Finally someone who takes their time to explain in detail has passion for what they're teaching super super super great job you're a very good instructor God bless thank you genuinely
Oh my god man, thank you so freaking much for this video. So professional, and you show every single step. Putting my 07 cr85 motor together right now, thanks again. You’re the man!
So glad it helped you! Knowing I could help someone else is what drives me to keep making videos! I have a new series coming soon on a CRF70 pitbike restoration.
@@samuelschiller4457 I have one and went through the top end recently. Maybe just for educational purposes, I could just rebuild it all. It would be fun, thats for sure. I did video the top end work I did on it on my channel if that helps you! Thanks for watching and please subscribe if you havent yet!
You help me disassemble and assemble my cr80 and I never built a bike before. Thank you so much. I did have to buy the service manual to see the things that you didn't show in detail but you're a great teacher.
This video literally shows everything you need to know about taking apart and reassembling this engine...and it’s exactly what I need cuz I’m rebuilding my cr80 thanks a lot man
Hey Sean! Its funny, I did that video some time ago and, for me, all I see is how much better I should have made it! But, it IS correctly done, so thats the most important part! Its been pretty popular too. That one has gotten a lot of attention since it was published. Thanks for watching! Subscribe too, if you dont mind and havent already! Take care!
Thanks Bluegrass! At least the channel keeps growing all the time! New stuff coming soon. Took a couple of weeks off after that pit bike build. But, I have some new content I’m working on right now! Thanks for watching!
Thank you for your videos! I just did my wife's CR85. The one thing I got wrong was the Kickstarter. It looked to me like the spring was entering the rod at the 6 o'clock position in the video. I took it apart twice before I purchased the manual and realized it needed to be at the 12 o'clock position so as to separate the gears when the block on the bottom gear hits the stopper plate! I should have been looking for the split in the pink plastic piece. I am an idiot! Great video my friend!
Youre are not an idiot. I put the water pump seals in wrong not long ago! Nobody is perfect! And, its a lot of steps to do just perfectly when you build a motor. Its not easy to do so many steps in a specific order and never make a mistake. At least your tried to do the job yourself and you learned!
Hi AJ! Thanks for the kind words! It’s happening slowly, but surely. I figure if I just keep raising my level, the subs will come! I have a new engine build video coming in a few days. I think its way better than this one. Tell me what you think of it after it comes out!
What kind of oil do use for the transmission/clutch? Ive followed your video and rebuilt my sons cr85r. just curious about fluids. What about engine ice compared to normal anti freeze?
Hi. I use the Honda HP. There is no reason to get fancy with coolant and you never want to second guess your choice - wondering if it is somehow not compatible with your bike. Honda stuff is cost effective and wont let you down. amzn.to/4aGBrjU
I can’t get my clutch cover to go back on any idea what I did wrong it seems like it’s getting caught in the middle almost because I can push either side down. It’s just teeter tottering.
Very good tip on the grease ive always done that myself to hold the gasket in place & speaking of bolts falling inside the engine ive just ordered one of them scope cameras that connected to your phone they are very handy specially with the little magnets & hooks you get with them
Brian, I can't tell you have great your video is. I learned a few things from this, and will try the lube on the case gaskets. Thanks brother and I just subscribed.
Hey Daniel! Its funny, as the videographer/creator, all I see is all the things I could have done better! But, I am satisfied with information shared in this one. I just feel I could do the production part much better now. But thank you for you kind and positive feedback and for subscribing. I have a new engine build video I’m working on that should be up next week. If you get a chance, check it out. I think the production value will be much higher than this one. Thanks again! Take care!
@@brian.d.mobley that sounds great and I’m looking forward to the next one! I understand the feeling of doing more and better, but we learn as we go! Thanks Brian!!!
@@brian.d.mobley Thank you for the quick response. I had to remove the pickup to clean it because there was surface rust and dirt on the Flywheel. I see there is an adjustment on the mounting tabs on the pickup they will move it quite a bit inward and outward away from the Flywheel. I just read someone said to use a spark plug box top and slide that between the raised part of the Flywheel and the pickup and tighten it there. I would think if there were oval holes in the pickup that there has to be an adjustment? Can not find a. PDF for my 07 anywhere to confirm this.
Excellent video!, Could you use a shop press instead of the crank case installer tool? I used my press to remove the crank from the case without problems
Sure. I just try to use tools in my videos that are as basic as possible and that are available to the average home mechanic. By all means, use the press!
Thank you for the detailed video! I am restoring a 1984 Honda CR80 and have a question concerning the fuel mixture. The original Honda service manual states 20:1 which seems heavy compared to the 32:1 I have always used. What are your thoughts on this?
Hi Tony. Talk about a can of worms! Nothing in the dirt bike cosmos is more debated that fuel mixture on a two stroke. The shortest answer is; 32:1 is plenty if you are using modern, synthetic or partially synthetic oil.. Thanks for watching!
Can you install the shifter assembly without removing clutch basket or anything else besides the side cover? I took my cover off to Check the clutch’s and I can’t seem to get the kick start assembly back in with spring on shaft
Muy buen video. Tengo una duda espero me pueda ayudar. El estator se lo adaptaron? por q el original tiene una sola bobina. Le ago esta pregunta por q ami cr85 2004 se le daño la bobina y queria saber q bobina le puede qedar. Gracias
We were all beginners at one time! At least you have the courage to try! And, yes! All the way down. If you don’t have the service manual for your bike, you really need to get it. You will make a mistake without it.
Excellent vid, I'm getting ready to do this with a WR200 engine and still waiting for a few parts. The other day I put my (old) crankshaft in the freezer and heated up the old main bearing inner race to do a test fitting and it slipped straight on (and then became impossible to remove without a bearing puller when it reached room temperature so all good). My only concern is how do you keep condensation from damaging the main and big end bearings? After a few minutes out of the freezer my crank was wringing wet as it warmed up. Thanks, hope you can help!
Hey Alex! Great question! In the short run, you can spray the crank with WD40 after installation. However, if you store your bike in a garage or other space that has no humidity control, condensation will always affect the internals of your motor after assembly. To mitigate this, start the motor once a month or so and let it warm up to operating temperature. Thanks for the comment and for watching!
Hey Brian, still working on the 85 block, I have these 4 tiny tiny cylinder like metal pieces, and I can't find anywhere where they go, by chance you know?
A good way to explain them is the pieces on the end of the arms that go into the gearshift drum, like that but a little smaller, and I thought they had something to do with the drum but I can't find on any website what they re
Hi Vinnie. Are you sure you have the plunger rod installed correctly inside the clutch cover? Clutch springs tightened all the way? Without having the parts in front of me, Its really hard to diagnose odd problems like that.
Hi Vinnie! Socrates believed that the best method to teach is to ask questions of his students - forcing them to think for themselves. With that in mind, in the scenario you just posited, when would you install the wrist pin and wrist pin circlips through the piston?
Would you recommend lubing the case faces? You are talking about it at 3:37 but I’m just scared that if I do this to the cr85 I am working on it will create an improper seal. I am literally having to split the cases on my cousins cr85 just because the previous owner didn’t put the crankcase gasket on right so it didn’t seal directly below the crank so I don’t want the same issue to happen again. Thanks
Hey Bluegrass. The reason you lube the gasket or the faces is to make it easier to disassemble the cases if they need servicing in the future. But, you don’t have to. Most engine builders that I know lube either the gasket or the crankcase face. I now lean toward lubing the gasket because it’s more convenient. If you want to see how that’s done, check out my most recent engine build video where I rebuilt a pit bike motor.
Hi Jacob. Your best bet is to look at the microfiche on the MotoSport or Rocky Mountain ATV website, find your part, and then order from them. Thanks for watching!
@@coloradodirtbike5930 Thanks so much! I appreciate the compliments. Its a lot harder than it might seem to make these videos, so I’m really grateful to those willing take the time to share positive feedback. Thanks again!
How do you set the timing on one of these engines I have an 80 but they look quite similar. Thanks In advance btw love how meticulous you are with this
@@brian.d.mobley really? Doesn’t the fly wheel have a magnetic spot on it or something that tells the spark plug when to fire? Or can you just put the flywheel on anyway and it doesn’t matter? Thank you lots
@@seanraymond9529 It does hav that magnet spot. The flywheel is aligned with what’s called a “woodruff” key. If that key is installed on the end of the crankshaft, the flywheel will only go on if the key on the crank and the slot on the flywheel are aligned. If you do that, you’re good on the flywheel. On the stator, just bolt it back on. Do that and your “timing” is set
Hi Brian Great job on the video just wanted to know if you had any advice on the inter clutch hub seems to be getting hung up and leaving clutch plates open 04 CR85RB
Im so sorry for he slow reply Bob! That is a tough question. Its hard to know how to respond to questions like that without having the motor in front of me. It could be a number of things. Something as simple as not having the right friction discs could be the root cause. Its so hard to comment intelligently on that one...
@@brian.d.mobley Thank you Brian new plates and steels the outer right side cover seems to push throwout bearing in do you know if the four Towers on the pressure plate can be cut down
@@bobcurtice828 You can, but dont!!! Would you like to send me some pic or video to show me what you are experiencing? Im busy with a lot of other stuff, but if its not a big problem, Ill try to help.
@@bobcurtice828 You are brave! I don’t think I’d have had the courage to cut on my clutch housing like that! But, kudos to you that you made a choice that worked!
Hi Kerm. Im not sure exactly what you mean. The oil pump is installed in the video. The seal orientation procedure has a link that appears in the upper right corner of the video clip at the point where the water pump installation procedure is detailed and that same link is found in the description box as well. Hope that clarifies. Thanks.
@@brian.d.mobley Sorry mate it's for a CR85 Water pump bearing and seal video, tried but the link doesn't appear. Please can you send me the link Kind Regards David Hollington from the UK 🇬🇧
Excellent question!!! Cut the excess away before installing the cylinder being careful no to let any of the gasket material fall into the engine cases. Good question! Thanks for watching!
Hey i have a 1986 cr80r, are the shifters the same through the years or is it a specific shifter like I'm seeing? It has a stripped shifter shaft (which i found a replacement) now i just need to find the shifter. Any recommendations?
Hey Daniel! Id hate to tell you something that might be wrong. I dont know that off of the top of my head, but its easy to research. Go to a site like Rocky Mountain ATV and search their OEM parts. You can search by year and model. If the part numbers are the same between years, you are good to go. If you are on Facebook, you can join the CR85 Owners group and post the question there also.
@@trytonbennett4214 Both ways have their advantages. With kits, sometimes the parts aren’t the best. When you buy individually, you can usually buy OEM, which is the safest way to go.
@@brian.d.mobley I agree strongly, only being the fact that there was a few missing parts, since I completely destroyed the crank, piston, jug, and the bearings there was a few forgotten parts haha. Also I do have one last question, in the first 5 or so mins of the video u slid that rubber piece into the metal slit there, what is that part called? I wasn't able to find the one I took out lol
@@trytonbennett4214 Hey! “Rubber piece into metal slit” is just not enough for me to know about which part you are referring, but there are many sites that have good microfiche showing every component. Try Rocky Mountain ATV or Motosport. I’m sure you can find your answer there.
@@brian.d.mobley sure looks factory to me. And considering it was basically a basket case when I got it and the kid beat the hell out of it I'm gonna assume he probably didn't have the cylinder bored and machined for a sleeve. 😂
@@pavementpariah7342 Im not sure about the history of this particular cylinder and what you assert certainly seems logical, but I can only state that the only surface treatment provided by Honda to the bore of a 2007 CR85 cylinder is Nikasil. Im sorry I cant help further.
@@brian.d.mobley thanks Brian. My son and I live in Houston area (friendswood and Rosharon) so I’m happy to subscribe We’re also going to tackle rebuilding a cr85rb ourselves. We had someone supposedly rebuild it only to find out that he charged us 2000$ for an expensive oil change. Lesson learned
@@cd1168 Go Texas!!! And, I hate to read that about the rip off. Im actually doing a new CR85 for my wife right now. Its going to be top shelf and really cool. I'll post some videos about the build so stay tuned! And THANK YOU for the subscription. Its always nice to get new followers. It is way more work to run a channel that it seems! Video production is a lot of work. I have a lot more respect (and understanding) of the work of people like Ron Howard and Steven Spielberg now.
@@cd1168 If you are on Facebook, join the "CR85 Owners" group. Im on there all the time and we have good files for download. Not to mention tons of help.
Hi Hasek. Im so sorry, but I dont know that off the top of my head and I dont have any open motors at the moment to determine the answer. Hopefully you have both sizes and can try them out for yourself. Thank you for watching!
@@brian.d.mobley Thanks for answer. I found the answer to my question - the bolt has a wrench size of 14mm. Thanks for very interesting and useful video!
@@Вродеигачавродебасик I’m so glad you were able to find that. I just couldn’t recall and didn’t want to give you the wrong information. Thanks so much for the kind words and for watching my channel!
How far is the shifting drum supposed to move cause mine doesnt feel like any other dirtbike tranmission ive ever used but i have all 6 gears but it doesnt click into gears
Hi Send Memes. Im not sure exactly what you mean regarding drum movement. Lateral movement like runout or rotational movement while shifting. If the engine is operational, can you share with me whether the transmission comes out of gear during operation?
@brian.d.mobley it pops out of gears in first and second like there false neutrals and the shifting drum the pins that slide out into the drum to pick the slot to move it in the next gear don't do anything unless you actaully jam the shifter or kick it down or up one thing I do know tho is I will never be buying another honda after this bike tho complete lemon clutch wont engage nothing works on it and I've put over 50 hours into this engine alone
@@brian.d.mobley and the engine was operational till I stalled it in 4th gear cause my clutch doesn't work at all when I've put it together exactly how everyone says just snug not overtightened so I have no idea I'm just gonna sell this thing for cheap
If you would like to sell it, up to you. You can also join our CR85 Owners Group on Facebook for more tips and helps from a community of CR85 owners. facebook.com/groups/545886302210401
Hi Richard. A few things come to mind. The head may be warped. I go over that in another video titled "Tips and Tricks for Measuring Your Top End." Another is the torque specs for the head are not correct or not the same on each of the four head bolts. Check these first. If your problem is not solved, let me know.
Hi brian sorry to interrupt but i also have a cr85 2007 that needs a rebore. I have taken it to my local bike shop and they said its got a steel sleeve in the barrel and it cant be rebored / honed have u any idea if this can be fixed ?
@@jakeubbb265 I’ve seen those sleeves on sites like eBay. Honestly, I’ve never dealt with one so I’m not really positive about honing or boring if a sleeve has been installed. However, look up Millenium Technology. The do Nikasil repair and have a good reputation. They answer me promptly when I have cylinder questions. Email them. They are better equipped to give you a reliable answer.
@@user-bl8bn4kb8m Im in Houston, so the shipping is no big deal. You can email me if you like and we can discuss it. No pressure at all if you decide not to do it. sterlinganadar@gmail.com
@@brian.d.mobley that's good to know man! Means i won't have to worry about my bike blowing up when i fit a new crank💪🏼 thanks for the feedback, much appreciated!
I can email you the service manual if you like. Or, you can join our CR85 group on Facebook and get the manual there - along with tons of free help! facebook.com/groups/545886302210401
Thanks for reply the head when I got bike was wrong so I got one from ebay but I didn't know the other was wrong and I'm trying to tq down in the bike so , lol I'm over it hhhahaha
Not sure what lube has to do with end gap, but I made a complete video on top end measurement and I’ve never once come across an ring that was out of spec on a cylinder that was within service limits.
I’ve put my kick start shaft in and aligned everything and it still makes a weird clicking noise when I spin the crank over acts like like it’s not in right but like I said everything I’ve checked and rechecked everything numous times any thoughts
Hey Mike. Is this kickstart on a CR85? And, spinning the crank makes your kickstart shaft click? If yes, how are you spinning the crank? BTW, there is a very famous skateboarder from the 80’s named Mike McGill and I have one of his boards to this day!!
@@brian.d.mobley haha I’m not the skate boarder, Cr85r, I’m spinning the clutch counter clock wise, when I put the clutch cover case on and tighten everything thing up I spin the magneto counter clock wise my kick start shaft will snap every 1/4 to half turn
@@mikemcgill6716 I’ve not heard of that sort of problem, Some thoughts on possible causes. Teeth missing from any of the related gears. Primary, clutch hub, kickstart gear. Have you checked your assembly against the factory service manual? Sometimes things are missed. Like so many of these problems, it’s hard to diagnose without the parts in front of you.
Finally someone who takes their time to explain in detail has passion for what they're teaching super super super great job you're a very good instructor God bless thank you genuinely
Thanks so much for the kind words! I’m glad it helped you. That was a fun video to make.
❤😂
@@brian.d.mobley Hello, I have a question, the Honda Cr 80 cc 2t 2004 engine is the same as the 2007 model. Are the engines identical? 😊
@@madalinhornea2440 Essentially, yes.
Oh my god man, thank you so freaking much for this video. So professional, and you show every single step. Putting my 07 cr85 motor together right now, thanks again. You’re the man!
So glad it helped you! Knowing I could help someone else is what drives me to keep making videos! I have a new series coming soon on a CRF70 pitbike restoration.
Hopefully you can make a vid on rebuilding a crf250r
@@samuelschiller4457 I have one and went through the top end recently. Maybe just for educational purposes, I could just rebuild it all. It would be fun, thats for sure. I did video the top end work I did on it on my channel if that helps you! Thanks for watching and please subscribe if you havent yet!
You help me disassemble and assemble my cr80 and I never built a bike before. Thank you so much. I did have to buy the service manual to see the things that you didn't show in detail but you're a great teacher.
Hi Bigship! So glad it helped you! Thanks for watching!
you should be at 1 million subs great video
Oh man! So nice of you! Thanks.
This video literally shows everything you need to know about taking apart and reassembling this engine...and it’s exactly what I need cuz I’m rebuilding my cr80 thanks a lot man
Hey Sean! Its funny, I did that video some time ago and, for me, all I see is how much better I should have made it! But, it IS correctly done, so thats the most important part! Its been pretty popular too. That one has gotten a lot of attention since it was published. Thanks for watching! Subscribe too, if you dont mind and havent already! Take care!
@@brian.d.mobley oh I have already haha and you too!
@@seanraymond9529 Im going to be building up a new CR85RB this summer, stay tuned! Its gonna be baller!
You saved my life! Better explanation impossible! Thank you
So glad it helped! I’m about to produce a similar video based on a KLX110. Thanks for watching!
YOURE VIDEOS ARE GOLD YOU SHOULD HAVE 1M SUBS THANKS MAN
Thanks Bluegrass! At least the channel keeps growing all the time! New stuff coming soon. Took a couple of weeks off after that pit bike build. But, I have some new content I’m working on right now! Thanks for watching!
Excellent, nice to finally see an actual mechanic doing and explaining this job. A genuine Thankyou!!
I love your channel. You do everything the right way an very satisfying to watch. Wish i had found you sooner
That is probably the nicest compliment anyone has paid me regarding my channel. Let me extend my most sincere and heart felt - THANK YOU!
Thank you for your videos! I just did my wife's CR85. The one thing I got wrong was the Kickstarter. It looked to me like the spring was entering the rod at the 6 o'clock position in the video. I took it apart twice before I purchased the manual and realized it needed to be at the 12 o'clock position so as to separate the gears when the block on the bottom gear hits the stopper plate! I should have been looking for the split in the pink plastic piece. I am an idiot! Great video my friend!
Youre are not an idiot. I put the water pump seals in wrong not long ago! Nobody is perfect! And, its a lot of steps to do just perfectly when you build a motor. Its not easy to do so many steps in a specific order and never make a mistake. At least your tried to do the job yourself and you learned!
Why the hell do you not have more subs, your work is outstanding.
Hi AJ! Thanks for the kind words! It’s happening slowly, but surely. I figure if I just keep raising my level, the subs will come! I have a new engine build video coming in a few days. I think its way better than this one. Tell me what you think of it after it comes out!
@@brian.d.mobley Alright man definitely my favorite channel now haha
@@490Adrian I’m so happy you’re enjoying it. I keep trying to improve with every video.
Thank you for the videos!!!
Glad you like them! Thanks!
The best video saved my day
So glad it helped!
Hay you did a great job explaining everything but I was just wondering what would happen if you installed the idler gear on upside-down
I’m not 100%, honestly.
What kind of oil do use for the transmission/clutch? Ive followed your video and rebuilt my sons cr85r. just curious about fluids. What about engine ice compared to normal anti freeze?
Hi. I use the Honda HP. There is no reason to get fancy with coolant and you never want to second guess your choice - wondering if it is somehow not compatible with your bike. Honda stuff is cost effective and wont let you down. amzn.to/4aGBrjU
@@brian.d.mobley ok thanks. I appreciate it! Great videos by the way. Helped me every step of the way! Thanks for putting these videos on TH-cam
@@Francismadore So glad you found it helpful!
I can’t get my clutch cover to go back on any idea what I did wrong it seems like it’s getting caught in the middle almost because I can push either side down. It’s just teeter tottering.
It’s so hard to tell things like that unless I have the motor in front of me.
Very good tip on the grease ive always done that myself to hold the gasket in place & speaking of bolts falling inside the engine ive just ordered one of them scope cameras that connected to your phone they are very handy specially with the little magnets & hooks you get with them
I like to grease them because it makes it easier to take the whole thing apart later, if needed.
@@brian.d.mobley definitely mate very good tip always
@@officialmysteriousrider6327 I have a new engine build video that should be ready by Monday or Tuesday next week. Hope you like it too!
@@brian.d.mobley ive pressed the bell Brian so will watch out for it mate but sure ill like it
@@officialmysteriousrider6327 I like making engine assembly videos. So I hope it turns out OK!
Brian, I can't tell you have great your video is. I learned a few things from this, and will try the lube on the case gaskets. Thanks brother and I just subscribed.
Hey Daniel! Its funny, as the videographer/creator, all I see is all the things I could have done better! But, I am satisfied with information shared in this one. I just feel I could do the production part much better now. But thank you for you kind and positive feedback and for subscribing. I have a new engine build video I’m working on that should be up next week. If you get a chance, check it out. I think the production value will be much higher than this one. Thanks again! Take care!
@@brian.d.mobley that sounds great and I’m looking forward to the next one! I understand the feeling of doing more and better, but we learn as we go! Thanks Brian!!!
Thank you! @@DanMX2112
Was hoping you showed how to gap the magneto pickup. Any idea what the gap is or best way to go about it?
Hi Jay. The pickup and flywheel are not adjustable, so if you just assemble the ignition as shown, you should be good to go. Thanks for watching!
@@brian.d.mobley Thank you for the quick response. I had to remove the pickup to clean it because there was surface rust and dirt on the Flywheel. I see there is an adjustment on the mounting tabs on the pickup they will move it quite a bit inward and outward away from the Flywheel. I just read someone said to use a spark plug box top and slide that between the raised part of the Flywheel and the pickup and tighten it there. I would think if there were oval holes in the pickup that there has to be an adjustment? Can not find a. PDF for my 07 anywhere to confirm this.
Excellent video!, Could you use a shop press instead of the crank case installer tool? I used my press to remove the crank from the case without problems
Sure. I just try to use tools in my videos that are as basic as possible and that are available to the average home mechanic. By all means, use the press!
Hey Brian what was the torque spec for the cylinder head nuts
Hey Jordan. I can't believe I didnt detail that! 26Nm. Same as the cylinder. Good eye! Thanks for watching!
Excellent👏👏 what is the problem sir if the oil will be come ah milky
Check this video at time point 17:43. th-cam.com/video/EuXe8mQcdqk/w-d-xo.html
Thank you for the detailed video!
I am restoring a 1984 Honda CR80 and have a question concerning the fuel mixture. The original Honda service manual states 20:1 which seems heavy compared to the 32:1 I have always used. What are your thoughts on this?
Hi Tony. Talk about a can of worms! Nothing in the dirt bike cosmos is more debated that fuel mixture on a two stroke. The shortest answer is; 32:1 is plenty if you are using modern, synthetic or partially synthetic oil.. Thanks for watching!
Great video Brian!
So nice of you! Thank you!
Can you install the shifter assembly without removing clutch basket or anything else besides the side cover?
I took my cover off to Check the clutch’s and I can’t seem to get the kick start assembly back in with spring on shaft
Muy buen video. Tengo una duda espero me pueda ayudar. El estator se lo adaptaron? por q el original tiene una sola bobina. Le ago esta pregunta por q ami cr85 2004 se le daño la bobina y queria saber q bobina le puede qedar. Gracias
Hi David. If you’ll ask your question in English, Im happy to reply. Thank you.
When installing the clutch do you tighten the springs down all the way? It sounds like a stupid question but I’m new to this 😂
We were all beginners at one time! At least you have the courage to try! And, yes! All the way down. If you don’t have the service manual for your bike, you really need to get it. You will make a mistake without it.
Excellent vid, I'm getting ready to do this with a WR200 engine and still waiting for a few parts. The other day I put my (old) crankshaft in the freezer and heated up the old main bearing inner race to do a test fitting and it slipped straight on (and then became impossible to remove without a bearing puller when it reached room temperature so all good). My only concern is how do you keep condensation from damaging the main and big end bearings? After a few minutes out of the freezer my crank was wringing wet as it warmed up. Thanks, hope you can help!
Hey Alex! Great question! In the short run, you can spray the crank with WD40 after installation. However, if you store your bike in a garage or other space that has no humidity control, condensation will always affect the internals of your motor after assembly. To mitigate this, start the motor once a month or so and let it warm up to operating temperature. Thanks for the comment and for watching!
@@brian.d.mobley All sounds good Brian, thank you!!
Is it possible to get tension on the kickstart spring without taking the clutch basket out?
Do you have to take the clutch apart to put the kickstart shaft back in?
Did you find out what that baffle is called. Misplaced or moved during the build can’t find it on the diagram
Hey Nick! Yes. It’s called a “Grommet Breather”. PN: 11206-GC4-700.
Hey Brian, still working on the 85 block, I have these 4 tiny tiny cylinder like metal pieces, and I can't find anywhere where they go, by chance you know?
A good way to explain them is the pieces on the end of the arms that go into the gearshift drum, like that but a little smaller, and I thought they had something to do with the drum but I can't find on any website what they re
Its seems you figured out your problem.
@@brian.d.mobley that's the thing, they aren't related and not even rocky mountain oem parts can I find them
@@trytonbennett4214 email a pic. sterlinganadar@gmail.com
Using the Maximus assembly grease on the crank bearing is fine for the engine?
Hi Nick. Its MAXIMA, but yes. Inside the bearings themselves, perfectly safe and (personally), recommended.
I have a question every time I put the right case on my plunger arm won’t turn all the way
Hi Vinnie. Are you sure you have the plunger rod installed correctly inside the clutch cover? Clutch springs tightened all the way? Without having the parts in front of me, Its really hard to diagnose odd problems like that.
Can you put the cylinder on and the piston on last? Or can’t you
Hi Vinnie! Socrates believed that the best method to teach is to ask questions of his students - forcing them to think for themselves. With that in mind, in the scenario you just posited, when would you install the wrist pin and wrist pin circlips through the piston?
Would you recommend lubing the case faces? You are talking about it at 3:37 but I’m just scared that if I do this to the cr85 I am working on it will create an improper seal. I am literally having to split the cases on my cousins cr85 just because the previous owner didn’t put the crankcase gasket on right so it didn’t seal directly below the crank so I don’t want the same issue to happen again. Thanks
Hey Bluegrass. The reason you lube the gasket or the faces is to make it easier to disassemble the cases if they need servicing in the future. But, you don’t have to. Most engine builders that I know lube either the gasket or the crankcase face. I now lean toward lubing the gasket because it’s more convenient. If you want to see how that’s done, check out my most recent engine build video where I rebuilt a pit bike motor.
@@brian.d.mobley sure will thanks once again
Hello I have a question What size are the crankcase bolts I lost one I and don’t what size to get to order one?
Hi Jacob. Your best bet is to look at the microfiche on the MotoSport or Rocky Mountain ATV website, find your part, and then order from them. Thanks for watching!
@@brian.d.mobley ok thanks a lot
well done mate, great video
Thanks Nick!
wonder if you can help, my bike has lost it's breather pipe, does it just vent to the open air or is it supposed to connect elsewhere - thanks
Cracking video!
Thanks! Glad you found it useful!
Well done!
Thanks Sumatai!
Was there anything else needed Parts wise to rebuild that motor with the wrench rabbit kit?
Hi Jose. Not in my case. It’s a good kit.
@@brian.d.mobley thank you for fast response. Excellent video too. I'll be referring to your CR80 engine videos many more times.
Is it possible for people to ship their engine and engine kit rebuild to you for you to rebuild it?
Probably. Let’s talk about it. sterlinganadar@gmail.com
Are you using blue loctite or red for those internal engine bolts
Hi CDB! I almost never use red, just FYI. So, any LocTite used would be blue. Thanks for watching!
@@brian.d.mobley much appreciated and amazing job on the channel, I watch your rebuild videos, graphics installation, and others.
@@coloradodirtbike5930 Thanks so much! I appreciate the compliments. Its a lot harder than it might seem to make these videos, so I’m really grateful to those willing take the time to share positive feedback. Thanks again!
Yo man, was wondering where u got the flywheel puller and the dimensions of it. Or a easy way to remove/install flywheel without tools?
In the description now! Thanks! amzn.to/3STII8q
What oil did you out in the gearbox?
I use Honda OEM spec transmission fluid. amzn.to/3Wwn9MZ
How do you set the timing on one of these engines I have an 80 but they look quite similar. Thanks In advance btw love how meticulous you are with this
Thanks for watching! One of the beautiful things about a CR85 is that timing is not adjustable. Just bolt that stator back on. Nothing to adjust.
@@brian.d.mobley really? Doesn’t the fly wheel have a magnetic spot on it or something that tells the spark plug when to fire? Or can you just put the flywheel on anyway and it doesn’t matter? Thank you lots
@@seanraymond9529 It does hav that magnet spot. The flywheel is aligned with what’s called a “woodruff” key. If that key is installed on the end of the crankshaft, the flywheel will only go on if the key on the crank and the slot on the flywheel are aligned. If you do that, you’re good on the flywheel. On the stator, just bolt it back on. Do that and your “timing” is set
@@brian.d.mobley ohhh that makes sense thanks man lol
@@seanraymond9529 sure! Glad to help.
Hi Brian Great job on the video just wanted to know if you had any advice on the inter clutch hub seems to be getting hung up and leaving clutch plates open 04 CR85RB
Im so sorry for he slow reply Bob! That is a tough question. Its hard to know how to respond to questions like that without having the motor in front of me. It could be a number of things. Something as simple as not having the right friction discs could be the root cause. Its so hard to comment intelligently on that one...
@@brian.d.mobley Thank you Brian new plates and steels the outer right side cover seems to push throwout bearing in do you know if the four Towers on the pressure plate can be cut down
@@bobcurtice828 You can, but dont!!! Would you like to send me some pic or video to show me what you are experiencing? Im busy with a lot of other stuff, but if its not a big problem, Ill try to help.
Thank you Brian I ended up cutting 0.040 ths. Off work like it should now
@@bobcurtice828 You are brave! I don’t think I’d have had the courage to cut on my clutch housing like that! But, kudos to you that you made a choice that worked!
Such a good video thanks heaps
Thanks! Glad it helped! Thanks for watching.
Do you have a link for the water pump installed please 🙏
Hi Kerm. Im not sure exactly what you mean. The oil pump is installed in the video. The seal orientation procedure has a link that appears in the upper right corner of the video clip at the point where the water pump installation procedure is detailed and that same link is found in the description box as well. Hope that clarifies. Thanks.
@@brian.d.mobley
Sorry mate it's for a CR85 Water pump bearing and seal video, tried but the link doesn't appear.
Please can you send me the link
Kind Regards David Hollington from the UK 🇬🇧
@@kerm9807 Please look in the description box of the video. You’ll see it. Thanks.
@@brian.d.mobley
Sorry I ment the water pump seal and bearings
@@kerm9807 Again, the link for the video detailing that process is in the description box of the video. Thanks!
Do I cut the gasket after closing the case up the gasket has a line where the piston go do I leave it or cut it
Excellent question!!! Cut the excess away before installing the cylinder being careful no to let any of the gasket material fall into the engine cases. Good question! Thanks for watching!
@@brian.d.mobley no thank you for your video it gave me everything literally everything you have I went and got thanks for the quick response.
@@youkandewitdiysavemoney4881 So glad that it helped you! Keep wrenchin'!
Hey i have a 1986 cr80r, are the shifters the same through the years or is it a specific shifter like I'm seeing? It has a stripped shifter shaft (which i found a replacement) now i just need to find the shifter. Any recommendations?
Hey Daniel! Id hate to tell you something that might be wrong. I dont know that off of the top of my head, but its easy to research. Go to a site like Rocky Mountain ATV and search their OEM parts. You can search by year and model. If the part numbers are the same between years, you are good to go. If you are on Facebook, you can join the CR85 Owners group and post the question there also.
Hey, can someone explain, this is cr85 and why on the engine marked 600cc?
That is the crankcase oil capacity for the gearbox.
This was actually really helpful, only thing is we are missing that rubber Gate and a few parts 😂
We bought the parts instead of a kit and we're regretting it haha
@@trytonbennett4214 Both ways have their advantages. With kits, sometimes the parts aren’t the best. When you buy individually, you can usually buy OEM, which is the safest way to go.
@@brian.d.mobley I agree strongly, only being the fact that there was a few missing parts, since I completely destroyed the crank, piston, jug, and the bearings there was a few forgotten parts haha. Also I do have one last question, in the first 5 or so mins of the video u slid that rubber piece into the metal slit there, what is that part called? I wasn't able to find the one I took out lol
@@trytonbennett4214 Hey! “Rubber piece into metal slit” is just not enough for me to know about which part you are referring, but there are many sites that have good microfiche showing every component. Try Rocky Mountain ATV or Motosport. I’m sure you can find your answer there.
@@brian.d.mobley it was the grommet breather haha
were can i find a service manual
Join the CR85 Owners group on Facebook. In our knowledge base you can download the manual. facebook.com/share/BetqZ536D3xPB5qc/?mibextid=K35XfP
I'm confused, your cylinder didn't have a sleeve. Maybe it's a year difference? But my 07 has a steel cylinder sleeve.
It is possible to install a new sleeve in a cylinder. Perhaps your cylinder underwent this process.
@@brian.d.mobley sure looks factory to me. And considering it was basically a basket case when I got it and the kid beat the hell out of it I'm gonna assume he probably didn't have the cylinder bored and machined for a sleeve. 😂
@@pavementpariah7342 Im not sure about the history of this particular cylinder and what you assert certainly seems logical, but I can only state that the only surface treatment provided by Honda to the bore of a 2007 CR85 cylinder is Nikasil. Im sorry I cant help further.
Hi. What is the thickness of the head gasket? (squish)
I have never seen a spec for that which makes me think they don’t have wide variations of tolerances. Bottom line, I don’t know. Sorry
Awesome!! How about an 1979 XR80.?
An XR75 project could be coming soon!
Excellent 👌
Thank you! Cheers!
Brian buenos días de que año es esa moto o motor por favor dime el año y modelo y cilindrada por favor muchas gracias
Do you feel the wrench rabbit kit is equal to oem quality?
Hey Chris! Id probably have to say, "no." BUT, I have also never had any problems with my Wrench Rabbit kits and they are way cheaper than OEM.
@@brian.d.mobley thanks Brian. My son and I live in Houston area (friendswood and Rosharon) so I’m happy to subscribe We’re also going to tackle rebuilding a cr85rb ourselves. We had someone supposedly rebuild it only to find out that he charged us 2000$ for an expensive oil change. Lesson learned
@@brian.d.mobley also where can I get ahold of the manual you used to do the rebuild
@@cd1168 Go Texas!!! And, I hate to read that about the rip off. Im actually doing a new CR85 for my wife right now. Its going to be top shelf and really cool. I'll post some videos about the build so stay tuned! And THANK YOU for the subscription. Its always nice to get new followers. It is way more work to run a channel that it seems! Video production is a lot of work. I have a lot more respect (and understanding) of the work of people like Ron Howard and Steven Spielberg now.
@@cd1168 If you are on Facebook, join the "CR85 Owners" group. Im on there all the time and we have good files for download. Not to mention tons of help.
where did you get the factory fmf for it i cant find them at all
Hey Cody. The FMF actually came with the bike when I bought. Sorry I’m not more help.
Hello! What size wrench is needed to tighten the center bolt of the clutch basket? 14mm or 17mm?
Hi Hasek. Im so sorry, but I dont know that off the top of my head and I dont have any open motors at the moment to determine the answer. Hopefully you have both sizes and can try them out for yourself. Thank you for watching!
@@brian.d.mobley Thanks for answer. I found the answer to my question - the bolt has a wrench size of 14mm. Thanks for very interesting and useful video!
@@Вродеигачавродебасик I’m so glad you were able to find that. I just couldn’t recall and didn’t want to give you the wrong information. Thanks so much for the kind words and for watching my channel!
How far is the shifting drum supposed to move cause mine doesnt feel like any other dirtbike tranmission ive ever used but i have all 6 gears but it doesnt click into gears
Hi Send Memes. Im not sure exactly what you mean regarding drum movement. Lateral movement like runout or rotational movement while shifting. If the engine is operational, can you share with me whether the transmission comes out of gear during operation?
@brian.d.mobley it pops out of gears in first and second like there false neutrals and the shifting drum the pins that slide out into the drum to pick the slot to move it in the next gear don't do anything unless you actaully jam the shifter or kick it down or up one thing I do know tho is I will never be buying another honda after this bike tho complete lemon clutch wont engage nothing works on it and I've put over 50 hours into this engine alone
@@brian.d.mobley and the engine was operational till I stalled it in 4th gear cause my clutch doesn't work at all when I've put it together exactly how everyone says just snug not overtightened so I have no idea I'm just gonna sell this thing for cheap
Noted.
If you would like to sell it, up to you. You can also join our CR85 Owners Group on Facebook for more tips and helps from a community of CR85 owners. facebook.com/groups/545886302210401
I have a cr85 im working on and bought a new head gasket put on and leaks out head gasket any Ideas ?
Hi Richard. A few things come to mind. The head may be warped. I go over that in another video titled "Tips and Tricks for Measuring Your Top End." Another is the torque specs for the head are not correct or not the same on each of the four head bolts. Check these first. If your problem is not solved, let me know.
Hi brian sorry to interrupt but i also have a cr85 2007 that needs a rebore. I have taken it to my local bike shop and they said its got a steel sleeve in the barrel and it cant be rebored / honed have u any idea if this can be fixed ?
@@jakeubbb265 I’ve seen those sleeves on sites like eBay. Honestly, I’ve never dealt with one so I’m not really positive about honing or boring if a sleeve has been installed. However, look up Millenium Technology. The do Nikasil repair and have a good reputation. They answer me promptly when I have cylinder questions. Email them. They are better equipped to give you a reliable answer.
Thank you for the help brian i will give them an email soon as possible 😁
I forgot to mention that im in the uk haha i think the postage costs ect would be out of my budget 😂thanks anyways
Can customers send you motors to rebuild?
Hey D1. Sure. I do customer jobs. I only do complete rebuilds and require vapor blasting of the cases and cylinder which costs $85.
@@brian.d.mobley im out in California not sure where your at but i have a 06 rm 85 and need to and bottom end rebuilt
@@user-bl8bn4kb8m Im in Houston, so the shipping is no big deal. You can email me if you like and we can discuss it. No pressure at all if you decide not to do it. sterlinganadar@gmail.com
does anyone know if we will fit the cylinder from cr 85 to cr 80
I want to see it run
Here ya go! th-cam.com/video/subMfZPb2os/w-d-xo.html
Do you balance the crank once you refit it?
@@brian.d.mobley that's good to know man! Means i won't have to worry about my bike blowing up when i fit a new crank💪🏼 thanks for the feedback, much appreciated!
Woow that’s awesome good job
Thank you!
Thx
Thanks!
Where can i get torque specs?
I can email you the service manual if you like. Or, you can join our CR85 group on Facebook and get the manual there - along with tons of free help! facebook.com/groups/545886302210401
Hey man, This video was a very LONG time ago. but on the clutch side did you have any reverse threads like on the hub or primary drive nut?
The only reverse thread that I recall is the center bore of the flywheel. The thread onto which you thread on the flywheel puller.
@@brian.d.mobley thanks man your a life saver
@@ianfisher7632 Sure! Glad to help!
Hola necesito un motor 80 cili drama en que precio anda o 85 le ba al cr 80
Witch year is the bike?
@@brian.d.mobley do you have Instagram ?
I need that engine
@@brian.d.mobley I want that engine cr85
Nice 💪🏾💪🏾
I can’t find a new kicker lever
Don’t give up!
@@brian.d.mobley 😂 thanks
damn your awesome
Hey Andrew! Thanks! But I’m just a regular guy!
Thanks for reply the head when I got bike was wrong so I got one from ebay but I didn't know the other was wrong and I'm trying to tq down in the bike so , lol I'm over it hhhahaha
Working on bikes can be frustrating. But, you can do it. If you have Instagram, you can follow me there and message me if you get stuck.
Продайте мне такой двигатель, буду очень признателен!
Извините, но у меня нет ни одного, чтобы отправить вас в Россию!
@@brian.d.mobley ничего страшного, тогда буду ремонтировать свой, глядя ваши видео.
@@Mount-Kisco Надеюсь, видео помогут! Спасибо за просмотр!
@@brian.d.mobley да, они хорошо помогают, большое спасибо за ваши видео!
@@Mount-Kisco С удовольствием! Большое спасибо за то, что нашли время, чтобы поделиться своими приятными комментариями!
For someone who loves his lube you sure didn't go in to deeply on ring end gap...
Not sure what lube has to do with end gap, but I made a complete video on top end measurement and I’ve never once come across an ring that was out of spec on a cylinder that was within service limits.
I’ve put my kick start shaft in and aligned everything and it still makes a weird clicking noise when I spin the crank over acts like like it’s not in right but like I said everything I’ve checked and rechecked everything numous times any thoughts
Hey Mike. Is this kickstart on a CR85? And, spinning the crank makes your kickstart shaft click? If yes, how are you spinning the crank? BTW, there is a very famous skateboarder from the 80’s named Mike McGill and I have one of his boards to this day!!
@@brian.d.mobley haha I’m not the skate boarder, Cr85r, I’m spinning the clutch counter clock wise, when I put the clutch cover case on and tighten everything thing up I spin the magneto counter clock wise my kick start shaft will snap every 1/4 to half turn
@@mikemcgill6716 I’ve not heard of that sort of problem, Some thoughts on possible causes. Teeth missing from any of the related gears. Primary, clutch hub, kickstart gear. Have you checked your assembly against the factory service manual? Sometimes things are missed. Like so many of these problems, it’s hard to diagnose without the parts in front of you.
@@brian.d.mobley yes checked with manual and fiche card I’m at my wits end, thanks for your time
@@mikemcgill6716 I wish I could help more. Would you like to email some pics of your installation?