Just learned a lot i appreciate that, my 05 crf250x supermoto locked up last spring but last night i got it unlocked tore into it timing was good valves where lil tight though maybe the flywheel or stator was broken an thats why it locked up drained the oil it looked good pulled the oil filter its was loaded with bronze now i know it was crank failure
Just made the same mistake of putting the guide in upside down, got the cam in and everything but couldn’t get the valve cover on. Time to tear it back down😭
for you, my friend, your video is very nice, I want to ask you, I have a crf 450 r 2008, the manufacturer says to change the piston and springs every 15 hours, I don't use it as a racer, and I've owned it twice and you can see the piston that it never has the thickness on the bottom side is 95.86 what should I do, change it ?
Ive got an 04 crf 250x, how long did you take to rebuild your engine, im going to tear mine apart and do a full rebuild. Never even been inside an engine before
@@bradleyhanson2654 if you have all the right tools and parts on hand I’d say a full rebuild can take you couple days worth of time. But I generally work on my projects in the evenings and weekends while waiting on parts and the head to be worked on (head service can take around 2 weeks to ship back). So I’d say it can take a month or so
If I sent u my 2007 motor would u run through it and check it out have a issue with it pouring oil out my breather tube until there is no more oil left in the motor if so how much
I need a bigger shop at this point and have a press. But I’ve never cracked a a case in my 14 years of engine builds. I get the cases hot enough to where I don’t have to hit hard anyway.
man, you know your shit around these bikes! As an experienced mechanic, which motocross bike would you say has lowest running costs and best reliability in long term perspective?
Thanks! I would say the Honda CRF lineup is pretty good. My reason is because they are super easy to work on, there’s an abundance of oem and aftermarket parts and I’d say they’re pretty reliable. I’ve rebuilt a number of these bikes and they can take a beating. I also think they handle very well and feel the lightest. They don’t have the quietest engines but they run really good. I’ve always heard Suzukis having tranny issues and Suzukis are the only bikes. Or without electric start. Yamahas have a great engine too but have an extra valve to worry about…drives the cost up a little more. Kawis are nice bikes too but have a pretty noisy engine in my opinion and oem parts are pretty pricey. I also really love KTM. Very well built and reliable. But they are very expensive and OEM parts are expensive.
Wow! That's some answer :) I am glad you mentioned KTM. They get a demonized for being unreliable by most riders. I ride street bikes for couple years now, and I am considering to give it a shot with an MX bike. I am Hesitant between YZ125 / YZ250F / SX125 / SX-F 250 (I would buy brand new) I like the Yamaha most but I may get a very good deal on new KTM since I work in company that has a partnership with KTM (same goes with parts, I can get them cheaper and I live in Europe so they are easily available). I actually like the SX125 most but I have seen some horror stories online about bike breaking down after literally couple of hours on it. What would be your recommendation mate? @@motion_mx
Great vid of a rebuild. Never watched a full rebuild video before. Pretty cool to see. Your attention to detail is 👌🏼
Thank you sir!!
Very cool build..i once did a yz 250 2-stroke top & bottom..what a long process..but you did a great video & rebuild..😁👍🔥
Awesome work, easy to watch along and loved how you described your processes even down to how you made mistakes along the way without editing it out
Thank you, appreciate it!
Just learned a lot i appreciate that, my 05 crf250x supermoto locked up last spring but last night i got it unlocked tore into it timing was good valves where lil tight though maybe the flywheel or stator was broken an thats why it locked up drained the oil it looked good pulled the oil filter its was loaded with bronze now i know it was crank failure
Thanks! Fortunately this engines are easy to rebuild
Awesome man I got a 2016 with a blown motor if you are able to talk
Message me on instagram @motionmx_
One of my favourite vids much more experienced thanks
Just made the same mistake of putting the guide in upside down, got the cam in and everything but couldn’t get the valve cover on. Time to tear it back down😭
Dude... same 😭
😂glad I'm not the only one
Great job, like it very much. What is E93 ? Sorry, i didn’t heard about it before 😊
@@rons215mg9 e93 has an octave level of 93. As a bonus this particular e93 that my local shop sells is ethanol free
@@motion_mx thanks 🙏🏻 best regards
for you, my friend, your video is very nice, I want to ask you, I have a crf 450 r 2008, the manufacturer says to change the piston and springs every 15 hours, I don't use it as a racer, and I've owned it twice and you can see the piston that it never has the thickness on the bottom side is 95.86 what should I do, change it ?
Where you located?
Love the video , currently working on a crf250 rebuild. How much did you spend on repairing the head ?
Thanks! The head work was $523 plus cost of new valves
What city and state are you located in? I would like to rebuild my 250R as well.
Where are you located? I might have to send my bike to you if anything happens to it!
Ive got an 04 crf 250x, how long did you take to rebuild your engine, im going to tear mine apart and do a full rebuild. Never even been inside an engine before
@@bradleyhanson2654 if you have all the right tools and parts on hand I’d say a full rebuild can take you couple days worth of time. But I generally work on my projects in the evenings and weekends while waiting on parts and the head to be worked on (head service can take around 2 weeks to ship back). So I’d say it can take a month or so
Great video man but why does the bike sound so weird?
If I sent u my 2007 motor would u run through it and check it out have a issue with it pouring oil out my breather tube until there is no more oil left in the motor if so how much
Can you list what tools I would need to do this ?
And parts list
Do you know where i can get parts for dirt bike in europe?
I just got a Kawasaki kx250 f ...it's locked up need your help bro
Not sure hitting bearings in when the case isnt on a solid surface is best idea. U prob know better than me but with my luck that case would split.
I need a bigger shop at this point and have a press. But I’ve never cracked a a case in my 14 years of engine builds. I get the cases hot enough to where I don’t have to hit hard anyway.
man, you know your shit around these bikes! As an experienced mechanic, which motocross bike would you say has lowest running costs and best reliability in long term perspective?
Thanks! I would say the Honda CRF lineup is pretty good. My reason is because they are super easy to work on, there’s an abundance of oem and aftermarket parts and I’d say they’re pretty reliable. I’ve rebuilt a number of these bikes and they can take a beating. I also think they handle very well and feel the lightest. They don’t have the quietest engines but they run really good. I’ve always heard Suzukis having tranny issues and Suzukis are the only bikes. Or without electric start. Yamahas have a great engine too but have an extra valve to worry about…drives the cost up a little more. Kawis are nice bikes too but have a pretty noisy engine in my opinion and oem parts are pretty pricey. I also really love KTM. Very well built and reliable. But they are very expensive and OEM parts are expensive.
Wow! That's some answer :) I am glad you mentioned KTM. They get a demonized for being unreliable by most riders. I ride street bikes for couple years now, and I am considering to give it a shot with an MX bike. I am Hesitant between YZ125 / YZ250F / SX125 / SX-F 250 (I would buy brand new) I like the Yamaha most but I may get a very good deal on new KTM since I work in company that has a partnership with KTM (same goes with parts, I can get them cheaper and I live in Europe so they are easily available).
I actually like the SX125 most but I have seen some horror stories online about bike breaking down after literally couple of hours on it. What would be your recommendation mate? @@motion_mx
Who can rebuild my bike for I got a top and bottom end kit for it I had crank failure
Near sc
What would a build like this cost from you
This build was just under $2500 with parts and labor.
Cool man. I’m tearing my 06 apart. Lower end is locked up. Guess I gotta take the whole motor off. Worse Honda I ever owned. Ugh.