: 484

    X-cpe

    It isn't stupid until you don't apply the lesson. You were smart enough to realize you had a problem and come to the land of solutions.
     

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