Opinions on JB Weld

Peter J

Peter J

Well-known member
Anyone used JB Weld on any high wear parts. I've got a few break rods that have turned egg shaped and was going try to plug them and drill out back to round. Also I put a little on my break roller tracks to smooth them out after I welded them. Any thoughts and/or opinions?
Pete
 
Like it or not, JB weld is just glue (a rather low grade epoxy) mixed with a clay filler. The thought of using it on ANY critical app, like brake parts, is scary. How much wear resistance do you think plastic and clay will have? You didn't even question the extremely low compressive strength. Roller tracks? Ha Ha.
 
I would consider using JB Weld or similar for perhaps patching an exterior freeze-crack in a water jacket, or the like, but not to try to make a load-bearing structural repair or to build-up a wear surface, especially on something like brake rods / cams / tracks.
 
Why not plug the brake rod holes with a steel rod then drill out a new hole? Or weld the old hole shut the re-drill a new hole. Or enlarge the old hole and use oversize pins. Or enlarge the hole and use a tight fitting metal bushing. Or braze the hole shut and re-drill. Or .....

Bob
 
I second what Mike has written, that's scary! I had thoughts about JB weld on
my floor pan in the rear of my 28 roadster, it has about 6 pin holes after cleaning, any thoughts?

Dudley
 
I have used JB weld on nonstressed parts and have built up old pot metal parts with it. We have used it to build up a scored area on the deck of an engine and that has held, probably held in place by the head gasket. It will not seal against high octane Av gasoline, but will with ordinary gasoline. This has been my experience. I agree with the others regarding brake rods
 
I was thinking along the same line as you guys. No problems going with new rods, it was just a thought. I've used it for some patches etc. which is probably the best use of the product.
Pete
 
JB Weld does not have any structural strengh and will not work for this application. You can drill out to a larger size and install the oversized pins or braze up the hole and redrill to the correct round size.
 
Much better product than jb weld (liquid steal) it comes in a tube and is bllack on the inside silver on outside its a two part epoxy past with wthats about 85 % steal shaveings iv used in on all typs of thginbgs to plug holes in watter jackets to filling in an 1/8" crack between the first and second cylander of my 78 carlson glastron aswell as some scores in the cylender walls. untill last seummer she ran like se was new ( my farther took her out for the weekend and ran her out of oil)
 
I rebuild the clevis's by using a steel tubing. I drill out the clevis holes and insert the tubing and silver solder it in place grind down all 4 sides, inner and outer and redrill the correct hole for the Clevis pin. This is not a place to use adhesives altho I am abig fan of JB in the correct application :)
Ken:D
 
You must log in or register to reply here.
Back
Top