Up until 33:30 I thought you were just letting nuts and bolts hit the ground lol. Super impressive know-how dude. I have about 50ish hours on a 250fx and It's starting to do the backfire fart pop thing after the engines warmed up and trying to start again. Never done a valve adjustment check but this is helping with the confidence to at least try, thank you man. 👍Good stuff
LoL, Thanks! Yeah them egg corns dropping on the roof are crazy. The backfire fart pipe and such may be more of a fuel thing then a valve thing. Running lean causes the pops and fart sounds. Wouldnt hurt to check the fuel pump while your checking the valves. You could have a pump starting to act up or get tired.
@@McMyerz223 you will have to check the valve clearance again shortly after you clearance them..the intake valves will build up a very hard layer of carbon on the valve faces and valve seats that breaks off after you give the valves clearance causing the problem to continue and eventually destroying the valve seats that are not replaceable !!! and get yourself a leak down tester that will tell you if your valves are too tight or not !
@@donniebaker5984 Thank you Don! I haven't dug into it just yet but will most definitely mention that to a more knowledgeable buddy that will be helpin' me out hopefully. I don't trust myself going solo yet, lol. Even with UA-cam and the service manual, I'm sure I'll mess something up.
Great video. I find your repair methods very practical. Lots of people want to push cutting valve seats at 30 hrs. I see some interesting changes from the 20-21 CRF250R engine design. The intake cam on the 20-21 has the cam gear bolted on which makes install much easier. Also noticed the OE piston pin did not appear to be DLC coated. They were on the 20-21 engine. I think they took a step back. Sure the single exhaust is simpler, but the two exhaust port design had more potential for builders/tuners.
Thanks and good eye!. Yeah the bolts on the cam surely would have made that easier. It was almost impossible to get the cams in and on the chain but it is doable, just barely though.
I know dude! Thats like 4 videos in 4 days. But it just happened that way. When jobs come through that I feel are video worthy I have to grab the moment and it seems 4 came though this week. Now I'm all worn out and thankful for the weekend lol. Tomorrow I go riding and then its back to monday! But Supercross is on tonight!!!
I been working on her bikes for a few years now and her boyfriends bikes for like 8 years now. We often ride together at tracks and such. A lot of people I do work for I am also friends with and ride with as I'm out riding pretty much every weekend. For sure I'm ready for the larger shop. Its getting so tight back here and I'm looking forward to having the space to test bikes on a little course on the property. Plus the wife is ready to get out of Parrish as its grown up to like almost city levels lol.
@@UpAllNight91 that’s rad!!if I see her bike on the tv for Supercross features ima let everyone know upallnightchris wrenched on that! I seen it on the tubeee🤘🏽🤘🏽🤘🏽🤘🏽
Hi great work. Could you tell what's the purpose of the dimple on the exhaust cam opposite side of the lobe. Looks like a ball bearing. Is it to do with decompression mechanism
@@daithimurphy1832Yes, the auto decompresson cracks the exhaust valve open as it passes the valve cam bucket on the base side of the cams circle. Once it starts up and starts spinning fast that tucks away and shuts off the auto decompress.
Found your channel the other day and subscribed. You do a very excellent job of explaining everything and your video show great detail with how the work needs to be done. If I lived in Florida I might just take my bike to you. But I live in Colorado.😂 by the way are your dogs chows?
Hello Zach, yeah Colorado would be a long drive lol. Yes they are full blooded chow chows. Great guard dogs, keeps the bikes nice and safe! Thanks for subbing and reaching out. Hope your having a great weekend!
@@UpAllNight91 That's awesome yes they are great guard. Dogs I used to have one myself when I was a kid. great dogs. Weekend was pretty lame dot like 6 inches a snow over here over the weekend and so no riding.
@@zachfarkash6430 Holy cow still snow! Dang its almost like summer already down here lol. At least it feels like it. Yeah the Chows are great. I have owned chows for years now. They are getting harder and harder to find though when you need a puppy.
Thanks! She only wanted a new piston. The valves checked out very well and so did the timing chain so she should be good with only the piston. I think she is also planning on selling it soon to move to a Yamaha. Shes a pretty fast chic, been riding since she was like 7.
@@jvke.p For sure. I was even debating a YZ250f myself. I usually own a 450 along with my smokers but right now I'm down to just two smokers. I think I'm done with 450's for the time being but I am interested in a 250f
@@jvke.p For sure. And sometimes that brute force torque of a 450 is so nice. I think I will get another one down the road, but just wanna take a break from them and play with some lighter more friendlier bikes for a little bit. Dial myself down some, play it safe. And then later try a 450 again with a little more respect hopefully lol
Is it bad to use brake clean or parts cleaner on a rag/paper towel to clean off gasket material? I used that when removing old head gasket material on my 450RL and it melted the old material off like it was nothing.
as you can see a single cylinder 4 stroke motocross engine today has dozens of moving parts ! people like to say that old school 2 strokes have no technology and have not changed in 20 years ..i got news for you 2 strokes will never change as it only has 3 moving parts but are made today with materials of modern alloys of new metallurgy , that is why a 2 stroke GasGas MC125 makes 40 hp with only 3 moving parts ..now thats what real technology is all about...everything else is bullshit
@@UpAllNight91 yeah man need to remove the coil..I’ve got same bike atm dropped 1 valve..using you’re video for pointers..over in Scotland..sure I’ve watch one of you’re videos about the yz 250 timing few years back
Do you happen to know what might be wrong with my 2023 crf250r if the estart works and everything when cold but bike just won’t start unless I bump start it? Then once bike is warm estart mostly works. Do you maybe know the issue(s)?
Hello. If when cold it cranks over but fails to start unless its push started. But once hot it will start for the most part by just hitting the button. Thats most likely worn out intake valves from too much dirt getting past the air filter. What I would do is remove the valve cover and check the valve clearance on the intake valves. If they are so tight that you cant even slide the smallest feelers gauge in then it will surely need new intake valves. You could adjust them to get it to start up and run as usual but the problem will come back within just a few hours. because once the valves sealing seat is worn they will just keep wearing out progressively and will keep tightening up the valve clearance till it doesn't start when cold again unless push started. So new OEM intake valves will be the fix if you find your current ones tight.
I will oil up a cylinder and then dry wipe the oil off if its a brand new cylinder with fresh cross hatching. But on a used cylinder a dry piston install works well and reduces the chances of blowing smoke.
I really need your expertise. I just did a top end & I removed air box/sub frame for cleaning. I have 2 left over plugs on wiring harness that are under tank, near throttle body. My bike is identical to this one 23' crf 250r. Do they have extra plugs to accommodate a X model maybe? Thanks for your time
Hmm. I haven't worked on the X model so I don't know if it has extra connections. I can say a lot of bikes do have extra connections that are not being used. I would look around good, if you can find anywhere it plug in, and if it is not kicking a trouble code (flashing light on the handlebars) then its probably good to go. It will kick the trouble code light if something is unplugged that's related to engine management.
It's a R model 250. 2023. Two extra plugs & starter just does half rev & stops. I can hear fuel pump whine. If I cross solenoid it turns over.... I'm beyond frustrated with this bike
@@jasonweatherford5710 The half rev and stop, if the ECU doesnt see the motor spin fast enough at the stator when you hit the start button the ECU pulls out on the starting by cutting the power to the starter relay. Was this bike running ok before the top end job?
@UpAllNight91 yes sir, ran just fine. My son said he washed the airbox while it was removed. Hopefully the air temp sensor got wet & is causing the problem. Have one on order
I didnt go to school for it. Mainly self taught due to my desire to wanna ride every weekend and being on a budget. I did start out as a auto mechanic so that kinda gave me a leg up when I started learning motorcycles but I never took any classes or courses. The internet has surely helped out huge though.
How often is this work necessary on a really conservative rider who takes care of the oil and air filter? What's the longest you could go roughly? They say 15 hours but obviously thats BS
On a 250f I suggest every 75 hours for track use. It can be shorted to 50 for a faster ride and even 40 for a really fast rider. But if its used for slower easier trail riding then 100 hours will be just fine.
lets go ahead and take a chance on the weakest link in the timing chain holding up for another hold season of rippng the hell out if it..but if it breaks too bad...so im betting the price of the cam chain against the cost of a new motor that will only cost around $5000 dollars
Honestly have you ever seen one of these break a chain? I havent. But I have seen other model bikes that have before and it didn't happen out of no where. They need to get completely stretched and kinky before they will actually break. The ones on this model bike are pretty tough. This one was way healthy and I honestly dont see it being a risk of breaking anytime soon.
@@UpAllNight91 you can not see it breaking anytime soon because the wear that has taken place on the pins holding it together is hidden from your eyes to see that is typical of a hyvo cam chain design ..that is what you have in front of you..., after since you said you have never seen what happens when they break usually one end will hang out the bottom of the engine cases and the other end will wrap its self around the cam sprocket cause the camshaft towers to break off but before that happens as the engine will most of the time be revved out cause the valves to beat the piston to death plus the piston will bend the valves side ways and drive them through the valve seats....but there is good news as honda has a one part number that will fix everything broken ! its called " engine assembly" usually only half the cost of a new bike ..so lets gamble the price of a new cam chain on half the price for a 4 stroke motocross bike , after all its not your money .. '
@@donniebaker5984 They get kinky when the pins wear out, and they also show stretch as the pins wear out. Both can be seen and felt way before a chain is about to break. Its not my money but its my reputation.
Whats happening Brandon. Did you get it yet? Them can be a real pita. You just gotta work at it like I did in the video till you find the sweet spot that allows it to drop in. Also make sure the chain is not getting kinked up down at the lower sprocket cause that will surely make it impossible. I also check for that if its giving me a hard time.
I have a question about piston ring end gap. Should we check ring end gap on wiseco piston? Because on my yz450f piston ring end gap 0.033mm (0.011in), but it should be 0.038mm (0,015in). Should I grind piston ring end gap?
Hello. It doesnt hurt to check but be sure to use the ring end gap wiseco suggest with their piston and not the ring end gap suggested for the OEM piston. I made a video on this topic and I highly suggest watching it first. Here is a link ua-cam.com/video/5wdMNpgAAYo/v-deo.html
@@UpAllNight91 Looks like I'll have to grind the piston ring gap. According to the recommendation from Wiseco, the minimum ring gap should be 0.038mm (for a 97.01mm cylinder), and when I take their ring and insert it into the cylinder (it’s stock), the piston ring gap is 0.033m, the 0.038mm feeler gauge won’t fit through.
@@maximzalessky227 Ok. Yeah just a hair on the tighter side. Its close enough that if you wanted to run it without filing it will be ok, just break it in well. Thats probably what I would do as its really close. But wouldn't hurt to file it either.
Hi I checked fuel system on 2020 crf250r. It sprays fuel when injector is out of the bike but when reinstall in and turn it over I can't see it spraying when I look into the throttle body. Is this correct. Bike isn't starting but I think this could be down to low compression.
When you mention that it sprays fuel when its out of the bike, is that out of the bike but connected to the bikes fuel system and terminal or is that on the bench?
@@daithimurphy1832 Ok yeah, they can sometimes be hard to see once they are inserted into the intake throttle body. Maybe slide some paper in there and see if it gets wet?
Oh yeah. I use shoe goo on my own bikes anywhere I can see thats gonna happen. It surelty saves the frame from that happening. The plastic frame guards are bad at that too.
just sayin' but today's 250 cc two stroke makes on the average of 50 hp some even more..and in the hands of the tuners like hldeo "pops" yoshimura your 250 cc 2 stroke could do over 100 mph ..in case you are wondering who the hell pops yoshimura was as he designed , built, produced the very first honda 2 stroke called the Elsinore ..ever heard of one ? they were the game changer world wide of the most powerful and lightest weight 250 cc in the world ..they would run circles around this 250 cc 4 stroke and any 250 cc 4 strokes ..2 cycle engines produce boost in order to feed the transfer ports to force the intake charge to blow the exhaust gases out the exhaust port ..its the sound wave of the exhaust reflected off the reverse cone of the expansion chamber that keeps the supercharged intake from escaping out te exhaust port as it was quoted to me by the designer himself , "pops" yoshimura ,..i was yoshimura's apprentice
@@UpAllNight91 without Hideo "pops" yoshimura there would never have been a Honda called the Elsinore nor would there ever have been the motorcycle exhaust company called YOSHIMURA the most famous exhaust pipes in the world today ..honda would have never had the fastest 250 and 500 dirt bikes in the world tuned by the most known tuner of all times today .. where have you been living under a rock ? you claim you dont know anything about the most known in the motorcycle industry of all brands the name yoshimura, if that is a true statement from you , you are quit uninformed
@@donniebaker5984 We pro 2 stroke over here, calm down and let that steam out your collar before you burst a blood vessel By the way Pops don't know you man
Yoshimura apprentice my ass, leave the guy alone, quit looking for trouble and get out of (under your rock) Patrick star and go keyboard warrior somewhere else. @donniebaker5984
lets use a wisco piston because its much cheaper than the forged honda piston.mated to the expansion rate of the nikasil plated stock handa cylinder. yep this is a true forged piston that the honda cylinder is not designed to expand as much as the new forged wiseco piston will ..so we are taking a chance to lock up the engine for a piston not made to work in place of the alloy forged piston from honda.and by the , after all its not ours ..hehe
I have put in over 1000 wiseco pistons in various bikes. I havent had any issue. It might not be my bike but these are my friends and I ride with them.
@@donniebaker5984 why are you hating so much on him, he’s making a lot of videos where he perfectly explain a lot of things. Learned so much on this guy. He has a lot of knowledge. Think lot of people can learn from this guy. I'm grateful.
@@donniebaker5984 Been wrenching on dirt bikes since I was 20. Doing it full time for a living. Cant count how many wiseco boxes I have opened up through the years. Not all are friends, but this one in this video is. Are you ok man?
Great video thanks. I am on my war to buy the 2025, but it will arrive in 3 Werkstatt earliest. Can you tell me the thread size of the oil drain plug 90084K95AA0 please? I want to buy an magnetic one upfront.
Hello. I'm sorry but I dont have that bike here currently so I wont be able to check the thread size. Whatever drain plug you use be sure to check that it doesnt go in the motor too far and come in contact with anything in there.
@@UpAllNight91 thanks this is a very important hint. I will wait until the bike is here to measure it. I dont know why the OEMs dont use it (beside the costs).
Very good video thanks
Yes Sir!
Up until 33:30 I thought you were just letting nuts and bolts hit the ground lol. Super impressive know-how dude. I have about 50ish hours on a 250fx and It's starting to do the backfire fart pop thing after the engines warmed up and trying to start again. Never done a valve adjustment check but this is helping with the confidence to at least try, thank you man. 👍Good stuff
LoL, Thanks! Yeah them egg corns dropping on the roof are crazy. The backfire fart pipe and such may be more of a fuel thing then a valve thing. Running lean causes the pops and fart sounds. Wouldnt hurt to check the fuel pump while your checking the valves. You could have a pump starting to act up or get tired.
@@UpAllNight91 Good to know, thank you! I'll check it out. Probably time for both with my luck.
@@McMyerz223 Yeah, gotta remove the tank to check the valves anyway. Might as well knock out two birds with one stone.
@@McMyerz223 you will have to check the valve clearance again shortly after you clearance them..the intake valves will build up a very hard layer of carbon on the valve faces and valve seats that breaks off after you give the valves clearance causing the problem to continue and eventually destroying the valve seats that are not replaceable !!! and get yourself a leak down tester that will tell you if your valves are too tight or not !
@@donniebaker5984 Thank you Don! I haven't dug into it just yet but will most definitely mention that to a more knowledgeable buddy that will be helpin' me out hopefully. I don't trust myself going solo yet, lol. Even with UA-cam and the service manual, I'm sure I'll mess something up.
I thought those were parts hitting the ground. I was like this guy. 😂
LoL Right! Dang tree over the shop lol
Great video. I find your repair methods very practical. Lots of people want to push cutting valve seats at 30 hrs. I see some interesting changes from the 20-21 CRF250R engine design. The intake cam on the 20-21 has the cam gear bolted on which makes install much easier. Also noticed the OE piston pin did not appear to be DLC coated. They were on the 20-21 engine. I think they took a step back. Sure the single exhaust is simpler, but the two exhaust port design had more potential for builders/tuners.
Thanks and good eye!. Yeah the bolts on the cam surely would have made that easier. It was almost impossible to get the cams in and on the chain but it is doable, just barely though.
Great Video and Great Explanations. Gives me plenty of confidence in saving money doing this job myself👍🏻
Right on!
Another great vid. 👍👍
Thank you Sir! And thanks for coming along.
Dude, you do a great job explaining every step. I learned a lot from this, thanks! Got a new sub from me too 😎
Thanks! And Welcome aboard!
Pumpin these out 🤙🏽. Lookin forward to part two for the yz250f
I know dude! Thats like 4 videos in 4 days. But it just happened that way. When jobs come through that I feel are video worthy I have to grab the moment and it seems 4 came though this week. Now I'm all worn out and thankful for the weekend lol. Tomorrow I go riding and then its back to monday! But Supercross is on tonight!!!
@@UpAllNight91 right on man
How was she referred to you!?!? That new shop couldn’t come any sooner! U are grinding!
I been working on her bikes for a few years now and her boyfriends bikes for like 8 years now. We often ride together at tracks and such. A lot of people I do work for I am also friends with and ride with as I'm out riding pretty much every weekend. For sure I'm ready for the larger shop. Its getting so tight back here and I'm looking forward to having the space to test bikes on a little course on the property. Plus the wife is ready to get out of Parrish as its grown up to like almost city levels lol.
@@UpAllNight91 that’s rad!!if I see her bike on the tv for Supercross features ima let everyone know upallnightchris wrenched on that! I seen it on the tubeee🤘🏽🤘🏽🤘🏽🤘🏽
@@Factory928AC 😁 Right! She has raced supercross futures. I was her boyfriends (Dillon) mechanic that day. That was too cool. What a experience!
Hi great work. Could you tell what's the purpose of the dimple on the exhaust cam opposite side of the lobe. Looks like a ball bearing. Is it to do with decompression mechanism
Hello. Thanks! Yeah thats for auto-decompression.
@@UpAllNight91 and is it normal for ot to be out when not running?
@@daithimurphy1832Yes, the auto decompresson cracks the exhaust valve open as it passes the valve cam bucket on the base side of the cams circle. Once it starts up and starts spinning fast that tucks away and shuts off the auto decompress.
@@UpAllNight91 fast reply thank you👍
Very nice video 👍👌
Thanks!😁
great vid 👍
Thanks!
Found your channel the other day and subscribed. You do a very excellent job of explaining everything and your video show great detail with how the work needs to be done.
If I lived in Florida I might just take my bike to you. But I live in Colorado.😂 by the way are your dogs chows?
Hello Zach, yeah Colorado would be a long drive lol. Yes they are full blooded chow chows. Great guard dogs, keeps the bikes nice and safe! Thanks for subbing and reaching out. Hope your having a great weekend!
@@UpAllNight91 That's awesome yes they are great guard. Dogs I used to have one myself when I was a kid.
great dogs. Weekend was pretty lame dot like 6 inches a snow over here over the weekend and so no riding.
@@zachfarkash6430 Holy cow still snow! Dang its almost like summer already down here lol. At least it feels like it. Yeah the Chows are great. I have owned chows for years now. They are getting harder and harder to find though when you need a puppy.
Nice video! Did they not want new valves? Seems like it would have been a good time to knock that out.
Thanks! She only wanted a new piston. The valves checked out very well and so did the timing chain so she should be good with only the piston. I think she is also planning on selling it soon to move to a Yamaha. Shes a pretty fast chic, been riding since she was like 7.
@@UpAllNight91 heck yea! Good looking bike. I’ve been wanting to get a Yamaha too. Just seems like a solid design all around
@@jvke.p For sure. I was even debating a YZ250f myself. I usually own a 450 along with my smokers but right now I'm down to just two smokers. I think I'm done with 450's for the time being but I am interested in a 250f
@@UpAllNight91 most of us won’t ever even use the full potential of a 250. I just want a 450 for how neat the engine is.
@@jvke.p For sure. And sometimes that brute force torque of a 450 is so nice. I think I will get another one down the road, but just wanna take a break from them and play with some lighter more friendlier bikes for a little bit. Dial myself down some, play it safe. And then later try a 450 again with a little more respect hopefully lol
Is it bad to use brake clean or parts cleaner on a rag/paper towel to clean off gasket material? I used that when removing old head gasket material on my 450RL and it melted the old material off like it was nothing.
Nothing wrong with it, if its working for ya. I use brake cleaner on a lot of stuff
as you can see a single cylinder 4 stroke motocross engine today has dozens of moving parts ! people like to say that old school 2 strokes have no technology and have not changed in 20 years ..i got news for you 2 strokes will never change as it only has 3 moving parts but are made today with materials of modern alloys of new metallurgy , that is why a 2 stroke GasGas MC125 makes 40 hp with only 3 moving parts ..now thats what real technology is all about...everything else is bullshit
Doing this job atm you can get cam cover off without taken the throttle body off..
Yes if I remember correctly you can
@@UpAllNight91 yeah man need to remove the coil..I’ve got same bike atm dropped 1 valve..using you’re video for pointers..over in Scotland..sure I’ve watch one of you’re videos about the yz 250 timing few years back
@@UpAllNight91 good tip on holding the dowel when removing the cylinder
@@markheron2674 Thanks!. Bummer on the dropped valve. Hope it didnt damage too much.
@@UpAllNight91 well damage is not to bad very minimal..cam chain is very stiff think it’s aftermarket chain..you’re tip to hold the dowel was top tier
Do you happen to know what might be wrong with my 2023 crf250r if the estart works and everything when cold but bike just won’t start unless I bump start it? Then once bike is warm estart mostly works. Do you maybe know the issue(s)?
Hello. If when cold it cranks over but fails to start unless its push started. But once hot it will start for the most part by just hitting the button. Thats most likely worn out intake valves from too much dirt getting past the air filter. What I would do is remove the valve cover and check the valve clearance on the intake valves. If they are so tight that you cant even slide the smallest feelers gauge in then it will surely need new intake valves. You could adjust them to get it to start up and run as usual but the problem will come back within just a few hours. because once the valves sealing seat is worn they will just keep wearing out progressively and will keep tightening up the valve clearance till it doesn't start when cold again unless push started. So new OEM intake valves will be the fix if you find your current ones tight.
Id still be using a fine bit of oil on that cylinder.
But het everyone has thier thing.
I will oil up a cylinder and then dry wipe the oil off if its a brand new cylinder with fresh cross hatching. But on a used cylinder a dry piston install works well and reduces the chances of blowing smoke.
I really need your expertise. I just did a top end & I removed air box/sub frame for cleaning. I have 2 left over plugs on wiring harness that are under tank, near throttle body. My bike is identical to this one 23' crf 250r. Do they have extra plugs to accommodate a X model maybe? Thanks for your time
Hmm. I haven't worked on the X model so I don't know if it has extra connections. I can say a lot of bikes do have extra connections that are not being used. I would look around good, if you can find anywhere it plug in, and if it is not kicking a trouble code (flashing light on the handlebars) then its probably good to go. It will kick the trouble code light if something is unplugged that's related to engine management.
It's a R model 250. 2023. Two extra plugs & starter just does half rev & stops. I can hear fuel pump whine. If I cross solenoid it turns over.... I'm beyond frustrated with this bike
@@jasonweatherford5710 The half rev and stop, if the ECU doesnt see the motor spin fast enough at the stator when you hit the start button the ECU pulls out on the starting by cutting the power to the starter relay. Was this bike running ok before the top end job?
@UpAllNight91 yes sir, ran just fine. My son said he washed the airbox while it was removed. Hopefully the air temp sensor got wet & is causing the problem. Have one on order
@@jasonweatherford5710 ok. That intake temp sensor should be able to handle water. When you cross the solenoid and it turns over does it fire up?
Your a good mechanic, respect. Did you go to school, or are you self taught
I didnt go to school for it. Mainly self taught due to my desire to wanna ride every weekend and being on a budget. I did start out as a auto mechanic so that kinda gave me a leg up when I started learning motorcycles but I never took any classes or courses. The internet has surely helped out huge though.
How often is this work necessary on a really conservative rider who takes care of the oil and air filter? What's the longest you could go roughly? They say 15 hours but obviously thats BS
On a 250f I suggest every 75 hours for track use. It can be shorted to 50 for a faster ride and even 40 for a really fast rider. But if its used for slower easier trail riding then 100 hours will be just fine.
lets go ahead and take a chance on the weakest link in the timing chain holding up for another hold season of rippng the hell out if it..but if it breaks too bad...so im betting the price of the cam chain against the cost of a new motor that will only cost around $5000 dollars
Honestly have you ever seen one of these break a chain? I havent. But I have seen other model bikes that have before and it didn't happen out of no where. They need to get completely stretched and kinky before they will actually break. The ones on this model bike are pretty tough. This one was way healthy and I honestly dont see it being a risk of breaking anytime soon.
@@UpAllNight91 you can not see it breaking anytime soon because the wear that has taken place on the pins holding it together is hidden from your eyes to see that is typical of a hyvo cam chain design ..that is what you have in front of you..., after since you said you have never seen what happens when they break usually one end will hang out the bottom of the engine cases and the other end will wrap its self around the cam sprocket cause the camshaft towers to break off but before that happens as the engine will most of the time be revved out cause the valves to beat the piston to death plus the piston will bend the valves side ways and drive them through the valve seats....but there is good news as honda has a one part number that will fix everything broken ! its called " engine assembly" usually only half the cost of a new bike ..so lets gamble the price of a new cam chain on half the price for a 4 stroke motocross bike , after all its not your money ..
'
@@donniebaker5984 They get kinky when the pins wear out, and they also show stretch as the pins wear out. Both can be seen and felt way before a chain is about to break. Its not my money but its my reputation.
Hey this Brandon from the track is there any trick to get this camchain over the cams on a 24 crf250 I'm getting mad at it lol
Whats happening Brandon. Did you get it yet? Them can be a real pita. You just gotta work at it like I did in the video till you find the sweet spot that allows it to drop in. Also make sure the chain is not getting kinked up down at the lower sprocket cause that will surely make it impossible. I also check for that if its giving me a hard time.
I have a question about piston ring end gap. Should we check ring end gap on wiseco piston? Because on my yz450f piston ring end gap 0.033mm (0.011in), but it should be 0.038mm (0,015in). Should I grind piston ring end gap?
Hello. It doesnt hurt to check but be sure to use the ring end gap wiseco suggest with their piston and not the ring end gap suggested for the OEM piston. I made a video on this topic and I highly suggest watching it first. Here is a link ua-cam.com/video/5wdMNpgAAYo/v-deo.html
@@UpAllNight91 Looks like I'll have to grind the piston ring gap. According to the recommendation from Wiseco, the minimum ring gap should be 0.038mm (for a 97.01mm cylinder), and when I take their ring and insert it into the cylinder (it’s stock), the piston ring gap is 0.033m, the 0.038mm feeler gauge won’t fit through.
@@maximzalessky227 Ok. Yeah just a hair on the tighter side. Its close enough that if you wanted to run it without filing it will be ok, just break it in well. Thats probably what I would do as its really close. But wouldn't hurt to file it either.
Hi I checked fuel system on 2020 crf250r. It sprays fuel when injector is out of the bike but when reinstall in and turn it over I can't see it spraying when I look into the throttle body. Is this correct. Bike isn't starting but I think this could be down to low compression.
When you mention that it sprays fuel when its out of the bike, is that out of the bike but connected to the bikes fuel system and terminal or is that on the bench?
@@UpAllNight91 yes when connected to the bikes system with injector out
@@daithimurphy1832 Ok yeah, they can sometimes be hard to see once they are inserted into the intake throttle body. Maybe slide some paper in there and see if it gets wet?
Why the hell Honda doesn't make a 350 I don't know
Right. for me a bigger question is why they dont make 2 strokes anymore
Is this close to the same as a 22 450? Or very different?
Hello. I have a video like this but for the CRF450r. Here is a link ua-cam.com/video/FWt7Ws40Fl4/v-deo.html
@@UpAllNight91 sweet thank you!
@@brodyberry9919 Yes Sir!
6:40 the plastics just love to eat that frame :(
Oh yeah. I use shoe goo on my own bikes anywhere I can see thats gonna happen. It surelty saves the frame from that happening. The plastic frame guards are bad at that too.
just sayin' but today's 250 cc two stroke makes on the average of 50 hp some even more..and in the hands of the tuners like hldeo "pops" yoshimura your 250 cc 2 stroke could do over 100 mph ..in case you are wondering who the hell pops yoshimura was as he designed , built, produced the very first honda 2 stroke called the Elsinore ..ever heard of one ? they were the game changer world wide of the most powerful and lightest weight 250 cc in the world ..they would run circles around this 250 cc 4 stroke and any 250 cc 4 strokes ..2 cycle engines produce boost in order to feed the transfer ports to force the intake charge to blow the exhaust gases out the exhaust port ..its the sound wave of the exhaust reflected off the reverse cone of the expansion chamber that keeps the supercharged intake from escaping out te exhaust port as it was quoted to me by the designer himself , "pops" yoshimura ,..i was yoshimura's apprentice
Dont know anything about him but I am familiar with elsinores of the 70's. I love 2 strokes and still ride them today.
@@UpAllNight91 without Hideo "pops" yoshimura there would never have been a Honda called the Elsinore nor would there ever have been the motorcycle exhaust company called YOSHIMURA the most famous exhaust pipes in the world today ..honda would have never had the fastest 250 and 500 dirt bikes in the world tuned by the most known tuner of all times today .. where have you been living under a rock ? you claim you dont know anything about the most known in the motorcycle industry of all brands the name yoshimura, if that is a true statement from you , you are quit uninformed
@@donniebaker5984 Thats before my time. I rode my first dirtbike in 1985 at the age 9.
@@donniebaker5984 We pro 2 stroke over here, calm down and let that steam out your collar before you burst a blood vessel
By the way Pops don't know you man
Yoshimura apprentice my ass, leave the guy alone, quit looking for trouble and get out of (under your rock) Patrick star and go keyboard warrior somewhere else. @donniebaker5984
lets use a wisco piston because its much cheaper than the forged honda piston.mated to the expansion rate of the nikasil plated stock handa cylinder. yep this is a true forged piston that the honda cylinder is not designed to expand as much as the new forged wiseco piston will ..so we are taking a chance to lock up the engine for a piston not made to work in place of the alloy forged piston from honda.and by the , after all its not ours ..hehe
I have put in over 1000 wiseco pistons in various bikes. I havent had any issue. It might not be my bike but these are my friends and I ride with them.
@@UpAllNight91 1000 pistons ? that is a lot of friends or why do they need so many pistons ?
@@donniebaker5984 why are you hating so much on him, he’s making a lot of videos where he perfectly explain a lot of things. Learned so much on this guy. He has a lot of knowledge. Think lot of people can learn from this guy. I'm grateful.
@@donniebaker5984 Been wrenching on dirt bikes since I was 20. Doing it full time for a living. Cant count how many wiseco boxes I have opened up through the years. Not all are friends, but this one in this video is. Are you ok man?
@@tw-twhite Thanks man
Great video thanks. I am on my war to buy the 2025, but it will arrive in 3 Werkstatt earliest. Can you tell me the thread size of the oil drain plug 90084K95AA0 please? I want to buy an magnetic one upfront.
Hello. I'm sorry but I dont have that bike here currently so I wont be able to check the thread size. Whatever drain plug you use be sure to check that it doesnt go in the motor too far and come in contact with anything in there.
@@UpAllNight91 thanks this is a very important hint. I will wait until the bike is here to measure it. I dont know why the OEMs dont use it (beside the costs).
@@barbenfischen Yeah I think its a cost thing. And maybe they dont want us to freak out when we see transmission dust on the magnet lol
@@UpAllNight91 😄
Do you have a Facebook I can send you a vid of a sound on my bike and u tell me if it sounds fine?
Yes I do Christopher Upallnight. But you can also email it to upallnight91@hotmail.com
You got Facebook?
Yes sir, Christopher Upallnight is my name there