not many people know , change the cylinder head compression solid
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- Опубликовано: 28 сен 2024
- #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
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.
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 RUclips 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
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
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
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
Very clever and you have excellent grinder control…
Like another commitment said: get/ make a domed piston.
I like the way you have done it though
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.
Love that's he's just ripping a dart so natural in the man's space fuck yea buds
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.
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.
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.
I wonder if they CC'ed the chamber before and after the work?
Or if they were trying to make a diesel engine?
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.
A new combustion camber!
Your better off getting a domed piston to raise compression. You just killed the flow around the valves, plus that nice sharp edge is just gonna cause it to detonate.
That may be true..but how much does a good piston cost versus 20$ bucks in solder in about 3 hours of work...
@@lorenzolanza8431 costwise obviously doing it this way is cheaper, doesnt mean its the better way of doing it. In my opinion what he did to that head isnt going to work well and will more then likely have problems with detonation/hot spots in the head which would lead to more $$$ damage. Which is why im saying, yeah it costs more, its worth just putting a domed piston in it. You'll still have the flow around the valves, and have the higher compression.
Id say context is important. With $100 budget maybe your better off spending $$ on a set of tyres or an upgraded carb, so maby variables. The question you need to answer is what would you do without access to a piston? ie would you weld a dome on the piston? would it hit the valves ? who knows, but the point fron my perspective is a bit of home budget racer performance mods which is half the fun.
Dome piston is more weight than flat piston
Looks like someone has been watching hammer performance work on harley heads you now have a bathtub head. May reduce flow but increase low end torque. It's all in where you want to keep the h.p. at
Terus bikin kontrn ke gini mas.
Jadi kita tau susahnya bikin mesin.jadi ngga ngeluh soal biaya jasa bubut
At the end of all that, he just ended up with longer thumb nails
Very nice work, 👍
Muito competente e ferramental tudo prontinho e nas mãos.
David Vizard would have a fit!!!
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.
Wow begitu caranya baru tau, makasi ilmunya mas sukses selalu👍🙏
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
1st rate & damned impressive !
Now that's impressive 😮
You know that head is based on kawasaki, Yamaha, Honda or Suzuki engine. Those manufacturers put years into flowing those heads to get maximum efficiency & horsepower. You would have been better off just shaving the head 20K, and get the Piston closer that way. Or you just could have bought a Wiseco piston with a high compression, you can choose how much compression you want. I don't know there's easier ways to do that. For sure. And you don't shroud the valves my way at all. You got the talent, you should do something cool like splitting the 5th or 6th Gear, and creating a 7th Gear. I've seen people do this before and it makes a killer transmission, like a Top Gear Overdrive. Much more worthwhile.....
Was thinking the same. Looks like an old ATC 185/200S head from the 80s.
A piston and a lil cut on head would make easy gains...
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
ga ngerti mesin tp enak aja liat videonya ... uraaaaaa 😁
Keren bang... Terima kasih sudah berbagi ilmunya
You would be far better building it up on the edge of the combustion chamber and levelling it off flat, so the piston almost touches it, and leaving the area around the valves totally untouched and open. This is called a squish chamber, you get very good turbulence and flame speed,
It's called "Quench" but yes. You're right. They also fucked up and angled the spark plug at the intake valve. It needs to be angled at the exhaust valve.
@@gadgetdeez7069 there monkeys
Mantap gan modifikasinya
pure gold my friend you do magic
thats why they make high comp pistons
Beautiful work
Можно было избежать половины дурной работы!
Просто отторцевать головку цилиндра,что подняло бы степень сжатия.
Это простое техническое невежество.
После такого прогрева,до оплавления,седла просто выпадут во время работ мотора.
Pra quem tem boa parte das ferramentas necessária o trabalho fica outro nível
Se você vender a oficina talvez compre o torno.
Мне интересно как она изменилась ?)) От степени сжатия ) и в чем супер сила то )))
возможно сим деяниям он низы улучшил, но верха обрезал по-любому
На газ перевел с 76-го. )
Класс)
А когда успели под свечу отверстие сделать? Разные головки в работе и в конце видео?(
Мне вот интересно, не приходило ли в голову этому кулибину, зачем завод-изготовитель делает сферическую камеру в головке, если это сложнее и затратное, чем, просто, про€башить две дырки под клапана....? На*ера себе усложнять жизнь, терять миллионы на ненужных техпроцессах, при массовом производстве? Хотя-бы с этой точки зрения должен был усомнится... За колхоз вообще молчу... Мертвая или же нулевая зона клапанов выросла с нескольких процентов до 50-60... Ору... Поедет ли этот мотор бодрее? Поедет, так как степень сжатия выше, но и расход значительно увеличится, потому как наполнения камеры сгорания, не будет, от слова "вообще", топливо будет попросту выливается через выхлоп.... Парадокс в том, что при настройке/замене карбюратора и ПРАВИЛЬНОЙ доработке впускной системы, данный ДВС поехал бы ещё лучше, чем с этой порнографией... И вопрос на*ера лепить горбатого? Учите матчасть!
Always love your work ❤️
Massive bump in compression. But absolutely kill air flow. I am sure he impressed his friends and even a few internet machinest. But this is a hack. valves are shrouded heavily. There is no quench. there is now a huge wall for fuel to run into and fall out if suspension. But the real question is there fuel available to support a such a big compression bump.
I play with small suzukis, Original looks just like a dr200 head, finished looks just like a GN125 head. Original would have a domed piston to make up compression, so would be swapping for a (probably larger) flat top piston. Much easier to get a flatop piston than a domed piston that works when making a big bore setup. In my case I'm swapping back to the GN head with big quench areas, but with bigger valves installed to get a usable compression ratio, the big bore kit pistons are no good for either head, and I can go much bigger with flat Honda pistons. I think he's probably got the same issues and there's no such thing as a good head available
Valve shrouding.
Need to take some metal off around valves
Also will the metal bond to the cold head?
Good though.
Compression and fuel flow seems to be total guess work. No calculations on the head to determine actual compression ratio.Good luck!
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.
Kepalang pinter ni orang jos ngeng😂
1:47 dafuk did you do? 😮
I hope you've got a flat head piston ^^
I suggest people watch David Vizards RUclips channel on porting, there is legit knowledge for the uninitiated...
This guy had the right idea, just not executed well.
Why did you do this - I don't understand what he did
An! This guy is good. Best way to raise compression.
Gw udah pake cara kaya gt mas..
Dri 2005
🤭
Mantep,padet banget kompresi
😁
Untuk motor std boleh
@@resepzenius1574boleh minumnya Ron 98
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
Hi Kuli Tehnik, can you tell me what did you use to weld the head?
Love it brilliant 👏 how did you get the lug hole
The spark plug hole
Здорово, ты на все руки мастер.
Was that a Porsche 911 2.7 engine trying to fire in the background?
Killed air flow through the valves with the shrouding of the valves. Higher compression? Some. Less power and efficiency? Yes. Changing the piston would be the correct way to performance,efficiency and fuel mileage.
A+ for effort.👍👍👏🏻👏🏻
Not many people know is exactly right and you are one of them from a x motorcycle mechanic and retired machinist I will give you a A in effort and workmanship but you just killed that head valves are so shrouded in can't take in or get out air if compression was your goal you could have machined the head and jug to get more compression that motor will not outperform my 3hp Briggs now
I don’t know enough about engines to really be qualified to make this statement, so let me start off by saying - dope, this is awesome work. Also, won’t this engine literally explode? I mean .. the parts of the engine are rated for a certain air / fuel mixture and combustion - you just altered all of that without changing anything else. I bet money the first kick and rev sends shrapnel into innocent children.
Thanks!
Thank you sir, I hope you are always given health and happiness 🙏
Increase the compression ratio and squish area and reduce the airflow. Don't set it up on a dyno, it all adds up to no improvement and maybe a regression!
Now running alcohol or diesel?
Pemain baru y mas.....gw main begitu dari THN 2001 🤭😂🤣😂🤣😂🤣
bos gak diliatin cara nambah daging alminium nya😄
Buat piston jenong seperti Harley Davidson.. dijamin lebih paten
Nice work
Terima kasih tips nya
Wuasemmmm nyangggg coment orang luar smuaaaa 🤣🤣🤣🤣🤣
Mas bengkel bubut nye dimanehhhh, blh sy tau ???
И можно выбрасывать головку вместе с мотором
With only 800$ you can make full blown 40hp++ from 14hp stock bike here in INDONESIA. Race ready.
Степень сжатия вы подняли, но качество наполнения цилиндра просто ниже плинтуса. Наоборот убирают все наплывы рядом с клапаном, чтобы уменьшить сопротивление топливо-воздушной смеси на входе в камеру сгорания. А степень сжатия поднимается либо поршнем с вытеснителем, либо уменьшением высоты цилиндра/головки (опять же до момента соприкосновения клапана и поршня).
参考になりました。素晴らしい
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
good job
Brapa biaya nya min?
Геометрия в идеал,а как рассчитывали объём камеры сгорания?ДВС собрали?гбц не оторвало?не треснула?
Какая нахер геометрия установка на токарный полная бутафория стрелка индикатора ни разу не шелохнулась
Серёга,хороший ты мужик,но с чувством юмора туго у тебя,дай бог тебе всего что ты хочешь,удачи
Lokasi mana om?btw udh ad yg udh jadi blm head mio klep sonic nya??
the people who designed the hemi had the wrong idea, this is clearly better
😂😂
kubah di apliksikan untuk motor drag untuk menaikan kompresi
Keren bang sangat bermanfaat ilmunya 👍🏻👍🏻👍🏻
Looks like he might have improved the flow all the way around.
хочу посмотреть что в итоге ....динамика мотора!!!!а так молодец
🤘🤘🤘🤘🤘🤘🤘🤘🤘🤘
ist ja sehr präzise mit einer handgeführten bohrmaschine dort material abzutragen .
Kaw2 mantap ,👍👍👍
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.
Works good, tnx
Idea not bad but need practical result . Yes compression just increased but may be overheated or knocking and difficult igniting due to low gas chamber 🤔
You do realize that you just KILLED the air flow in that head by shrouding the shit out of them valves right? What you had in pumping efficiency, you traded for compression.. It may thump and make a gang of torque off idle, but I promise you it'll run out of steam well before 3000rpm. AND you're likely going to run it with a stock cam. Which means your dynamic compression ratio will be through the roof. Not something that an air cooled engine is usually capable of cooling. but hey, cambodia, vietnam, portugal where yall got them disposable 3rd world junk honda clone engines, I guess you'll learn the hard way?
Bengkel dimna??
Ilmu bagus 👍👍👍
what did you get for
effect
Ini disebut penyetelan klasik, dengan mengubah ruang bakar. Kemudian ukuran katup, sudut katup... tetapi itu bukan hal baru.
how about a dyno before and after.
Now were is the spark?
Это увеличение степени сжатия, а не увеличение компрессии
For successful welding would you not have cleaned the carbon back to original alloy