FIX stripped bolt hole threads the POOR MANS WAY

What torque values can you expect? READ BELOW.

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 A 5/16"(8mm) bolt torqued to 5ftlbs is going to supply approximately 1000 pounds of clamping force. 10ftbs will yield roughly 2000 pounds of clamping force.

Torque Values:
JB WELD standard 24hr cure
5/16-18 bolt with 1/2" of engaged threads.
Testing in video and again off camera all came back with similar or even better results if the holes had some old threads left.
NO THREADS AT ALL
10.1ftlbs
8.1ftlbs
7.8ftlbs
SOME OLD REMAINING THREADS
12.4ftlbs

TENSILE STRENGTH: ability of a material to resist having itself pulled apart. This test would be a 1 inch square long bar that is pulled at both ends until it breaks.
Quiksteel: 5960psi
JB WELD Original: 3960psi
JB KWIK: 3127psi

SHEAR STRENGTH: Probably the most important aspect. Ability to resist being sheared off a surface. This essentially tests it's ability to stick to a surface. This test would consist of two 1 inch wide metal bars that overlap each other in the center by 1 inch. 1 square inch at any thickness would connect the two rods and they would be pulled apart. This is the shear strength.
Quiksteel: 710psi(assume steel and less for aluminum)
JB WELD Original: 1040psi Steel at room temp & approx 700psi Aluminum at room temp
JB KWIK: 1040psi Steel at room temp & approx 700psi Aluminum at room temp

HEAT it can operate under:
Quiksteel: 500F continuous
JB WELD Original: 400F continuous
JB KWIK: 200F continuous

This is a great product and I have used it for nearly 20years. It is more for building up/constructing surfaces and has one of the highest continuous heat ratings. I have used it to seal leaking metal gas tanks many times and it is excellent. This application didn't work as I wasn't able to push and wedge it into an open ended hole.

I use this mainly for low strength situations where I need the epoxy to set up fast but be thin/wet while applying. It is weaker than the original JB Weld but still has good strength.

[jongonegone]

many people dont know that jb weld normal formula after seting 72 hours to cure is 2× as strong as 24hrs seting. at 70 degrees air temp. jb-weld makes its strongest formula called jb-marine weld 2parts also but at 48hrs set time its much stronger than jb-weld original. if you test jb-weld marine formula and let it set for a full 5 days untouched at 70 degrees air temp its 3× stronger than original jb-weld. the marine formula can withstand constant temps well into the mid 300 degree range. nice video good day.

[Incaensio]

Video production is getting great Moe. I remember when I was watching videos on a little 12 inch by 24 inch section of cleared off work bench. Now look how clean and organized and professional the garage is! Great editing and lots of work showing on the end product!

[HardwayRanch]

We used J-B Weld to glue in a stripped spark plug. It would hold for about six months of daily driving. We learned to keep the J-B in the car for a fast roadside repair. Drove the car like that for many years until sold... with the repair kit...

[oldretireddude]

Great product. Back in the early '80s I patched the lower half of the gas tank on a car and drove it for more than a year with no sign of any leaking.

[Patrick-cx]

Had a 82' Honda 500XL rebuilt motor job at a local bike shop where I live -- months later oil was leaking outta the head, I slowly took it apart only to find out the S.O.B used a cheap heli-coil cuz he stripped it out himself . I took it someplace else and the fix was high end threaded SS inserts, worked amazingly. Having said that, the previous bike shop is no long in business ( l rarely get lucky taking shortcuts)

[brucewilliams]

Really appreciate the effort to test these methods. It's nice to have real data before SHTF. Thanks!

[padraicmcguire]

I find using aluminum brazing rod works best. I use Blue Demon Triple Play rods and a Mapp gas torch. Heat the base metal, flux the hole and fill it up with the rod. Center punch, drill and tap. Just like new.

The trouble with epoxy is going to be durability. Thermal cycling will cause the jb weld threads to debond

[pedro-pofi]

Trust you to show us something I have never thought off or heard off .Interested to see it work .

[wxfield]

Vaseline also works well as a release agent with JBWeld.. Just FYI.

[whoolph]

Great video . . . I used a kit I believe from Permatex few years back to restore threads on a head bolt stud on my Model A . . . . It worked well enough to torque the head to spec. Took me a few trys, each time giving it more cure time. Success was after 2 days curing! . . . . Shop looks good . . . . Ginger has endless energy . . . . . . Rog

[ExtraSync]

How did you do the jb weld threads? Did you fill the hole up all the way? Then put the waxed bolt in? Or was it just enough jbweld to cover the sides and then stick the bolt in?

[benmudn]

I've used your copper wire method before with success. One reason I won't use JB Weld is it does not like heat cycles. Even under low heat, low pressure, it quickly disintegrates.

[clasic]

I used JBWeld to fix stripped threads on a riding lawn mower motor mounting bolt several years ago and it’s still holding. It’s location would have required total removal of the motor. I’ve not needed to remove the bolt so I can’t comment on the quality of the threads, but the “fix” is is still holding so I’m not going to poke at it.

[RobbsHomemadeLife]

Don't know how I missed this one, thanks Moe, going to go watch the copper one now.

[ryanjones]

Loctite 3967. I keep a set of that in my tool box. Basically the same thing but it’s made for repairing threads like this. I’ve had great success with it.

[bartfox]

Great video! The shop is looking great . It's about time for a tour !!

[trumps-a-hoe]

It may take an extra step or so but trust me, putting a stronger thread insert in a soft aluminum case is the best thing you can do. The fastener will hold better with the stronger threads especially under higher torque values without failure. But in a pinch the jb weld looks like it can get ya home.

[mikelewis]

Some good ideas - tried the copper wired trick and couldn't get it to work - ended up just buying an SAE bolt (to replace a metric one) and that worked.

[leegraves]

Permatex used to make a thread repair kit much like this. It was a 2 part epoxy with a release agent to coat the bolt with. I remember using it about 30 years ago and it worked pretty good.

[whatsupdocchemdog]

My wife's uncle used JB Weld to seal a cracked block on his outboard motor and it worked great...Thays when I realized how great JB Weld is.