not many people know , change the cylinder head compression solid 

Real deal tuning, the rod fill and lathe work are wizard 👌

That was a beautiful finish hats off to you good folks

a radius edge lathe cutting tool leaves an almost polished surface when cutting off excess aluminum great job increasing the compression ratio

Muito competente e ferramental tudo prontinho e nas mãos.

на изготовление головки цилиндра применяют сплав алюминия и магния. напайка на него алюминия со временем отскочит ( разница в тепловом расширение). направляющие втулки клапанов и клапанные гнёзда вывалятся ( после воздействия высокой температуры произойдёт прослабление посадочного размера). ни когда так не делайте, проще осадить ниже цилиндр или головку . пробовали наваривать подобным образом электро дуговой сваркой в среде аргона ( у меня свар. стаж 26 лет, 2 диплома с личным клеймом), после мехобработки и установки крышки цилиндров двигатель ( ГАЗ-52) отработал 1 день и на второй заклинил. оборвалась наваренная часть. при тщательном осмотре на всех наваренных местах обнаружили трещины.

Very clever and you have excellent grinder control…

Show de bola o trabalho que vc fez parabéns muito bom

If you have a good supply of old cylinder heads from cheap motorcycles to practice with. why not give it a go. You lose very little if it fails but gain a lot if you succeed. This guy has skills beyond the average shade tree mechinic.

Dudes got talent

Good skills, I enjoyed watching.

Beautiful work

A new combustion camber!

pure gold my friend you do magic

Excelente trabajo maestro saludo desde Ica Peru

Keep it Up Brother Knowledge you are sharing to Others GODBLESSED

This is the definition of built not bought. Absolutely fantastic and very Inexpensive, this is exactly what you buy from those expensive retailers, you just don’t see how it was made.

Always love your work ❤️

grate work guys port and polish the intake and exhaust as well.

Keren bang, Channel nya di tonton sm orang luar... 👍🏼 Semangat terus ya untuk berkarya & memberi ilmu 🙏🏼

You have good skills. You are on the right track contrary to what others may say. You just need a little theory. To de-shroud the valves, the intake is the most important. For the intake, multiply the valve diameter times .25 for the lift, this is called the curtain area between the valve face and the valve seat. Now multiply the valve diameter times .20 for the distance from one edge of the valve to the combustion chamber wall (all sides) at the lift previously calculated. The area of these two calculations are each equal to the valve area and are said to be de-shrouded. Now for the exhaust valve, about the same except we multiply the diameter times .14 (in leu of the .20 previously) for the side clearance between the edge of the valve and the combustion chamber wall. The lift is the same calculation. Now all you need to do is use your ball grinding burr to blend the combustion chamber wall between the valve seat and the new point that we have just calculated above. Not many know this and most that do are not willing to share. Now use low/flat dome pistons to achieve you compression. High dome pistons are very inefficient. Good luck and keep up the great RU-vid videos.

Did similar to a gs 1000 suzuki head for a speedway 3/4 midget on alcohol in 2009 - worked great @ 12.5 % compression

Now that's impressive 😮

Wow, just wow. No thought to piston squish or frame front, not to mention super shrouded valves

A+ for effort.👍👍👏🏻👏🏻

An engine technician who manicures. Now that's rare.

昔トヨタのLASREヘッドの燃焼室をこんな風に削った事がありました。 何か懐かしいな。 街工場でこんな事が容易くできるなんて、凄いですね、すごい技術です。

Keren bang... Terima kasih sudah berbagi ilmunya

Keep it up, thanks for the info :)

Wow begitu caranya baru tau, makasi ilmunya mas sukses selalu👍🙏

Love that's he's just ripping a dart so natural in the man's space fuck yea buds

que perfeição 🔥🔥🔥🔥🔥

I wonder how many engines this guy blows up trying all this off the wall stuff. The info on how to improve performance is ready available to anyone without having to guess at what needs to be done.

Very nice work, 👍

Hadir nyimak boss ku suksesselalu buatbossku 👍👍💪💪💪💪

Wow...Superb Craftsman skill...

It's great to see what can be done - in order to raise the Compression Ratio. My theory on this is very simple: When Performance goes up, Reliability comes down. Additional load on the Crankshaft / Mains / Wrist Pin / Big End Bearings. Additional engine heat that needs to be dealt with. Just buy a Bike with a bigger engine.

First time I’ve seen valve clearance cut out of brazing rod filler using the valve guide for alignment. I’m sure there’s a few ways of doing it and I’m not a machinist but always cool to watch one. Nice job though, checked with a mic and everything. The carbide burr on the cordless drill is also one of my favorite tools! Also the makeshift flap sander been there too

How precise are these measurements. This is the way we worked after WWII

Like another commitment said: get/ make a domed piston. I like the way you have done it though

На мопеде с подобным мотором FM152 (110см³) проточил плоскость головки на 1 - 1.5мм. Само собой резкого подрыва в мощности не было, чуть по увереннее в горку стал ехать.

Nice work

Terus bikin kontrn ke gini mas. Jadi kita tau susahnya bikin mesin.jadi ngga ngeluh soal biaya jasa bubut

Es usted un CHINGON 🤟

ga ngerti mesin tp enak aja liat videonya ... uraaaaaa 😁

Works good, tnx

Mantap gan modifikasinya

Que trabalho top .

Nice looking head…boy!!!

Modifier le Taux de compression ?!..... magnifique !

It’s going to work like a charm hi comp min 1000hp on back tyer all the power you need 💪🏼😭

1st rate & damned impressive !

11/1 compression ratio! (excellent!) Horsepower rules!!! Great to see budget hot rodders in India do this sort of stuff.

Terima kasih tips nya

David Vizard would have a fit!!!

Keren bang sangat bermanfaat ilmunya 👍🏻👍🏻👍🏻

good job

muy buen trabajo

Здорово, ты на все руки мастер.

good luck to my master, you made a nice engine top cover revision, if possible, you can share the top cover valve seat replacement in a video, that is, the valve seat replacement.

Good job

Pra quem tem boa parte das ferramentas necessária o trabalho fica outro nível

I wonder if they CC'ed the chamber before and after the work? Or if they were trying to make a diesel engine?

Assalualaikum ikut nyimak nambah elmu sulses slalu🙏👍👍👍😀

30% клапанной щели упирается в стенку. Повышение степени сжатия в ущерб наполняемости. Для головок типа hemi (полусферическая) лучшее решение поршень с вытеснителем.

Hi Kuli Tehnik, can you tell me what did you use to weld the head?

Класс) А когда успели под свечу отверстие сделать? Разные головки в работе и в конце видео?(

for changing CR.. we usually used dome/semidome piston rather than adding the head/chamber bcs. stock piston can only hold ranging 11:5 -12 CR.. or else stock piston get easily melt/damage.. changing dome forged pistons increases CR with high durability up to maybe 16 CR .. its the safest and easiest way to modify CR.

My dad always said gas is like dynamite the more you compress it or tamp it the bigger the bang and power ! I think as other comments said dome piston would be better . But there are so manny things that can be done to get more . Like if he had the dome piston then he still could have filled in a little . Then port and polishing some dimples around the intake valve pocket . Concave intake valve head to create more vacuum to get the fuel and air in . Then undercut valve stems and a bigger lift and duration on the cam . Then hi flow exhaust and a air cleaner / filter for better flow . Then knife edge crankshaft windage add on’s then higher octane fuel . There is way more than that also so you can see what I’m saying . It’s a thing we’re you get everything you can and those 20 hp add on parts with everything working together be one 30-40 hp parts because they all complement each other and help each of the other parts to produce more !

Kaw2 mantap ,👍👍👍

Este si es un verdadero aumento de relación de compresión sin aumentar la cilindrada

I am simultaneously impressed and horrified by what I saw here

At the end of all that, he just ended up with longer thumb nails

Thanks!

Mantap ...

参考になりました。素晴らしい

El trabajo artesanal es hermodso, con las herramientas adecuadas, aunque debe de quedar una compresión como de 13 o 15 a 1, no tengo idea, en una moto normal de calle de fábrica de esas chinas si viene 8 a 1 o 9 a 1 es mucho, yo apenas le quitabas 1 mm as la tapa y ya subía 10 a 1 y cambiaba un montón, ni me imagino con todo ese cambio. El tema que la duración debe de ser mucho menor también a no ser que todo lo demás, bielas, pistones, etc sean forjados y de la mejor calidad. Será para arrancadas o ese tipo de carreras. Me gustaría saber para que las usan .

nice

i mig welded a head like this before. used a grinder to take the majority of the excess weld off, used a Dremel to reshape the chamber. then used 120-1000 grit sandpaper on glass to resurface it. my only fear is thats an overhead cam engine so when you shave the head more then a few thousandths it actually affects the timing significantly because of timing chain slack. push rod engines suffer from something similar were once you shave so much off you need to get new cut to length push rods.

Gorsze napełnianie komory cylindra, spowolnienie przepływu. Lepszy efekt daje wypukły tłok.

AQ sub dah. Biar tau info tehnik

Beau travail

Love it brilliant 👏 how did you get the lug hole

Gw udah pake cara kaya gt mas.. Dri 2005 🤭 Mantep,padet banget kompresi 😁

You can use different cylinder head to change compression ratio.

凄い技術力ですね。幾何学的な圧縮比が大きく変化していると思います。 但し、バルブの周囲の壁によって吸入抵抗と排出抵抗が増加する方向で影響を受け、実質的な圧縮比は低下するかもしれません。

Parabéns

Mantappp ❤

What tool did you use to mill?

. Aumentar la tasa de compresión, es buena hasta cierto punto... Sobrepasar del 10, haría que el efecto sea exactamente contrario al deseado, pues puede hacer que la mezcla aire/combustible se vuelva líquida, y no gaseosa... Al convertirse en líquida esa mezcla, no se logra buena combustión, y por consiguiente no genera la suficiente explosión o fuerza de retroceso del pistón... . La tasa de compresión con el mayor efecto, está aprox al 9... Ya hemos hecho diferentes pruebas en un taller... .

Trabalho bem feito

Kepalang pinter ni orang jos ngeng😂

Pemain baru y mas.....gw main begitu dari THN 2001 🤭😂🤣😂🤣😂🤣

dobrze wyszło

Me parece que sube mucho la relación de compresión por lo que genera exceso de temperatura sobretodo en un motor refrigerado por aire, pre detonación disminuyendo la vida útil del conjunto de pistón viela y cigüeñal

Почему до и после не замерил объем?

Hola, dejastes el mismo diámetro de la Válvulas.....???

Ilmu bagus 👍👍👍

mantab boskuh,hadir ikut menyimak caranya boskuh

Mantap 😁😁

Good job kawan goodluck