Piranha YX 140 Pitbike Top End Rebuild So Soon?
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- Опубликовано: 17 авг 2022
- Today I tear apart my Piranha 140cc to do a top end on it.
We've been having some running/staling out issues, low compression and a bit of smoke sometimes. Didn't expect to need to do this so soon as this engine is about 2 years old but luckily its a cheap and easy process. Follow along to learn how to do it yourself!
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Pitster Pro X4 190cc Project bike
Pister Pro x2 with Piranha yx 140cc
Thumpstar 190cc
Kawasaki 110cc
SSR 170cc
crf50 with piranha YX 125cc
1st Bike: Crf50
Engine: piranha 125cc
Carb: Mikuni
Rims : BBR
Tires : Dunlop
Forks : BBR
Triple Clamps : BBR
Exhaust : BBR
Gas Cap : BBR
Frame : powder coated green crf50
Grips : Protaper
Handle bars : Sand industries
Crossbar Pad : Protaper
Filter : UNI
Second Bike
Thumpstar / YX 140cc
Pro Circuit Exhaust
Marzocchi forks
UNI Filter
Dress up kit
Motard tires
ASV Levers
Ect 
Развлечения
Thank you for your content! Bought my son yx140. Planning on many rebuilds and modifications.
And maybe he should be on top of oil changes might have helped the life of the top end, also if u have a foam filter remember to keep it oiled properly
Got a stomp 140 not the new z3 ones and had no compression can crank it with you hand. Doing top end build a valve was bent so ordered barrel and head in the next few days. These videos save the day haha
Thank you from Czech Republic.
First sponsor! Hell yeah congrats guys!
Thank you 🙏
Hey im kinda late but i notice you mention it needing a rebuild "so soon" And i think the only explanation for this is probably that the air filter was letting sand get in? I'm not sure if it had one of those cloth airfilters on it with the wire mesh but grains of sand can pass streight through them I found out the hard way
I’m sharing ur videos to my friends one day u wil have 1mil subs 😊
🙏
Just a quick help for next time for any pit bike top end rebuild, remove the bolt next to the oil drain that has a spring and a rod, it’s easier to put the timing gear on instead of prying it with a screw drive, I learned it the hard way by running my yx125 out of timing lol destroyed my piston and valves
Ouch!
i have a 140 estart.I cant get mine to run, I have spark and fuel but it wont run, just cranks over, any ideas?
@@babyhullk check compression and timing, open the throttle fully while have the kill switch is pressed then crank it, you should be at the 140+mark maybe even 175 if your motor is healthy
@@babyhullkcould be timing , check for fuel spark and compression
What size are you street tires ?
🤘😮💨
Port the cyclinder head it helps with flow and power
Hi. today is my first time to adjustment the valve on my SYXMoto 125. I use your video to do the adjustment .003 on intake and .005 exhaust but it's nocking sound it's spouse the be with that sound or not necessary. I liked more quiet like before.
Shouldn’t be knocking. Redo the process and make sure it’s at top dead center when your doing it
It may knock a bit, but it’s best to adjust the valve lash and rotate the engine manually a few times and re turn the flywheel back to TDC and check valve lash with filler gauge, if it’s good then it’s fine even if it knocks a bit
@@slavsquad Yes I did the whole process again and it sounded the same. Then I tried again but set the exhaust to .004 this time and the sound went down quite a bit. But I felt that I lost of power. With the intake at .003 and the exhaust at .005 there you feel power. So thank you very much for your reply and help. Then I go back and leave it at .003 and .005 =) 👍💪
@@cobalt930 Yeah that would be a matter of ignoring the sound. Because the power that is felt with that readjustment vs when they are adjusted from the factory you feel it. 💪😁 Thank you for your response and help.👍🏍
@@rafyelmerse my pleasure
Having trouble with get the piston in the.cylinder rings keep getting caught any trick or tips
Usually just go one at a time when pushing them down the cylinder. Push piston up from the button of rather then from the top.
If you still can’t do it then you’d have to buy a kit for installing pistons.
Should be able to get it with some patience and wiggling
Thanks man I'll give it a try
Ya buddy you have to check the rings every time even new or risk blowing the engine up if you don't. P.s if you ever run nitrous you have to gap the rings even more😉👍✌️👌💯🏍️🛠️
that would make a fun video haha
Really. I want a see compresion test....
I closed mine up nice, and I can’t even get the timing chain onto the sprocket because it is so tight it won’t go on.
I don’t want to tear the whole engine down, and I don’t think I even know what I’m supposed to do anyways so idk if it would solve the problem. I looked for days at various forums and searched for videos to try to find out. 🎉 bikes torn down outside. with a plastic bag over it right now
Did you remove your timing chain tensioner?
@@slavsquad 😅 I looked into that, got lucky instead, went back to the bike the next day. Messed around with it being super tight, it made it. Guess I had to stand back from it. But wow I am going to have to learn about the tensioners. Got a project bike now which is cool though I am learning a lot
😊,
Mine blew up with 1 hour on it 😂
Did you change the oil that came with the engine right away? If not then that’s probably why lol they factory oil is terrible and not recommend to use at all lol
damn i dont know shit about building bikes and this looks pretty ez tbh... still waiting for a popo getaway video...
Pitbikes are probably the easiest engines to work on so yeah you'd be right
They had a very small police chase before, didnt last very long, was in one of the street videos
@@danielj3440 yea saw it
Police have been nice lately lol
Na never use a spark plug brush to clean valves
Bro your turning the fly wheel wrong way