not many people know , change the cylinder head compression solid
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- เผยแพร่เมื่อ 25 ก.ค. 2022
- #automotive #racing
not many people know, changing the compression density of the cylinder head using a racing piston 58.5 with a 28 in x 24 ex valve, this time is the process of how I work on a 4 stroke cylinder head which I changed to a compression solid that many people don't know
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Real deal tuning, the rod fill and lathe work are wizard 👌
Wow, just wow. No thought to piston squish or frame front, not to mention super shrouded valves
That was a beautiful finish hats off to you good folks
Very clever and you have excellent grinder control…
A new combustion camber!
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.
Actually it is the definition if hacked not though
@@bad406camaro please explain? I’m sure you have decades of experience to share with us? We can’t wait to hear it…
@@MrSagerific95 Guess you were not able to read my next comment (posted 2 days before your arsine comment) I am sure you are a smart guy you can figure it out
Yup and they don't use nothing fancy to do it either
Inexpensive like a lathe
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.
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.
Muito competente e ferramental tudo prontinho e nas mãos.
Completely destroying a combustion chamber, the return of the sparkplughole was a miracle, although out of sinc.
Show de bola o trabalho que vc fez parabéns muito bom
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 TH-cam videos.
This is great information buddy…trying to get this guy going in the right way… you laid down the formula for a smooth flowing head!!! Will he take this information and run with it?!! Is he grinding on his own heads as I write this??? I love 2 stroke!
In
Well aren't we smart!
Thanx buddy
Good skills, I enjoyed watching.
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.
An engine technician who manicures. Now that's rare.
a radius edge lathe cutting tool leaves an almost polished surface when cutting off excess aluminum great job increasing the compression ratio
Keep it Up Brother
Knowledge you are sharing to
Others
GODBLESSED
grate work guys port and polish the intake and exhaust as well.
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.
А почему тогда просто вареные ГБЦ ходят? ведь не однократно вниз появляются трещины и их заваривают.
@@opel5956 чуешь разницу? Или маленький кусочек подварить, или целый слой наварить, и разницу в нагреве при сварке.
Так у него после наплавки и обработки возле седла впускного клапана тупо раковина осталась!
Вы хороший специалист таких сейчас очень мало, очень жаль , в основном компьютерные ,,гении"
а напайка кастолином? знакомому несколько раз приваривали ухо генератора все равно быстро отваливалось вот интересно если бы изначально запаяли кастолином держалось бы или нет
Hi Kuli Tehnik, can you tell me what did you use to weld the head?
1st rate & damned impressive !
How precise are these measurements. This is the way we worked after WWII
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
Ю
thats how old valve seat cutters worked
@@tomthompson7400 makes sense, centered on the center of the valve stem. Just now days all the fancy multi axis machines and all don’t seem to use that method. Like you specifically have to setup the piece in relation to the cutter rather than use something as a guide. Then again a serdi machine uses the guide so maybe I’m mixing up some cnc operations with valve seat cutting.
I’d be wondering how different the characteristics of the brazing rod are from the cast aluminum. Like is that combustion chamber gonna expand at different rates because of the two different alloys?
@Water-Man I’m thinking cause some people would find it boring watching him smear brazing rod around lol! That and you can be as messy and as ugly as you wanna be then cut to when it’s semi prettied up
Like another commitment said: get/ make a domed piston.
I like the way you have done it though
Did similar to a gs 1000 suzuki head for a speedway 3/4 midget on alcohol in 2009 - worked great @ 12.5 % compression
I wonder if they CC'ed the chamber before and after the work?
Or if they were trying to make a diesel engine?
pure gold my friend you do magic
Keren bang, Channel nya di tonton sm orang luar... 👍🏼
Semangat terus ya untuk berkarya & memberi ilmu 🙏🏼
Beautiful work
The flow rate of the modified head would be much less than the original so whatever HP gains you made from compression would be offset by the lower volumetric efficiency
i am gong to say the same,
Terus bikin kontrn ke gini mas.
Jadi kita tau susahnya bikin mesin.jadi ngga ngeluh soal biaya jasa bubut
Excelente trabajo maestro saludo desde Ica Peru
Love that's he's just ripping a dart so natural in the man's space fuck yea buds
What tool did you use to mill?
Hadir nyimak boss ku suksesselalu buatbossku 👍👍💪💪💪💪
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。
how it is perform after that?
Dudes got talent
Modifier le Taux de compression ?!..... magnifique !
11/1 compression ratio! (excellent!)
Horsepower rules!!! Great to see budget hot rodders in India do this sort of stuff.
Indonesian
seems to me the flow in and out are pretty fuckerd up this way , all but powergains ,compression isnt all.
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.
It’s going to work like a charm hi comp min 1000hp on back tyer all the power you need 💪🏼😭
Hola, dejastes el mismo diámetro de la Válvulas.....???
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.
I am simultaneously impressed and horrified by what I saw here
idem
How did you clear out the plug thread?
How you made the plug loop?
At the end of all that, he just ended up with longer thumb nails
Always love your work ❤️
Wow begitu caranya baru tau, makasi ilmunya mas sukses selalu👍🙏
David Vizard would have a fit!!!
Sesudah di Las dan di squish ulang, seting klep dan bos klep nya di ganti ngga gan?
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.
High dome pistons can reduce power if they inhibit the flame spread. They also increase the combustion chamber surface area, which can lead to overheating of the piston crown by absorbing more heat, which in turn reduces power. As always, what is best will be a compromise.
@@Wexdue29 thats why theres flat/blank piston to create you own design not just dome.. Forge pistons are durable to withstand possible damages.. There's less damage in the crown..
what did you get for
effect
So it looks like you turned a Hemispherical chamber into a flathead. Do you have before and after power test?
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 .
Valve shrouding.
Need to take some metal off around valves
Also will the metal bond to the cold head?
Good though.
Nice looking head…boy!!!
What gas is used in this type of welding?
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 !
Assalualaikum ikut nyimak nambah elmu sulses slalu🙏👍👍👍😀
Lokasi mana om?btw udh ad yg udh jadi blm head mio klep sonic nya??
Wow...Superb Craftsman skill...
Very nice work, 👍
Now that's impressive 😮
How much is the increase of Power for the engine?
How did the moto work?
Keep it up, thanks for the info :)
Este si es un verdadero aumento de relación de compresión sin aumentar la cilindrada
A+ for effort.👍👍👏🏻👏🏻
ga ngerti mesin tp enak aja liat videonya ... uraaaaaa 😁
Love it brilliant 👏 how did you get the lug hole
The spark plug hole
Почему до и после не замерил объем?
Pra quem tem boa parte das ferramentas necessária o trabalho fica outro nível
Se você vender a oficina talvez compre o torno.
Класс)
А когда успели под свечу отверстие сделать? Разные головки в работе и в конце видео?(
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.
its timed by the chain to crank so timing is same as before , my biggest cincern is the space for valves and mostly flow for power and airspeed , this did nither but peek compression .
@@transdetendal The timing is set by the distance between the cam and crank and how many chain pitches that ends up being. Decking the head changes that distance, retarding valve timing. To fix the timing, you'd either need to redowel the cam gear, get an adjustable gear set or do what modern auto engines do and don't even bother doweling the cam, lock the crank and cams with special tools and then just hope and pray the friction between cam and vvt phaser does not give out.
How do you not know this?
@@pontiacg445 timing is what it is ,never heard of timeing changed with removing matirial to get more compression , the chain sets the time so a tight chain dosent change setting between cam and crank ! never ever had a issue with timing that way and never will unless the chain skip a tooth or break , same goes in a car engine with chain
@@transdetendal Yeah, I am well aware that you have never heard of timing being changed by decking the head, that much is obvious. That doesn't mean it's not a fact, it just means you can't comprehend it. I am sorry you are geometrically challenged...
Type "timing changed decking head" into google if you wish to educate yourself.
How did you calculate Compression before and after?
buret, in oil
que perfeição 🔥🔥🔥🔥🔥
30% клапанной щели упирается в стенку. Повышение степени сжатия в ущерб наполняемости. Для головок типа hemi (полусферическая) лучшее решение поршень с вытеснителем.
У паков ты с голоду сдохнешь, умный такой. Впрочем и у нас есть чюдики полирующие коллектор изнутри...
@@dmitriivoevodin404 Вы сами поняли что написали? И где это я про полировку каналов упомянул. А свои пожелания о голодной смерти оставьте себе.
Лучше б турбину установил.
What's the new compression rate?
What's the part for the cylinder head to heat up, bro?
.
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...
.
У меня 12 в атмосферном двигателе по заводу
Depende de cuanto aire tenga el cilindro, lo importante es comprimir aire no el combustible.
Gw udah pake cara kaya gt mas..
Dri 2005
🤭
Mantep,padet banget kompresi
😁
Untuk motor std boleh
@@resepzenius1574boleh minumnya Ron 98
Now running alcohol or diesel?
Gorsze napełnianie komory cylindra, spowolnienie przepływu. Lepszy efekt daje wypukły tłok.
Nice work
I have thought of this but would never attempt it because I don’t have the ability to preform it . Good job hope you have good gasoline tho
Saya punya motor honda supra fit tpi sama mekanik sudah di rubah sudut payung klep nya pake in 28 ex 24 seher 54MM apa perlu di bikin seperti itu untuk mengejar kompresi nya
Keren bang... Terima kasih sudah berbagi ilmunya
Setingan klep nya itu kalo da kena las apa mas bisa di pakai bang?🙏🙏🙏
Mas alat yg buat ratain coakan sinting klep apa mas yg ada di video lagi belajar bubut mas
Mas head grand bekas 54,5 terus pakai piston 53 klep shogun mau dibikin kompresi 11:1 habis beraoa kira² piston pakai npp
Es usted un CHINGON 🤟
Le prestazioni sono aumentate?
This should come with a very different camshaft diagram giving a lot of more inlet and outlet timing if not ....
So what is the compression ratio now? It looks to be really high. Are you trying to build a diesel?
No, he’s just melting and cutting and facing and polishing to see how many clicks he can get.
The port design kills flow anyway so without filling it and drilling new angles, flow will be limited. We run into this in garden tractor pulling. Port design is for low compression lawn tractors that dont turn a lot of rpm. Yet, pro builder are getting 100+ hp out of 25hp kohler twins running on alcohol.
You can use different cylinder head to change compression ratio.
BRAVO, GREAT SKILLS YOU POSSESS. THE COMMENTS ABOUT SHROUDING THE VALVES. OBVIOUSLY THIS IS NOT THE FIRST TIME YOU HAVE DONE THIS AND YOU MUST HAVE DONE IT MANY TIMES BEFORE WITH GREAT SUCCESS, AND IT MUST WORK BEAUTIFULLY INCREASING THE POWER. IF THAT WASN'T THE CASE YOU WOULDN'T BE DOING THIS AGAIN. AM I CORRECT ABOUT THIS THAT YOU HAVE DONE IT MANY TIMES BEFORE. HOW MANY TIMES HAVE YOU DONE THIS?
Turn off the Caps and stop screaming !!
@@6pack1204 A FEW DAYS AGO. A FIRST GRADE KID TOLD ME THE SAME THING.
@@Frank289100 That first grade kid screamed less loudly?
@@6pack1204 COMPARING YOU TO A FIRST GRADE KID IS THE DEPTH OF YOUR MENTAL CAPACITY.
@@Frank289100 Where did you read that I compare myself to a first grade kid? I think there is something wrong with your mental capacity.
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。
🤣
Muy interesante lo que dices amigo puedes ser mas claro ¡¡¡
@@zoquetetormenta5518 mmm 😒 estás subestimando, por eso ahí editor de chat
ora