Fitting pitbike piston rings and the barrel to the 155cc chinese dirt bike rebuild

[@blownwest1117]

What can I say about this fantastic gentleman? The tickers ring goes on the top ring space and the second thickness one goes on the second ring and the oil rings are so thing they goes either side of the main bit that goes in the middle. Really nice detail. 5 thumbs up from me and plz subscribe to this really kind and knows his stuff is that's got to be worth a sub. Take care motorcycle fan and big shoot out to the motorcycle fixer. Take care m8

[@motorcyclefixer]

Thank you Dean 👍🏼

[@blownwest1117]

@Motorcycle fixer your welcome did you get the email I sent you about the gsxr I have, best regards

[@connorjack3246]

Yeh top guy explaining it really well.

[@joshwesley8787]

You are awesome. I hope you keep making videos on the zs 155 cc engine

[@motorcyclefixer]

Hi John Thank you very much for the nice comment I plan on continuing with the 155 engine in the coming months so stay tuned 😁👍🏼

[@stumpedtree4204]

very helpful video mate!

[@motorcyclefixer]

Thank you 👍🏼

[@jacobvisser4955]

Thank You!🎯🤗

[@motorcyclefixer]

No problem 👍🏼

[@ScepticalCliff]

So that's what a Gudgeon Pin is.

[@motorcyclefixer]

Everyday's a school day 👍🏼😂

[@connorjack3246]

Nice video mate 👍🏻 what size piston is it on a demon x 120 pit bike?

[@motorcyclefixer]

Hi Sorry I don't know off the top off my head and I don't have any around to measure

[@connorjack3246]

@@motorcyclefixer would it be 52.4mm??

[@motorcyclefixer]

@@connorjack3246 🤷🏻‍♂️ I've have to get one to measure it Sorry

[@Msx_Cam]

Hello, would you know why my 125cc pitbike won’t click into 3rd and 4th it’s was fine last time I rode it but it’s been sat for a year since I haven’t had time to do anything with it, it’s only had about 6 hours riding time. Thanks

[@motorcyclefixer]

Hi Is the engine turning when you're changing gear The gearbox has to be turned sometimes for the gears to mesh

[@lewistait2708]

I have a dowel what has a curve on the edge if that makes sense and it looks different to the rest of the dowels and i cant seem to get around it im currently doing a top end rebuild

[@motorcyclefixer]

Hi Sorry i don't quite understand what you mean. What is the problem with the dowel?

[@lewistait2708]

@@motorcyclefixer its ok and turns out it was called an oil feed dowel but i sorted the problem out

[@ITzZMB]

What can happen if the piston is in upside down so the intake is on the bottom

[@motorcyclefixer]

On a four stroke the cutouts for the valves are usually different sizes so the piston could hit the valves

[@bulpinbros]

Why does this engine not have a small end bearing.

[@motorcyclefixer]

Hi Thanks for your question It's a four stroke engine and Four strokes don't have small end bearings as a rule

[@bulpinbros]

@@motorcyclefixer reason I asked is because I've just stripped my son's stomp engine, the gudgeon pin is well scored grooved, it was very hard getting the pin out. So thought it wouldn't get like that if it had a bearing.

[@motorcyclefixer]

@@bulpinbros yes I've seen it a few times on pitbikes. Need to make sure the oil is topped up and changed regularly Sometimes it can happen even then if the engine overheats

[@bulpinbros]

@@motorcyclefixer I've just ordered front brake for my son's stomp 140 , the front brake on it is a single pot, but the ones I got in the post today are twin pot. Is there a correct one.

[@motorcyclefixer]

@@bulpinbros I'm not sure what the standard fitment is on there I'm sorry. Look at pictures on Google of the same bike and see what's on them. If the original is single pot then I would replace like for like