Wow! Are you trying to launch the pistons through the cylinder walls ! I would never rev up a brand new unbroken in engine in such a way. Other than that, a nice job on the rebuild.
Checked out some myth or not video about breaking in an engine, they took 2 engines reved one like crazy and gently broke the other in. Tore them down and sent out some oil samples to check levels of different metals both were exactly the same. As long as it wasn’t run dry with no oil or no assembly lube it’d be fine.
@@jonathanbrown1120 Well . It's still very good idea to break engine in , mainly because of ring and their fitting ,but i somehow agree with your theory , main thing that you don't want to happen is overheating the engine . That can cause serious damage , especially if there are new pistons
I’ve always been part of the “run it how it’s gonna be run” when breaking in, of course I work my way to it. Still would make me nervous redlining one on start up
Think about once an engine is started. Hundreds of revolutions in only a minute. As long as there is adequate oil and grease where it needs to be, It would be fine. If you are gently running the engine in case something goes wrong, well at that point if something failed while an engine is running it’s too late to save. Dropped valve, broken rod or rings. If you hear something not right and the engine was running you have already caused irreversible damage. That being any noise that a regular service could not fix like timing chain tightened, valve noise from clearance not within spec.
Im almost convinced that I should purchase a pair of split toe slides to rebuild my LS2 engine😄.. this was a good rebuild video and very relaxing to watch
@@apatbond2864 no bro I'm personally using Yamaha R15V2 nd it done 800000 kilometers and it's an 2011 model bike they are amazing in terms of performance nd reliability 👌😎👍
Same, when he’s taking the buckets out and leaves the one shim on the intake valve I started sweating... I’m thinking this guy likes to live dangerously
I have built a number of engines in my time and thats the first time I have ever seen someone rev one to redline on the first start. Not too smart. Nice to see you finally using a torque wrench though.
I suspect that the saving grace here is that the piston speed isn't high on these small cylinders, a feature that helped Honda have decent reliability with their super high rpm engines of back in the '60s. A bigger bore, longer stroke cylinder engine develops much greater stress on the rings and piston and calls for a more gradual break-in process to give good longevity. Still, I see so many these days abusing engines because it's somehow "cool" and manly to do (like running an engine up to the rev limiter and holding it there with no load) and it's not encouraging to see in any way.
У них в деревне 20 млн индусов, и все меряют все с детва ногтями. Народный индусский замер еп та ть....Других приборов измерительных в деревне нет, ибо мерять ими заподло.....
You did that before, didn't you? When you took that engine apart, I thought never in my life will he be able to put it back together again. But you did it! Congrats!
@@newtonmutea , thats your opinion, which you are allowed, but you are not allowed your own facts. But hey, go ahead and follow poor workmanship. good luck.
I abre a with @flexjay87. The video shows only a dessassemble and reeassemble. No craftsmanship in any part. That guy is careless with the inner parts. No analysis and markings in the pieces, for example, the conrods and its places. Man, if you dont take care of this things... bye bye engine in a short period of time, and you dont know what happened. Cause you are just a assembler not a careful mechanic. Its visible... by the way that is a hell of a engine! 18.000 rpm... if you dont take care of this things. The blow is certanly. Sorry for my english... Im learning.
@@EduardoHenrique-yl4jg it's a relaxing video to sleep, if someone wants to get a reference or to actually rebuild an engine he will go to another channel aren't that dumb.And I don't see any carelessness as you call, he used new inner parts, he used a torque wrench where he was supposed to use I don't understand specifically what is your problem I have definitely seen worse rebuilds, this is one is ok
I just would number the pieces of the same kind before removal in a way to be able to put them in the same position again, avoiding any swap, just a tip. Good job anyway.
Excellent video This video can be applied to almost all Honda CBR250 fours MC14, MC17, MC19, MC22 and CB250 Jade MC23 and CB250F Hornet MC31 Remember to have a original service manual in hand in case of any doubts about the assembly of this fine little piece of japanese motorcycle engine along with the parts catalogue to order the correct parts for each engine variant It is not advisable to redline a new or fresh rebuilt engine unloaded without breaking in first, you might damage the engine earlier, just stay up to 10000 rpm max until hits the first 1000 miles and after the first oil change and filter service, after that you can rev it to the redline of 18000 rpm in a free highway at 100 miles per hour Enjoy that little crotch rocket, those sweet bikes are not longer made by Honda anymore
Took me 8 minutes into the video to realize you guys were Lankan, good job with the limited tools available! I won't dare touch the gearbox on a 6 speed inline 4 though 😅 Nice channel, keep it up!
Impressive🤯🤯 You make it like seems easy!!!!! But it's not 😳!!! Good job sir👍👍 Im a car guy and i know that motorcycle engine are more tricky and complicated due to smaller size etc.
1. please take it easy on the cold start fresh rebuild limiter bashing 2. did anyone see a torque wrench 3. i guess it works, but id love too see it in a frame and riding
Now I understood. 1st step of restoration in to spread a big carton on the floor. Many advantages; environment friendly, shock absorbing, easily available
The CBR250RR from the 80’s and 90’s was one of the best and most unique bikes of the period, with good looks and a screaming engine that could rev to 20 000 RPM, no wonder they are so rare, because nobody wants to get rid of them.
@@kyledelange7055 Exactly, my point being the parts you see in this video are (almost) all Chinese copies so they wouldn't have cost much in $. But being a poor island nation, even these parts *would* have cost 2-3 months average salary. Buying all genuine original parts would have cost these guys more than 2x the price of a complete recon engine, and more than the annual income of the average person. (Almost all parts except the head gasket, notice how there are two - one in a kit with rest of the asbestos gaskets and the original one separately which is the one installed. Spark plugs are _probably_ original NGK Japan too)
Thank you so much for the very informative video..hope my brother will see this so he can repair his mc19 cbr250...thus you have address if maybe we can send our engine for repairing...thank you so much
Excellent design, Honda is the best. You did a great job
Machan me workshop 1a tiyana thana kiyanna puluwanda pls 🙏🙏🙏
Freshly rebuilt engine revved to the red...nice
Bạn phục hồi rất chi tiết 👍👍
Great editing, you made this look easy. A joy to watch!
Salute....it's my first time to see an inline-four motor engine without timing chain...it's so compact but absolutely an screamer
Wow! Are you trying to launch the pistons through the cylinder walls ! I would never rev up a brand new unbroken in engine in such a way. Other than that, a nice job on the rebuild.
Checked out some myth or not video about breaking in an engine, they took 2 engines reved one like crazy and gently broke the other in. Tore them down and sent out some oil samples to check levels of different metals both were exactly the same. As long as it wasn’t run dry with no oil or no assembly lube it’d be fine.
@@jonathanbrown1120 Well . It's still very good idea to break engine in , mainly because of ring and their fitting ,but i somehow agree with your theory , main thing that you don't want to happen is overheating the engine . That can cause serious damage , especially if there are new pistons
I’ve always been part of the “run it how it’s gonna be run” when breaking in, of course I work my way to it. Still would make me nervous redlining one on start up
Think about once an engine is started. Hundreds of revolutions in only a minute. As long as there is adequate oil and grease where it needs to be, It would be fine. If you are gently running the engine in case something goes wrong, well at that point if something failed while an engine is running it’s too late to save. Dropped valve, broken rod or rings. If you hear something not right and the engine was running you have already caused irreversible damage. That being any noise that a regular service could not fix like timing chain tightened, valve noise from clearance not within spec.
He didn’t even torque the rod caps Jesus 😂
Bro you are a legend..all are legends .. because heart through love to the machines ♥️♥️♥️♥️♥️♥️♥️♥️
Im almost convinced that I should purchase a pair of split toe slides to rebuild my LS2 engine😄.. this was a good rebuild video and very relaxing to watch
Pls perform the break in period on the engine or atleast pls warm upe the engine properly before revving them 👍👍
@@matthiasweigel311 what do u mean proper English?? I'm not a youtuber but I'll try to make videos nd upload them 👍
@@matthiasweigel311 ?
Asentamiento a marzo. No va a durar mucho ese motor así
Try building your own correct way instead
@@tirsonacholibre5586 i already repaired alot of engines from HAYABUSA to DUCATI
Amazing rebuild bro but pls perform the engine warmup before revving the engine
Crazy + stupid
@@apatbond2864 who?
But surely nothing happened to that engine,that engine tough enough to handle it...not like new yamaha r25 engine,weak,terrible engineering
@@apatbond2864 no bro I'm personally using Yamaha R15V2 nd it done 800000 kilometers and it's an 2011 model bike they are amazing in terms of performance nd reliability 👌😎👍
@@AzamAli-ce7tt v2? 12 years? 2021rn so if its 12 years you got it early 2010?, r15 v2 release date was late 2011......
saya suka video2 dichannelnya...salam dari indonesia.👍🙏🙏
TH-cam එකේ දකින්න අමාරුම 250cc engine restoration 1ක්. මේකයි මේකේ body work එකයි නම් අනිවා million views යනවා. ශ්රී ලාංකිකයෙක්ගෙ මේ වගේ වැඩක් අනිවා අගේ කරන්ඩ ඕනේ. දවසක් live එකක් ඇවිත් කතා කරමු. parts හොයන්නේ කොහොමද?මේ දේවල් ඉගෙන ගත්තෙ කොහොමද ඉස්සරහට ගේන්නේ මොනවද(personally requests honda hornet cbf250 chasis 120- any sensor model full restore)වගේ දේවල්. handtool වලින් ඉක්මන්ට machine tool වලට මාරු වෙන්න එතකොට තවත් පට්ට.✌ ජය
I must have missed the part where he honed the cylinders and re-shimmed the valves,also meausring the crank journals for new shell bearings!
and rod and main torqued to spec lol
I was freaking out the whole video, asking my self "where the hell is the maintenance manual!?!?"
Same, when he’s taking the buckets out and leaves the one shim on the intake valve I started sweating... I’m thinking this guy likes to live dangerously
I have built a number of engines in my time and thats the first time I have ever seen someone rev one to redline on the first start. Not too smart. Nice to see you finally using a torque wrench though.
Do you think race engine builders dyno there engines at half revs? how do you know he didn't edit out the warming up of the engine?
الله يعطيكم العافية شغل رائع
ومتعب
محرك معقد وفيه شغل كتير
20:40 Yeah, destroy those freshly fitted, not broken in piston rings!
brand new bikes are redlined on a dyno at the factory....it does not hurt them.
@@MrKdr500 Wrong. They are being tested. But never to a degree which may damage the engine.
I suspect that the saving grace here is that the piston speed isn't high on these small cylinders, a feature that helped Honda have decent reliability with their super high rpm engines of back in the '60s. A bigger bore, longer stroke cylinder engine develops much greater stress on the rings and piston and calls for a more gradual break-in process to give good longevity. Still, I see so many these days abusing engines because it's somehow "cool" and manly to do (like running an engine up to the rev limiter and holding it there with no load) and it's not encouraging to see in any way.
thats what i do after rebuilding my engines.if you didn't do right job it will break.well done my guy.
У мастера Сохиб Мехри как всегда всё классно просмотрел без перемотки от и до
Excelente restauracion, me fascina ver como vuelven a la vida motores abandonados. Saludos desde Argentina
Nyarios naon a?
В конце показан режим быстрой обкатки) завёл и в отсечку дубась) герметика конечно не пожалели)
может забили про обкатку ???
Как и про затяжку динамометрическим ключем шатунов😁
@@alexkositsin213 ключ есть 16:08
Smallest 4 cyl I've ever see
Nice one dude
නියමයි නියමයි. සහෝදරවරැනි. ඔයාලට ජයෙන් ජයමවේවා.
A mechanic with four arms ! Impressive.
Brother waiting for MC22 Full restoration of the bike ♥️🙏🏻
#LovefromTamil
Old crankshaft&rod bearings and this engine rev 20k…nice job
po q d mais esse motor ficou top essse trabalho foi uns dos melhores que eu ja vi esse motor ficounzero parabems😉
guys i appriciate your works and i am a big fan of you...i wish i could be one of your students
Can't believe this engine uses gears instead of cam chain..😮
Really want this engine, but super rare in my country..well it exists tho, but rare af
Видос интересный, все четко, но в следующий раз обрати внимание на на замер цилиндра нутромером, это обязательно и притирку фасок клапанов.
У них в деревне 20 млн индусов, и все меряют все с детва ногтями. Народный индусский замер еп та ть....Других приборов измерительных в деревне нет, ибо мерять ими заподло.....
සුපිරි අයියේ ඔයාගේ වැඩ සුපිරියටම තේරෙනවා
You did that before, didn't you? When you took that engine apart, I thought never in my life will he be able to put it back together again. But you did it! Congrats!
its a every common bike here so i'm pretty sure he had worked on a few before.
Giving this a thumbs up because he wore a face shield when using the grinder. Safety tomorrow is a day too late!
great to watch as allways you are awesome loved the video
For those of you, who have never rebuilt an engine before, do NOT do what this guy is doing !
Show us how its done otherwise you are not helping
@@newtonmutea , thats your opinion, which you are allowed, but you are not allowed your own facts. But hey, go ahead and follow poor workmanship. good luck.
@@flexjay87 I don’t remember giving any opinion i just made a request. Can you differentiate between the two?
I abre a with @flexjay87. The video shows only a dessassemble and reeassemble. No craftsmanship in any part. That guy is careless with the inner parts. No analysis and markings in the pieces, for example, the conrods and its places. Man, if you dont take care of this things... bye bye engine in a short period of time, and you dont know what happened. Cause you are just a assembler not a careful mechanic. Its visible... by the way that is a hell of a engine! 18.000 rpm... if you dont take care of this things. The blow is certanly. Sorry for my english... Im learning.
@@EduardoHenrique-yl4jg it's a relaxing video to sleep, if someone wants to get a reference or to actually rebuild an engine he will go to another channel aren't that dumb.And I don't see any carelessness as you call, he used new inner parts, he used a torque wrench where he was supposed to use I don't understand specifically what is your problem I have definitely seen worse rebuilds, this is one is ok
最高！from Japan
I just would number the pieces of the same kind before removal in a way to be able to put them in the same position again, avoiding any swap, just a tip. Good job anyway.
My first reaction too and they running it to redline with new pistons!
Nice video 👍
Full bike restore please....
The way like a person just wake up from sleep and running with full speed, wtf!
Agree that's terrible
You did a very good job on that
This channel is SO GOOD. Seriously, it's a pleasure to watch!
They are from sri lanka
you boys are amazing! Wish i could send you my MC19 engine
This disassembly is quite impressive with only very basic tools
Yep, shoulda been using some of them harry potter magic tools....😡
Parabéns pelo belo trabalho !!
A edição do vídeo tbm ficou Boa conseguir acompanhar a desmontagem e montagem.
Parabéns.......
That is one of the cleanest motors you have ever restored.
I appreciate your interest and work brother 💪💯 and I also wish Auto makers bring back 250cc 4 cylinder bikes back🙏
kawasaki did with the new ZX-25R but its pretty expensive for a 250cc
@@kev8943 that's for sure
Por fin una restauración de un motor de motocicleta deportiva, ME GUSTA 😉😉😉
Es un 250 de deportivo no tiene nada
Love from Indonesia....
Beautiful Work👌👌👌👌👌
Un crack, yo estoy restaurando un igual pero no hay respuestos acá en Argentina
MUITA TRAQUINAGEM PRA DAR DEFEITO, MOTOR BOM É HARLEY DAVIDSON 🥺🤓🥸
Excellent job 👍👍👍👍👍
Nice job I like this engine
Boyası olmadı başkan. Fırın boya yakışırdı bunca emeğe. Ayrıca rodajda motor daha dur ne basıyorsun :)
O trabalho que vc faz é incrível 👍
エンジン形式はMC14Eだよね。というか純正のオーバーサイズピストンがあるの？
1年前にホーネットを自分でフルレストアしたけど、手に入るんだったらボーリングしたかったなぁ
බයික් එකේ එකත් ඕන අයියේ ඉක්මනට 😍😍😍😍 සුපිරී
Hell yeah, now this is a video i approve.
excellent video
where re u guys from (කොහෙද ඔයාලගේ workshop එක තියෙන්නේ)
Nice engine👍
Excellent video
This video can be applied to almost all Honda CBR250 fours MC14, MC17, MC19, MC22 and CB250 Jade MC23 and CB250F Hornet MC31
Remember to have a original service manual in hand in case of any doubts about the assembly of this fine little piece of japanese motorcycle engine along with the parts catalogue to order the correct parts for each engine variant
It is not advisable to redline a new or fresh rebuilt engine unloaded without breaking in first, you might damage the engine earlier, just stay up to 10000 rpm max until hits the first 1000 miles and after the first oil change and filter service, after that you can rev it to the redline of 18000 rpm in a free highway at 100 miles per hour
Enjoy that little crotch rocket, those sweet bikes are not longer made by Honda anymore
ZX 25R exist.. You wouldnt be disappointed i promise😉
Cómo suena ese motor por Dios! Hermoso laburo el que haces...
Nice work mate!
👍👍👍
Rebuild Parts list please ?
Wow very nice video brother 👍
Otra estupenda restauracion completa del motor CBR MC19 , mis respetos y saludos desde Venezuela.💯👍👊🤘🤘
привет из России
Beautiful job! Was it necessary to machine the bores and cut the crank?
You should graft two of these into a 500 V8. Allen Millyard style.
I really do appreciate in what YOU do, my friend! Another marvelous restoration project. Outstanding!
Bravo le premier démarrage à froid
අඩේ ලංකාවේ එකෙක් නේද බං...😳😳😳🙏🙏
Took me 8 minutes into the video to realize you guys were Lankan, good job with the limited tools available! I won't dare touch the gearbox on a 6 speed inline 4 though 😅
Nice channel, keep it up!
Excellent Job Guys!!
OK that's my two engines reconditioning before breakfast, only another four to go until lunch
Impressive🤯🤯
You make it like seems easy!!!!!
But it's not 😳!!!
Good job sir👍👍
Im a car guy and i know that motorcycle engine are more tricky and complicated due to smaller size etc.
🔥🔥🔥👍 keep up the good work bro
Excellent work👍👍👍. Thanks for sharing
1. please take it easy on the cold start fresh rebuild limiter bashing
2. did anyone see a torque wrench
3. i guess it works, but id love too see it in a frame and riding
Ufff que bien suena ese motor y con el multiple de escape puesto sonaria mejor
Estimado, que complejidad, excelente trabajo. Felicitaciones.
Now I understood.
1st step of restoration in to spread a big carton on the floor. Many advantages; environment friendly, shock absorbing, easily available
Very enjoyable and relaxing to watch.
Niyamai dinesh aiye
hi grate job. i have the same motor i was wondering where you get you genuine honda parts from?
Excelente trabajo..... Buenas manos
Was the crank worn? Love to know if this was checked off camera.. new shells in a worn crank ?
Awesome! I'll have to reference this when its time to do that to mine.
Nice gift to have
Beautiful noise
Pomen mantap ni... 👍
What did you blast clean the engine cases with? Was it a water blaster or vapour?
These sri lankans can do anything.best
ලංකාවෙ කොල්ලෙක් නේද 😍😍🇱🇰
Please post more on how you clean the heads. Spray with glass, soda, ???
The CBR250RR from the 80’s and 90’s was one of the best and most unique bikes of the period, with good looks and a screaming engine that could rev to 20 000 RPM, no wonder they are so rare, because nobody wants to get rid of them.
ඕක දානකන් බලන් හිටියේ 😎
Jos om bro ku saya hadr kawan baru om bro ku
No mindless jibber jabber. Love it!
ado eka patta . awlak nadda bb ohoma eka paarama rpm gannawata . bore ekata!?
I learning mechanic watching this channel 😂👏👍
Very nice. Well done. All those brand new parts must've cost you an arm and a leg... I have one of these engines, $2000+ in parts for a rebuild...
Nah, look up on eBay/AliExpress for AHL parts
@@viduranisal why would I buy engine parts from China
@@kyledelange7055 Exactly, my point being the parts you see in this video are (almost) all Chinese copies so they wouldn't have cost much in $.
But being a poor island nation, even these parts *would* have cost 2-3 months average salary. Buying all genuine original parts would have cost these guys more than 2x the price of a complete recon engine, and more than the annual income of the average person.
(Almost all parts except the head gasket, notice how there are two - one in a kit with rest of the asbestos gaskets and the original one separately which is the one installed. Spark plugs are _probably_ original NGK Japan too)
Thank you so much for the very informative video..hope my brother will see this so he can repair his mc19 cbr250...thus you have address if maybe we can send our engine for repairing...thank you so much
Unbelievable thank you