Years ago my dad threw a rod in his 18 wheeler. It knocked a chunk out of the block but it wasn't in the water jacket. He took JB Weld (regular) and glued the piece of block back in. I said it would never hold but he ran it for almost three years. Amazing..

@hvguy

9 ай бұрын

The 2 part KB weld is absolutely amazing.

Regular JB can take up to 500 degrees.If your block gets hotter than that you have bigger problems than a hole in the block.

@jordananderson8299

2 жыл бұрын

I used the regular JB weld to hold a 4-wheeler's intake manifold on. It only lasted 3 days before it broke apart but the engine never gets to 500 degrees

I used this to fill in a Cavity. 4 years chewing and its Held up Great . Dentist wanted $268. Edit : 5 years now . Going srong. Just a mild headache with static energy from time to time.

@anilrehmatullah7906

5 жыл бұрын

I kinda dont doubt it.

@Wastekidd50000

5 жыл бұрын

😂😂

@MotorcycleMouse

4 жыл бұрын

Lol as a medic this is the most grunt shit I’ve ever heard

@ventwilliams3352

4 жыл бұрын

Lol 😂

@nickbrockelman

4 жыл бұрын

I have used JB weld steelstick epoxy putty stick to fill my cavities in my teeth. IT WORKS GREAT. They make a hydraulic version thats even white. The key is in the preparation you have to make sure your tooth is very clean and that there's no chance for bacteria living in the cavities to be alive which means peroxide and soaking in alcohol . you don't want to seal the bacteria up inside the tooth where it will just create pressure and causes pain. If you do it correctly it absolutely will hold for years. The other thing you need to take into account is your bite down after you put it in your tooth you must make sure you could bite down to create room for your teeth or it will be painful after curing

That stuff works fine, the thing is you put way to much on it. You're supposed to drain the oil out of the engine if it even comes out slightly the JB weld won't cure properly..just put enough to fill in the crack and let it cure for about 2 days. Until it's really hard, I noticed it wasn't even fully Hardended when you touched it.

So. You need an engine. The $10 container of jb weld didnt fix your problem. So you call it garbage. Not really fair

@dreamsdocumtru81

5 жыл бұрын

That stuff works great not the putty but the 500 degrees weld 5023 psi works it has to be don’t correctly and let it cure for 24 hours for a engine I would let it stand for 48 hours I repaired lots of engines and if don’t write it will last for ever.

@chase-db9jo

4 жыл бұрын

Are you guys insinuating this idiot is a moron? I think you guys are jumping the gun for the mere fact the block doesn't look like it was really prepped. Combined with the fact he made a whole video on a cold weld and never bothered to tape the most crucial part. By that I mean the prep "and" the actual application of the product. I dont know about you, but he sounds credible enough. So, note to self: jb weld ex. heat is garbage. Thanks again dummy. I take great comfort knowing that if i do decide to try it and I forget how to use it i will refer back to this video and the step by step detailed walk through of exactly the steps you took and how you came to your rock solid conclusion. Again, well done sir.

@chrisalanwarren

4 жыл бұрын

@@chase-db9jo I like the part when he starts with I welded my cast iron block with stainless rod and it didnt work, it cracked again....lmao.... yeah hes smart

@hvguy

4 жыл бұрын

@@chrisalanwarren if you knew anything about cast iron you would be a bit quicker to point out preheat etc. 304 and 316 are useful alloys for welding cast. But your entitled to your own opinion, even though your wrong.

@coreywilson3418

4 жыл бұрын

I have a 350 vortec with a cracked block can any one tell me how to properly jb weld it to last it's just a woods toy not really worried if it leaks a little

A long while back, we used the Marine Weld to fill a corrosion hole between the exhaust and water jacket in a 6HP Evinrude. The block is cast aluminum. Ran the motor hundreds of hours. Made sure the area was clean using acetone, and was properly prepped, reamed the hole to about 3/16" and cleaned of corrosion to bare metal. Let it cure for a couple days. Ran the motor probably a couple hundred hours. Sold it and the new owner is still running it.

My first truck was a 70's chevy luv with a crack in the block. My dad and our neighbor who was a pilot chiseled chunks around the crack and let j-b weld set for a couple days. This was done in 1994 and the owner of the truck still drives it.

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.

@hvguy

3 жыл бұрын

Hard to beat the good old stuff

Most tests I’ve seen with jb weld the original seems to be the best

I have used it for all kinds of repairs.Love the stuff

Not sure about the title: it's garbage for your specific application, but it's good for many other applications for which it is very helpful.

@drippingwax

5 жыл бұрын

For example?

@drippingwax

4 жыл бұрын

@Quirin I put it on my exhaust manifold and it cracked when it dried. By the way, as far as I can tell, this is just furnace cement.

@Clare.1985

3 жыл бұрын

@@drippingwax than you didn't do your part of prep work.

ROFLMAO - Organic "Oh great!". Got to love that reaction....LOL

thats cast iron,u can braze it with a nickel rod.its extremely hard to weld cast metals.and grind a notch for full penetration.

@hvguy

7 жыл бұрын

i was going to braze it, however, directly behind the weld is a cylinder sleeve with brand new O-rings. I didnt want to risk damaging the seal and filling the crank with water and oil.

@michaelws6247

6 жыл бұрын

Yea brazen seems about the only way. Sucks you’d basically have to rip it down bare to do it but.... do it once, do it right. Plus you could get a better look and make sure everything else is golden. Any updates on this yet?

I remember repairing my manual transmission oil leak using the regular J-B weld. It holds very well. (Knocking on wood)

@hvguy

7 жыл бұрын

ruizhernandeztrust I almost considered good ol trusty jb weld... But figured if I paid more for a product, it'll be more gooder.... This was not the case 😂

@ryoamora8655

6 жыл бұрын

Gooder, is that even a word? Or did you mean goober? Lmao

@anunentitledmotivatedmille7731

6 жыл бұрын

Ryo Amora wtf is goober even a word?

We used to solder cracks in the blocks on the old cars. Soldering will not work on a mounting point like engine mount but will repair a crack from overheating.

Your video shows the problem was the mechanic and not the product. JB Extreme should never be used were it comes into contact with water. This dissolve when it comes in contact with water. Should of used J-B weld twin tubes (8265S)

I would of used the regular 2-part jb weld. I have used it to fix cracks in engine block and can take high temperatures.

@jordananderson8299

2 жыл бұрын

I used the regular JB weld to hold a 4-wheeler's intake manifold on. It only lasted 3 days before it broke apart but the engine never gets to 500 degrees

Did you primer the spot after you removed all of the paint and rust ? or did you just go "no prep"?

... did you cleaned the grease and rust BEFORE use J.B. weld , with ACID ?? ( Cannot exist any strange particles in the welding areas , especially greases and oils ).

I have a head gasket leak from the cylinder to the outside (puffing air under the exhaust manifold). Do you think I could get a temporary fix using JB Weld?

@hvguy

4 жыл бұрын

Hell no lol. Pull the head. It's easy

I noticed that you had 15 lbs pressure on the cooling system, i don't know how old your case is but most of the older systems and likely the later ones as well don't need a pressurized system you should be able to run your case with no radiator cap at all, i could be mistaken this is just my experience.

Someone help me. I need to attach a piece of metal that fell off of my aluminum case on my YZ250. Would Jb weld’s heat special paste do the trick?

@hvguy

5 жыл бұрын

Yes, as long as it doesn't have much pressure or torque. Clean well, sand, clean, clean, clean, apply, hold in place. Done

I used MARINE TEX on this exact situation in three different scenarios over the years. One boat, one crawler and a truck. All worked perfectly.

@jordananderson8299

2 жыл бұрын

But it's more expensive

In South Africa we have an epoxy called Steenvas, it's designed to fix broken engine blocks.

I used regular JB weld and had basically the same results maybe it was because I only waited 20hrs to cure but the JB weld stress cracked as soon as I needed it to work...

Have you tried wating for it to dry and then heat it with a torch?

@ricktomlinson5481

4 жыл бұрын

Howdy Mr. Table, Have you used this product? Heating may speed up the cure time.

this guy is hilarious! what jb weld did you go with in the end and did it work??

@hvguy

7 жыл бұрын

XTR3MEBASS15 I ended up with jb marine. it still leaked a little. my friend suggested pulling a vacuum on the block to suck the epoxy into the crack. but that was after I sold it.

@CarMake

7 жыл бұрын

Looked up the specs for marine weld, nearly 4000psi tensile stength is pretty decent. I have a hole between the exhaust port and coolant jacket of a petrol engine. (I've tried tig but its too narrow to get in there and I can't get the cylinder head hot enough to braze it, damn thing is designed to be a massive heat sink!) So my last resort is some kind of epoxy. what would you recommend?

@hvguy

7 жыл бұрын

XTR3MEBASS15 there is a company out there and"im not gonna look it up" but they make epoxy that's specific for fixing blocks. Google around, I believe they use some sort of orange lid or container. Pretty good shit. I believe cummins even supplies it for repairs.

@cwatson42785

6 жыл бұрын

Hvguy Next time you need to get the steel stick which is like a stick of putty that has the hardener in the core of it, you kneed it till it becomes one color and it will dry as hard as steel in 5 min and fully cured in 1 hour. That stuff gets extremely hard like steel. That stuff would definitely not blow out that easily.

@karkoskirachel5438

5 жыл бұрын

@@cwatson42785 do you know the name of his product? Or any information you can give me so I can Google it? Like what the container looks like or the plastic it comes in? Anything?

You have to let it settle for 24 hours for max effect apparently

you have to heat it to 400 degrees before you apply the jb weld. it will stick like it should.

That is easy enough for a Mig Welder repair. I used JB weld on a Mercruiser Exhaust Manifold with a Water jacket on the other side. It lasted 3 minutes.

I used jb quik weld on my motorized bicycle spark plug it worked for like 2 weeks with almost daily use it rnded up cracking ive just redone it with the original and ik hoping it will hold up a little longer

@hvguy

6 ай бұрын

The original JB weld is far superior 😹

@theLyzhendricks

6 ай бұрын

@@hvguy good to know hope it hold up well

Probably works great on something like exhaust that doesn't get wet.

Same thing with aerosol exhaust paints, they just don't last and as durable as coatings done in the factory. Stuffs similar to these are good only for barbecue stoves and other household heaters, nothing else

Use it on heat application only not meant for pressure

I realised this is an old thread. I have a hole in my sump on a Toyota townis 1992. Would this jb weld be able to fix that Do you think?

@hvguy

Жыл бұрын

Absolutely not. Just clean it real good and use the original 2 part JB weld.

lol, I feel your pain man. having to get that shit off and re do it. I was about to use this on my motorcycle pipes to fix a broken heatshield. glad I watched this first. my pipes get around 800 dgrs so regular jb weld even high heat wont work. what would you recommend for high heat other then this crap.

@floridaforecast

6 жыл бұрын

A welder

I know to use antifreeze in everything and shut shit down when it's overheating . I have seen many cracked blocks and heads over the decades I have been fixing equipment. EVERYONE of them has been because of no antifreeze or overheating. Overheating cracks are almost always in the head or in gas engine cylinder walls block cracks are from not keeping antifreeze in the motor.

Use Hobart Nickel welding rod after you grind out the stainless,

For future people his putty was still wet, press your finger nail 1cm in from the outside edge or the thickest area, it should leave no marks or indents, plus if this was to seal water its always going to have moisture effecting it This is water based so spraying it with water just ruined it o. Your leak test. you cant do this in this application but painting the inside and outside with enamel paint will seal it from water and oils etc making it last even longer. Had dynagrip extreme heat (jb weld bought their formula) last 11 years on a old 16hp briggs engine that threw a conrod, ground down with flapper disc, hit with blowtorch to remove oils, put some tig wire to bridge the large hole (imagine rebar in cement) and went to town dabbing this extreme high heat paste in the same spots filling air pockets Smacked with a hammer as hard as i could, approved it, rebuilt engine and its still there a few months ago when i replaced the the oilsplasher.

Instructions unclear, have to pee really bad now for 4 days.

@hvguy

3 ай бұрын

Rip 🫠

We drove a car 10 miles to the mechanic. After sticking a pipe in a Broken off. Metal water hose connector on the intake manifold. It got to the mechanics 💯. For a more permanent repair. So it works

Welded it with stainless rod so I just needed to get something over to ???? Hold water ? Wat exactly did you say ? You just need to get something ???

This stuff works.

Depends on application small cracks, has to be clean, dry, and proper temperature. Will buy you time for a replacement part to become available especially a used one.

I use original weld stick, its a great product....

Flame braze, TIG with aluminum/bronze wire or ni-rod stick would be the way to fix it or use a series of interlocking studs that are for cracked cylinder head repair, if it's thick enough you also could have put a series of interlocking 1/8 NPT plug along the crack as well. kzread.info/dash/bejne/gqVk2ciOZL3He84.html

what i have successfully done many times fist i got a jig that drills hole that are spaced you drill a pilot hole at the end of the crack then use the jig to drill two more holes and drill holes so far apart with the jig intill you get to the end of the crack you tap the holes and then countersink the holes. apply red loctite then screw in the pins that will twist off . grind them flush then drill in between the pins with the jig and do the same then after you are don i use standard JB weld to hide the repair. the system can be obtained from www.locknstitch.com. i always do the liquid glass treatment in the radiator. afterwards run it a few days with straight water then rain and refill with antifreeze

READ THE INSTRUCTIONS.

You should have used regular JBW for this- it's good up to 550F, is stronger, and bonds better. I get good results when plugging large holes by embedding glass cloth in it for added strength and helps bridge large gaps faster.

@seeya205

Жыл бұрын

This is good for 1100 degress

Did you do the fingernail test? Like it says on the instructions? To me that looked like it wasn't quite cured. It takes on a more matte look when it's cured that looked a bit glossy. You have to stick your fingernail in it and if you can leave a mark or indentation then it's not ready

@hvguy

2 ай бұрын

Yup. Solid as a rock. Just didn't stick

Your spose to cure it with high heat for about an hour , maybe 200 c, the liquid powder rises to the surface and you can wire brush it off, whats left is the fused metal powder grit thats diamond hard, extreme heat is for things like exhaust manifolds , furnace molds etc where there is enough heat to cure, exhaust mufflers etc are too cold, you would need a flame to cure, down side of this stuff is very little contact bond strength and brittle so need very rough surface, mix it with jb marine weld and acetone to stop it turning to clumps clumps might work

@lonestarkennels4117

7 жыл бұрын

s s what can I use on an engine?

@ryoamora8655

6 жыл бұрын

Spose? Lol

The original JB Weld works much better! It needs 24 to 36 hrs to cure ,the longer you wait the better the repair

@parrisestatessouthernhomec3246

3 жыл бұрын

Yulp

I used the jb weld putty and it didn't stop a small transmission leak. Re did everything and got the almighty Jb weld epoxy went back on the road! 10k miles later and going.

@svetipetar278

4 жыл бұрын

SirCavemaninthewest Same here tried to fix oil leak and didn’t work. By the way is that JB weld epoxy original JB weld that comes with 2 small tubes and have to be mixed together?

@SirCavemaninthewest

4 жыл бұрын

@@svetipetar278Yes. I used the JB weld original RED & BLACK tubes. Also a stainless steel brush and brake cleaner spray can are a must have. I sandwiched the epoxy with aluminum foil so it doesn't sag or bulge. You can sand the epoxy if you want to add more layers to it. The Aluminum foil can be peaked off when it all cures.

@svetipetar278

4 жыл бұрын

SirCavemaninthewest Thanks

U know u need to mix it up very well right?

This item is for cast iron manifold repair. You needed to use the Original 8265. Should have asked first

Jb extreme heat works just fine as long as it's not exposed to lots of water like in the case of a cracked header. It is a 2 part system, usually you have to mix it beforehand.

@hvguy

6 ай бұрын

Mixed thoroughly, let it sit for 24 hours and it was still junk,

Plastic working jb yes or no

Garbage definition * Tried to weld cast iron with stainless steel rods * Tried to weld cast iron without pre-heating block * Chooses the WRONG patch material for the job I understand your frustration, but you cannot deny who really made the mistakes here.....hint: You..

@AdrianMNegreanu

5 жыл бұрын

Welding cast iron gave it all away :))

@hvguy

4 жыл бұрын

@@AdrianMNegreanu a little late to the party here but a quick search will show you welding cast is viable. Using this garbage product on a block is not. 🙃

Dude, you wire brushed it? You gotta really rough it up for that type of use!

@thetigerman

4 жыл бұрын

Looks like he didn't let it fully cure. Which this product is not strong enough for the job he needed.

Did you drain the block before applying this? Most of those JB weld products wont cure where moisture is present.

@hvguy

5 жыл бұрын

Yup, drained

It’s good for engines but don’t use the that stuff use the 500 degrees and the 5033 psi but for a Diesel I wouldn’t use it for and if you going to do it the right way if your able to get inside and take the engine apart double tap both sides from the inside and the outside and when you tested it with the psi it looks like you did not let it cure. It takes 24 hours to cure.

did not work for me with a cracked head pipe on my harley

I just spoke with the techs at JB Weld this week. I asked them about this Extreme heat product and they told me it dissolves if it comes into contact with water - WTF? I think had you used normal JB weld, your repair might have worked out okay. I honestly can't figure out what the purpose of the JB weld extreme heat product is. The website says it can be drilled, sanded, etc. and it's good for all sorts of things. But if you call the company, they will tell you if it comes into contact with any water, it will dissolve. If you check the product on the website, 30-40% of the Q&A is JB weld telling people "that won't work, it will dissolve if it comes into contact with water". What kind of silly product is it? I'd like to know what you could use it on where water isn't a potential risk.

@hvguy

Жыл бұрын

Wtf?!? What kind of bullshit product is this 🤣🤣🤣

@ray5961

Жыл бұрын

@@hvguy My sentiments exactly haha.

That's a old school cooling system. 3-5 psi when at operating temp. I'm not saying JB weld extreme heat is good, because it's absolute trash. It also says to apply and then apply heat, if on exhaust let vehicle run to heat the sealant.

A cast block - cold stitch weld. But that’s a dying art along with those capable of doing it - old school. Personally I’d have cashed the crack, thoroughly cleaned it & then cleaned it again. Then used JB Weld. Whilst waiting for it to cure Id have been look for another engine. I have used it to repair two cracks in the top of my cylinder deck, which is aluminium, on my Suzuki Samurai race truck. It does have the benefit of having the cylinder head to hold it all down though. If you don’t use it properly - don’t call it rubbish.

the original jb tends to work better... i patched the block and my oil pan (which the crank hits alot) in my jeep and its still holding perfectly fine. no cracks or anything.

Should of used flex seal. Phil swift replaced the boat hull on a Jon boat with a screen door and it kept water tight. I hear talk of a new commercial with the screen door, their making a surfboard out of it & surfing the lava waves in Hawaii. Been about 3 weeks though. Can’t imagine what the holdup would be.

@tickyul

5 жыл бұрын

Michael WS6 I personally know Phil Swift........he would kick your guts in if he read your smartassed comments!!!!!!!

@michaelws6247

5 жыл бұрын

tickyul Planting tulips doesn’t mean you know actually “KNOW” him 😉

@michaelws6247

5 жыл бұрын

tickyul awesome, looking fwd to you starting another account and pretending to be a ham sized hulk steroid eating giant.

The high heat stuff is to brittle should have used the steel stick putty it can handle a lot of heat it would have fixed that and it needs a lot of time to cure it looked like that stuff just wasn't cured yet. I fixed a hole caused by a rock in a side case on a XR 200 ran that bike for a decade when I was a kid never leaked again I didn't use the high heat stuff either just steelstik

And cast you have to preheat it to 550º forgot to mention that in the 7018-6010 comment

@hvguy

6 жыл бұрын

Sometimes true, however it is possible to weld it without heating. The trick is not welding too much

Cracked blocks have go through a process called stitching to repair. Engineers in the Farm industry should be able to help you.

Problem is the water has too much pressure and it pushing it outward. No sealant can work under those conditions.

@hvguy

5 жыл бұрын

The radiator cap was off.

The problem you have is that you didn't run the engine to allow the material to heat up and further cure... The material streghtens with heat and any areas exposed afterwards to can further add material.

Used belzona 111 I believe..used in nasa fixed issue😊

You purchased wrong product. High heat that you mix is awesome. Fixed cracked block

looking to patch up a old pit read a few reviews that had the same results as yours so appears this stuff is crap!

Please, don’t say it’s cold in Texas.

Okay.... I can see the replies but the proof of the pudding is in the eating. There's no denying it unless you are going to say this man is lying. It worked ! Made me smile. Well done Hvguy 🙂

@theLyzhendricks

6 ай бұрын

The problem is he used the extreame heat resistant and ut sucks the other stuff is good

Looks like someone slapped this shit on dirty motor and then refused to wait for it to cure

Regular JB weld would do just fine there. No need for the extreme heat type.

Those sticks and extreme heat never work for me. They always break off. The 2 part cold weld steel works great though.

@hvguy

Жыл бұрын

It wasn't even extreme lol,. It didn't even stick. I honestly think the original two-part system would have been a thousand times better

I used a some of this about 6 months ago. Ya right bud, it's absolute garbage. And a complete waste of time and money. I resorted to the original JB Weld. Well done for putting the word out there. Only wish i'd seen it sooner.

That stuff takes anywhere from 24 to 72 hours to completely cure

you need to use the original jb weld its 5000+ psi flexible and safe up to 350f

@hvguy

3 жыл бұрын

Yup. Shit is badass. Check project farm. He did an episode on it

@luisespino6300

3 жыл бұрын

Is that the one with two things of them to mix?

@Friedrich-Wilhelm-1980

3 жыл бұрын

@@luisespino6300 yes

You need to mix it well for about 5 mins or so tell it mushy then put one layer on whatever item then a second one after four hours then if you need a third layer wait another four hours go ahead then let it sit for 24hours let it run with some heat from the machine then you should be good to go

Did it ever work

@hvguy

3 жыл бұрын

Nope. Junk.

Hahaheheha....Getting clowned big time

Know what was garbage? That prep.

i confirm this is garbage, used it on exaust manifold

It didn't work for me. I got it wet and it started dissolving and washing away.

@hvguy

3 жыл бұрын

Yup. Junk

Doesnt say the strength because its for something less than 1"².... like a crack or fracture. Not a 1" x 3" hole😭

regular jb weld likely would have worked fine, that high heat stuff is junk

If its cast iron buy nickle rods and weld it with stick

If you could press your fingernail into it, it wasn't cured. AND, if you welded (braised) the crack with a stainless rod and it didn't hold, how did you expect JB Weld to hold?

@hvguy

4 жыл бұрын

Because JB Weld is a two-part epoxy, and not a heat intensive molten metal device lol

Jb original and let isncure for 48 hours, the 5096 psi

Regular JB weld is where it is man. Clean the surface, put regular jb weld on it, let it sit for 24 hours. Good to go.

@chase-db9jo

4 жыл бұрын

I think I have a better idea. Whatever your holding? Put down. Take a step back, then another, then another, then another, keep that up til you bump into someone smarter than you. Shouldn't take long at all. Your welcome.

@chase-db9jo

4 жыл бұрын

@@cybersylo5786 I wasnt referring to what you were saying. I didnt clarify properly. I actually agree, I haven't found anything better than the original. But the prep is everything. It didnt look like the surface he prepped was ready

You meant to repair both sides and wait for it to actually dry 😅🤦‍♂️

You need need to drill each end of the crack. Then grind the crack into a trench. Then braze it.

@hvguy

Жыл бұрын

Yup. I did

5 years later and mine still holds. You're using it on a tractor and probably did it all wrong. Lol

Well it's not really meant for that

Hey Tonka tracker, wanna get away?