Seller Lied About This Low Compression Dirt Bike
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- เผยแพร่เมื่อ 24 ต.ค. 2023
- I buy a 2001 Yamaha yz125 dirt bike that lost all compression. let's rebuild it. #Yamaha, #Fix, #DirtBike,
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You deserve a medal for your positive attitude. I'd be throwing things
He’s a smart guy that’s for sure.
Ditto ! !
very smart n patient
I made the same comment on the last video when he had to pull the utv all apart again to fix the overheating issue.....he is always zen
same 🤣🤣
This is why I only have air cooled dirtbikes. No water pump, power valves, radiators, extra gaskets and just less things to go wrong and worry about. 1982 yz490 with a 465 top end, 1980 yz250, 1981 it175, 09 zuma yw50. Air cooled 2stroke bikes
Did you notice all the rust in the cooling system and the gears. They were using water and it froze and broke the cylinder. That's why it's welded in the first place.
Cylinder O-ring groove looks like one side was “ melted” by weld . O-rings require support on both sides to seal as they crush and deform to seal . You are correct that you can get it built up by tig welding but then good chance it needs re-machining . Great work on your videos !
Yep. ghetto fix would be the JB weld and shape it sand paper. . Proper way is to have it tig weld and machined flat.
100% ……I was going to suggest that too …….it would work if prepped properly . Cheap for sure . I did a set of KX 250 engine cases on the bottom after a crank failure years ago ….still running years later .
Yeah jb weld and let the o ring do the work while it's still soft. Ghetto as hell but right could get expensive.
Yup! pretty sure thats why its bogging take off too has to be sucking air through there
I was hoping someone mentioned this...also, I'm concerned that the crack that was welded might actually go through the water jacket beyond just the outside of the jug having been cracked, in which case there's no way to seal that back up if the water jacket is weeping directly into the crankcase...he's honestly better off just sourcing another jug and honing it like he did this one...
Those acorn nuts can be a issue if the cylinder studs aren't seated down properly.... add a few washers and see if head stops leaking. As for the cylinder I'd learn to tig weld.
Is the jug cracked/ warped?
Being able to weld is one thing, I have learned. Being able to TIG weld, have the welder, and very occasional need is another.
I like the idea of the washers, the studs could have stretched, if they were over torqued in last rebuild.
Perfect timing, this company meeting is making me fall asleep 😴
🤣🤣I'm watching on one screen while taking an online ethics test
@@thebigguy8306 multitasking 😁
That weld on the cylinder is probably a high spot that is stopping the head from clamping down all the way.
right, why so instead he sands down the head where there is no weld.
I think its time for you to get a motorcycle lift good sir. I finally picked mine up last night after my 9th bike, no idea why I waited so damn long
I need one to just keep putting it off looking at the tusk scissor lift for about 230 bucks just not sure if it will lift my 98 kx250 it says it only lifts 300 pounds
@rockman49er grabbed a used HF one for 200 bucks on marketplace..hard to beat
@ShotgunSsergio what's HF stand for lol what kind of lift is it
@@rockman49er harbor frieght motorcycle lift/table
@@ShotgunSsergio ok thanks
I like how you say "cris cross" pattern when tightening the head nuts and you tighten the nut right next to it. Lol. Super fun watching you get these machines working again.
PUll the cylinder and get a black magic marker, color the top of the outer edge of the cylinder and then use the same glass you used to polish the head and look to see if there is a high spot or a low spot. If it is a high spot, keep the figure 8's going until you have uniform contact. I would nearly bet that you have a high spot on the cylinder where the weld was applied.
The reason it is leaking is the o ring relies on the surface on the inside and the outside to be at the same height to hold pressure.
Came here to say this it looks like there’s a chunk of head missing, if there’s no wall for the sell to push against it will just let it push passed
Put some of the marine epoxy on the head leak. It works on cracked boat motors that were not winterized properly. And it's not flat where they welded it where the head meets the cylinder so the o-ring isn't sealing.
I've never used grease on an air filter. I just sprayed filter oil inside and out and never had an issue with dirt getting by. My favorite filter was Uni.
Tip of the day… When you’re putting on or taking off new grips, stick an air tip under the lip of the grip and blast air while you’re bushing… goes on like butter.
yep and if for some reason the grip wants to slide off spray some hair spray in them and it acts like a glue
Just a tip. Flip your oil bottle 180 degrees and your coolant jug 90 degrees compared to the video and it will eliminate the chugging. Keep up the good work man.
Everytime i watch him poor oil im screaming in my head, "flip it over and itll pour smooth!!!!" Hahaha
Tough break on that cylinder leak. Good on you for showing that not all bikes make money and there are always surprises when purchasing used bikes. Good attitude and hopefully you can break even.
Drill the pin hole out and thread in a set screw with lock tight. That will help with excessive heat on the cylinder.
Was thinking the same thing. Worth a try to save $500 if that's what a cylinder really costs.
Don't forget to fix the fins on the radiator
Joe, All of your videos are really good and informative. This one was one of the best on top end rebuilds. Thanks for all of your efforts on videos. Love the " land " racetrack and woods trails !
Please don't miss 2nd gear in this video!!!!
I don't know if he doesn't understand how the transmission shifts or is he just scared. I don't think he is any good at coordinating a shift.. there are some bikes he will just leave it in one gear and drive it around to keep from having to shift it
The knowledge you have for fixing bikes is insane
New to the channel and love the content. I used to buy and fix up Atv’s about 15 years ago and loved it. This is inspiring me to get back into it again!
I give you props for taking on such basket cases. You will be able to get your money back out of this thing.
I think both leaks on cylinder were caused by the welds
Gotta be a Chinese cylinder.
It sucks that the seller misled you but it’s still a cool bike. Koodos to you for not losing it. I learned a lot from this video, they are great to watch and very informative. Thank you.
Good job Joe, very informative - you make it look easy.
When they welded the cylinder it deformed the aluminum at the sealing surface If you get lucky you might get away with just milling a few thou off the deck or they may have to tig it up a little then deck it but that will still be far less than a new jug. Have them touch up that pinhole as well. If you don't have anyone local try Millennium or U.S. Chrome and there are others.
This guy is the best !
Wish I had him around when I was a kid and had many dirt bikes in the 70's.
What I'm surprised about it the Piston only has 1 ring !
I watch videos on 2 stroke lawn equipment like my Weedwhacker and Leaf Blower.
All the lawn equipment repair people say the reason the cheap 2 stroke Weedwhackers and leaf blowers like the $99 ones don't last long and wear out is because they only use 1 Piston Ring and the higher end ones like Echo and Stihl use 2 rings.
I'm so surprised this bike has 1 ring.
Joe your not shy spending money on your projects I’m the same do it right and don’t cut corners love ya videos nice to watch with a few toastiest and a large cup of tea 👍
Gaskets...what a waste of money...doh! Your perseverance and attitude are commendable.
Next time you change grips try lifting the grip shoulder and blow air into the gap between grip and bar, it will puff up the grip and will pop right off. Same with installing the grip they slide right on with no effort. With or without grip glue. Bummer on the cyl.
I’ve watched too many of your videos… I randomly blurt out: “Ok, got the carb all cleaned out…” Good stuff!
Runs good, love it!! Nice work Joe.
I have confidence you’ll figure that leak out asap or already have with all the comments. Keep plugging away, Kickin ass and taking names. 👊🏻
Cringe at the running in process, very first start should be at idle till engine warms up then left to cool down to bed the piston and rings in, followed by a mid rev cycle and a high rev cycle. These days tolerance is so good it will only reduce the total life of the engine by a few 100 hours but still worth doing right. Other than that great vid once again sir :)
Great video, always a learning moment. Your patience and knowledge continue to astound me. Keep up the hard work
Dude told him it had issues 🤷🏻♂️ not the sellers fault the buyer isn’t skilled enough to repair the issue, this guy is a child, he has minimal experience and gets lucky sometimes. But his rebuild practices are sloppy and dirty at best
@@ni_wink84quick and dirty
@@ni_wink84who’s forcing you to watch his channel tho? Go find something you want to watch or upload your own stuff and get roasted in your comments ✌️
@@user-fv6lx6ku1d hard not to want to see a train wreck, same reason people watch disasters, just want to see how bad it can actually be.
The only time i had a garage it was filled with projects and in a month of working on bikes and rehoming them i could rebuild the entire engine on street bikes and dirt bikes. I love doing this.
That bike runs really well considering.. nice job on the rebuild. I think that o-ring needs metal on both sides of it, as a comment down here says, you could absolutely build up that wall with a tig weld (man I'd put some jb on there and call it good!!
He needs to take all studds out of the jug sharppie it and slide it over
80 100 120 grit this will show him the hi low spot.
The 600 grit is way to fine to do what he is going.
I clean my parts much more than you do. I need it looking like new when it goes back together, but you do you. JB Weld the tiny hole and the cylinder near the head. It should hold. It isn't in a stress area.
That cylinder is toast. The outer seal needs to deform between the head and the cylinder. This is super too bad man. Nice vid - keep it up.
I really enjoy your videos. I live in an apartment now. No more garage, no more tinkering. This is a great outlet for me. I wish I was there handing you tools, lol.... Subscribed.. Z 😺
I wouldn’t trust that cylinder if it’s cracked in one spot it will crack somewhere else !
Bad news, previous owner lied his ass off.
Good news, we got two great videos!
Great work!
You really need to buy yourself a set of ratcheting wrench’s there the bomb
Just as I was wondering what the update was with this bike, you post the video !
Love your videos. I watched them all the time.
I would stop using grease in between the air filter box in the air filter itself. Overtime that grease will attract dirt and sand and as you remove the air filter it can fall into the airbox and make its way into the engine.
I just spray extra filter oil around the seal and that does the trick.
Love listening while i start my day at work
As many as you come out way ahead on, taking a beating occasionally comes with the territory. You do a great job, and it is interesting to see the mistakes people make while working on stuff when going in for repairs. Wish you would let bikes and quads warm up just a little more , before revving it so much.
36:24 a easy way to get grips on us to take a blow nozzle with a thin tube and insert it in the grip. Blow air into it as you push the grip on and it will slip right on easy peezy.
Dunno why but I really enjoy your little videos
Hi, excellent work again !
For this time, I got a trick for you !
For easier handle grip installation, spay brake cleaner in the new grip and hurry to put it on his final position... way more easier because the brake cleaner act as a lub :-) and when it evaporates, it wont move anymore
Hope this help :-)
Joe it's a damn shame there are so many liars, scammers.., out there.
You have the right attitude when it comes to dealing with these jack wipes!
Keep doing what you are doing, a caring attitude, quality work and entertainment (Vinny) as well, and a passion to do things right.
Your fans are with you!
Allan in Columbia, SC
I don't really trust those Power valve screws,... I would've used a little Lok-Tite on them. Great video Joe~
Thanks for the great content you make
Hi mate just get the hole in the head welded and that dip in the head built up with weld good job otherwise keep bringing these old bikes back good to watch take care.
Thank you for making these videos.
Gonna be seriously nippy when all problems ironed out👍sweet!
Great video as usual, I've noticed a theme with the background sounds... Either crows making noise or a lawnmower lol. Watching you hone tho, I felt like your drill may have been running a bit fast? I personally have my drill on the slow speed to try and keep consistent hone angles, just my thoughts but I suppose it doesn't matter how the sausage is made as long as it works. Keep up the good work. I wouldn't mind watching you break open a XR600R 😉
I love watching your content, you should invest in a parts cleaning machine as much as you work on things. Keep up the good work man.
You should look into why your so shaky! Love your work brother !
i have the same bike and im having a hell of a time wondering why its keep bogging going into 1st.... thinking it may be a clutch issue. love the videos man. i have learned a lot! keep it going!
Check the little arm that connects to the push rod. It can wear out
You could also try moving the needle down 1 clip
my kx125 was doing this till i found out my carb float was stuck and flooding my bike, maybe check that out
it idles and revs fine tho. it will red out no problem. @@Ace.inc200
ill give that a shot and see what happens
right now its all factory specs.
@@hhstarwars
You live your learn.. good saying.. maybe a t-shirt logo. Thanks for the rebuild.. Great vlog
Don't you just love putting little parts in tight places LOL I have very big hands but I love to build engines and some times those kind of things can be a bit of a challenge, love the video keep up the great work sir.
Watching your videos made me realize that we found the real author of "Zen and the Art of Motorcycle Maintenance"!
That coolant leak up top could be another pin hole that you don't see or like you said, a low spot in the o ring groove. But I would try holding the bike upright or slightly to the right to make sure coolant isn't coming from the right side and ending up where you see it.
First American I see who does not war earmuffs, eyeprotection and 3 pairs of gloves while working on a bike. A real mechanic. 👍
Looked like porosity in the welds.
You’ve definitely got more patience than me. Lol. Great video
It's possible that there is porosity under the weld next to the cylinder head causing the top leak. You do have a pinhole in the weld lower on the cylinder jacket as you observed. The o-ring in the outer groove in the cylinder at the head might be sealing fine, the groove bottom may be OK, but the weld under it may have a second pinhole into the water jacket. I'd suggest finding a used cylinder / jacket, cause that weld is real iffy. Cheers!
Also it would be a good idea to use blue thread locker on the screws you removed in the power valve. Better safe than sorry.
Wiseco always puts out the best materials 🙌🏻
Bro your one of the best on youtube with motorcycles/atvs.cant stop watching you keep up the awesome videos
Gotta love when parts go rolling. Such a pain in the yass!
Slide that wheel forward and take a link out. No way to adjust it now with chain stretch. Just a hint for the future.
Definitely needs new plastics as well :) love the channel.
The phrase "someone's been here before" comes to mind
Even though that spot is outside the o-ring it's probably allowing it to flex just enough to leak
I look foward to your videos great channel thank you
It's funny because it looks like you already owned and worked on it. All that hackery is right up your alley joe.
Nice work 👊🏻
Customer states it just needs a carb clean
😂
Whoever tried to rebuild that bike before you got it should have his tools removed. I don't know how you stay so calm.
lol have you ever opened up the door before you fire up a machine?! Great video as always!
Hey, that bike is better than my dirt bike.....i dont own one.😢
I do own a 04 road ki g tho...lol
Great video man, always a thumbs up from me brother....
Perfect timing, just got up to see this
Cylinder could be warped. And most likely cracked from the inside. Need a new cylinder imo
Was getting ready to insall that exact chain on my KDX tomorrow so hopefully itll work lol
Really should use honing solution. It works ok with oil so cool!!!
I have been waiting for the part 2
Nice little cycle, when you get it running correctly.
When you were removing the power valves, it looked like there was a repair made to the cylinder (weld or some metal-impregnated epoxy). Just thought you should check that.
Oof that head leak, waitin for the next episode on this!
To buy all those nice new parts for such an absolute pos beat bike blows my mind. But I am learning a tonw atching your videos, thank you.
Joe, you need a sonic cleaner! Or get a 5gallon bucket of "Spray Gun Cleaner" it comes with a metal basket that goes in the bucket, I cleaned my cases for my Quadzilla in one of those, it took off all the grime, paint, gasket material, and even the carbon buildup inside the jug and or power valve area!!! They literally looked Brand New!! Soaked them overnight, then rinsed them with soapy water and blew them off with compressed air..
you should always check the flatness of the cylinder and head before putting it back together. Get a Tig and learn how to weld aluminum !!
You need a portable polygraph machine as part of your inspection kit when buying
used machines, make it mandatory for sellers to take the test!
😂 I Concour
A tip for getting on grips, put some rubbing alcohol down the inside of the grip before you put it on, slide the grip on and then the rubbing alcohol dries in like 20s. Used this for all my bmx bikes Lol
Maybe the JB Weld on the top of the cylinder is protruding just a tad and prevent the head to sit and crush the o-ring properly. You may try to use a flat file to check if it's not protruding.
Sounds pretty good.
Get yourself a tig welder. Sometimes you can peen the hole over with aluminium