that is mega helpful especially as we need to do a full tear down after yesterday's action and crankcase crackage!. Could do with a download of of Sean's brain when its available😆
@@Pitbikesonic76yes it is a weird one but we’re learning loads as we fix it. We want to be ready to do the last winter series round at Stretton in 2 weeks so it’s a bit of a rush.
If I have some problems with suspension, I'll do a video on it. My folks and shock have always been very reliable, so it's something iv never really mucked about with.
@@Pitbikesonic76 some periodic service operations should be done even if everything seems ok e.g. suspension oil wears out, there should be a proper amount of it in forks (mm belowe the top cap) and so on... your mechanic seems to be very competent, I would be pleased to hear his opinions. Greetings from Poland!
Having trouble with my sons 140 pit bike. The clutch will not engage. Fitted new clutch plates, and it will not engage at all. Any advice would be amazing, thanks 😊
Great video very helpful thank you. I’m changing my kick start gears and need to find the torque settings for the YX140 do you have a link for these please? The main torque settings I need are for the clutch nut and the clutch spring retaining bolts. I heard Sean say he torques the case bolts at 10 then 12 is that ft. Ibs or Nm?
@@Pitbikesonic76 Thank you for making great content, I’m just starting out and hope to race soon and your channel has been brilliant explaining everything.
I rebuild my engine just as shown in the video, bzt i gave a problem. The gears shift in the wrong direction, so n is all the way up and 4 is all the way down. Also, when i want to shift into n, its in some kind of gear but even when pulling the clutch lever, the back tire wont spin. I then have to kick the engine a bit and then its in neutral. Then i can start it normally, but when i shift into first i cannot get the bike going, i have to start in second gear to get it going
Ok i found my issue regarding neutral, the m6 bolt Holding the shiftdrum in place was loose. Now it is still shifting in the wrong direction. I have to add to that, that my first gear was broken, so i ordered a new gearset with the shiftdrum. Are there drums which work in the wrong direction?
Awesome video. Is there a way i can determine whether i have a gen 3 or gen 4? I’m having issues with that bung on top of the sprocket leaking and it did not have that bolt holding it on
I use the Lightened one from Parker Racing www.ebay.co.uk/itm/165581566828?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=MxmeAqfSRCW&sssrc=4429486&ssuid=DRHV2jSqTsq&var=&widget_ver=artemis&media=COPY
Its because this engine was a gen4, and they don't have them. And I changed the casing for Gen 3. I'm getting a modified clutch adjuster bracket made, so I should be going back to Gen 4 soon 😁
It depends bud most time yes I get a whole season out of an engine before it gets taken apart again and checked over. But yes, I know a lot of people who will go through a few engines a season 🫣
I got 1100ish miles from my 140, head gasket blew, had the wrong valve specs for abit(think they were too tight from stock) just fit a topend. Compression was showing 150ish.
my yx140 is puffing white smoke abd leaking oil from the exhaust port, am i right in thinking thats valve stem seals? ne piston/rings cylinder is good still smokes and leaks. tia
@@Pitbikesonic76 ty for the reply! how likely do you think the guids are the problem? i just wanna get it all orderd in one go and get it fixed not fix one thing wait for parts for another tia
@@Pitbikesonic76 the guids need to be pressed out and back in right? thanks for the response there arnt many detailed pit bike tuturials on these sorts of problems and almost no one actually replies haha u earned a follower for sure
Yeah, so the tool that's in the video will help you with that if we talking about the same thing If you need more help, message me on Facebook or Instagram 👌
![ออกพรรษาน้ำตาหล่น - แอน อรดี [OFFICIAL MV]](http://i.ytimg.com/vi/PFZtOcY9ONA/mqdefault.jpg)
This is a great video.. watched it twice now!!
Thank you mate much appreciated 👍
Very insightful you can tell Sean has done that 100s of times now
He does make it look easy 👌
last night my gearbox did that third gear neutral thing im jinxed now oh well 146 v2 here i come😮
Big up the Whitaker 👏🏼. Like the clutch holding tip.
Ginger god 🙌
This is an excellent and informative video you sir are a natural teacher good skills
Sean, one who does the engine, is very good. I will past it on your kind words.
i need to as well because my bokt stripped so this is right on time😂
GREAT TUTORIAL!
Thank you mate
that is mega helpful especially as we need to do a full tear down after yesterday's action and crankcase crackage!. Could do with a download of of Sean's brain when its available😆
I sent him your video he has never seen one crack there b4 !
@@Pitbikesonic76yes it is a weird one but we’re learning loads as we fix it. We want to be ready to do the last winter series round at Stretton in 2 weeks so it’s a bit of a rush.
I have a 140 and I rebuilt it put race cam and rings and everything correct I believe and I can't get more than 80 psi compression
This video made me check my tension cap good job I did there's nothing there 😮
Engine only done 1800 miles on my road legal
The rubber ones do wear away quickly!
The stronger ones are the best engine upgrade
Suspension maitenance episode would be also very helpful! Regards!
If I have some problems with suspension, I'll do a video on it. My folks and shock have always been very reliable, so it's something iv never really mucked about with.
@@Pitbikesonic76 some periodic service operations should be done even if everything seems ok e.g. suspension oil wears out, there should be a proper amount of it in forks (mm belowe the top cap) and so on... your mechanic seems to be very competent, I would be pleased to hear his opinions. Greetings from Poland!
Having trouble with my sons 140 pit bike. The clutch will not engage. Fitted new clutch plates, and it will not engage at all. Any advice would be amazing, thanks 😊
Have you put the lock washer on the back of the basket the right way round. Iv made that mistake before.
Great video very helpful thank you. I’m changing my kick start gears and need to find the torque settings for the YX140 do you have a link for these please? The main torque settings I need are for the clutch nut and the clutch spring retaining bolts. I heard Sean say he torques the case bolts at 10 then 12 is that ft. Ibs or Nm?
Clutch nut 40Nm
Clutch bolts 10Nm
Cases 10Nm
@@Pitbikesonic76thank you that’s brilliant.
Thank you for watching the channel 😊
@@Pitbikesonic76 Thank you for making great content, I’m just starting out and hope to race soon and your channel has been brilliant explaining everything.
I rebuild my engine just as shown in the video, bzt i gave a problem. The gears shift in the wrong direction, so n is all the way up and 4 is all the way down. Also, when i want to shift into n, its in some kind of gear but even when pulling the clutch lever, the back tire wont spin. I then have to kick the engine a bit and then its in neutral. Then i can start it normally, but when i shift into first i cannot get the bike going, i have to start in second gear to get it going
Ok i found my issue regarding neutral, the m6 bolt Holding the shiftdrum in place was loose. Now it is still shifting in the wrong direction. I have to add to that, that my first gear was broken, so i ordered a new gearset with the shiftdrum. Are there drums which work in the wrong direction?
Awesome video. Is there a way i can determine whether i have a gen 3 or gen 4? I’m having issues with that bung on top of the sprocket leaking and it did not have that bolt holding it on
Watch my latest video I'm working on a gen 4 then x
Great vid but which stator and flywheel are you using? I’ve tried to fit a lifan 150 system today but can’t get it to fit. Cheers
I use the Lightened one from Parker Racing
www.ebay.co.uk/itm/165581566828?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=MxmeAqfSRCW&sssrc=4429486&ssuid=DRHV2jSqTsq&var=&widget_ver=artemis&media=COPY
Great video as always!
Noticed there’s no oil slinger on the end of the crank on yours, is there any benefit to that?
Its because this engine was a gen4, and they don't have them. And I changed the casing for Gen 3.
I'm getting a modified clutch adjuster bracket made, so I should be going back to Gen 4 soon 😁
@@Pitbikesonic76 aaaahhh makes sense buddy. Cheers for that! 👍👍
my third gear is jumpin thats prolly it or broken teeth
Where can I find that metal tipped cam timing plunger thing?
www.parkerracing.co.uk/product-page/yx140-timing-chain-tensioner-upgrade
There you go buddy 👍
do you get the whole year out of 1 engine? when i rode 140s was going true an engine every 3 months
It depends bud most time yes I get a whole season out of an engine before it gets taken apart again and checked over.
But yes, I know a lot of people who will go through a few engines a season 🫣
I got 1100ish miles from my 140, head gasket blew, had the wrong valve specs for abit(think they were too tight from stock) just fit a topend. Compression was showing 150ish.
my yx140 is puffing white smoke abd leaking oil from the exhaust port, am i right in thinking thats valve stem seals? ne piston/rings cylinder is good still smokes and leaks. tia
Yh, will be one of them or both, bud 👌
@@Pitbikesonic76 ty for the reply! how likely do you think the guids are the problem? i just wanna get it all orderd in one go and get it fixed not fix one thing wait for parts for another tia
For how much it costs and what you have to take apart do both
@@Pitbikesonic76 the guids need to be pressed out and back in right? thanks for the response there arnt many detailed pit bike tuturials on these sorts of problems and almost no one actually replies haha u earned a follower for sure
Yeah, so the tool that's in the video will help you with that if we talking about the same thing
If you need more help, message me on Facebook or Instagram 👌
Valve clearance 0.04 - 0.06 ?
Intake 0.10 and exhaust 0.15