Hey everyone thanks for your comments and giving feedback. I no longer have this car I gave it away many years ago.

Protect this man at all cost, the world needs more like him... Peace and love to all ✌️

good review.. I'm not sure why everyone is judging this man so hard. thanks I saved money because of this video.

I've used JB weld for years. I've successively used JB weld to repair leaking fuel tanks and cracked oil pans. JB weld is good stuff. However, it's all about preparation. Use carb cleaner or acetone, paint thinner, or gasoline to clean your work surface. Sand and sand some more to rough up the surface so the JB weld will attach and stay attached. After you have cleaned the surface with some cleaner, ie: gas, carb cleaner, acetone, paint thinner, or whatever, then clean it again. Point being is to make sure the surface is super clean. Grinding a v-groove at the crack is a good idea, but not always necessary. When applying the JB weld, make sure you're penetrating the crack really well. It's not going to hurt anything to get some down inside the exhaust manifold. And always, always apply the JB weld to the WHOLE crack, from end to end. None of the crack should still be visible when you are done applying it.

Thanks for the honest full review for those of us trying to learn to do stuff ourselves. Nicely done.

"I use this cotter pin to mix it" After 2 sec: "It's probably better not to use a cotter pin" 😆 Great video dude ✌

There are two types of cracks to deal with: 1. A simple crack that does not split the entire manifold or even half of the manifold. 2. A cracked manifold where heat expansion will cause any compound to split - welding needed or replace the manifold.

You haven't given anyone false hope for providing an honest review, it might work on pinholes and tiny cracks but for a full crack right through like yours I think you would need a tonne of it which would probably cost more than a new manifold

I ordered this product and am still waiting for it to arrive. In the mean time I had some regular JB quick weld on hand, so I used that on an exhaust pipe leak between my drivers and passenger seat. 700 miles later I crawled under the car with a bottle of windex and sprayed the repair area, while I had a hose hooked to the exhaust of my shop vac to pressurize the exhaust system. No leaks like before. Amazing JB quick weld held up on an exhaust pipe, since it is only rated for 450 degrees. I'm sure an exhaust manifold gets much hotter than the exhaust pipe though.

Thanks Welking - Thanks for taking the time. This is how we learn. More importantly, this is how we learn to decipher the thousands of 'products' we have out there. Was thinking about this sorta fix (in a quest to save $$$) - but i suppose because of your experience, ill take a different route. Peace out Brother.

Thank you for the video. I had the exact same results. Got to replace the manifold at the end.

0:44 the sound of the electronic zoom on his handheld device was stimulating lol

This is exactly what I was looking for, thank you

This guy is truly awesome

I would definitely buy tickets for your stand up comedy show, if you had one!! You're a natural!

He seems very kind. I liked this video and I was curious about the jb weld high heat epoxy 😊

A new manifold is the only dependable solution . Thanks for taking the time , to demonstrate , it's no good . People appreciate your unique personality,, you're awesome , dont change . When you judge somebody , someone else is judging you .

I need some jb weld, I'm cracking up 🤣🤣😂🤯😊

My man, just put jb weld on the crack😄! You are the cutest squeeky guy on KZfaq! You need to have a channel on KZfaq where someone follows you around all day! I would watch this!

Thanks for sharing this with us.

Ha! i frikken love your video! you r hilarious and super real bro...keep making them and i will keep watchin'em. i learned a lot from this. keep it up. srsp

You tried it but no good. Contact the company to get a refund on their crappy product. Your video was good and let people know about this product. Thank you Welking for taking the time to make video.

Video: "It didn't really work" Commenters: "Thanks, I can't wait to try it myself!"

I used a q-tip to mix and apply. Worked pretty good.

I love the way he is never not moving

Thank you sir for a good honest review of what could happen using this product. Keep well, regards from Ireland ☘️👍

If you tape a vacuum on the end of your exhaust and turn it on while applying the filler, it will help pull the filler into the crack deeper for a better seal

Man I laughed hard because you are damm funny, I busted at gut when I saw the crack. At the same time I love that you posted this even-though it did not work. Many will only post here because it makes them look good; I’m actually one of these guys. Your a role model man! Keep sharing.

Bro your standing sway walk is elite tier bro 🔥 swaggin

Great video bro, don’t listen to anybody making fun. Good review.

This needs to go viral.

lol these videos keep getting better. thanks man.. lolol

Good video I’m going to do that to my manifold right now. Thanks.

Thanks for your video, and your honesty,you have help me save money! Iam going to try Muffler weld!

I love real videos with real results. Great job

Some experts recommend getting the crack a little bit wider and shoving the JB Weld down inside through the crack which the directions indicate

I am very happy you just saved me on the job I was going to use the jb weld thank you very much jb weld is junk something to use if you are a thief and just want to make a quick sale selling your junk, that’s all JB Weld is worth thank you very much for the info. Excellent video.

Well, it was worth a shot before spending a bunch of money. Thanks for the video!

Hot car. Love the boost gauge without the boost.

If you read the instructions, it tells you to open the crack/hole to almost 1/8 so it can penetrate and seal. Otherwise, this was quite painful to watch. I have to say, the cleanliness and organization of his garage is impressive....

Good video man keep making them much love

Exact same car and crack in exhaust manifold. Used JB extreme heat as well. Same failure in under 1000 miles. I even used a grinder to clean up and prepare the surface. just reapplied it. Takes 5 minutes. But, the crack is growing slightly.

Love this guy!! Subscribing myself!! Much Love!!

I like your accent, makes you sound very kind😊

Great informative video. Thank you.

What an incredibly anticlimactic ending that was absolutely perfect.... Such a good comedy video.....

Great video bro, thanks for the tip

Thank you for the review!

I can appreciate the extra salsa dance steps on the side, great moves

Might have worked better with a few layers of fine wire mesh like a bug screen. Apply with an acid brush. Thanks for giving us all a little chuckle !! 😁

This was weird as hell but Cool I guess lol. Dude was hella funny, glad he showed us jb weld extreme heat dont work. Just subscribed

My 99 civic lx has a crack in the exact same location. Im going to try this out. Thanks for the video.

I agree. Dremel tool acetone perhaps, and disposable gloves to contour the surfaces

I wonder if it would work better if you followed the instructions for larger holes. They advise buttering a piece of fiberglass matt and laying it buttered-side down over the hole, and then buttering the upper side. The fiberglass would reinforce the paste.

Headers / exhaust manifolds had the most extreme heat and pressure. Selling it is a case by case situation. Same person can do it and have it work on one car and not another. No guarantees. I would try sanding the loose rust off and leaving it where it looks a little discolored and not so smooth. Sometimes this works a little better as these type of sealers get better grip on the pores . I do this on the mufflers and down stream cats. As they are a little cooler. Usually works good unless its a large repair. Sanding to the point of shiney metal doesn't give you a great grip as people may think. A body guy wouldn't prime over shiney metal. It needs to be dull. You can try to dull it with a very fine sandpaper. 600 grit and up. But, if its a crack then you really need to try and force it into the crack first, then when it cures a layer over the area and perhaps another layer but, spread over past the area previously done. That way it is trying to wrap around the area a little. Much like gripping with your hand over an area as to putting your finger over it. Nothing really will fix these types of cracks like welding. But, its worth a shot

well, its official. i have now seen everything on youtube.

Same thing happened to my XJ manifold. Used JB Weld and about the same time period is what it took the JB Weld to FALL off of mine lol Ended up just changing it out

Thank you for saving me money 💪🙏 keep it up. Thank you.

Great video brother

I like this guy, he's funny

thanks for showing this video on how the typical crack of a 90s Honda Civic cannot really be repaired but hopefully it will be enough so you can pass inspection. just remove the shield on my 98 Honda Civic with 170000 miles original catalytic converter with California emissions. I have the same crack in the front of the O2 sensor and also the back that goes all the way down to the cat. I just need enough of the crack to be blocked so at higher RPMs air doesn't get sucked in to the manifold triggering the O2 sensor and running rich. check engine light catalytic converter efficiency code both O2 sensors fairly new. I reinforce the area with a washer on top of the J-B Weld along with some wire Twisted in a Criss-Cross pattern.. letting it dry now we'll see how it is on Sunday..

The crack may have deeper into the metal of the manifold. You only applied the JB to the outside of the manifold. The JB was a temporary fix. Manifold replacement would be a permanent fix. In California, you will not pass a smog with an exhaust leak. Thanks for the video!

This guy is brilliant 🤙🙌

When he showed the cotter pins he used I burst out laughing, lol

Yeah my muffler on my motorcycle was leaking around both ends, i used one container of this, i applied it in small layers letting it cure before applying the next layer. Then i let everything cure for over 24hrs. Holding up great so far. The instructions also say to really push the jb weld into the cracks and build up several layers. You may have done that but it didnt look like it

Sometimes you have to try anyway. You never know, it might just work. It was good experience and now you have a little more knowledge on what to do with a grinder and a drill for prep work by some of the constructive comments before you add the JB Weld if you ever run into this again. Original crack was too far gone. When stuff like this cracks it's probably a known issue by that point and worth buying the new manifold because problem was probably corrected. A good example is the Chevy Trailblazer and Envoy manifold. The new ones allow for some flexibility.

Too much pressure in that part of the manifold plus the engine mountings are probably shot so its flexing. Good vid. Thanks!

The job pays 20 hrs weld at the dealership 6000. Good deal 30$fix better then new, runs lot quieter now even fixed the 🧵 threads

This jb weld works better if you grind the crack about 1/8" & then 1 coat of jb weld 1/16" thin, and before it dry Add 1 or 2 small pcs of steel screen to reinforce the crack, [ the screen you r going to use, its the same all the windows screen have] after it drys add 1 more coat of jb weld, But I recomend to weld it or replace the part

I just used regular JB weld to put the handle on my new grill, poorly made, couldn't get both screws in at once (Char Broil table top) hole alignment was off, so I bought the JB weld and the next size smaller screws, put JB in the hole sockets, coated the screws, then coated all the exterior parts for a solid fit, I doubt if I'll get over 300F, see if it holds...

Good review and test. Would love to hear from dudes at JB Weld.

Duplicated this on a cracked manifold. On mine, it cracked during cooldown after a long drive. Fortunately that long drive resulted in an emissions pass😁. Seems like the material becomes elastic upon heating, resulting in a bubbling up. It probably thins out resulting in cracking when the temp changes. For me it worked in a pinch to stay on the road, but count on a new manifold shortly after.

Great video !

Nice video! You know you could have paused it at any time while filming to use the restroom. Lol

I had to give this a "thumbs up", just because lololololol... Seriously though, would love if this dude was my neighbor!

Directions say enlarge crack to 1/8 inch. You didnt read the directions! O2 sensor install could crack it again too!

Somebody give this guy a Oscar

I tried the same product on my 91 Corolla, had the same result. Back to square 1

Its re-cracking because of the vibration of the two broken pieces ....try the JB weld putty that can be applied as a more thicker application to keep both sides firm

Jb weld is a very good product. However the vibration from the motor may have contributed to the cracking of the repaired area. Try the exaust header wrap thats used on motorcycle pipe s that should really help out. Good vid thx for sharing.

Honestly didn't think it would work, but thank you for the review. Now I know 100%.👍

Mechanic and a natural comedian funny little dude lol 😀

Maybe put heat sensor in and then weld Heat expands when hot and shrinks when cold. leave it in and let cool down and appl the JB weld

Lol. Step by step instructions probably better than I can do. I will give it a try in a sec and give my personal review.

Great video helped me

That sucks. Thanks for the warning.

I was half expecting an origami brush when he pulled out the paper.

Great video, thanx!

„I need a brush“ 😂🤷🏽‍♂️

I've had success with jb weld around the manifold of my Mitsubishi Lancer Had an air leak due to blown gasket I didn't want to have to replace the gasket as I really don't have the time anymore to spend time on repairing what I done was applied a fine amount around the headers to the block and let it set for 10 hours, 8 months later it's still bonding great no cracks at all, I think it's best to apply this stuff fine, no applying in big chunks just apply it over the crack and wipe away the excess whilst pushing into the crack

Beautiful civic!

Great video

I hear some kind of noise like predator is there next to you

I had an old 1990 Dodge van that had a cracked exhaust manifold, split down the middle like you have. Best thing to do is spend the money and buy a new one. About the JB Weld Extreme Hear putty. I would have pulled the manifold and clean the actual crack surfaces first. Don't forget there has been carbon from the exhaust blowing through the crack leaving impurities on the surface of the crack. Just applying the putty on the outside of the two split pieces is like putting wood glue on the surface of two pieces of dirty wood, it won't hold. I don't know how good or bad JB Weld is but I had a buddy that bought an old service station hydraulic lift for cars. It was used and had a dent in the lift piston. To make a long story short, he used JB Weld to fill in the dent and then filed and sanded it then installed the lift in his garage floor and it worked perfect for many years.

I tried jb weld and it doesn’t work,,, I ended going to a muffler shop and have the manifold welded. It passed smog. My Honda has 353000 and still going strong ,,,, happy miles ahead!!!!!!!

I like this guy regardless

Good review.

Regarding what some commentators say about cleaning the surfaces all the way to silver metal color I'm asking how come that the putty didn't flake or came off anywhere ? Obviously it adhered well which means the preparation he did was good enough. Now let's talk about the 2nd crack. Was it on top of the original one or in a different location? If the latter, it means adhesion of the putty to metal is fine but is lacking strength to hold itself. Obviously the manifold suffered a dilation and the putty could NOT resist it. Lesson? Expand the original crack to 3-4 times wider, of course make sure all traces of dust are gone, fill the new opening with a glass-fiber piece of fabric and put some putty on the fabric before you force it into the crack. Now smear the area with the putty but in 2-3 hands each as thin as possible waiting to cure before each application. I can guarantee you it will hold all the way to 300 thousand miles.

No it don’t work on my 22re headers exhaust, but now I must figure how to get it off the header exhaust nuts and bolts that I covered. I created more work on my disassembly. I putting new exhaust on if can get the JB weld off.

This could have worked if you add some fiver glass to the patch; cloth or loose fiber. make sure to saturate the cloth or fiber with the JB.