Feel free to get in touch with me on FB if you have any troubleshooting questions! Support the channel and pick up these sick mojomoto parts for your CRF here >>> mojomotosport.com?aff=141
Awesome tutorial! Read the manual but Glad I found this, going to be attempting a rebuild on a seized 08 crf250r in a few weeks. That's if I don't find any major damage and end up parting it out. Wish me luck!
Thanks for watching Jonathan! Be sure to grab a pdf manual for your bike with our link in the video description if you don’t already have one! It’s another tool to make wrenching that much easier.
I have an 05 crf250r and engine has approximately 150 hours, but valve clearance still in spec and cylinder and piston are perfect and look virtually new. I checked the small end of rod and it looks good… and no discernible vertical play in the lower rod bearing. Question… should I replace crankshaft anyway based on hours even if still seems in spec? I have heard that the lower end rod bearing is the weak link, and am willing to put in new crankshaft, if it should be done. Great video!!! Gratitude! Martin
If you’re racing or running dunes you might want to replace it. If you’re not replacing the piston / rings then no way should you be doing a crank. I’ve seen lots of bikes only change oil for 10 years and they’re fine. If you don’t change oil lots with good oil, you’ll have crank issues. Otherwise, let it ride.
Thanks!!!! I am a vet rider and just ride my own mx track on my farm and trails at this point. Also a nut about keeping a close eye on oil level, run great oil, and service often. I was shocked to see that everything is in spec and looks like the engine is still in break-in mode!😂 Thanks again for the advice and your excellent video that helps so many of us!🙏🙏😀😀
Nobody here telling you what to do with your life! Haha Need to be super careful with the aluminum case threads and part clearances; which is why I’d recommend a torque wrench over an impact. Tearing it apart goes way quicker with air tools; way easier to mess something up though.
czcams.com/video/JPWhxPGKVCo/video.html Here’s a transmission video! Check our playlists for all the vids! Thanks for watching, be sure to like and share!
can I apply the same gasket sealer y'all used to a 08CRF250R? the repair manual doesn't mention it but doesn't seem to be bad idea to prevent an leaks. thanks
Don’t think I can tell you that over a CZcams comment! You’ll have to take it apart and see what parts you need. After that, order the parts you need and put it back together.
I have an 09 crf 250r, the bike would not go into first and fifth gear so we had to split the cases and fix that. We fixed that problem and when we went to put the cases back together we noticed the crank case bolts were not getting tight and were stretching. Theses are 8mm bolts that hold the 2 cases together. Do you have any suggestions?
just split the engine case on my 450x... what is that bearing thing called on the flywheel side of the crank behind the timing chain sprocket. thanks mine is munched glad I still have a oem
You shouldn't be able to feel any vertical play in the rod big end. Horizontal play in the bearings is normal until you get the main drive gear bolted on. That should hold the crank in place against the bearing. Hopefully that's what you're referring to!
In and out play isn’t a big deal. Excessive horizontal play isn’t good. That being said, I’ve never had to replace oil pump components on a running bike. If you’ve had an engine failure that might have ran debris through the pump, then replace all of the pump components.
@@CoteMotorcycles we only noticed the play due to new outer case being installed due damage to the old one, bike was never run without oil or had debris in the case, it has done over 300 hours though and has sone movement on the shaft horizontally/vertically though, are those little 9mm bearings not the best design for the purpose/load on them?
Hey I commented on one of your other videos saying about my 2007 Honda crf250r leaking crank oil seals. I've went and bought the tools I will need to get the seal out but are you 100% sure I can pull the seals out and putting in new ones without splitting the engine??? Please reply as soon as soon as possible and if you could do a video on how to do it that would be amazing
And if I was going to do the crank seals do I have to do both sides and can both sides been replaced without splitting the engine?? Sorry for the hassle I just don't want to fuck it up thanks a lot. Ben
+GoBoardCanada no I checked thy when I put it in the crank had push and pull play but not up and down and I was told that was OK and I mean it runs fine now
Might be missing the pin that engages the shaft to the sprocket. The circlip that holds the sprocket onto the pump shaft could also have fallen off and the gear is disengaged from the drive gear.
I'm not sure what kind of advice I can give in that. It just sits in there with an o ring and rubber grommet. If you broke it, you'll need to buy a new one.
+GoBoardCanada thanks I have already ordered new 1 .. next time I guess I'll try use my finger to stop the plate turning upwards check out my engine noise videos it is of the engine seal rubbing on my cam chain
@@s1ck106 it should be in a service manual. I’m not sure what they want exactly for a 2017 but the pretty much everything else runs about 80 inch lbs or 7 ftlbs for the 6mm (8mm head) fasteners.
GoBoardCanada thanks, ktm out here is trying too charge me $500 for a stock , i already have the big bore kit , its bored too a 508 but i think $500 for a stock one is too expensive, u also dnt feel right about mixing stock parts with racing parts, they say the stock is better lol whats yur thoughts on that sir ? i live in canada by the way but still it shouldnt be that expensive, i already put $7500 in that engine n only rode it for 10 hours and now they are saying i gotta put another $3200 in it now
Robert Gregor ktm's can get pricy for sure. I've run oem parts with aftermarket no problem. The hotrod cranks I've measured have never been more than a couple thou out.
Robert Gregor I built a 508 crf and the TOTAL cost of a stroker crank, big bore, gasket kit, crank bearings, can chain ect was under $800 CAD from a supplier off of eBay. The labor is another story.
GoBoardCanada ok , my buddy says that the stock would be better for what im running, little bit less power but he says the bearings and stuff is better, i just dont wanna have too rebuild it again , this thing is bad luck for me , i should of stuck with yamaha lol i got getter luck
I only need the torques of the bearings of the transmission shaft and the one of the bolts lock crankshaft bearing, I have the user manual but those torques are not in the manual Crf250r 2009
I've rebuilt hundreds of these and only a few had bad trans / balancer bearings from water ingestion. Crank bearings should be changed every time the crank is replaced but the trans bearings are fine to reuse if they feel smooth and there hasn't been any water contamination. If you want to replace all the bearings every time you're in there, that's an excellent way to ensure you don't have any problems on the trail. It's just too expensive and time consuming for me to bother with it, considering I've never run into problems reusing them. Most customers of mine want to spend the least money on rebuilds as they can. Frequent oil changes with good oil will make sure those bearings last longer than the rest of the bike. Thanks for watching and leaving a comment!
whats a good range torque wrench to purchase solely for most of the casing bolts 0-?? inch lbs? and 1/4 in. drive I assume for case bolts..and what about the torque on the gear bolts..I have a crf450, what did you personally torque your gear bolts to?
zen pro they would EA h have a SPECIFIC torque value which is stated in a shop manual which you can easily pick up for 20 bucks off amazon. If your contemplating the torque range you need I think you ought buy a manual because unlike your axle and brake caliper bolts etc, inside your engine needs to be RIGHT, and properly torqued.. It's not worth a stupid mistake.
cool i have a 2 stroke but still u r right the shop gets a hundred an hour. fuk them a good mechanic can do it in no time the fukers still make out. more 2 and 4 stroke owners need to work on there own bikes.
Andreas Jönsson really depends on your mechanical aptitude. Takes me about 8 hrs from pulling the seat off, rebuilding the motor and starting it up again. If you're comfortable on the tools, I would double that time. -cote motorcycles
@@erlenspierre3157 you’ll have to take it apart and see. I’ve personally never seen a crank seal fail on its own but have seen them installed the wrong way, which would likely cause cross contamination. You can send me pics etc over FB messenger as your taking it apart and I can try to help as much as I can.
Feel free to get in touch with me on FB if you have any troubleshooting questions!
Support the channel and pick up these sick mojomoto parts for your CRF here >>> mojomotosport.com?aff=141
You just got my subscription! Very good video! You saved me big money! Thank you!!!!
Awesome to hear! Thanks for watching and please share our videos with your buds as well!
Best engine tutorials so far out there. Really good job guys!
I agree
me to
Thank you so much for the detailed video. It's nice to have someone who values the knowledge of bikea
Glad you liked it! Check out all the other vids on my channel and be sure to share with your buds! Thanks for the comment!
I bought the library. Well worth the money. A big supplement to the shop manual.
I needed this for my current build on my channel 🔥
Thanks for watching! Please thumbs up and share!
I have been enjoying your vids. Hope for some 450 vids in the future.
Yay another video! Keep it up man
Awesome tutorial! Read the manual but Glad I found this, going to be attempting a rebuild on a seized 08 crf250r in a few weeks. That's if I don't find any major damage and end up parting it out. Wish me luck!
Fantastic video. So informational. Great tutorial! Keep up the good work!
very well explained! I appreciate it!
Saludos desde tierra del fuego argentina!!
Enjoyed the video greatly, keep up the great work
Thanks for watching Jonathan!
Be sure to grab a pdf manual for your bike with our link in the video description if you don’t already have one! It’s another tool to make wrenching that much easier.
I have an 05 crf250r and engine has approximately 150 hours, but valve clearance still in spec and cylinder and piston are perfect and look virtually new.
I checked the small end of rod and it looks good… and no discernible vertical play in the lower rod bearing.
Question… should I replace crankshaft anyway based on hours even if still seems in spec? I have heard that the lower end rod bearing is the weak link, and am willing to put in new crankshaft, if it should be done.
Great video!!! Gratitude!
Martin
If you’re racing or running dunes you might want to replace it. If you’re not replacing the piston / rings then no way should you be doing a crank. I’ve seen lots of bikes only change oil for 10 years and they’re fine. If you don’t change oil lots with good oil, you’ll have crank issues. Otherwise, let it ride.
Thanks!!!!
I am a vet rider and just ride my own mx track on my farm and trails at this point. Also a nut about keeping a close eye on oil level, run great oil, and service often.
I was shocked to see that everything is in spec and looks like the engine is still in break-in mode!😂
Thanks again for the advice and your excellent video that helps so many of us!🙏🙏😀😀
thanks i have a crf 450r -08 this is just perfect!! many many thanks
THANKYOU
Gold.
Excellent job !
cám ơn rất nhiều những vìdeo ráp máy bổ ích
I don’t know what this says!!!
Thanks for watching though!
Excellent video❤️❤️❤️❤️
Thank you 🤗
Does a 2007 CRF 250 have nikasil plating in the cylinder?
yes
@@peterwilson8254 so that means I can't hone it right?
@@FREEDOMSYNDICATEOFFICIAL exactly . it's not a steel sleeve so once its wore it needs to be replated
@@peterwilson8254 where do you take it to get replated. Honda is saying they don't do it, machine shops only want to hone so I'm like stuck...
@@FREEDOMSYNDICATEOFFICIAL are you in Canada or the usa there's a place in Quebec that has done all of mine and a local machine shop ships them for me
Great video ! Just wondering what are you using for the gear jam? Is it just a chunk of aluminum so its soft?
Cheers
says at start aluminum or plastic
I saw another video and they used a short socket. Looked like a 9 or 10mm.
Welldone
buen video gracias !!!
Good video ....Tq
I always thought the crank needed to be pressed in and pressed out
You’re thinking 2 strokes!!
Please help me, I have a CRF 250r 2006, the transmission oil is in conflict with the engine oil, ah bnm, an idea please
because my motorcycle crf 250 fails high or at full speed but turns on the little leg hold on minimum but fails to accelerate thoroughly
You have a video for 98 Suzuki marauder??
Hello.
What does the clutch lifter connect to? Do you just drop it into the case?
So don’t use a torch to heat the case ?
You could. Id just make sure to keep the flame far enough away and constantly moving so the heat distributes evenly or it won’t work well.
So don’t use a impact?
Nobody here telling you what to do with your life! Haha
Need to be super careful with the aluminum case threads and part clearances; which is why I’d recommend a torque wrench over an impact. Tearing it apart goes way quicker with air tools; way easier to mess something up though.
@@CoteMotorcyclesNo skill
@@Dieselpwr “with great power, comes great responsibility” - Uncle Ben
Hi cote do you know can I use a CRF 250X Transmission in a cr 250 Thanks
awsome
Do you have a video of specific transmission checking
czcams.com/video/JPWhxPGKVCo/video.html
Here’s a transmission video! Check our playlists for all the vids!
Thanks for watching, be sure to like and share!
can I apply the same gasket sealer y'all used to a 08CRF250R? the repair manual doesn't mention it but doesn't seem to be bad idea to prevent an leaks. thanks
richdelgzz rtv sealant is rtv sealant. Order some Permatex aircraft grade gasket, and start building a spaceship with it, stuff never comes off lol.
Hey i have question! How much cost to fix Honda crf450r Crankshaft broke!! Thanks
Don’t think I can tell you that over a CZcams comment! You’ll have to take it apart and see what parts you need. After that, order the parts you need and put it back together.
I have an 09 crf 250r, the bike would not go into first and fifth gear so we had to split the cases and fix that. We fixed that problem and when we went to put the cases back together we noticed the crank case bolts were not getting tight and were stretching. Theses are 8mm bolts that hold the 2 cases together. Do you have any suggestions?
What was the issue my bike won’t go into 1st it will go in to the netrual buts it’s not netrual
just split the engine case on my 450x... what is that bearing thing called on the flywheel side of the crank behind the timing chain sprocket.
thanks
mine is munched
glad I still have a oem
not the crank bearing... it's on the actual shaft of the crank
it's a inner race bearing I figured it out and I already replaced the crank.. thanks for reply
Where can I get the tools?
Any info on free play in crank after cases are together?
You shouldn't be able to feel any vertical play in the rod big end. Horizontal play in the bearings is normal until you get the main drive gear bolted on. That should hold the crank in place against the bearing. Hopefully that's what you're referring to!
Hello, how much worry should a bit of play in the oil pump shaft cause?
In and out play isn’t a big deal. Excessive horizontal play isn’t good. That being said, I’ve never had to replace oil pump components on a running bike. If you’ve had an engine failure that might have ran debris through the pump, then replace all of the pump components.
@@CoteMotorcycles we only noticed the play due to new outer case being installed due damage to the old one, bike was never run without oil or had debris in the case, it has done over 300 hours though and has sone movement on the shaft horizontally/vertically though, are those little 9mm bearings not the best design for the purpose/load on them?
Hey I commented on one of your other videos saying about my 2007 Honda crf250r leaking crank oil seals. I've went and bought the tools I will need to get the seal out but are you 100% sure I can pull the seals out and putting in new ones without splitting the engine??? Please reply as soon as soon as possible and if you could do a video on how to do it that would be amazing
And if I was going to do the crank seals do I have to do both sides and can both sides been replaced without splitting the engine?? Sorry for the hassle I just don't want to fuck it up thanks a lot. Ben
+SpeedDemon they can be replaced without splitting the cases but there's a reason they failed. Bearings have excess play maybe.
hi when you removed your stator cover was there a seal stuck on the crankshaft in front of the flywheel nut.. mine is a 450x
+GoBoardCanada no I checked thy when I put it in the crank had push and pull play but not up and down and I was told that was OK and I mean it runs fine now
+SpeedDemon I can upload a video/picture of the seal on shaft if that will help you?
For crf 250 r 2005 is possible?
My oil pump not spinning any edvice
Might be missing the pin that engages the shaft to the sprocket. The circlip that holds the sprocket onto the pump shaft could also have fallen off and the gear is disengaged from the drive gear.
Katy Perry background music feels oddly appropriate.
any tips to remove the oil strainer plate at 2.21 I broke mine undoing it :(
I'm not sure what kind of advice I can give in that. It just sits in there with an o ring and rubber grommet. If you broke it, you'll need to buy a new one.
+GoBoardCanada thanks I have already ordered new 1 .. next time I guess I'll try use my finger to stop the plate turning upwards
check out my engine noise videos it is of the engine seal rubbing on my cam chain
these engines do not constitute a basic mistake !!!
crankcase bolts toruque for honda crf250r 2017 please?
You should get a manual. There’s a link in the description where you can download one for your specific bike.
@@CoteMotorcycles i have owners manual and service manual and trust me i cant find it
@@s1ck106 it should be in a service manual. I’m not sure what they want exactly for a 2017 but the pretty much everything else runs about 80 inch lbs or 7 ftlbs for the 6mm (8mm head) fasteners.
is $500.00 the right price for just the stock crank ?
Robert Gregor should be able to get a hotrod crank for around $300 I think.
GoBoardCanada thanks, ktm out here is trying too charge me $500 for a stock , i already have the big bore kit , its bored too a 508 but i think $500 for a stock one is too expensive, u also dnt feel right about mixing stock parts with racing parts, they say the stock is better lol whats yur thoughts on that sir ? i live in canada by the way but still it shouldnt be that expensive, i already put $7500 in that engine n only rode it for 10 hours and now they are saying i gotta put another $3200 in it now
Robert Gregor ktm's can get pricy for sure. I've run oem parts with aftermarket no problem. The hotrod cranks I've measured have never been more than a couple thou out.
Robert Gregor I built a 508 crf and the TOTAL cost of a stroker crank, big bore, gasket kit, crank bearings, can chain ect was under $800 CAD from a supplier off of eBay. The labor is another story.
GoBoardCanada ok , my buddy says that the stock would be better for what im running, little bit less power but he says the bearings and stuff is better, i just dont wanna have too rebuild it again , this thing is bad luck for me , i should of stuck with yamaha lol i got getter luck
I have a 2004 crf250rand took it apart and I found a small oil seal and don’t no where it goes can someone help me
TheTwo4Dawn look me up on Facebook (cotemotorcycles) and send a pic.
GoBoardCanada 👍
Could someone tell me the torques of each bolt? please
Sebastian Torres download a manual for $10 for your specific bike. Torques change from year to year.
I only need the torques of the bearings of the transmission shaft and the one of the bolts lock crankshaft bearing, I have the user manual but those torques are not in the manual
Crf250r 2009
CoteMotorcycles donde puedo comprarlo? Es el manual de taller o el de usuario?
Sebastian Torres quick google search will get you a manual. The crf's came with service manuals.
CoteMotorcycles thanks! I didn't look in english only in spanish. I got it! Thanks and in zorry
A Honda is known to drop rods or balancer shafts why not replace all bearings it makes no sense to useold ones
I've rebuilt hundreds of these and only a few had bad trans / balancer bearings from water ingestion. Crank bearings should be changed every time the crank is replaced but the trans bearings are fine to reuse if they feel smooth and there hasn't been any water contamination.
If you want to replace all the bearings every time you're in there, that's an excellent way to ensure you don't have any problems on the trail. It's just too expensive and time consuming for me to bother with it, considering I've never run into problems reusing them. Most customers of mine want to spend the least money on rebuilds as they can. Frequent oil changes with good oil will make sure those bearings last longer than the rest of the bike.
Thanks for watching and leaving a comment!
whats a good range torque wrench to purchase solely for most of the casing bolts 0-?? inch lbs? and 1/4 in. drive I assume for case bolts..and what about the torque on the gear bolts..I have a crf450, what did you personally torque your gear bolts to?
zen pro they would EA h have a SPECIFIC torque value which is stated in a shop manual which you can easily pick up for 20 bucks off amazon. If your contemplating the torque range you need I think you ought buy a manual because unlike your axle and brake caliper bolts etc, inside your engine needs to be RIGHT, and properly torqued.. It's not worth a stupid mistake.
cool i have a 2 stroke but still u r right the shop gets a hundred an hour. fuk them a good mechanic can do it in no time the fukers still make out. more 2 and 4 stroke owners need to work on there own bikes.
How long should this take for a first timer?
Andreas Jönsson really depends on your mechanical aptitude. Takes me about 8 hrs from pulling the seat off, rebuilding the motor and starting it up again. If you're comfortable on the tools, I would double that time.
-cote motorcycles
Монтажкой вскрывать половинки.....
L
Please help me, I have a CRF 250r 2006, the transmission oil is in conflict with the engine oil, ah bnm, an idea please
Crank seal most likely. Could have been put in backwards or the seal failed.
@@CoteMotorcycles okay, do you think the shaft seal is bad?
@@erlenspierre3157 you’ll have to take it apart and see. I’ve personally never seen a crank seal fail on its own but have seen them installed the wrong way, which would likely cause cross contamination. You can send me pics etc over FB messenger as your taking it apart and I can try to help as much as I can.
@@CoteMotorcycles oke