So good and informative. This channel should be way more popular. Let’s get him up there. Oh and for anyone trying to get those pesky dowels out take a valve seal removal tool an squeeze a twist. They pop right out. Best to heat them up too. Your welcome
I just finished watching all 3 parts and what wealth of info you share with us. I have split the case on a YZ85 and 125 and you made it look so easy. Thanks for sharing all the detailed information that us shade tree mechanics don’t know.
Your very welcome! I had another YZ125 here with the same problem. I sent that one down the road to my brother to have him do the job. He seemed excited about doing it so I was like go for it lol
@UpAllNight91 Burgundy one of my favorite colors. I don't remember the year it was , I 💜 white wall tires. Vogue tires pretty cool. My Delta didn't have a radio so I put my portable radio in the seat and seat belt it so it wouldn't fall when I swerve n make wild ass turns 😂
😆😆😆 I was running back to the truck to beat the traffic out lol. Place was packed! We brought some electric scooters to zip around and that worked out well. Locked them up next to all the street bikes when we walked in and used them to zip back. I didnt have any beer this time and its strange how drunk the crowd can seem when your sober lol. Was a blast though!
@@bunnyman6321 I cant take the credit, it was my wifes idea. But I suspect more people will be doing that next year because we kept getting comments as we rode them around lol
Thanks! Great question. The impact doesnt seem to change the true. Probably helps the other side of the crank is free to move and not locked into place, but they hold true.
Were you put that little Yama bond on the power valves little black rubber mine has been leaking a little bit since I did the top end on my bike im thinking of taking it apart an try little Yamaha bond ur good dam mechanic
@@UpAllNight91 ok I will do I have to change my piston this weekend I all ready put 15 hours on bike in 2 weeks since it's been fix is it normal to change piston every 15 to 20 hours? I'm kinda worried about it messing up new cylinder I was reading that 2003 yz125 2003 so is really hard on piston an cylinder an one guy went thru 2 cylinder an 3 pistons in one summer.
@@michaelgarland579 Yeah if a 125 is riden hard the piston life can be anywhere from 10 to 25 hours, depending on the rider and conditions. It surely helps to run them rich on the premix, like 25:1. But yeah, I do my 125 every 20 to 25 hours these days.
The peppering (as I call it) seen on this bikes piston is usually from detonation that comes as the motor gets hot. Higher octane fuel promotes cooler combustion chamber temps and will keep this from happening. This was a mild case but a case none the less. If running straight pump fuel its important to stay tuned with your jetting and keep watch for pinging. If running leaded race fuel you can get away with a lot more before pinging.
@@UpAllNight91 no sorry i was talking about the left cramkase cover where the spraket bearing its located the only problem with my its the spraket bearing
I put 439 hours on a 2019 yz250x. Ran a low compression apex xc head, on 87 octane pump gas that has up to 10% ethanol. Never a problem other than cleaning the pilot jet 2 or 3 times a year. If you ride a lot ethanol won’t cause issues.
@@JackMacdonald-ih3ht likely old gas with ethanol will, because the gas evaporates and then sometimes a tiny white fluffy substance (ethanol) can build up on the pilot. The larger the pilot jet the less issue you will have. I don’t ever empty the carb float bowls between rides. Imo having the fuel in them seeing how it’s a 2 stroke, helps keep the float needle lubricated and sealing properly. Also keep in mind most higher compression 2 strokes will need more than 87 pump fuel to prevent detonation the reason I could use it was I lowered the compression with an aftermarket head so I could run cheap easily accessible fuel. I was 4th overall in our Midwest enduro series racing enduros at a competitive B level doing this as I just want you to know I’m not a casual rider, I ride a lot.
Chad is right on! Ethanol blend fuel is ok. I currently use 60% 110 race fuel with 40% 93 pump fuel that has 10% ethanol in it for my smokers. For my cars (Mustangs) I actually prefer 10% or 15% ethanol blended fuel. I have tried non ethanol rec fuel and seen the HP went down a few and fuel trims started climbing away from zero.
So good and informative. This channel should be way more popular. Let’s get him up there. Oh and for anyone trying to get those pesky dowels out take a valve seal removal tool an squeeze a twist. They pop right out. Best to heat them up too. Your welcome
Thanks brother! Good tip on the dowel pins. Heat definitely loosens them up too. I haven't tried the valve seal removal tool trick, will try that
This guy knows his shit I love repair and as a mechanic we all live and ride
A heads up those "rings metal " will definitely deform the seal if you don't have a press. Any dif deformation will affect the seal
I just finished watching all 3 parts and what wealth of info you share with us. I have split the case on a YZ85 and 125 and you made it look so easy. Thanks for sharing all the detailed information that us shade tree mechanics don’t know.
Your very welcome! I had another YZ125 here with the same problem. I sent that one down the road to my brother to have him do the job. He seemed excited about doing it so I was like go for it lol
Another great video!!! Thanks again for all the information you provide to us.
Thanks and your welcome! Thanks Joel for coming along!
You do a great job with your videos and commentary. Keep twisting that throttle man you rip on those track videos!!
Ahh thanks man! Gonna do my best, Appreciate it!
Fairplay, that chicken in the background doesn’t shut up, does it?🤣🤣loves the video bro keep them coming
LoL, no he doesn't shut up. When he hears me talk that's when he feels like he needs to crow. Every phone call you name it lol.
I had a Delta 88 too. I had blue cloth seats and white wall tires
Right on, mine was burgundy/burgundy. What year was yours? I had white wall tires too lol
@UpAllNight91 Burgundy one of my favorite colors. I don't remember the year it was , I 💜 white wall tires. Vogue tires pretty cool.
My Delta didn't have a radio so I put my portable radio in the seat and seat belt it so it wouldn't fall when I swerve n make wild ass turns 😂
Yz 125 top video ❤
Very enjoyable and learned so much. Thanks!
Thanks Ken!
You got to beep the words out when you were putting the stator on and the sprocket 🤭🤭
Dude you ain't kidding! Gotta get this right lol
Man love the vids. Much love from Nebraska
We use torque by hand on some .. when you apply a force that will loosen the bolt. Lock tight or whatever you want
Thanks Brother! And thanks for coming long for the ride!
@@stravis3269I'm a "thread locker" freak lol. I lock everything in
Top 👌🏼
This was such a great how to! Your video was essential in helping me rebuild my sons YZ85. Thank you!
Ahh man thats awesome! Thats great to hear!
What that Daytona sx race was like?
I think I saw you running cross the track to the Podium with a up all night t shirt on at the end of the race 😂
😆😆😆 I was running back to the truck to beat the traffic out lol. Place was packed! We brought some electric scooters to zip around and that worked out well. Locked them up next to all the street bikes when we walked in and used them to zip back. I didnt have any beer this time and its strange how drunk the crowd can seem when your sober lol. Was a blast though!
@UpAllNight91 You're the best preparer of all time , I would prolly still be walking to the car till this day
@@bunnyman6321 I cant take the credit, it was my wifes idea. But I suspect more people will be doing that next year because we kept getting comments as we rode them around lol
@UpAllNight91 Well you gotta bow down to your wife expeditiously 😂
Crown 👑 her
@@bunnyman6321😆 👸
Great video, does using a impact on the gear on end of crank knock it out of true?
Thanks! Great question. The impact doesnt seem to change the true. Probably helps the other side of the crank is free to move and not locked into place, but they hold true.
Were you put that little Yama bond on the power valves little black rubber mine has been leaking a little bit since I did the top end on my bike im thinking of taking it apart an try little Yamaha bond ur good dam mechanic
Thanks man! Yeah pull that cover back off and put a dab of yamabond there, that should do the trick.
@@UpAllNight91 ok I will do I have to change my piston this weekend I all ready put 15 hours on bike in 2 weeks since it's been fix is it normal to change piston every 15 to 20 hours? I'm kinda worried about it messing up new cylinder I was reading that 2003 yz125 2003 so is really hard on piston an cylinder an one guy went thru 2 cylinder an 3 pistons in one summer.
@@michaelgarland579 Yeah if a 125 is riden hard the piston life can be anywhere from 10 to 25 hours, depending on the rider and conditions. It surely helps to run them rich on the premix, like 25:1. But yeah, I do my 125 every 20 to 25 hours these days.
Sometimes I’ve had luck lightly tapping the bowl when they leak gas
That does work sometimes too. When I do that I try to find something plastic so it doesn't dent up the side of the carb from tapping on it
You are welcome here bud
Florida and salt and high humidity in the air will wear out parts
We do not see any vehicles from the hot humid survive. It's hard on a engine
@@stravis3269 I feel bad for my 125 in the summer when fast soft tracks like 74MX lol,
How will you know if your bike is detonating was that detonation very minimal or pretty bad?
The peppering (as I call it) seen on this bikes piston is usually from detonation that comes as the motor gets hot. Higher octane fuel promotes cooler combustion chamber temps and will keep this from happening. This was a mild case but a case none the less. If running straight pump fuel its important to stay tuned with your jetting and keep watch for pinging. If running leaded race fuel you can get away with a lot more before pinging.
@@UpAllNight91 so lean can cause detonation Can rich cause it?
@@JackMacdonald-ih3htRich doesnt cause it.
Can you remove the left side cover with out taking apart the right side can you let me know that please
Are you talking about the outer clutch cover without taking off the inner clutch cover? If so, yes you can.
@@UpAllNight91 no sorry i was talking about the left cramkase cover where the spraket bearing its located the only problem with my its the spraket bearing
@@thatrookiee Oh ok. To replace the bearing behind the front sprocket the whole motor needs to be removed and the cases split apart.
🏜👍
Do u use ethanol in your 2 stroke motors? Does ethanol really make 2t run hotter? And does it wash oil off cylinder walls
I put 439 hours on a 2019 yz250x. Ran a low compression apex xc head, on 87 octane pump gas that has up to 10% ethanol. Never a problem other than cleaning the pilot jet 2 or 3 times a year. If you ride a lot ethanol won’t cause issues.
@@chadrides914 will old gas clog pilot quick tho?
@@JackMacdonald-ih3ht likely old gas with ethanol will, because the gas evaporates and then sometimes a tiny white fluffy substance (ethanol) can build up on the pilot. The larger the pilot jet the less issue you will have. I don’t ever empty the carb float bowls between rides. Imo having the fuel in them seeing how it’s a 2 stroke, helps keep the float needle lubricated and sealing properly. Also keep in mind most higher compression 2 strokes will need more than 87 pump fuel to prevent detonation the reason I could use it was I lowered the compression with an aftermarket head so I could run cheap easily accessible fuel. I was 4th overall in our Midwest enduro series racing enduros at a competitive B level doing this as I just want you to know I’m not a casual rider, I ride a lot.
Chad is right on! Ethanol blend fuel is ok. I currently use 60% 110 race fuel with 40% 93 pump fuel that has 10% ethanol in it for my smokers. For my cars (Mustangs) I actually prefer 10% or 15% ethanol blended fuel. I have tried non ethanol rec fuel and seen the HP went down a few and fuel trims started climbing away from zero.
@@UpAllNight91 what do you mean by fuel trims, I’m not familiar with that terminology. Thanks!