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Technical Loctite Form A Thread # 28654

Discussion in 'The Hokey Ass Message Board' started by rob-redm, Oct 5, 2018.

  1. rob-redm
    Joined: Nov 15, 2005
    Posts: 6,565

    rob-redm
    Member

    Just wondering if anyone has used this Loc***e Form a thread # 28654. watching a repair on ***T*b*
    the other night.. Looked like pretty slick product, have something I want to fix(shift knob).. threads are pretty much worn out.. Thank you !
     
    chryslerfan55 likes this.
  2. Paul
    Joined: Aug 29, 2002
    Posts: 16,971

    Paul
    Editor

    If there is enough meat left on the knob you can drill and tap to a larger size and use a threaded bushing/insert
     
    Rich S., nunattax and chryslerfan55 like this.
  3. tubman
    Joined: May 16, 2007
    Posts: 8,247

    tubman
    ALLIANCE MEMBER

    Years ago I had a SBC aluminum manifold where one of the thermostat housing bolt holes was stripped. I used this stuff to fix it and it seemed to work. I got it just tight enough so it wouldn't leak and then went just a tiny bit more. I never had trouble with it again. It may be that the careful tightening of the fastener had more to do with it, but my problem was solved.
     
  4. Joliet Jake
    Joined: Dec 6, 2007
    Posts: 544

    Joliet Jake
    Member
    from Jax, FL

    A Heli-Coil threaded insert is probably the best way, you end up with new very strong threads that will last forever.
     
  5. ClarkH
    Joined: Jul 21, 2010
    Posts: 1,573

    ClarkH
    ALLIANCE MEMBER

    Being it's a shift knob, why not try it? Worst case, it fails and you're drilling it out anyway. Manifolds and such, not sure I'd roll the dice, although it seems to have worked out for tubman.
     
  6. dirty old man
    Joined: Feb 2, 2008
    Posts: 8,910

    dirty old man
    Member Emeritus

    My son used to race go karts on dirt tracks. We had a heavily modified B&S engine that a head bolt stripped out in a block that had a lot of work in it. There wasn't enough room to rill oversize for heli-coil or an insert.
    So as a last ditch effort to get by awhile we cleaned out the hole thoroughly and used the loc***e on a stud instead of a bolt, let it cure about triple the required time and then installed the head.
    It held until several races later when we tipped the nitro can just a wee bit too much due to some new and fast compe***ion. We blew the entire cylinder part of the "enbloc" crankcase/cylinder casting about 100' in the air:eek::(
     
    302GMC and Legends47 like this.
  7. rob-redm
    Joined: Nov 15, 2005
    Posts: 6,565

    rob-redm
    Member

    I thought of that, but being bakelite didn't want to risk it.. it has soft br***/bronze insert in it... The threads on it are just worn out and there isn't much meat on that bushing...
     
  8. vintage6t
    Joined: Jul 30, 2007
    Posts: 431

    vintage6t
    Member
    from CT

    I'd lighty fill the threads with jb-weld and then re-tap/chase the original threads after it dries.
    Might leave enough "new" material on the threads to be able to tighten properly.

    Sent from my SM-G950U using The H.A.M.B. mobile app
     
  9. tubman
    Joined: May 16, 2007
    Posts: 8,247

    tubman
    ALLIANCE MEMBER

    I guess this method would be OK if you have some JB Weld and didn't want to spend anything. However, the Loc-***e product is specifically formulated to do exactly this kind of repair and should work a lot better. As I remember, it came with the "Form-a-Thread" compound as well as a small tube of release agent so you can get it apart after you do the job. IIRC, you use the actual bolt as an internal mold to form the threads, which is why you need the release agent.
     
  10. Paul
    Joined: Aug 29, 2002
    Posts: 16,971

    Paul
    Editor

    Is the loc-***e or jb weld compatible with br***/bronze?
     
  11. blowby
    Joined: Dec 27, 2012
    Posts: 8,664

    blowby
    Member
    from Nicasio Ca

    Used it on a completely stripped out aluminum motorcycle engine side cover screw. British thread, no heli-coil. Took all the screwdriver torque I gave it and held.

    Head bolt, heck no. Shift knob, heck ya.
     
  12. tubman
    Joined: May 16, 2007
    Posts: 8,247

    tubman
    ALLIANCE MEMBER

    I would be very surprised if it wasn't. I would imagine it would say so on the label/packaging if there was a problem.
     
  13. rob-redm
    Joined: Nov 15, 2005
    Posts: 6,565

    rob-redm
    Member

    The Loc***e Form A Thread , will work on anything to fix the treads...Should have the Loc***e on Monday... not a parts store or hardware outlet had it locally .. will report back !
     
    lothiandon1940 and ClarkH like this.
  14. 5brown1
    Joined: Apr 13, 2008
    Posts: 242

    5brown1
    Member

    I used Loc***e Stripped Thread Repair on a timing cover bolt hole about a week ago and it worked great. I just mixed some of the materials together and timed them as they set up so I would know how much time it took. There was no other way to
    repair the thread without removing the radiator, etc.
     
    lothiandon1940 likes this.
  15. bobss396
    Joined: Aug 27, 2008
    Posts: 18,752

    bobss396
    Member

    MSC has something that comes in a clear plastic sleeve. A 2-part mix, knead it together and press it in, let it set up. We did a few practice pieces before using it on a fixture with a bad tapped hole. It drilled and tapped nicely. If it was MY shop I would have used an over-size insert. But we used what we had at the time.
     
  16. rob-redm
    Joined: Nov 15, 2005
    Posts: 6,565

    rob-redm
    Member

    so I received the Form A Thread kit today via UPS.. tonight's fun project.. I will report back once done !
     
  17. rob-redm
    Joined: Nov 15, 2005
    Posts: 6,565

    rob-redm
    Member

    well , seems to work well... says it can be worked with after 30 minutes... But I'm not in a hurry so it will sit overnight... and give it a try on the car after work...
     
    Truck64 likes this.
  18. rob-redm
    Joined: Nov 15, 2005
    Posts: 6,565

    rob-redm
    Member

    The Loc***e Form A Thread worked great... let it cure over night... The shift knob screwed right on... great product to work with... recommend it work a repair for sure..
     
    Paul and ClarkH like this.

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