Tricky spinning nut on bolt.... | Page 4 | FerrariChat

Tricky spinning nut on bolt....

Discussion in 'Technical Q&A' started by lotusk, Oct 1, 2014.

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  1. finnerty

    finnerty F1 World Champ

    May 18, 2004
    10,406
    Lost in translation......

    still means "automatic nut / fastener" --- and, the term "automatic" is inferred to mean "locking without having to stake" ...... as in the case with a nut which has a built-in locking feature, such as a Nyloc nut --- which these are.
     
  2. finnerty

    finnerty F1 World Champ

    May 18, 2004
    10,406
    Generally, once you completely split one side, you can then spread open the nut enough to just pull it axially off the bolt --- or, depending on the hardness of the material, it will often break into 2 pieces once it is spread far enough.
     
  3. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Thanks

    Will go for it when splitter arrives.
    Get the nut off.
    Get the whole bracket off.

    Will attempt to chase out the threads on the stud

    Bought a split die and tap set just now.

    What can go wrong?
    Really guys

    What can go wrong...i'm hoping i can rotate the die by hand...might not be enough room for the handles that go on the die holder to help rotate...but its a small bolt and very short.
    Should be able to turn it a few times by hand....chase out the threads and...new nut on...and throttle peddle fully on!
     
  4. dm_n_stuff

    dm_n_stuff Four Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2003
    43,886
    26.806311,-81.755805
    Full Name:
    Dave M.
    If it's a nylock nut then why not heat the living **** out of it and melt out the nylon retaining the nut in the first place?

    This is an amateur question, I don't have a nylock nut in front of me to examine to see if that would work.

    D
     
  5. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK
    I think of getting dirty with it like that sometimes but...

    1. Limited room in footwell..not best place for hot flame.
    2. I'm not certain its the nylon thats stopping the nut..might be the stud's threads not catching the nut at the point where the xxxxing nut is sitting.
    3. Good chance of setting my hair on fire.
     
  6. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
    Full Name:
    Tim Keseluk
    No open flames, it won't do anything but permeate the car with "burning plastic" smell.
     
  7. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Dont want that
     
  8. NSXn355

    NSXn355 Rookie

    May 3, 2014
    48
    Northern NY
    Full Name:
    Bill
    If the threads have been stripped off the stud/bolt as you indicated in a earlier post there may not be any material left to "chase" new threads on the stud/bolt. If the nut doesn't "grip" the threads, the die may not either. Your split die may allow you to cut a slightly undersize thread but practice on a spare bolt first to determine how far you can go

    If you can't cut new threads and if you have enough good threads above the damaged area you may be able to stack up some spacers (washers) to clear the damaged area. Hopefully only the bottom 2 or 3 threads have been stripped. Good luck
     
  9. smg2

    smg2 F1 World Champ
    Sponsor

    Apr 1, 2004
    16,468
    Dumpster Fire #31
    Full Name:
    SMG
    I nominate this as the wibble nut thread :D

    what a strange and long web this hath wrought over the captive hexagon of frustration!
     
  10. finnerty

    finnerty F1 World Champ

    May 18, 2004
    10,406
    LOL

    Sometimes it's easier to do a t-belt change than to remove a stubborn, hard to access nut or bolt :) !
     
  11. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,274
    socal
    By now I would have cavemaned it and broke the stud off the car with a giant prybar and just reweld a new one or make a new sheetmetal studed plate for the bell crank and tack weld this new plate into the floor if the access is that bad. Total time including fabrication under an hour.
     
  12. FerrariDublin

    FerrariDublin F1 Rookie

    Jun 14, 2009
    3,457
    Dublin, Ireland
    Full Name:
    Greg
    Nice selection of pry bars you offer Tim. Dangerous for me to see juicy little items like that what, with ebay / Amazon etc only a few clicks away! :)

    OP - Man up and pry that sucker off. Enough already! :D
     
  13. Enzojr

    Enzojr F1 World Champ

    Dec 12, 2013
    14,001
    West of PDX
    Full Name:
    Tomy
    This is entry #88 ...... For 1(one) FRICKIN nut
    Anything over #80 means resort to long forgotten military still set ...... An immediate application of high explosives is in order ....... The car may very well lose some value so make a YouTube video so we can all cheer at the same time, I am thinking one block molder around the whole bracket should do it ....... SCORE
    In reality this is the type of sh*t that happens to me ...... ;)

    Those are definately a "tasty" set of pry bars Tim has, makes me want to hit Harbor Freight ....... I still have stuff from there never opened from my last two trips there.

    P.S. Yea the tack welding might be dangerous, I reserve the right to retract that one ...... And use the explosives.
     
  14. TZ 750

    TZ 750 Formula Junior

    Jul 18, 2009
    912
    Maybe you could just put another nut
    on the protruding bolt and tighten that nut down ?

    Yes, there are insufficient threads for a correct fit.

    When the "outer" nut starts to contact the "inner" nut,
    try placing an open-end wrench on the inner nut,
    and tighten them both.

    The result may be:

    1) The "inner"nut gains a little "capture" on the stripped stud.

    2) The "outer" nut will force the inner nut closer to the bracket and hold well enough.

    3) Easily reversible solution if not successful.

    4) Costs maybe $0.02 for an ordinary nut......
     
  15. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Not pretty Bob

    The mechanism is a thing of beauty...rather not destroy it.
    Cant reweld new stud....cant prybar stud off either..no space and......
    Cant get to bolt head..in box section of unibody
    Advised not to weld in the footwell...near dashboard electrics or something.

    Thanks anyways
    Your way is one way just right now not my way
     
  16. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK


    Tried prying
    Have mini crow bar

    No work
     
  17. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Tried that
    Not enough bolt showing for outer nut to hold.
    I tried resting this nut balancing on the end of the bolt ...it doesnt meet up with the inner bolt to do any good.
     
  18. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Thanks for this info.
    Question please.....

    If the stud which currently accepts a 10mm nut is badly stripped of material is it ok to chase it down or rethread it down to accept a 9 or 8mm nut?
     
  19. finnerty

    finnerty F1 World Champ

    May 18, 2004
    10,406
    #94 finnerty, Oct 3, 2014
    Last edited: Oct 3, 2014
    It is okay to do........ But, without enough access to turn the die with it mounted in a handle, it will be next to impossible to apply enough torque to cut new, reduced diameter threads.

    At this point, given all the trials and difficulties, I would be very motivated to locate the bolt head on the other side of the panel ---- it has to be somewhere, and it is likely accessible to some degree. They would not have installed it on the panel and then boxed it in with other steel panels --- it is much more likely that the bolts were installed after the surrounding panels were fitted..... although Ferrari has been known to do some bassackwards crap :).

    Have you removed the undertray panels in that location ---- it may be hiding the bolt head ?
     
  20. devil boy

    devil boy Karting

    Apr 21, 2014
    97
    Bath, UK
    Once you get the nut off use a hexagon nut die then you can cut a new thread using a socket to hold the die rather than the traditional handled die holder. If you are in the UK, Draper do a set. Part number 79198.
     
  21. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK
    David
    Thanks for the info on turning the die with no handles...i understand.
    All undertrays removed
    That bolt head is inside box sections of the unibody
    No way can it be found without cutting into thick italian unibody steel
    This i think is why it is not listed in the parts book
     
  22. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Bloody good info
    Thanks...will remember that if necessary
     
  23. pnicholasen

    pnicholasen Formula 3

    Jan 14, 2011
    1,364
    South of Philly
    Full Name:
    Paul Nicholasen
    #98 pnicholasen, Oct 3, 2014
    Last edited by a moderator: Sep 7, 2017
    If the nut is spinning, but the bolt/stud is not, can you center-punch the bolt, drill it down to the level of the chassis plate, then drill a smaller hole down further, use a tap to cut threads in that hole, and then use an appropriate size new bolt to hold your bracket down?
    Image Unavailable, Please Login
     
  24. NSXn355

    NSXn355 Rookie

    May 3, 2014
    48
    Northern NY
    Full Name:
    Bill
    "If the stud which currently accepts a 10mm nut is badly stripped of material is it ok to chase it down or rethread it down to accept a 9 or 8mm nut?"

    Yes you could try that but it will be very difficult since the base(root) diameter will not be the correct size and you may not be able to start a smaller die. Depends on how much taper is built into the die. If not, maybe a dremel tool could be used to cut down the end sufficiently so that the die could be started.

    The idea in Post #98 looks like a good one.

    In either case, use some cutting oil as it will make a big difference.
     
  25. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK

    Cutting oil...good tip
     

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