JB WELD Extreme Heat.Trial and Review. Cracked Exhaust Manifold. 

There was another comment.............Worked good to patch small holes in exhaust. I tried using it in very humid conditions and it kept wanting to drip off from the pipe I was trying to patch. It did not set up in 2 -4 hours like it stated. Maybe I was using too much at one time so I removed a good amount of what I put on (putting it back into the container) and let it sit overnight. The next morning it was set up so I added another layer, and then a final layer the next day. The material still in the container was still workable after two - three days. Actually it was more workable after that time as it was stiffer lit putty and stayed put when applied. I would suggest mixing the product up very well and letting it sit to thicken up before using.

Ron Hind h

Did it come? Have you tried it yet? I'm curious as to how well it works for you.

@@GumptionGarage It was supposed to arrive yesterday, but did not come, so I am going to file a complaint with e-bay and try to get a refund. The only video I could find that the person actually had luck with repairing an exhaust manifold was "Exhaust Manifold Repair THE #1 FIX! CHEAP EASY no tools required". He used exhaust wrap and furnace cement, so that is what I ordered.

That's awesome. Good luck!

What about heating afterwards?

Or just don't buy the 40 dollar one. Haha.

Cool

aren't you supposed to apply while room temperature then heat to activate?

That's all good ideas! Except it was a $40 ebay header.. silver solder probably cost more. I replaced it with a much nicer Megan racing header. Check out my videos for that one.

Even using a Dremel tool can open it up to get it to bond and stick also. Drilling is a great way but good chances of breaking off bit. He didn't apply it correctly us using heat to hurry the dry process, it works pretty fast. I bet by the time he had it all back TOGETHER if done right, then it wood of been harden enough if done right. Its as hard as a WELD. I also filled rot holes in fenders by filling with SPRAY Foam, then skim coat over hole and much better than holes there, then buy matching paint and quick paint and better than rot holes. I dont thing's that i wouldn't want done to me, but I heard of people putting in car door gap so it can't open, pretty rude and fast to do at a store. I've heard of it and Been told they had to use other door to get in, again very rude, I DON'T recommend this to anyone at all. If you DON'T want it done to you, then dont do to others. I laughed for what happened and then hear that, I'm like that's a bit overboard now. Maybe oil on windshield at most so he have to buy cleaner and paper towels. At least no damages done providing they don't drive like that.

@@GumptionGarage would of been nice to know from original post. J.B. Weld works real good if ever needed on stuff. Just clean and prep proper. $5 over $200 if don't have at time.

You saw how I followed the instructions on the muffler part right?.. that still fell apart.

No, I still have most of the tube. It's a lot like rtv. Good for a long time.

Yup, that's why I stopped using them years ago, when I made this video. Did you ever think of that?

Thank you so much.. took long enough.. ha!

High heat wont last 20 minutes, extreme is the only way to go

@@4lifebmx420 wasn't that the extreme heat? Not sure why that didn't work in this case.

I said in the video I had a new one coming in the mail.

I have found that JB WELD makes a good product, overall. This one, in this instance, didn't preform the way I had hoped... But I didn't use it as directed either.. and I super rushed it.. good luck in your future endeavors.

The best product to use for exhaust manifolds (without removing the manifolds) is black furnace cement. Imperial makes it. There are videos of people using it with over 3 years of successful hold.

I can't mines titanium

What about when you are doing a budget dirtbike build and you need to do case repair

Still liking that v8, I'm getting 38 mpg.