Thanks Kevin, this video helped me identify the sound I’ve been hearing on my ke trail bike. Got it parked now&Looking forward to the next video on the replacement , appreciate the content, aloha!
was looking for the source of the noise of my Peugeot Fox 50. Was sitting outside with the PO without a cilinder. got it unstuck and all, but today i started it for the first time and found this noise. thanks for clearing it up and helping confirming it. time for a rebuild
Massive thanks for this video! I bought a bike sight unseen many years ago "it runs perfect", had it trucked interstate, and it sounds like sand in bearings. Has great comp and very low use. Been sitting in spare bedroom for 10 years. Praying its just crank bearings! - thanks!!!👍
you can totally hear it. another way to check if the the crank bearing is bad if you cant hear the engine run for one reason or another. is to bring the piston up to TDC, when the piston physically moves down stop. take a wood pencil unsharpened, thought the spark plug hole and see if you can push the piston down. mark the pencil when it touches the piston, then mark it when the piston moves and stops, make another mark. that will give you a good indication of the wear of the your bearings. I've looked at a lot of 2 stroke jet skis, and boats, and know you cant start them all before you have to make a decision on buying them. that and compression check will tell you all you need to know about a 2 stroker.
Thanks so much. I have a 2019 r.e. himalayan with 6000 mi. While going 70 on the highway (not ridiculous speed for most 410cc) it started making this sound. The bike is now totaled unless I tear down the engine myself. Not likely. This is what you get when you buy a "cheap" royal enfield.
Hi Kevin, an unrelated question. I saw on that bike the rubber spacers between the cooling fins of the head. I would have thought they would reduce airflow and cooling. They are on the kv100 s. Why are they there? Is it ok to remove them? Thanks
Hello Kevin, Firstly I want to thank you for your videos. Great stuff! I am restoring a KS 125 from 1976 and you told on the video that Rotary valve 2 stroke engines must use oil pump for mixture. My question is, if I premix the gas myself, will the Engine fail? I was thinking on the possibility of disabling the oil pump and go for premix but now I am not so shure if it can be done. What do you think of it?
Premixing a rotary valve 2 stroke will cause engine damage Oiler Oiler lube rotary valve wich rides on a cushion of oil and lubricates right crankshaft bearing
I just got a broken down pw80 and when I turn it over it makes a noise exactly like shaking a spray paint can. I don't know what's wrong with it but I hope I figure it out.
I recently replaced my stator on a suzuki rm 250. I noticed there was slight play in the shaft but no noise when started up is this the start of bad bearings. Thanks in advance. Jake love the vids
Thanks so much for the reply it's more in and out when you grab onto the flywheel. No noise at all but was curious is it the beginning so to change those bearing before it's worse. Hard to tell if its side to side or just in and out
Your a gent have a channel myself doing build videos and repairs but mainly on pit bikes now onto collecting 2strokes it's a bad habit ahahah. Thanks again
Hi mate are you still alive can you confirm if my crank bearings are gone check my VIDEIO I’ve had this at top speed the bike just shuts down if the bearings are failed can it course compression and shut down my bike starts again
so mine does this i just put new piston in it thinking it woud fix it the other one had low compression but will i need to replace the crank and piston i just put in or just the crank bearings
4:57 for the bearing noise
4:57 it starts up no need to wait 5 minutes to hear it.
Thanks 😂
Thanks Kevin, this video helped me identify the sound I’ve been hearing on my ke trail bike. Got it parked now&Looking forward to the next video on the replacement , appreciate the content, aloha!
Very welcome
was looking for the source of the noise of my Peugeot Fox 50. Was sitting outside with the PO without a cilinder. got it unstuck and all, but today i started it for the first time and found this noise.
thanks for clearing it up and helping confirming it. time for a rebuild
Happy to help
Massive thanks for this video! I bought a bike sight unseen many years ago "it runs perfect", had it trucked interstate, and it sounds like sand in bearings. Has great comp and very low use. Been sitting in spare bedroom for 10 years. Praying its just crank bearings! - thanks!!!👍
Oh boy. My ski-doo F-III might actually need the crank rebuilt! Thank you for the video!
Thank you sir that was exactly what was the case for my 05 kx125... winter project confirmed.
Welcome
Kickover at 4:40
5:00 is the sound...
you can totally hear it. another way to check if the the crank bearing is bad if you cant hear the engine run for one reason or another. is to bring the piston up to TDC, when the piston physically moves down stop. take a wood pencil unsharpened, thought the spark plug hole and see if you can push the piston down. mark the pencil when it touches the piston, then mark it when the piston moves and stops, make another mark. that will give you a good indication of the wear of the your bearings. I've looked at a lot of 2 stroke jet skis, and boats, and know you cant start them all before you have to make a decision on buying them. that and compression check will tell you all you need to know about a 2 stroker.
That's correct i actually will be showing this method before I teardown i try to keep it basic 1st then advanced 2nd so its not overwhelming
Thanks bro that’s the same sound my kx is making 👍
Crankshaft bearing on a kx try adding a little bit more oil to the pre mix i had a friend who was mixing too lean
Thanks,to let hearing us d vry distinct sound of bad crank bearing,vry informative2learn
Welcome
Very helpful I now found the problem
I just got parts in to fix mine
Thanks so much. I have a 2019 r.e. himalayan with 6000 mi. While going 70 on the highway (not ridiculous speed for most 410cc) it started making this sound. The bike is now totaled unless I tear down the engine myself. Not likely. This is what you get when you buy a "cheap" royal enfield.
my kdx sounds almost similar idk i just bought this one
Does that mean crank needs replaced also?
How much would a private owned mechanics shop usally charge to replace those crank bearing?
They would charge the hourly rate plus parts average shop 99+ per hour about 6hours
Thats a clean ass DS... 94 ish? Same as my bike. Mine was ok shape but man its impossible to find plastics!
Yes it is hard kids beat the hell out of these old bikes
Hi Kevin, an unrelated question. I saw on that bike the rubber spacers between the cooling fins of the head. I would have thought they would reduce airflow and cooling. They are on the kv100 s. Why are they there? Is it ok to remove them? Thanks
They are there to protect the fins yes they do restrict air flow and you can remove them
Kevin Bergeron thanks Kevin, thought so. I figured they were for shipping the parts.
They are there for sound dampening. They help quiet the ringing in the fins
I had a bike with bearings like this and it never missed a beat until I sold it but if u have the means to replace u should
Hey man, whats the name of the shop you get ur head redone? I'm having a hard time finding a machine shop. Thanks and keep the videos coming!
I do it out of my house
@@2strokeguru oh wow you do the honing urself!? Thats awesome man
Hello Kevin,
Firstly I want to thank you for your videos. Great stuff!
I am restoring a KS 125 from 1976 and you told on the video that Rotary valve 2 stroke engines must use oil pump for mixture.
My question is, if I premix the gas myself, will the Engine fail?
I was thinking on the possibility of disabling the oil pump and go for premix but now I am not so shure if it can be done.
What do you think of it?
Premixing a rotary valve 2 stroke will cause engine damage Oiler Oiler lube rotary valve wich rides on a cushion of oil and lubricates right crankshaft bearing
@@2strokeguru , thank you for the detailed explanation.
I guess I will have to figure it out how to adjust the oil pump!
Thank you! =)
I just got a broken down pw80 and when I turn it over it makes a noise exactly like shaking a spray paint can. I don't know what's wrong with it but I hope I figure it out.
Would you be able to hear the bad bearing by just turning the engine with the kick start?
You could feel it has grit feel to it
I recently replaced my stator on a suzuki rm 250. I noticed there was slight play in the shaft but no noise when started up is this the start of bad bearings. Thanks in advance. Jake love the vids
Thanks Jake is it up and down play or in and out up and down is bad slight in and out is ok
Thanks so much for the reply it's more in and out when you grab onto the flywheel. No noise at all but was curious is it the beginning so to change those bearing before it's worse. Hard to tell if its side to side or just in and out
@@houseflymotors7459 no noise i would say your good to go happy to help
Your a gent have a channel myself doing build videos and repairs but mainly on pit bikes now onto collecting 2strokes it's a bad habit ahahah. Thanks again
@@houseflymotors7459 share a link
Hi mate are you still alive can you confirm if my crank bearings are gone check my VIDEIO I’ve had this at top speed the bike just shuts down if the bearings are failed can it course compression and shut down my bike starts again
I am extremely busy what video
thanks
Hey Kevin been watching all your videos since I got the 72 g4tb 3 months ago. I have a few questions do you have an email?
I don't honestly check my email are you in the us
so mine does this i just put new piston in it thinking it woud fix it the other one had low compression but will i need to replace the crank and piston i just put in or just the crank bearings
I brought all the parts I will be replacing the engine and repairing the spare engine I always keep spares
4:44