WOW!!! I'm sure most viewers won't appreciate the trickiness of this task. 25yrs I had a friend whose head cracked on his XS500 motorcycle. We looked around for a replacement but due to the relative rarity of the machine one could not be found for love or money. At the time I worked in a well equipped fabrication shop so I was asked if anything could be done. There was also a well equipped machine shop right next door. I had a look and said "No way". Due to the brittleness of castings, the heat stresses involved,.the concominant distortion and the precision required the job was seen as almost impossible and even if successful it would be likely to crack again soon after. I asked several of my coworkers and they agreed with my opinion. But as there was NO other option we tried it anyway. One of our most experienced welders tried it and the head just cracked somewhere else as soon almost as soon as the torch was applied even though we had carefully preheated the head. So, even in our first world hi-tech fully equipped workshops this job could not be done. Yet here they are actually achieving it on the backstreets of Pakistan, and with primitive equipment. I believe the trick was to do the welding while keeping the head in the 'oven'. Ingenious, I really take my hat off to these guys.

I'm just sitting here watching these videos and I have to pick up my jaw off the floor this is outstanding incredible work

They are evolving. First time i see a table to work on. Good job

Tells you alot about what can be achieved with a simple workshop and dedicated team of people, love the ingenuity and skills of these people

I could watch these guys all day, the craftsmanship is something to behold 👌👍👏

I haven't seen anyone using cast iron fusion welding in the last 50 years other than myself and then I only used it twice. It's nice to know that someone somewhere is still using it. In todays market it had been largely displaced for faster are welding methods. Dumb thing is it was still better than anything out there today.

Ремонт конечно такой себе - двоюродный, но в таких условиях, парням низкий поклон. Руки точно из правильного места растут!

Nyers és csodálatos tudás minden területen, itt ha videókat nézek mindig elámulok! Fantasztikus! 💯👌

Дядько Максим нервно курит в сторонке.

Amazing. I didnt think this could be repaired..but he is a pro.

Большой привет! Много месяцев подряд смотрю ваши видео! Это по сути пособие для ремонта, да и просто информация о том что для человека, думающего, преград почти нет! Реально преклоняюсь перед теми людьми что на видео, хотя сам всю жизнь связан с техникой и именно ремонтами авто, в том числе и при ситуациях когда мало денег в кармане либо у клиента либо у себя любимого, но всё равно поражён. Не унывать и не скулить, прям реально готов пожать руки мастерам! Продолжайте снимать ваши видео, очень они правильные! Корень.

I enjoy watching these young men tenacity, skill, confidence in their work.

I see some very talented machinists and iron workers and welders in this group of guys. I’d be proud to work with them if I was there.

Finally… someone with a bench(s) not working in the dirt.

Preheat before stick welding. Good job lowering local heat stress.

I was a machinist In my younger years these people are great

I got a demonstration video with my Henrob welder showing a cast iron piston ring being used as a filler rod using no flux. Finish up with a machinable weld. Arc welding can work on some cast iron parts too using high amperage and manganese electrode. Have also used chromium electrode for repairing valve seat. What they used here I do not know but it turned out great !! Well done !!! Skilled hands are a blessing !!

Bardzo dobrze wykonana robota. Podziw dla wiedzy i umiejętności. Ktoś wymyślił tą technologię i realizuje w takich warunkach jak widać. Czy działa? Jestem przekonany w 100%, że tak. Nikt by nie poświęcili takiego nakładu sił na darmo. Wnioskuje, że głowica żeliwna więc podziw dla sposobu spawania na gorąco (na grillu ,)),nawęglania płomieniem z niedoborem tlenu, sposobu ustalenia pasowania na cieśni cyrklem i mikrometrem. Wielki szacun. Brawo

It amazes me that this young man could fix that head. Lots of perseverance!

Уважаю мастеровых людей, с руками и с головой! Моё почтение.

That welder is good. That drill press needs a capacitor for starting and maybe a spindle that does not run out.

Such amazing precision with a die grinder, magical really

Brilliant work guys. Your skills put the Western world to shame.

Beautiful job It Is very interesting, In Italy they make this work only for ancient engines because It costs very much.For modern engines they Say: you have to purchase a new engine head. Greeting from Rome 🤝👍

Фрезеровщик вообще пофигист. Не глядя борфрезером херачит. А как у него направляющая бьёт на сверлилке, м-м-м, загляденье.

Technique for welding very good. I thought the cooling cycle looked brave but we only saw a fraction of it. This chap could get a job anywhere! !

Amazing work, great job, you saved the customer much money 💰.

Excellent job greetings from Türkiye 🇹🇷 Masha Allah

How cool watching this video, a master at work. I'm so impressed!

Nice job. Thanks and Greetings from Finland!

imagine what this guy could do with some really nice tools and weeks or months to work on a project

Siete bravissimi con i pochi strumenti che avete a disposizione fate cose incredibili, bravi meritereste di avere attrezzature migliori in futuro, buona fortuna per il vostro avvenire .

Mis felicitaciones y además admiración pues están demostrado que nada es imposible sigan adelante ayudando con los de escasos recursos pues un repuesto nuevo vale mucho dinero

WOW These guys are awesome. Impressive skills, great workmanship..

Nice Video Bro... They are Real Talented and hardworking people , love to Cover them and showing their skills to people.. 👍🏻👍🏻

Grandes abilidades con estos maestros haciendo maravillas

Самое забавное, это потом работает. Не важно что дерьмого. Но работает) значит ремонт был удачный)) главное правильно отжечь головку... и микрометром ловить миллиметры)))

i am totally blown away by their skills, wow

This dude is definitely way above the usual hammer-swinging floor dwellers. 👍

Very good skills and fast repair a cracked cylinder head in a day with only basic tools and equipment.

Great job mechanic excellent work

Tuyet vời quá cô Mây ơi. Cảm ơn cô Mây nhiều nhiều 😍😍😍

As a chartered engineer I am truly in awe of the skills being exhibited here. Health and safety regulations not even considered and the cleanliness of the workplace could be better 😂but by god this fella is talented.👏👏👏🇬🇧

Какие трудолюбивые, молодцы !

True tool makers and machinists.

Excellent engineering skills. A perfect repair. Just shows you don't need a fully kitted out shop to do this work. Very good acid dipped finish. Love how the workshop is by the roadside like this.. ❤️

Creativity & workmanship at its best!!. So sad it's a lost Art now, with 'Planned Obsolescence Anything'. Congrats & many Blessings!!.🙏🙏🙏🙏

Top..parabéns a vocês..like do Brasil.

This is Amazing Work.

Офигеть не встать. Балгаркой в очках пилит.

THIS IS POETRY! NOTHING LESS! FABULOUS!

Unglaubliche Facharbeit !!! 👍👍🤠👍👍

Good job. Greetings from Poland 🙂💪.

Amazing work.

그동안 본 영상중에 가장 완벽하네요

Best work.and worker....Bagdad

Awesome repair. Fun to watch someone who takes pride in their work.

Amazing technique and technology, I think Europe has a lot of catch up !

That alignment stub that goes into the valve guides to enable the valve seats to be concentric is a little bent and the cylinder head should not rock as it does when doing that operatio0n now and later on when cutting the valve seatings. I do not like how he pushes on the head at 16:21, and I shivered at some other actions he took during other operations, but then perhaps I am too fussy and a cylinder head need not be coaxed and treated with gloves as I thought it should. The welder was brilliant in every way and that man knows the phase diagram of that metal he was handling. He is not only intelligent and feels his way through, but he is also a very brave man to handle that little bit of welding procedure!!!!! It is such a pity that our education system does not give enough credit to these people who have the ability to " process" an issue rather than remember information. Most people these days are the proud owners of what they buy and operate and not what they can process and diagnose an entity that needs to be repaired and guaranteed. Such craftsmen do not need any examiner to judge their caliber as the result is in the guaranteed working of the item they produce. Many schools run curriculums where the school thinks that its own examiners will decide the caliber of its students, but real life is not like that........................... our real value is what we can produce and guarantee to work without nature nor luck ever giving us a hand!!

Wow, that was amazing, you guys are professional !!!!!! Congratulations 🎉

Very nice repair.

Nice work MashAllah MashAllah zabardast

13:50 Not sure how round that hole is going to be with the piece wobbling like that

Жесть ...но работает ...после этого вспомнился Водный мир

Good skills, don't know how long the repair will last, but nice to see people able to do it with limited means and without genuine parts! Congratulations, in our (too much) "rich" countries we throw away and replace things instead of trying to fix them, and I think we are definitely wrong.

If I had not seen it I would have said no way that is possible. Incredible what ambitious people can accomplish.

Ellerinize sağlık süper olmuş

So much done by eye touch feel and looking to see if true or straight amazing.

Nice video, thanks for sharing :)

Best technique very Cool

Second question, what is the degreaser/cleaner you were using for the first dip? Lye? Or acid? Very curious.

Very skilled worker. I dont think that he could read a micrometer, but he does great work.

I have to “like” b4 watching these videos, as I’ve not been disappointed to date for the creativity and persistence to get the job done. Just wished the work grounds were a tad neater.

Fantastic work

Such precision tools ... :D :D

Amazing amazing skill and confidence I just wish you wore a safety glasses more often particularly all the time.

I am Impressed !!!!! 👍👍👍👍👍👍👍👍👍

Amazing. All done without any CNC machinery.

BRILLIANT !!

Amazing skills! BMW and Mercedes should learn from this Guys

Im impressed, looks like steel toed shoes, goggles, dustmasks. This guy wants to get old.

I knew it was impossible to weld. AND. OMG. he brazed it. wow I've got lots of cast iron parts that I will be working on now

Respect for those guys!

we were taught cast iron welding at trade school , but you had to peen the weld after welding.the run out on some of the machines amazed me.i can see pre comps and valve seats falling out.and i forgot the after cooling in a bag of lime.

Marshallah! Incredible Job from the so called third world. Nothing is impossible when we have limited materialistic resources and mindful youth. And if I can add something I would say it's great for the environment to refurbish a car to the limits. Marshallah 🤩🤩🤩

And the bill was $19.99! How much for a new head? Easy to be critical, but you have to hand it to these guys; amazingly skilled work with very ordinary resources. Well done.

What amazing engineers!

Great job

great job

This guy is amazing. I wish I had the skills and equipment

soy de pais honduras gracias de mucha ayuda para mi

SUPER!!! 🏆🥇🎯

What did he put in the sleeve when he pounded the new seat/rings in? Is it grease or epoxy?

Good job

good job

Good job 👌👌👌

He's the smart one... He's made a work bench (sort of) and has a chair and work gloves, and shoes...

well done....... go ahead boys

Thats what you call a hard days work!!

If you have this cracked cylinder head to be fixed at local America dealership, They will replace entire new Engine for your pocket $7000.00. I assumed this Cave shop will do for you only $30 bucks to fix filling cracks. Thats a great to have those to do for us.