Jb Weld!!!

[Surfsup]

any thoughts on it? experiences? comments and concerns!

thanks.

andy

[280z1975]

Out in west Texas a friend was at his mom's ranch that is WAY out in the middle of no where and is a rocky climb up to the place. He punched a hole in his oil pan of his golf and had a nice little 'knife cut' in it. We jacked it up and plugged the hole with bubblegum and then JB welded over it. It's been on there for about 7 years and around 80,000 miles from what I hear. Overall, it's good stuff, but not to be used in lue of 'real welding'

[Bonzi Lon]

In my opinion it is like duct tape and bailing wire, they all work in a pinch if nothing else is available, but don't expect too much out of any one or all of them.

Or look at it this way; if it is a non essential part, why repair it. If it is an essential part, why not repair it the best way possible or replace it?

Bonzi Lon

[blueovalz]

This is awesome stuf AT NORMAL temperatures. If it is going to be exposed to any appreciable heat, it softens and its bond gets weaker.

[EScanlon]

This is awesome stuf AT NORMAL temperatures. If it is going to be exposed to any appreciable heat, it softens and its bond gets weaker.

I'd like to find out how you come to make this statement.

I first got introduced to it when I needed to repair the threaded flange on a model boat engine that had completely broken off. This is the flange that (one of two) that bolt the muffler/exhaust manifold unit to the side of the Cylinder. I was looking for something that WOULD take high heat (in the case of JB Weld, it states 500°F on the package itself) and be strong enough to accept threading.

I cleaned up the area, then DRILLED and TAPPED the JB and put the motor back into service. I can't tell you how many hours of use it's had since then....but it's still going strong. I don't know in actual numbers how hot it gets, but I know it's hot enough to melt and burn plastic.

Granted, I wouldn't use it in lieu of proper repair methods, but as far as most applications in the engine compartment (aside from direct contact with the exhaust header etc.) I would think it would function quite well.

So could you clarify where you got your information from?

E

[John Coffey]

I use Devcon Titanium Putty for repairs. Good to 350F degrees and is machinable.

http://www.devcon.com/devconfamilyproduct.cfm?familyid=124&catid=34

[John Coffey]

FYI... this JB Weld repair on my intake manifold worked fine for 4 short racing sessions but begain to soften after a long 45 minute track session.

[zbane]

I used a small amount to patch a pinhole puncture in the fuel tank of a Buick I used to own. First I plugged the hole with soap, then patched it. That patch held for 3 years, then slowly started to leak. A quick clean and reapplication kept it sealed until the car was sold several years later.

The stuff is great!

[blueovalz]

Quote:

Originally Posted by blueovalz

This is awesome stuf AT NORMAL temperatures. If it is going to be exposed to any appreciable heat, it softens and its bond gets weaker.

I'd like to find out how you come to make this statement.

I applied the JB to seal two welded tubes used for fuel transfer (more as a sealant around the weld than to bond one tube to the other). The JB was glass hard and well cured when I continued with the project by doing some light welding 12" down the tube. The JB area was warm (but not so warm that I couldn't firmly grasp the tube with my hand) and where I was holding it, I saw where my fingerprints were marring the surface of the JB material. Looking closer, I found I could stick my fingernail slightly into the material and actually pull the material away from the tube. 15 minutes before this, it was hard as a rock and there would have been no way I could have done this. After I let it cool (it was not real hot to begin with), it got hard again.

[Hrududu]

I used a small amount to patch a pinhole puncture in the fuel tank of a Buick I used to own. First I plugged the hole with soap, then patched it. That patch held for 3 years, then slowly started to leak. A quick clean and reapplication kept it sealed until the car was sold several years later.

The stuff is great!

Woah! Deja Vu! I just used some to plug a pinhole in the fuel tank of my Buick! I tried all kinds of fuel tank repair kits and all failed within a day or so. Finally we got the JB Weld to do the job. Using soap to fill the hole was a good idea. Wish I had tried that a lot earlier. It may have helped with some of my other patches.

[superfunk]

A bit off topic, but has everyone owend a buick?

[Surfsup]

thanks .