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- Опубліковано 10 вер 2024
- YZ250F Engine full rebuild (Part 4). Will be the same from 2019 to 2023. Installing the cylinder head and cams on the bike and starting her for the first time. Doing heat cycles too!
Link to Yamaha service manuals for free... library.ymcapp...
Donate Race Fuel link... www.paypal.com... for watching!upallnight91@hotmail.com
Plan on using these vids when I inevitably have to rebuild my 22 yz450, assuming theyre relatively the same
I do have a video for a YZ450 top end and also one for a 2021 YZ450 bottom end that might help
I actually did just that. Just make sure u grab the flywheel puller i think mine is a motion pro. I did my 2021 at like 65 or 70hrs and it was a total waste of time honestly not a scratch or ding or mark or evidence of any wear but it was fun
Loving these therapy videos🫡 keep them up
Therapy is a great thing! I enjoy hearing that!
Great series on the 250 🏜👍
Thanks!
1:01:00 you can use the power tuner app and see the air temp, water temp, battery voltage, and rpm. its pretty cool
Another great video!!!
Thanks!
Great job friend! Keep it up!
Thanks!
Nice work man! 👍
Thanks!
Pumping them out faster then I can watch them! 🤟🏽
I know man. Faster than I can even proof watch them for errors or mistakes too lol. Have about 3 more videos coming up and then may take a week or two off for a break.
@@UpAllNight91 to be honest… I would like to see the behind the scenes ! Your phone you using , the tripod , you editing, explain how you save or delete videos etc and whatever else you do. I personally like your simple set up! I know your busy wrenching but if you ever have down time or nothing to record that would be a requested video! I love this channel 🤟🏽
@@Factory928AC Appreciate the request and tip. Yes I will put together a video on that after I get past these next few jobs on the table. Its surely a simple setup lol
You should try the brand of thread locker called stuck nuts Good company and I believe they are trying to keep trails open.
Yes sir! I recently switched to stuck nutz. So far so good!
Hey man, I over the years on a o-ring I've noticed WD seems to loosen up the chain with a lot of slop. An old timer showed me Maxima chain wax and since then for over 15 years I've had great normal chain wear. Minimal dirt collection because it's not sticky like other lubes. I ride in New England with sand, loam, and wetness. Thanks for being real in your vids bro
Right on! Thats good to hear. I do like how chain wax smells, as strange as that may sound lol. Hmm, got me wondering for the street bike, wax may be better than the lithium based lube I use on the street bike. But for the dirt bike if I was to use anything besides WD40 it would surely be just a chain wax. As like you mentioned it dries and doesn't collect dirt and sand as much
Rotella is the best!!!
For sure, cant be it!
Love your videos man! I’m here in palm beach county. Where are you located? Would love to hire you to do my top end on my 23 yz250f when it’s time.
Thanks man! I'm in Parrish Fl which is close to sarasota. You can reach me at upallnight91@hotmail.com for my phone number so whenever you need some work done.
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😁👍
Hi legend currently doing my first rebuild on 2019 yz250f do u have any vids on feeler gauges and valve clearances every set of feelers in Australia are different are we using top number or bottom cheers…
Hello! I have a lot of videos like this where I end up adjusting the valves like this video. But I dont have a video on feelers gauges themselves. The two sets of numbers, one is imperial the other is metric. If the video I often use imperial. The manual will have both listed, so just pick which form of measurement you want to go by and stick to that. I usually stick to imperial because thats kinda standard here in the states.
1:04:00 dude i swear my 19 yz250f does the same exact thing it had me worried. this bike also has 165 hours and hasnt been maintenanced once in its entire life. is there anything i should be worried about?
Hello. The clutch chatter can be pretty normal on these YZ250f's. Some do it worse than others. But at 165 hours I would at least do a top end job and chain. Get a fresh piston and timing chain in there. Its surely due.
My 22 yz250f does the exact same thing ! Don't know if it could be the clutch cover that allows more noise to come threw? 🤔 doesn't effect the riding at all
Planned on putting new crank in theYZ 250F last weekend but after removing the old one decided to replace the bearings as well. Is it ok to leave the crank in the freezer until bearings come in or should I take it out and then refreeze it?
U can leave it in. Worn hurt anything.
Isn’t there 2 dowel pins that are supposed to go in between the head and cylinder?
Yes there are 2 dowel pins between the cylinder and case as well as between the cylinder and head.
@@UpAllNight91 ok thanks I was just wondering because I wasn’t seeing it in the video. I guess it’s hard to see 🤷
@@dirtbikefanatic54 Yes. I might have forgotten to mention them. Will be sure in future videos on clearly show that. Thanks
What would cause the bike (22 yz250f ) to kinda have a small back fire or pop when im blippin the throttle with the bike on the stand doesn't do it when riding just on the stand
Sometimes its normal as long as its not doing it while in gear riding. I have seen them pop a little though if the idle is set too high though.
@UpAllNight91 okay ! , yah never does it in gear , just on the stand in neutral, I'll try adjusting the idle a tad and see If it helps, appreciate it bud 🙏
@@aaronhinojos1131 Ok. If it only does it on the stand I wouldnt worry much about it. It does have a gear sensor letting the ECU know when its in neutral. They run a different map in neutral than they do when in gear.
@UpAllNight91 I adjusted the idle down a bit and it completely went away. Thank you for the help bud ! And I didn't know that ! That's good to know ,
@@aaronhinojos1131 Ahh, thats good news!
Man I have been struggling to get the exhaust cam in with the new chain for a few hours.. funny part is I got it in easy but then took it out to reset because it was a few teeth off, any tips?
Hello Yes. The chain may have gotten kinked up down at the crank sprocket. I would hold the chain up with my hand at the cylinder head and turn the crank by hand. Spin it which ever direction it will spin without getting binded up to free up the chain. If that doesnt help and it comes down to it, remove the stator cover and flywheel and get it corrected down there.
@@UpAllNight91 I did end up getting it! Thank you. Bikes all back together running good after 2 heat cycles! 61 hr on the bike
@@steelebodyfitness5670 Right on, thats good news! Enjoy her!
Good evening. By any chance the cam you took off does the exhaust pin line up with high point on the cam
Hello. I dont have the cams here, I gave them to Joey when he picked up the bike but I will contact him and see if he can get that into for you.
I’ll look when I get home
Thank u two gentlemen
Are there any visible signs a valve is close to it end? Bike rebuild never heard it run. Titanium valves are $$$ ty
If they wear the part that comes in contact with the valve seat they should be replaced. Or if thew tip starts mashing down. But otherwise as far as to tell if they are just old and due for safety reasons. I honestly dont know a way except keeping track of hours. Dont know of one yet at least.
Hey man! I’ve got a really weird situation and I am looking for a dirt bike genius to help. I need someone who knows more than the average mechanic at the dealership. Could I hop on a phone call with you? I will even pay 😂
Sure. If you wanna shot me a email with your phone number. My email is upallnight91@hotmail.com
@@UpAllNight91 thanks man! Sending an email now
What brand is the micrometer?
Its just a harbor freight cheapy, but it works.
What do you think about Ducati desmo 450 coming out?
The bike is very interesting, high-performance and all that! The author of this channel, in a review of his 2-stroke motorcycles, voiced what is the beauty of 2 strokes... (number of parts, cost, ease of repair) Hello author))) In the previous video of this channel, count the parts for the repair of this Yamaha and add the cost of the repair itself , which you will have to pay to the master or dealer (number of parts, cost, complexity of repairs)... This is what I mean! On a desmo it is very specific and difficult to adjust the valve clearances, but that’s okay... How much will the parts and repairs cost??? Not everyone will be able to make high-quality repairs and how expensive it will be, not everyone undertakes their repairs (taking into account road equipment, the device is the same +/-!!! As for driving... Desmo is needed in order to turn the engine to obtain peak power!!! Are you able to twist and hold a modern 250 or 450 on the throttle open for at least 15-20 minutes??? Few people can drive a 125 all the way))) Everything is obvious here!!! And of course, everyone decides for themselves! What kind of bike do you have? Best regards, Dmitry!!!
@@dmitriyaleksenko2382 I agree with what you said. For me its too soon to judge. Some questions I have is how expensive will the parts be. How available will the parts be. How reliable will the bike be. KTM's for example, parts are often on back ordered when a engine or transmission repair is needed. This can make what could have been a week or less in the shop to a month or even 3 months in the shop waiting for parts. If your a rider that only rides here and there and dont mind these things then its ok. But for the young racer that is in a points series this can be a real deal breaker. High dollar teams will have all these parts on the shelf ready to go and wont have to worry about back ordered parts but us more normal folk this can be a issue for sure. 2 or 4 stroke, the Japanese brands are very good at keeping parts available and decently affordable which is good for us normal folk. I like all brands and I am not brand loyal, I just know I have to weigh these things out when I am picking a bike or suggesting a bike for someone.
@@UpAllNight91 That's right. We can talk about this forever... But the result is this!
1. A professional team will take modern high-performance equipment for its riders and no matter the budget and repairs, they fight for first places on the podium and the team has money.
2. A person who has enough money will buy new equipment according to his taste and preferences and he doesn’t care about repairs, he is ready to pay. He knows exactly what he wants!!!
3. And let the author of the question about the new 450 Desmo bike write the third point))) If the answer is incorrect ;-) ) ) I will correct it without any problems)))
I'm looking forward to the second part about the 125 2023 with a broken transmission with detailed prices for all the parts, and hello to Russia, for your interest in the video material and the channel itself!
Best regards, Dmitry!!! Russia.