Just wondering if anyone has used this Loctite 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 !
If there is enough meat left on the knob you can drill and tap to a larger size and use a threaded bushing/insert
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.
A Heli-Coil threaded insert is probably the best way, you end up with new very strong threads that will last forever.
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.
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 loctite 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 competition. We blew the entire cylinder part of the "enbloc" crankcase/cylinder casting about 100' in the air
I thought of that, but being bakelite didn't want to risk it.. it has soft brass/bronze insert in it... The threads on it are just worn out and there isn't much meat on that bushing...
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
I guess this method would be OK if you have some JB Weld and didn't want to spend anything. However, the Loc-Tite 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.
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.
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.
The Loctite Form A Thread , will work on anything to fix the treads...Should have the Loctite on Monday... not a parts store or hardware outlet had it locally .. will report back !
I used Loctite 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.
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.
so I received the Form A Thread kit today via UPS.. tonight's fun project.. I will report back once done !
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...
The Loctite 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..
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