How to old technique rebore block cylinder motorcycle

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
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#pistons
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[@Sonomaniaque]

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!

[@user-ek6fm1ds2j]

Все дело в том, автор неучел нагрев при обработке, загатовка остыла и удивила его.

[@user-hf9dl8wk7w]

Muito apertado

[@111455]

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?

[@us4747]

​@@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.

[@anteneupitra]

COMMENTS IN THE COMMENT SECTION WILL BE MORE INTERESTING THAN THE weird VIDEO.

[@Timothy-Wess]

Need more space for thermal expansion.

[@SryImMinimal0815]

he will learn at the hard way soon :P

[@borec326]

@@SryImMinimal0815 :D

[@user-wv1pj6wh4h]

he will learn the ahrd way or he will never learn.

[@bigbelconut]

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.

[@user-uf4hm9lq8v]

Поршень должен медленно опускаться под своим весом. Слишком плотная посадка, будет клинить двигатель.

[@user-fz7dy7wt1v]

Там тепловой зазор надо дать 5-7 соток тогда будет норм.

[@seriw-196]

Это делается на координатном станке но не на токарном это для кого показывают

[@user-qv1zc7lc1w]

@@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.

[@seriw-196]

Вот с такими спецами и прикатились

[@pauljanssen7594]

If you don't have a bore Gage you're supposed to check the Piston clearance with a feeler gauge. The Pistons too tight.

[@bustjanzupan1074]

What about some measuring with more accurate measuring devices/tools ?

[@draywanda]

He should have answered his phone... It was the entire internet trying to tell him that ain't gonna work...

[@anteneupitra]

hes gonna learn it the hard way...

[@wreckum56]

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.

[@holeshot406]

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.

[@taraknathchoudhurisciencet6492]

.00000000000008

[@Dogslegal]

Pode deixar 005 centésimos que aí não tem perigo de quebra

[@Dogslegal]

Se ele comprar um micrômetro e um subto fica perfeito

[@user-yr7vt3tq7m]

Yes👍

[@nevinkuser9892]

​@@DogslegalHow do you know?

[@johnbeckett2624]

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.

[@Sonomaniaque]

excellent method to test the clearance!

[@stancoleshill8925]

It's so refreshing to see an intelligent comment for a change. Thanks so very much.

[@johnbeckett2624]

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

[@anteneupitra]

@@Sonomaniaque LOL

[@kubi1110]

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

[@panther105]

Torques down the bolts with no washers or plates..!!??? You are fired!!

[@davidriley9043]

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.

[@us4747]

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...

[@mkrp4]

or at least marking your fixture relation to the chuck

[@alextiganik]

Ждем ролик о заклинившем моторе.

[@us4747]

😂😂😂😂😂

[@thesep1967]

That's the scrap metal dealer calling at 7:27 ...

[@Pete-ou4cq]

🤣🤣 Brilliant!

[@polvincompoundsadmin5402]

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.

[@bradcarson1967]

Agreed, also only clocked the front of the boar,should off clocked the back also to make sure its parallel before line boaring

[@cryon7260]

That I found irritating too.

[@ArcAngel572nc]

That piston will seize in the bore. Piston to wall clearance should be a minimum .002 so the bore must be .004 larger than the piston. After correctly sizing the bore it needs to be honed with a flex-hone to get a nice 45° degree crosshatch so the wall will properly hold oil to lubricate the piston.

[@user-xn9bq6tt6g]

Ты просто токарь от Бога!!! А точнее человек прихват!!!))))))))

[@user-mx7xd4pk5h]

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.😊

[@oldschool1993]

Wow- way too tight- that thing will seize in 30 seconds.

[@Pete-ou4cq]

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.

[@kubi1110]

You shoud widen it by .03mm its way too tight 😅

[@nevinkuser9892]

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.

[@mrrberger]

"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.

[@RS-vu3df]

Micrometer? Anyone? Correct clearance? Buy a book, it helps, learn to read first.

[@AndreyLaran]

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

[@dissident8758]

​@@AndreyLaran все правильно говоришь! А этот заморский спец пусть писю свою микрометром замерит😂

[@user-il7kj6fk1n]

2 ошибки. 1) Надо было обработать торец кольца после снятия и установки. 2) Использовать индикатор рычажного типа.

[@cm5838]

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.

[@honkie247]

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.

[@MechanicAvenue]

Professionals Always Professionals keep it up❤

[@MotoGatosPerformance]

Being so tight the piston will stack within 10 minutes...

[@berntd]

OMG, that needs to be properly honed.

[@tu3071]

Кольца можно и не устанавливать! )) удачи

[@AndreyLaran]

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

[@paulbalsillie895]

Too tight, needs 2 thou per inch dia bore.

[@adoreslaurel]

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.

[@user-dp5ww4qu5i]

Такому мастеру да от души в руки насрать.

[@dineshkarthik3067]

Little bit tight

[@philipjackson5818]

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.

[@rndullrobinson3076]

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.

[@harolddalesr8365]

It was called , embloss of the piston shirt. Temporary fix

[@frankromero4048]

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...

[@darkovbarbora]

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.

[@donnienicholson6062]

Magic holes Lt.Dan...just touch the ring with a drill bit.

[@jorgec.savaris8780]

Very good!!!

[@user-ch9wk7rt9y]

Ребята, боюсь многих огорчить, но такого ,,колхоза,, я ещё не видел. Это просто ,,атас,, . Кто хочет подробностей- пишите, не стесняйтесь!

[@jorgericardoferreira3029]

ese piston esta muy ajustado en cuanto comience a calentarse se agarra al cilindro .

[@DakianSakar]

Esta mal el piston dilata cuando calienta .. tiene q entrar suelto

[@mkrp4]

making the threaded holes in the ring should be done before facing

[@pilotok8428]

5 minutes after engine start...Seize and jam brrrrrrrr

[@garfield2279]

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.

[@user-eh8mj1lz7m]

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.

[@michaelmorris2513]

Good job👍

[@jezztech]

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.

[@G31mR]

Glad this cylinder doesn't belong to me or one of my customers. It will probably seize withing a few minutes running.

[@kurtler1]

Вот так технологии 😄

[@jediknight2350]

buy some feeler gauges and then find out what the piston gap has to be then make it to fit properly you naughty boy.

[@luigisportelli6004]

Troppo preciso l'alesaggio, col montaggio delle fasce elastiche nemmeno riuscirebbe a muoversi, più tolleranza tra pistone e cilindro👌👋

[@mafosa8519]

"cool!.. ringless piston!"

[@Bianchi77]

Creative video, thank you :)

[@saodimastorneariadimasdoss7841]

Com esse paquímetro barato é complicado

[@annawogaliczko5381]

Takie toczenie to tylko w Bangladeszu lub Indiach.W Polsce jest honowanie.Prowizorka i..popękane bloki silnika....

[@Man_With_Brain.]

They let it loose because when engine runs for few minutes the metal expands, and it works perfectly.

[@us4747]

Problema: Si dilata di più il cilindro o il pistone ? 🙂🤔

[@user-bl6oz1oc2x]

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?

[@user-un7rq7vh5x]

Поршень должен опускается под своим весам.

[@whathappened2230]

For real too tight.. Good job though with just a lathe.

[@camillemarasigan5393]

It's too tigh..

[@christophercollins3460]

Nice work so far just piston fitment is too tight of tolerance. Increase bore diameter another .010 and try again.

[@luckydubeinrc5165]

too tight , will heat seize !

[@A.Mouse_1815]

O.M.G......Time to make the popcorn........

[@nickmoore6727]

get a mic and internal telescopic gauge or borrow some for more accurate specs.

[@juannickholas1172]

Mantapbos

[@anatomipahan1817]

Маленький зазор будет клинить

[@user-ge4jm9nl8w]

При правильной расточке хорошо смазаный поршень должен опускаться вниз под своим весом хотя бы секунду.

[@AndreyLaran]

особенно китаский из говносплава дует котрый неслабо от нагрева

[@jerzyjaoza2732]

Masakra ta naprawa to nie ma prawa po zamontowaniu działać 👿☹️

[@adrianaaraujo8634]

Nice

[@RAKIBHASANRakib-vy5nm]

CNG silendar

[@juanantonioruiz8130]

Muy buen ejemplo de cómo No se debe hacer.

[@philnewcomers9170]

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

[@ChucKsor-dm4eq]

Chào bạn hay quá 👍🥰

[@WidurangaWeeranarayana-dg2pn]

🖒

[@Todd-rk2lb]

cutting oil, hand drill, tolerance to stroke, tolerance to piston ring. ayay

[@user-un7rq7vh5x]

Я после расточки оставляю 0,1 а дальше делаю чугунный конусный притир и притираю каждый поршень по месту.

[@user-zs9nt6ns9y]

Притир даёт и правильную форму и чистоту...

[@user-ek6fm1ds2j]

Снимать шайбу нельзя было.

[@olevaiti4302]

My good, what a bungler. What a workshop and tools (maybe pre WW2).

[@hopmai8580]

Quả này sẽ kêu hoặc chết máy chặt quá lời chào từ việt nam

[@DanielRamirez-vi8nq]

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

[@paulklingler2620]

👌💪❤️

[@user-fo6ju2vb1g]

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👍

[@alexvelotavr3881]

шкуркой нельзя было хонинговать, абразив в металл набьется, потом сточит все в разы быстрее

[@user-fo6ju2vb1g]

@@alexvelotavr3881 нереальная чушь.

[@user-jg6nr9ow4z]

❤❤

[@Fyntizumovih]

клина словит от нагрева

[@MarkusK.-wx9ge]

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. 😬

[@miguelr.c8757]

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.

[@UDINTROPHYCHANNEL]

Good"

[@acbdcd1897]

Заклинит.

[@vareliuxt500]

Le hace falta, esta muy ajustado aún . Para referencia de esto coloque un anillo y vea la holgura se dará cuenta que están casi pegados. Esto no es bueno, con el calor se expanden los anillos y se puede dañar cilindro.

[@cherrypicker8897]

That is too tight. At least .002" or .05mm check with a feeler.

[@franklinferreira2779]

E os centésimo de folga , vai travar,

[@gazza116]

to tight and no crosshatch on the hone marks.

[@ZEUS-eg8jw]

😂... With this clearance and no honing I give it less than 10 km ... and 💥!!

[@user-du6yr1qx5d]

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...😮

[@davebryant6905]

It will seize as soon as it gets warm

[@rpapp]

It's better to resleeve the cylinder.

[@gerardswiers3373]

hoe verneuk je een cylinder?

[@philnewcomers9170]

you got it going round the wrong way ttfn&ty