I graduated from high school in 1969 and went on wheat harvest that summer. I was hired as a truck driver. My truck was a 1955 Chevy 2 ton grain truck with a dump bed and a swapped in 350. We started in Oklahoma cutting wheat in Oklahoma, Kansas, Nebraska, North and South Dakota. The truck pulled a trailer with the combine on it with the harvest head in the bed of the truck. By the time we got to South Dakota, the truck could barely make it up a hill. In Fort Randall, SD, the boss and one of the other men pulled a head off the truck and repaired a cracked block between two cylinders with JB Weld. We continued on the harvest through North and South Dakota and returned home in south central Nebraska with the truck and repair intact. I've been a fan since I was 18.

My wife hates that I found this channel. “What’s that, honey? I was watching someone cut apart a perfectly good motor and glue it back together”

I put JB Weld on a 350 Chevy block that was cracked, that engine ran for years like that. Good shit!

I had a '70 Maverick that had blown out part of the exhaust manifold gasket. It was very loud. The manifold bolts were hopelessly rusted, and I didn't have shop access... but I did have JB Weld. I filled the gap in and let it sit overnight, and the next afternoon I fired it up and it sounded nice and quiet like it was supposed to. It held and worked perfectly fine like that for a couple of years, then I ended up selling the car (I told the buyer). She never had it fixed, and it was fine like that for another 8 years. In that time, she had the muffler replaced, but the manifold joint was solid as a rock.

JB Weld saved my marriage. Update. I am now divorced. No joke. Maybe I was having a premonition. :(

No, you may not borrow my lawn mower.

Excellent demonstration! My very first time using JB Weld was out of necessity. My very first car in 1978 was a 63 Rambler classic and it ran amazing, near bullet proof. However it had a hole in the bottom of the gas tank. ⛽️ The owner of the gas station I worked for suggested trying JB weld. We emptied the gas tank, properly prepped the exterior and did the repair, and it held up great. Six months later I traded that Rambler with my best friend who had a 65 Chevy Nova. Later he gave the Rambler to his sister, who used and abused it. 4 years later just before she sold it, I had the opportunity to check it out and that JB weld repair was still in place and holding, no joke! That experience made me a lifetime customer and I've used it on many projects over the years, because it works!

When I was a young (and dumb) kid, my friend and I took my moms car without permission, and drove it to the county fair. On the way home, I ran over something in the road, and it punctured the gas tank. Fortunately it was a little higher than halfway up the side of the tank. Frantically trying to save my secret, I repaired the gas tank with JB Weld, and for the remaining 5 years Mom had the car, it never leaked. I did eventually tell Mom what I had done, but I waited long enough to have my own home, so I wouldn’t get grounded, again. 🙄

Your videos are the best. Very informative and factual. Thank you. Here is my JB weld story. It was 1978 and I flushed out the radiator in my 56 Chevy with a 235 6 cylinder in it. I just used water and like a 17 year old kid didn't put antifreeze in it yet. Well it got down to about 15 degrees Fahrenheit the next night. The engine block had a big crack going horizontally about 5 inches long on the passenger side of the block. Well I drained the radiator, cleaned it off really well and heated it up with a drop light. I talked to my high school auto shop teacher and he said try JB Weld since you have nothing to loose. To my surprise after appling JB Weld I had zero antifreeze leaks out of the block! It saved a broke high school from having to buy another block. I am sold on it.

😂 the amount of shit this lawn mower goes through

You’re so knowledgeable and a very humble guy. I enjoy watching and learning from you. Keep up the great work!!

I'm surprised it held up against the piston slapping it. I know the stuff is good at handling heat, but it's fairly brittle and doesn't like hard impacts. Usually a hard impact will cause it to crack and bust off. Very impressive test results.

I have used JB weld to fix a crack in a cast-iron engine block. Worked great. I also used JB to fix a small hole in copper tubing on the high pressure side of an AC unit. Both applications worked fine. When using JB Weld, make sure your area to "Weld" is totally clean & dry. I use rubbing alcohol to clean.

When I was in scouting, we had about 20 aluminum canoes, everyone of them had at least one patch of JB Weld. The stuff always worked great.

Used JB weld on a cracked noisy exhaust manifold on a 1972 350 chevy ran for a long time with no problems and quiet as a little church mouse. Good Stuff. Saved me over 100 dollars on a broken bracket on my dash temp control on my motorhome. thanks for the great videos.

I finally know what engine knocks sound like after watching a guy testing glue on his lawn mower. Thanks UKposts, great stuff.

We had a 8in. Crack down the length of the engine block in our boat (inline 6 cylinder) we used wire mesh and jb weld. 7 years later, it's still running strong.(as well as a american engine from the 70's can anyway)

The fact that the Piston was hitting the excess J-B Weld is even more impressive because it was putting an excess pressure that would not normally have been there

I used JB weld to repair a shallow well water pump I use out doors to pump water for my garden, pump froze in the fall one year and cracked the cast housing, fixed with JB weld and holding together still years later. Great video.

I have used JB weld to repair the end of a sway bar on a 99 Buick century. The sway bar ends tend to split overtime resulting in the need to buy a new sway bar. I used JB weld to attach the end back on and it was stronger than when it was broken with the links attached.

I had a tree branch hit the cooling fan on my tractor damaging the radiator. The radiator needs to come off and laid flat but jb weld did a very good and neat repair. It is still going strong after 2 years. New radiator for the tractor was going to be $ 750.00. JB weld less than 10 bucks. JB Weld radiator repair ... works good!

Amazing to come to one of your older videos and see how much your techniques have improved over the years. I enjoy how proficient you've become at tearing down, cleaning, and reassembling lawn mower engines.

1994, put a dime size hole in my xr600 dirt bike engine case after crashing into a boulder. Drained oil, degreased thoroughly, and fixed it for the rest of bikes life.

JB Weld saved us one hell of a tow bill on a motor home years ago near Yuma Arizona. We obviously had an object from the highway puncture the oil pan. Luckily it was 99 degrees at midnight. The stuff worked beautifully on a hole about the size of a quarter in the oil pan. We made it to our destination and we're able to locate a new oil pan. So glad it happened when it was a cool 99f and not the 121 high the next morning. Thanks for showing us what works and maybe more importantly what products do not.

Neighbor from hell, don't leave your mowers unattended. lol

You should test how different mix-ratios of the JB weld affects the strength. Like 50/50 of the steel to the hardener, 60/40, etc. I’ve always added slightly more hardener to heavier duty applications and it hasn’t let me down yet

I have never found a better product than JB Weld for this type of application. Your experiment reminded me of a landlord I once had--a professional outboard mechanic--who used JB Weld to repair cylinder walls. He used similar technique to yours, but machined the wall smooth with a hone. I don't remember him using it to repair a head, but he may have done that as well. Very impressive video!

Love this product even more! Thank you for all the rigorous testing and mockups. You put serious effort into each of your videos. No sponsors -just honest facts. My only request is more farm-a-bego!

One night I was driving north on I-75 in Dallas in between the Forest& Coit exits and I fell asleep at the wheel. I abruptly awoke on two wheels after hitting the center barrier wall, so I quickly put it back down on all 4 wheels and continued on my way! I promptly exited 635 west. All appeared wells I continued west.between Perston and Midway the temp started to go up rapidly so I pulled over. No damage to the perimeter of the car, but underneath the aluminum oil pan had a gash in it about 8 or 9 inches long and it had ripped out the drain plug Bolt. so I cleaned the gash well, applied a good heavy beed of JB weld, bought a slightly larger course thread Bolt for 60 cents retapped it and let it cure 24-36 hrs and drove it around like that for over a year with no problems. I'm a believer in the power of JB weld!

It's amazing to see how much your videos have progressed over the years... You've more than earned every sub you have! Thank you Project Farm!

In my opinion, I'm glad that you did NOT grind or sand the JB Weld off. That makes this a more valid, every day use test. That just shows the strength. What goes on, stays on....good job as always..

Used JB weld to fix a groove on crank shaft of Tecumseh snow blower 5 hp. Oil seal wore out/damaged crank. No leaks 3 years. Then thru rod. Thank you your experiments are always helpful!

“Massage it into the crack.”

im so glad i stumbled upon this channel. very interesting and straight forward.

Ik you read most of your comments but chances are you won’t see this but I just wanted to let you know your content has to be the most interesting and reliable content ever!!!

My 89 Camaro with a 305 had a crack that pushed part of the block out and separated it, it wouldn't hold coolant but still ran amazing. I just put my second coat of jb weld on yesterday and I have yet to test it, but I have much more confidence now! Thanks brother for an awesome channel and true testing videos

I was traveling from California to North Carolina in 1992 and my Chevy Nova radiator spring a huge leak. My car left me stranded going through the final leg in the Appalachian mountain range. I tried several products and the only one that kept it together was the JB weld until I got to my new place. I love their product!

Maybe this experience will help someone who is stuck? Many years ago, I had a college kid for a tenant who worked a night job as a security guard. His funds were VERY tight. He developed a leak in the metal fuel tank of his chevy sedan. So here we go, flat of my back on a cold winter evening under an old chevy. We hit the leak with rough wet and dry paper and put a nice fat self-tapping screw into the "spot." We mixed and applied an epoxy putty product rated for fuel tank repair, smoothing out the product to cover several square inches in addition to the screw head. Once I was positive the leak was stopped, we placed a bare light bulb under the repair to speed up the curing process and kept an eye on it for ant sign of a leak. In a few hours, my college student went off to work and had no more trouble with his vechicle. Not the perfect repair I would have liked to perform but it worked until graduation, a year and a half later.

JB Weld saved me from having to spend $500 on a replacement radiator on my Kawasaki Sport Bike. Sealed the leaking hole in the radiator tank perfectly. I've also used it as a sort of body fill on some rusted out sections of the hood of my old Pontiac. This stuff is excellent.

Great video, JB weld is on my list to fix leaking valve cover gasket on a v6 engine....many thanks, project guy i will look for more of your videos

Brother you do amazing work!! utmost respect and gratitude for all the ways you help so many of us.

I have used JB weld for years. I always have it on hand in my workshop. I love the product.

I just used JB Water Weld to repair a pin hole in a copper 1/2" supply into the house from a well pump & expansion tank. No leaks after 10 days... I have kitchen reno coming within the next 90 days. I need it to hold until then... So far so good. Thanks for a great video.

JB Weld is an incredible product. 10 years ago, I used this product to repair a broken pestle from a stone mortar & pestle set. It is still holding up after 10 years of pounding spices! Thanks for a great video putting this product to a rigorous test.

Based on another video of yours, I used it to repair a broken faucet handle cartridge made of hard plastic. It has held up ever since. This required rotational bonding strength. So glad I saw that video. The faucet sat unusable for a year or more, as I didn’t know where to get a replacement or how to fix it. A few dollars and 24 hours did the trick! Thank you sir!

I haven't watched this for a long time, and I must say I'm very impressed with how well JB Weld held up. :)

This has become my favorite channel. You are to be highly commended for your impartiality and attention to detail,Your expression, "I,m Impressed!" can also apply to your subscribers opinions of your performance as well.

I've been watching your videos for years and I can't believe I am just discovering these older great videos now!

I own a jeep cherokee and on the 2000 and 2001 model the heads are known to crack, mine did. I used JB weld to repair the crack and have been running my jeep for over six weeks now with no coolant going into my oil. worked for me! thank you JB.

OMG, love that sigh at 2:10, when you admit to yourself that you just cut a hole in a cylinder head on purpose!!! Keep it up, love it!

Wow! Now this video brought back some memories. I am now 61. When I was roughly 13 a neighbor of mine had a very old riding mower. Cracked the head. Fixed it with JB Weld just like you did. Put it all back together, changed the oil and started it up. Ran great. Roughly 8 years later when I moved away, that damn mower was still going strong. Even though I knew little about engines then, I never would have thought that JB Weld would have worked or for that number of years! Thank you again. Glad I subscribed awhile back.

My wife introduced me to J.B. Weld. it's absolutely amazing. Thank you for the proof!

About 20 years ago, I used JB weld to repair an aluminum intake manifold on a Toyota 4Y engine. The carburetor mounting studs had vibrated loose/wallowed out the threaded holes. Another tech had drilled/helicoiled the holes, but they did so WAY off center. As a result, it had a bad vacuum leak. I removed the studs, pulled out the Helicoils, and used JB Weld to fill in the holes and hold the studs in place. It worked well.

That's pretty awesome! I would have never figured JB weld would have held up in a combustion chamber! My had used it once over 20 years ago on a piece of his 1927 Model T's transmission housing, and it is still there today.

Wow. I've never seen a video of yours that disappointed me in any way whatsoever and I've been a mechanic my entire life. Respect and awe brother. You've earned it.

Another great job! I race a 700 hp. TransAm series Camaro back in the 1990’s. I had an external oil filter and the aluminum housing cracked. I repaired it with J.B. weld. It never leaked! Incredible stuff!!!

I had a crack in my (plastic) intake manifold on my Saturn SW2 that was leaking coolant. I cleaned and buffed the surface around the crack and a piece of pvc, glued the PVC on with JB Weld, and voila, no more leak.

Very impressive. I've used JB on numerous repairs but never thought it could withstand the pressure/temp of a cracked head repair. The only failure I've had with it was with a plastic radiator housing. Keep up the vids- much enjoyed!!

JBWELD IS THE BEST OF ALL . HAVE USED IT PERSONALLY FOR 60 YEARS . NEVER FOUND ANYTHING THAT COMES EVEN CLOSE. LOVE YOUR PROGRAM.

Going to buy one to try repairs on CSM (knitting machine) cam tension. Thanks for the review!

Thanks for this excellent test. It sure helps to have the assurance that if I need to make this kind of repair, JB Weld will be up to the task. Great job! And it's good to know that you're not sponsored by the manufacturer. An honest test!

Wow, you do some great product tests Bro. I was wondering why you didn't sand it down for valve and piston clearance, but yet and still you do great detailed work. Very impressed with JB Weld!

Repaired the brake master cylinder on a '67 International bus that had rusted on the inside and was of course not providing the hydraulic pressure needed, it was leaking by the seals internally. Cleaned the chamber and honed it after drying. Worked a charm, then drove it to Alaska. JB Weld shines best when parts are not available.

I have used JB weld for decades. Best of its type by far. AS usual , your preparations were superb. Well Done!

i posted on your other video about prochem two part epoxy. i will send you some to test if you cant source it. i can all but promise it will outperform jbweld. love your videos buddy keep up the amazing work so informative and forget all those internet haters

Great test! I keep JB Weld in my work shop and use often. I would never believed it would take the heat/stress of a cylinder head. I’ve it for many years and even thinned it with a little denatured alcohol to get into small cracks/fibrous material. Slightly warming w a heat gun makes it flow well and harden faster too.

Great video! I used JB Weld to repair a 1 inch crack in the metal top of the radiator in my old Ford van. I sanded around the crack to rough up the surface, cleaned it really well with acetone, and applied the JB Weld in several thin coats allowing each coat to fully cure before the next was applied. I drove that van for years without another radiator issue!

I glad u have taken your time to test the products I really appreciate the time u take and thank u for doing it it's refreshing

hey, a cheap alternative to repair that darn blown piston on my helicopter! thanks man you saved me like $500!

Wow! Very impressive. I have used JB for years but never to this extreme. Thanks for the cool and educational video.

Great Show, I really enjoy the test(s) you do on home repair / maintenance projects. Look forward to your next experiments. Cheers Gary

Todd, that was a really great test. wonderful work. Thank you.

I really enjoy this channel. You do a lot of interesting and informative work and have influenced some of my buying decisions. Thank you.

JB Weld is indeed awesome stuff. I once used it to repair my oil pan after it was damaged when I ran over curb/median in the road.

Had a rock go through my crankcase on my old xr 80... JB weld fixed it. 20 years later it cannot fix my life though

Always enjoy your presentations and go to your site first with so many questions that arise. Keep up the great work!

Thank you. I was impressed. I didn't even know that it was epoxy at the time. We called it "Liquid Steel". I kept the car 2 more years and ran it hard. No leaks.

Brother ,I've enjoyed your videos. I just recently did a j.b repair on the sidewalk of an 11 vertical shaft briggs motor. The crack accured,do to the pan bolts vibrating loose. What I found is one coat on the crack ,recracked due to engine vibration.. I simply clean the new cracked area,reapplied a little wider coating and it was a success. 👍🏻 thanks again for your videos.!!!

It's amazing how many uses I find for JB Weld. Particularly since I own an aluminum boat! Great stuff!

I patched the plastic edge on my radiator and it lasted for a year before the crack decided to get worse. Also, many years ago I patched a GM 3.4L V6 Cylinder head with it and it ran perfectly until the car was rear ended and totaled. JB Weld FTW!

To span large cracks, use steel wool and JB Weld.

I think I see an upcoming popular UKpostsr, these are entertaining so keep them coming!

JB weld helped make a temporary fix on my cracked front differential housing! Waiting on the replacement housing to show up, but JB weld really doing the job.

I posted on another thread, but it might be useful here: A long while back, we used the JB Marine Weld to fill a corrosion hole between the exhaust and water jacket in a 6HP Evinrude. The block is cast aluminum. Fortunately the hole was acessible under the cover plate. 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.

For short-term emergency situations, this would appear to be an excellent way out of a bad situation, but I'd be curious to see what would happen in the long-term. For example, what about cylinder heads and blocks on regular cars? Two potential issues might be the uniformity of mixture through the thickness and properly machining the JB-Weld to conserve the compression ratio and proper geometry to achieve the correct flame front. Interesting videos you have - food for thought and good reserve for those emergencies.

Hi sir I've been using aroldite for many years and have found it to be a great product it's petrol resistant and heat resistant but it takes twelve hours to dry I'm very impressed by jb weld I will be getting some of this for future repairs many thanks for your video best regards Tony

I appreciate how methodical you are in regards to the way you perform your tests. They really give a great idea as to how a product works and what aspects are best to use them in. As you have noted as well in all your tests every product may have a better use in certain aspects. So you prove it's all what you plan on using the product or products you are demonstrating. Which I myself truly appreciate. Partly because I'm not as mechanically inclined as you kind sir.

Awesome product! Welldone JB Weld and thanks for this video, keep it up.

I used J-B to fix an expansion chamber I bought on E-bay and got stuffed with as it was cracked but I filled the crack with J B weld 5 years ago and its still good, yes I know its not under compression but still shows what can be done, Wouldnt wanna use it on a water cooled head though. But cool test. love the video's.

After you beveled the cut in the head, it looks like the tool made some grind or abrasion marks across the head gasket mating surface. Was that a sealing issue or was it not as deep as it looked? Interesting test and thanks for your work!

Was skeptical about using jb weld on my Yamaha R6 cracked engine block until I saw this video. Thank you very much for this awesome video!!

You’re the only person I trust on UKposts when it comes to reviews on stuff. Just blew a hole in my snowmobile 2stroke motor. I’ll determine if I can fix it this way at the end of the video lol the hole is in the bottom of the crankcase.

jb weld works very well because it stays a bit flex able. While on the road with my semi the mounting ear on the alternator broke off. I used jb weld to fix it and it lasted 5 years before it came off aging. I have also fixed stripped threads in holes by filling it with jb then re drill and tap the hole.

I used JB Weld on my wife's mouth, and I can finally watch You Tube in peace

i've always known that JB Weld was awesome, but was always kinda curious about the "cracked cylinder " repair on the back of the wrapping. thank you for your experiment. it is good to know. I now know that JB Weld is a definite for the Tool Box.

Thats is remarkable. I have actually used JB weld to repair my oil pan i cracked. I accidentally over torqued the corner of the pan near the bell housing, while replacing the pan gasket. Which in my case, the front differential has to be dropped/removed. Instead if spending $60 and spending another whole day on the cold concrete, 5 dollars at walmart, and my truck is still on the road. Does not leak! Even moved to texas from minnesota, and I’ve been here 10 months. Still holding!

time to find a heavy duty hydraulic hose and really get this jb weld tested to it's limits

What I like about your series is your consistent methods of analysis, methods you improve with each new video. Best of all is your summary at the end, in which you review your test(s) for accuracy and validity, as well as improvements you could make. Although I began watching your series with mild skepticism, you clearly merit the interest of every DIY buff. Just imagine the money you have saved the DIY demographic across the country-- not to mention keeping the DIY products marketers on their toes, and marginally more honest. * On a minor note, are you in any way reimbursed or otherwise influenced by the "Amazon Influencer" program? What leads me to ask is your video in which you mixed 10 different oils of similar viscosity, comparing the results with Amazon Basics oil. It might have a simple explanation-- Amazon Basics is simply a non-descript, basic oil to use as a baseline for comparison, nothing more.

Completely impressed ! Had no idea JB Weld was such a durable product. Knew of its versatility, as I've used it on things like plastic repair/welding of automotive products (fan shroud, A/C housings/firewall repair, dash cluster housing, carburetor repair for cracked or uneven/warped mating surfaces, or adding extended vents for racing, etc.) and many other household "fixes." I recall when it came out in the late 60s and how no one believed any of its claims. Times and experience have changed many a mind.

Thanks for another great video. JB weld has always been my go-to product for over 20 years. Applied correctly initially, JB weld has never disappointed.