repairing stripped threads with JB Weld

Emmo · 2005-12-24T06:00:03+00:00

I have stripped out the threads in a 1/4" bolt hole in an aluminum transmission case. I can't get a drill in there to be able to use a heli-coil type of insert, and I have decided to use JB Weld to repair this as the bolt that goes into this stripped hole just locates a bracket which is held on securely by another, larger bolt. I haven't used JB Weld before, but I am confident this is an appropriate situation to try it...I checked out the website where it tells me to clean with acetone, no problem. My question is how to proceed from there, assuming that I want to be able to remove and replace the bolt after it cures.Do I just force the epoxy mix into the hole and then jam the bolt in ? Or should I coat the bolt with oil so the JB Weld doesn't bond to it? I am worried that if I don't do something, when I unbolt the bolt, it might pull the whole wad of epoxy out instead of unscrewing.Thanx for not telling me not to strip out bolt holes in aluminum, I already know that this is a bad thing!__"All it took was all I had..."

Dec 24, 2005 21 Replies

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Andy Dingley 20 years ago

Not in a stripped hole - you'd need some gap filling too.

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Emmo 20 years ago

Well, as my son describes it, I 'Hardy-boyed' it by making a stud, gluing it in with the JB Weld, and putting a nut on it. It is solid enough to hold the end of the bracket in place, all the force is shear, so I expect it to be just fine.

Thanx for all the help!

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