I had a leak in an expensive trailer rim (not at the bead surface) and seem to have sealed it with J-B Weld on the advice of a friend. He thinks the stuff is great but I'm wondering if it will take the tough environment inside a rim. Any thoughts or other applications? I have most of it left.

 

In certain applications it works pretty good. Inside a trailer rim might work pretty good as long as the surface was prepped pretty good. I have some on a small leak in my oilpan and it has been holding for nearly a year now.......

 

Works great use it for lots of stuff, even have it sealing a crack in the side of a tractor block. If applied and prepped right as said it will surprise you how strong it is.

 

Oh boy!

This i going to be a fun thread if people start posting everything they have used good old JB for.

I used it to repair a broken exhasut manifold on a 4 cylinder inboard/outboard boat once. It held for quite a while and then I ground it off and started again.

It can be a useful bandaid for sure, hand stuff for some things but no it is not a miracl and I wouldn't consider anything doped up with JB to ne "Fixed".

It might work just fine on your trailer rim.

Have you thought about just putting a tube in?

 

I JB welded a radiator on my first crotch rocket (pinhole from a rock on the interstate) and it still holds to this day. I got to work and saw a stream of radiator fluid squirting 8ft in front of the bike, balled up teflon tape got me home with a little leaking but JB was the ticket and it beats $450 for a new one.

 

I ran into a semi tractor mechanic who used it for some damage repair when resleaving engines during an inframe.
I've used it for other minor repair. It works good.
But I believe that it's not a permant fix.
Over time and with any flex, it may fail .

 

I had a Cop-price with an oil pan that had been repaired with JB Weld by a PO. So when the radiator sprung a leak I figured a little more JB Weld would be just the thing. Worked for several years, was still holding when I sold the car.

 

My best JB Weld repair was to make a new bearing bore for my Kawi 1000 Transmission output shaft. It had spun and wallowed it out easily 1/16". Being broke back in my college days, I couldn't afford new cases, and it was my most economical transportation ( not to mention it was hard to date with your other transportation being a 66 chevy pickup....)

Smathered it on the rough bores and a new bearing, put her back together, and waited a couple of days, was still holding strong when I sold here many years later!

And I beat that thing like a redheaded stepchild, the original reason for screwing up the bearing was I pulled the chain in two on a holeshot.

Gawd i miss that bike.

 

i used it to patch a pin hole leaking coolant on the inside of a cylinder wall on a 401CID ford Diesel tractor. pushed it in and ran a hone in the cylinder before it set and never has a issues since and its been 9 years

 

i love the stuff! just be careful with the quick drying stuff or whatever it is, i stick to the old stuff let it dry for 24 hours. i used it on a cover for my dirtbike a rock or something took a chunk out of it, me and my dad got it set up using some metal to make a mould filled in the hole let it dry over night and we havent had a leak since!

 

Well it must be pretty good ….it paid for a real nice ranch just outside of Sulfur Springs Texas.
No kidding it is good I’m just not sure about putting it on a wheel .

 

I just used it to repair a huge crack on the water manifold for my pool heater. Being cast iron I didn't think it would work, but it does

 

i repaired two cracks on the stock aluminum wheels on my truck, this is after having two different journymen welders have a go at it,[cracked again within a month] and every rim repair shop telling me these rims are not fixable because they will just crack again, JBs held over a year of serious abuse

 

I had the rod let go in the 8-hp Kohler engine on my Troy-built tiller and it knocked a hole in the side of the block. I got a new rod and piston, hammered the broken bits flat and fitted them back, J-B'ed the whole mess together and let it cure. 13 years later and it's still running perfect.

 

Oh yea, I forgot JB Weld holds my timing case together on Greenie....... No major leaks yet!