How to old technique rebore block cylinder motorcycle
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- Опубліковано 10 сер 2023
- my traditional motorcycle cylinder block honing or corter, how to honing & corter block cylinder? how to hone motorcycle cylinder block? how to oversize cylinder block of motorcycle? how to oversize piston? how to piston Polish? how to bore and honing cylinder block motorcycle part 2? how to honing the motorcycle cylinder block?
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#howto #old #oldtechnology #technique #rebore #block #cylinderblock #cylinder #motorcycle #indonesia #otomotif #video #honing #boring
#honing
#cylinder
#cylindercylinder
#cylinderblock
#cylinderhead
#cylinders
#hondaclick125
#hondamotorcycles
#motorcycle
#honda
#otomotif
#workshop
#indonesia
#pistons
#hondaclick
#hondaclick125i
#korter
#piston
#polish
#seher
#boring
#boreup
#oversize
#machine
#engine
#riken
#pistonring
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I've done this type of boring on my Honda Amigo PF 50. I held the cylinder in the mandrel by the bottom of the sleeve. Boring the cylinder was relalatively easy, but the most challenging task was to adjust the clearance between the piston and the cylinder to be constant all over the length of the bore. I had to adjust between 5/100 and 7/100 mm, and it took a lot of time. But in the end, it worked flawlessly. In the video, we can see the piston is too tight. No honing, no cross hatch. This piston is gonna seize, as many noticed!
Все дело в том, автор неучел нагрев при обработке, загатовка остыла и удивила его.
Muito apertado
As far as engine building I could be considered a beginner as I've done a hand full of rebuilds, but seeing him have to use TWO THUMBS to push a bare piston without rings down the bore made me cringe soo hard!
had this man never learned of thermal expansion or just how critical piston-to-bore clearances are?
@@user-ek6fm1ds2j
No no...ha avuto fretta e così ha ripetuto il lavoro.
Ha fatto anche un altro errore che nessuno dice, la parte inferiore del cilindro deve essere qualche centesimo più larga di quella superiore e lui ha fatto il contrario.
COMMENTS IN THE COMMENT SECTION WILL BE MORE INTERESTING THAN THE weird VIDEO.
Piston being to tight is only one of a bunch of problems. It's going to seize and if it doesn't the smooth bore with no cross hatch is going to smoke.
Need more space for thermal expansion.
he will learn at the hard way soon :P
@@SryImMinimal0815 :D
he will learn the ahrd way or he will never learn.
Поршень должен медленно опускаться под своим весом. Слишком плотная посадка, будет клинить двигатель.
Там тепловой зазор надо дать 5-7 соток тогда будет норм.
Это делается на координатном станке но не на токарном это для кого показывают
@@seriw-196куда мы катимся. идите егэ учите.зачем тебе координатный станок что тут 2и больше цилиндров чтоб точить.а чтоб не выделыватся с креплением можно и 4 кулочковый патрон поставить.
Вот с такими спецами и прикатились
Ждем ролик о заклинившем моторе.
😂😂😂😂😂
If you don't have a bore Gage you're supposed to check the Piston clearance with a feeler gauge. The Pistons too tight.
What about some measuring with more accurate measuring devices/tools ?
I don't know about motorcycles, but my dealings with B&S engines, go carts was interesting. Aluminum cylinders are a lot different than a cast cylinder. I finally had pretty good success honing it to very close to size, then using crocus cloth to finish it, as the rings needed a mirror finish not to wear the cylinder.😊
Ты просто токарь от Бога!!! А точнее человек прихват!!!))))))))
As others have said that piston is much too tight, it should be able to drop down the bore under it's own weight with no rings fitted.
excellent method to test the clearance!
It's so refreshing to see an intelligent comment for a change. Thanks so very much.
Thanks for that, I use to build engines and was also involved general machining, reborning and crank grinding pretty much anything to do with engine repair so I do know a little bit about it, although I have never seen a cylinder rebore done like that but it could work with more precise meshing equipment and a decent honing tool. @@stancoleshill8925
@@Sonomaniaque LOL
Nothing like this in my yamaha 125cc piston was fitted tight after 50k km it worked well not eating oil ot whatsoever. It came like this from factory
He should have answered his phone... It was the entire internet trying to tell him that ain't gonna work...
hes gonna learn it the hard way...
We used to this in the 60’s on small bore and big bore except we just used a ridged stone hone and it worked just fine.
For true accuracy, he should have drilled the holes in the fixture on the lathe. When making a fixture, the best practice is to never remove the fixture until you have finished all of your machining. If you do, you need to chuck it in a 4 jaw chuck, and true it with dial indicators. I just demonstrated this to a friend a couple of days ago. I had made a holding fixture to shorten some VW cylinders to lesson the piston deck height. After I had done this I told him to watch the fixture. I pulled it out of the three jaw chuck, and put it right back in. Turned the lathe on, and you could see that the fixture was no longer spinning true in the lathe.
Lui ha sbagliato anche la misura della piastra, il foro in cui inserisce la canna è almeno 0,2 - 0,4 mm più largo, infatti quando mette su il cilindro gli cade in avanti.
Ha fatto molti errori...
or at least marking your fixture relation to the chuck
Agree it’s too tight. How many .000 clearance ? Maybe.002, barely need to install rings !! As soon as that piston heats up and becomes round…it will seize tight. Nice job on the lathe, ruined by fitting it waaay too tight. Too bad.
.00000000000008
Pode deixar 005 centésimos que aí não tem perigo de quebra
Se ele comprar um micrômetro e um subto fica perfeito
Yes👍
@@DogslegalHow do you know?
Кольца можно и не устанавливать! )) удачи
зря докапыветесь
все учатся на ошибках
кто то на чужих
а кто то на своих
помню тоже лет 25 назад обточил 1 ремонт напильником и пихул в номинал горшок карпат да поплотнее)
Чтоб ресурс был огого и компрессия)
Про напильник шутю- на школьнике сточил и да сделав шикарную геметрию поршня круглую кгурлую и цилинриную есл не считать кривизну конусящего станка
2 ошибки. 1) Надо было обработать торец кольца после снятия и установки. 2) Использовать индикатор рычажного типа.
You keep taking it out of the chuck and putting it back- never do that- once it is centric and bored never take it out until you are finished. Also way too tight. Bike will seize and negate all your work.
Agreed, also only clocked the front of the boar,should off clocked the back also to make sure its parallel before line boaring
That I found irritating too.
Такому мастеру да от души в руки насрать.
That's the scrap metal dealer calling at 7:27 ...
🤣🤣 Brilliant!
That piston is still way to tight in that bore and your technique is all wrong. And I bet you haven't even heard of a crosshatch.
Wow- way too tight- that thing will seize in 30 seconds.
You shoud widen it by .03mm its way too tight 😅
You sir are a wild maniac with all that machining. Looks fun. I'm going to start with one of those hanging drills with a handheld tool for porting and polishing. Little by little we can get closer to having a nice shop.
Мужики расходимся, это видео создано для контента. Автор на этом видео заработал, а не на той "дичи" что на видео нам показал. После того как замерил диаметр цилиндра штангельциркулем можно было дальше не смотреть, про отсутствие теплового зазора и "хона" я вообще говорить не хочу.
Я после расточки оставляю 0,1 а дальше делаю чугунный конусный притир и притираю каждый поршень по месту.
Притир даёт и правильную форму и чистоту...
Professionals Always Professionals keep it up❤
I’d say it’s a couple hundred thou off. My concern is that it seems to be tighter at the base leading me to believe there was too much deflection in the boring tool.
OMG, that needs to be properly honed.
Torques down the bolts with no washers or plates..!!??? You are fired!!
Good job👍
Micrometer? Anyone? Correct clearance? Buy a book, it helps, learn to read first.
4 года катается аналогично расточенный мопед
без микрометров тоже- дымит с самого начала,но я не дымящих 2т моторов еще не видел)
И масло жрет 20-30 гр на литр бензина
ээх а точил бы с микрометром не жрал бы мало
@@AndreyLaran все правильно говоришь! А этот заморский спец пусть писю свою микрометром замерит😂
Being so tight the piston will stack within 10 minutes...
4-5 соток для зазора на нагрев и будет красота!
Дохонингует и все будет классно!
не будет красоты, это не дохонингуешь
@@user-eh8mj1lz7m очень даже будет!
Magic holes Lt.Dan...just touch the ring with a drill bit.
Fellow I knew years ago opened the bore on a 1920's Rolls Royce by allowing the bore to rust out a bit, don't know how long it took before sanding out the rust repeatedly to accomodate the incredibly expensive piston set he had manufactured took.
He seems to be doing everything right, but not correctly. The piston stroke is checked through the cylinder skirt and not from the valve head. The piston is always checked through the cylinder skirt, but where is the thermal gap? And where is hom?
I watched some kiwi sidecar loonies increase the piston size by center punching the entire surface of the piston and then lapping the piston until it would fit back in the cylinder. Stopped the slapping. It was some Bert Munroe shit they learned.
It was called , embloss of the piston shirt. Temporary fix
Поршень должен опускается под своим весам.
ese piston esta muy ajustado en cuanto comience a calentarse se agarra al cilindro .
Good grief, never measured the piston before boring it out, then the honing OMG the cylinder will be bigger in the middle, besides it will lock up without the correct clearance or rattle like mad.
Crap workmanship.
При правильной расточке хорошо смазаный поршень должен опускаться вниз под своим весом хотя бы секунду.
особенно китаский из говносплава дует котрый неслабо от нагрева
Little bit tight
Too tight, needs 2 thou per inch dia bore.
Quả này sẽ kêu hoặc chết máy chặt quá lời chào từ việt nam
Very good!!!
Takie toczenie to tylko w Bangladeszu lub Indiach.W Polsce jest honowanie.Prowizorka i..popękane bloki silnika....
COMMENTS WILL BE MORE INTERESTIMNG
making the threaded holes in the ring should be done before facing
Маленький зазор будет клинить
Creative video, thank you :)
"Old Technique"? no, wrong technique. Even with the tools shown, it's a bad job full of wrong processes. The only takeaway is how to shoot a vid to trigger responses.
Ještě přiber půl stovky tou honovací hlavou jinak to po nastartování zadřeš. Správně vybroušený válec s pístem umytý v petroleji, vyfoukaný vzduchem a namazaný motorovým olejem s nízkou viskozitou a vložený píst musí plynule projít válcem vlastní hmotností za 2-3 sekundy a nesmí se samovolně zastavovat.
Wieviel Einbauspiel sind das denn nun?
Ich will ja kein Spielverderber sein aber bei dem luftgekühlten Zylinder könnte der Kolben schon bei der ersten Ausfahrt fressen. 😬
Where theres a will. Theres a way... Two things : you're supposd to use torque plates on both sides of an aluminum cylinder... And your cross hatch is suppose be at a 45 degree angle...I agree with others piston is fit too tight...
Это сильно плотно, прихватит сразу же, прикатывай, не прикатывай.
Зачем надо было снимать с токарного патрона цилиндр...на станке проверить поршнем было нельзя чистоту обработки??Зачем эти лишние телодвижения...И поршень должен опускаться под своим весом...медленно..А тут даже на готовой детали...его забивают...😮
They let it loose because when engine runs for few minutes the metal expands, and it works perfectly.
Problema:
Si dilata di più il cilindro o il pistone ? 🙂🤔
Ребята, боюсь многих огорчить, но такого ,,колхоза,, я ещё не видел. Это просто ,,атас,, . Кто хочет подробностей- пишите, не стесняйтесь!
идеально сделано, по тихоньку на холостых прикатать на месте и вообще шык получится, я только так точу себе, за 10ть лет ни разу проблем не было. Идеальная работа👍
шкуркой нельзя было хонинговать, абразив в металл набьется, потом сточит все в разы быстрее
@@alexvelotavr3881 нереальная чушь.
Вот так технологии 😄
Снимать шайбу нельзя было.
5 minutes after engine start...Seize and jam brrrrrrrr
Молодец конечно ( если по русски прочитаешь?) Но как все пишут поршень должен даже без смазки не падать а опускаться без заеданий . А этот маленько нагреется и клинанет...Удачи и С Новым годом
ратсочит еще раз
делов то
Glad this cylinder doesn't belong to me or one of my customers. It will probably seize withing a few minutes running.
First, you are wearing long sleeves while working on a lathe. Second, you are wearing a knit type material when working on a lathe. A short sleeve cotton shirt with buttons will tear before it pulls you in the lathe and makes you into blood pudding.
Your idea of using a plate to mount the cylinder to is good, but the plate should be at least one inch thick to prevent cocking in the chuck. A top torque plate with washers under the heads of the bolts would have prevented marring a machined surface and distributed the clamping force.
You bore within .001 and then hone to size WITH A HONE, not a glazebreaker with sandpaper wrapped around it. You have at least .002 taper from top (loose) to bottom (tight) and God knows how much runout. You ruined the cylinder to save $30.
hoe verneuk je een cylinder?
O.M.G......Time to make the popcorn........
"cool!.. ringless piston!"
That is too tight. At least .002" or .05mm check with a feeler.
buy some feeler gauges and then find out what the piston gap has to be then make it to fit properly you naughty boy.
Nice work so far just piston fitment is too tight of tolerance. Increase bore diameter another .010 and try again.
Заклинит.
Masakra ta naprawa to nie ma prawa po zamontowaniu działać 👿☹️
I used to use a hone back in the day, even if it took all day, you only had one chance to get it right.
Troppo preciso l'alesaggio, col montaggio delle fasce elastiche nemmeno riuscirebbe a muoversi, più tolleranza tra pistone e cilindro👌👋
Mal hecho el bruñido del cilindro
Soy rectificador de motores de gasolina y diésel
El corte del cilindro está bien
Pero el bruñido debe ser con abrasivos adecuados y el ángulo del bruñido debe ser 60 grados 30 grados y con una profundidad de 14 a 18
клина словит от нагрева
Немає місця температурному розширенню 0.05
Does he know what he’s doing? Using a file on the base of the cylinder? Using emery cloth instead of a honing tool? Having to push the piston through the barrel?
Guaranteed until the end of the road, if he’s lucky.
Извращение😂
Can i make from 50cc to 150cc ?
For real too tight.. Good job though with just a lathe.
Chào bạn hay quá 👍🥰
Muy mal rectificado,queda demasiado prieto,ese cilindro no dura ni 1 dia y esperen a ver si arranca la moto,por que no necesita ni secmentos de lo apretado que esta,en cuanto entre en calor si llega arrancar,se espande y gripa,saludos.
🤣🤣🤣🤣po 10 kilometrach spuchnie i się zatrze . Za mały luz ...
Tanto per dare un'indicazione precisa,dal manuale Piaggio del motore 50cc (Ciao,Si,Bravo,Grillo,etc,etc) viene indicato un gioco tra pistone e cilindro di 12,5 centesimi di millimetro,cioè 125 millesimi di millimetro,se Piaggio dopo oltre 50 anni di produzione indica anche i 5 millesimi,un motivo c'è!,parecchi anni fà litigai con un "rettificatore" perchè mi fece 10 cilindri di quel tipo lasciando solo 6 centesimi di gioco,la giustificazione fù "eh,ma se lascio 12,5 centesimi il cilindro scampana!" per i non italiani scampana=è rumoroso,dovetti fotocopiare la pagina del manuale e portargliela...
PS me ne accorsi perchè grippai i primi 3 cilindri nel giro di prova,era il periodo del passaggio dalla benzina "rossa" a quella "verde"...,trovare un rettificatore in gamba è difficile.
but what about chromium layer
too tight , will heat seize !
Muy buen ejemplo de cómo No se debe hacer.
Eso no vale; la tolerancia ha de se de al menos 0.04 mm y no se debe de conseguir en el proceso de bruñido, sino de rectificado. Con la fuerza que se requiere para desplazar el pistón con el dedo por la superficie del cilindro, gripará en menos de 5 minutos. Es mi opinión. Saludos!
Притир. Дает точность..а это халтура...
It's too tigh..
E os centésimo de folga , vai travar,
gGTP = generaly tight piston this is a willisism invented by Harrold Willis director of Velos ltd of Vitoria Rd Birmingham he was intermaying that you need agood ratteling fit then it might not sieze up .nice finish on the bore was the lap made of rubber ,wood or some sort of soft metal ttfn&ty
Nice
Mantapbos
Ходить не будет.
Так не пойдет! клин на первом километре!
Это делается. Разжимным. Притиром. Из чугуна. Или меди.
гдеж его взять то
@@AndreyLaran сделать самому ничего сложного нет ..потом мелкий корунд и керосин .
It's better to resleeve the cylinder.
to tight and no crosshatch on the hone marks.