I live in palmer alaska and always wonder what our crazy neighbors are up too. I have always looked down on Russian cars but when the government pretty much builds your cars you shouldn't expect greatness. I hope one day our nations will be back on good terms our world is so much better united then fighting with one another.🇺🇸🙏
@@butcherbaker4258 how crazy is what I wrote imagine if every human in the world read what I wrote and understood, technically would change peoples way of thinking if they weren’t already stuck in a shit way. Peace and love to everyone
i did this to my Vespa piston...i had bad pre ignition timing issues and the plug burned a hole through the crown so i used JB Weld on it and sure enough it ran, but within minutes the hole burned right through again
Lol I once drove 30 km from home with a buddy as passenger. I got a loud pop and I noticed throttle response was lower and I needed to keep it alive. It brought us home, died in front of the door. And I found out later a piece of piston 'has left the room' size 5x5 mm on the top outside of a small 70cc 2 stroke piston... lmfao. It brought us home 👍
Drilling the hole up to a standard tap size and putting a bolt in it would certainly be interesting. Should last much longer than filling the hole with adhesives. Still going to need some form of adhesive as thread-locker to prevent the bolt from backing out and to seal the threads though. The first cylinder to fail was almost certainly the baking soda. I was expecting the other two to fail within seconds at load, looks like they lasted a whole lot longer.
What a cool concept. If you screwed the bolt in. Brazed the bolt in from the backside, and ground the head of the bolt level with the piston... Wonder how long it would last? Cheers
@@maxstress8427 Love it! Would love to see how long it would last. Roadkill used to bandaid stuff together like that then take a road trip. Repairs like that interest me. Its incredible how long some of those "bush fix" repairs last. Cheers!!
Back in the eighties, I burned a hole in the crown of my Vespa's piston. So on the roadside I removed the cylinder and piston then I used Araldite to fix a 2 pence piece to the underside of the crown, waited for it to cure and then filled and smoothed the hole atop the crown with more Araldite, put it all back together and I got several hundred miles out of the blessed thing until the glue gave out on the 2p and the 2p coin dropped into the crank and smashed everything up inside.
I once welded a cast iron piston that had a valve stem go straight through the top of piston .and weighed /balanced it after welding . Don't forget to pre-heat the piston before welding
I know at least the super glue will release with heat for sure. I use it to hold small 2 stroke cylinder jugs onto a mandrel to cut the bases a few thousandths to raise compression on chainsaws. Just a small amount of heat that jug slips right off. JB Weld I've had mixed results with heat on different things. EDIT: I really did think they'd come apart a few seconds after startup. Lasted way longer than I thought. Lol
There is special high temp JB weld and if you work very clean, very clean surface it should hold up some :-) maybe pressure on a piston hole is also too high to work
@@kitecattestecke2303 They make a 2 part putty called Steel Weld and I guarantee it would hold up to this for as long as the engine lasted. It gets hot when mix it and after it cures it is as strong as steel for certain. You can hold a blowtorch on it for as long as you want and it wont melt. You can tap it, even make bolts out of it. Yeah I said *create bolts out of putty* lol
first class stuff as always there is never a dull minute with u guys with fun in mind . so much better than the negativity that corrupts the rest of the world, blessings to u all .
Such crazy brilliance! You guys are incredible and I love watching all the insane things you guys come up with. Thank you for thinking outside the box. Can't wait to see what's next
When I was about 10 I had used JB weld to glue a nickel to the cement floor of our basement. My dad tried to pick it up and failed (obviously 😆) so he got a hammer and chisel to remove it, but the JB weld didn't let go, the nickel took up a chunk of cement when it was pried off 😆 and from then on I knew it was seriously tough stuff.
Project farm cut a hole in a cylinder head and JB welded it up, and it actually worked. Not sure how long for, mind you. I repaired an outboard cylinder head with it, about 2 years ago now, it's still going today
Since you welded a piston,i would really like to see you adding welded material on the pistons as much as possible to get maximum compression and see how much power it will gain
👌😂👍that poor Lada has been through hell and back! You guy’s been trying to kill it for a long time now with all your crazy experiments! And still going strong!😂👍
So some context, the piston head experiences the peak highest pressure of 2100psi on every single stroke, it also experinces the most amount of heat being the closest to the explosion in order to do it's job. So while it failed to repair a piston head, the block itself would be fine with JB weld, having experienced a fraction of the heat and concussive peak pressure that the piston takes. As the piston travels down and expanse the pressure rapidly drops meaning the walls of the cylinder would be able to handle the jb just fine.
Thanks for doing this product testing. I was thinking of using JB in a different application on a small engine - ie. for threads stripped threads, but it seems it might have a short hold time in that application as well.
Try using JBWeld Extreme to glue a coin to patch over the hole. Coins are tough. Obviously it depends on valve clearance. You might even get a performance boost from the increased compression LOL.
A challenge for you? Take your knackered engine, fit it with four square cylinder sleeves, and make four square pistons to fit the cylinders, then drive the thing? Are you up to the challenge?!
@@SwapBlogRU you guys are the only ones who could make it work. My thinking is, cnc machined for perfect seal joined surfaces, two piece L shaped ' rings ', slide them in and carefully weld them together in place on the piston. Since there's no compression sleeve for these rings you might could liquid nitrogen freeze them to shrink them enough to install them. 🤔
Predictions: The cyanoacrylate "super glue" will prove too brittle, shattering in service. The epoxy will get gummy with heat and peel out. I have used JB Weld and it has proven very fit for the purposes I put it to, but those purposes have not included using it in a combustion chamber. I think, on zero evidence, that it'll work for a little while before it fails. I expect the welded piston will still be working well after the other three have failed.
You have good welder ;) that's why TIG welding resisted! Could be interesting to do the same test with different technologies of welding (MMA, TIG, etc...)
I do a bit of work on geo trackers and they're known for developing cracks in their aluminum blocks between the cylinder sleeves. A girl thought she had a blown head gasket but when I pulled the head I found cracks between 1&2 and 3&4. My initial thought was pull it and replaced it but i've had so much luck with jb weld and we had nothing to lose so I patched it with jb weld and put it back together. That was a year ago and she's still running it.
Pull all 4 of the rods and pistons out and see how far you can drive on just the starter motor. electric car ! Try it on one battery, then try it with a bunch of batteries.
Jb weld isn't good with heat. We tried to quick fix our exhaust with it and the smoke and smell was aweful 😅 it held though just took weeks to stop burning off
It may sound counterintuitive, but pistons actually don’t get as hot as the exhaust. They see very brief peaks of high temperatures, but the pistons probably have a metal temp of less than 250deg F since they are cooled by the oil and cylinder walls and intake air/fuel mixture to some extent. The exhaust only gets cooled by the air passing over it, so it gets much hotter.
another suggestion? how to fix? buy a new piston, they are cheap to buy, compared to all the work welding up and machine it to fit again But ok, it was a nice experiment. Why? JB weld is good ok, but if used, take care, and maybe only for non stressed erea's or parts. It has been used for altering inletports of modified cylinderheads, but even this is not as good as welding up the ports wich i did.
Maybe try ceramic epoxy. The same that is used on spark plug insulators and other high voltage or high heat applications. Or make pistons out of the epoxy!
Ceramic coatings have been done forever with good results, but a fully ceramic slug? I dont know that I've ever seen it. Skirt design might be interesting.
I once knew of a guy riding his 50cc scooter to the BrassMonkey motorbike rally and he developed a hole in his piston, a local farmer welded a coin to the piston and that enabled him to attend the rally. Howsabout fitting hydraulic motors to each wheel and adapt a hydraulic pump to the engine to run the motors?. Or adapt an electric motor to each wheel and adapt a way to power them from a battery with the engine charging the battery.....
That's what they used. That's what JB weld is. Metallic two part epoxy putty... but it's not strong enough to hold the force of an explosion in a compression chamber.
@@soldjahboy not the putty I’m talking about. JB weld is liquid form. The stuff I am talking about isn’t. The one I am talking about is called “speed stick “ instant putty, it is a substance similar to radiator and fuel tank repair that you knead together, then press it into place. You can cut threads in the stuff once it’s set.
@@christophermarshall5765 The JB Weld I've used is exactly what you're describing. I've never seen liquid JB weld before. The stuff I buy is in two solid sticks and you break a bit off each one and kneed it together. I think it's called JB weld steelstick.
@@soldjahboy the JB weld they used in this video is in 2 part epoxy liquid form. The stuff I described is what I used to fix radiators & steel fuel tanks. It is in a single strip, that you break off, & knead it until it turns grey. The steel stick I also described is not made by JB weld. Their products are 2 part epoxy adhesives.
I typically fix burn holes in a piston with a new or used piston! It’s just too much work experimenting with other types of repairs. I guess if you have a rare and hard to find piston , welding would be the only other option!
Maybe you're not aware of this, but these guys try all kinds of crazy stuff just for the hell of it. Most of it is never intended to last, more or less just to see what will happen.
