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Thread: Urgent help!!! installing subframe plate and 13mm bolts both broke!!

  1. #1
    Join Date
    Oct 2005
    Posts
    88

    Default Urgent help!!! installing subframe plate and 13mm bolts both broke!!

    so yeah easy install...not...damn quebec

    alright so as i said i was unbolting the subframe plate to install the derlin plate and bot 13mm bolts snapped, i let them sit in penetrating oil for a good hour and still no help!!

    am i stuck drilling both them out and tapping or welding the plate back in

    any help aprecitated !!

    thanks

  2. #2
    Join Date
    Feb 2006
    Location
    Oldham, England
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    Default

    Quote Originally Posted by wyze
    so yeah easy install...not...damn quebec

    alright so as i said i was unbolting the subframe plate to install the derlin plate and bot 13mm bolts snapped, i let them sit in penetrating oil for a good hour and still no help!!

    am i stuck drilling both them out and tapping or welding the plate back in

    any help aprecitated !!

    thanks
    I'd be drilling a hole and trying a stud extractor. But carefully. Break the tip of one of those and you will need some good drills to get it out again. If that doesnt work or the threads in the hole are shot, tap new ones. Doing same job soon so will be aware of possible problem

  3. #3
    Join Date
    Oct 2005
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    88

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    yeah stud extractor a no go tore the **** out of the bolt, gonna drill it tonight after i get some needed sleep


    and rebuild the tranny/reinstall tranny damn 4hp22, lol
    found that i'm also missing a stator pump bolt which explains why i kept losing tranny fluid but no leak at home, faking p/o pos

    thanks!!

  4. #4
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    Apr 2006
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    Chicago, Il. U.S.A.
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    Just drill 'em out. Forget the extractor, those $#&@#*s are rusted solid. If you've ever tried to drill a broken extractor you won't forget it.
    You might get lucky while drilling if right on center with a drill just smaller than the bolt and have the remains break free of the threads enough to work out the now hollow bolt.
    "The gas pedal wouldn't go to the floor if it weren't meant to be there"

  5. #5
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    Jan 2007
    Location
    San Jose, CA
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    This isn't something you could heat up with a torch, is it?

  6. #6
    Join Date
    Dec 2003
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    Eastern Tennessee USi
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    14,781

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    totally sux but i want a video
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  7. #7
    Join Date
    Oct 2005
    Posts
    88

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    yeah so drilled them out and tapped them to a m10x1.25 for something a little stronger, lol

    thanks again!

    you want a video of me torching my car? lol
    ain't gonna happen anytime soon, hopefully

  8. #8
    Join Date
    Jul 2006
    Location
    Twin Cities, Minnesota
    Posts
    71

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    A two for one solution is to weld a nut onto the stubborn bolt. The heat of the welding will loosen the bolt and obviously you will have a new blued head on the bolt.

    A friend has a bolt from a Caterpillar D6 that was broken an inch and a half into the hole (didn't find out how that was done?) anyway a ninja welder welded around the interior of the hole without touching the sides all the way to the top and then welded a nut on the end. Amazing to see that much welded up material on the rest of the nut. I'd guess that it was a one inch coarse thread bolt.

    Going a size bigger is often necessary as most drill the broken bolt out off center or bounce the drill around the hole enough to cut it oversize.

    Glad you got the bolts out.

    Cheers,

    Ned

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