DO NOT PAY FOR THIS! it may not have started as a scam but now it is for sure! if you check social media, you will find a lot of people who ask for help and were ignored by this guy. in a few weeks the site forgot I bought the course and even if I am loged it it won't let me watch videos, offering me instead to buy the course again. no one responds emails nor messages sent to the social media profiles. also, the course is incomplete and this guy has not uploaded anything in years. and none of the site-only videos were is 4k as promised. only the free youtube ones were. there is not even an option to download the videos, so unless you know of a hackey way to do so, don't bother giving money for this. if someone finds a way to download the videos, please upload them to the pirate bay. despite all, the videos were actually quite good.
I agree, to bad he hasn't uploaded in months I am doing my automotive service technician fundamentals course and this video I feel the way he explains it is way better than most of the channels I find when I'm looking up specific things
best quality knowledge I have ever seen on youtube...each video shares in depth knowledge about the topic which is generally not captured in reading a book. pls continue to share such quality content
I’ve watched two videos and I’m sold. You’re the guy everyone needs to learn from. This is amazing content. Didn’t miss anything at all or leave anything out.
DO NOT PAY FOR THIS! it may not have started as a scam but now it is for sure! if you check social media, you will find a lot of people who ask for help and were ignored by this guy. in a few weeks the site forgot I bought the course and even if I am loged it it won't let me watch videos, offering me instead to buy the course again. no one responds emails nor messages sent to the social media profiles. also, the course is incomplete and this guy has not uploaded anything in years. and none of the site-only videos were is 4k as promised. only the free youtube ones were. there is not even an option to download the videos, so unless you know of a hackey way to do so, don't bother giving money for this. if someone finds a way to download the videos, please upload them to the pirate bay. despite all, the videos were actually quite good.
A well done video. What's really annoying about interference engines is when they put rubber timing belts on them. Then when the break, you lose the engine because you didn't change out a $50 belt. This is why I'm glad that for the most part, a few good auto makers (Toyota, Ford and others) make non-interference engines with timing chains, or at least chains when they are interference engines.
Great video - would have been nice to show the valve seals up close unless I missed it. I just replaced 16 seals on my 2003 Suburban. What a job that was! No more burning oil though! 243k and going strong. Thanks!
DO NOT PAY FOR THIS! it may not have started as a scam but now it is for sure! if you check social media, you will find a lot of people who ask for help and were ignored by this guy. in a few weeks the site forgot I bought the course and even if I am loged it it won't let me watch videos, offering me instead to buy the course again. no one responds emails nor messages sent to the social media profiles. also, the course is incomplete and this guy has not uploaded anything in years. and none of the site-only videos were is 4k as promised. only the free youtube ones were. there is not even an option to download the videos, so unless you know of a hackey way to do so, don't bother giving money for this. if someone finds a way to download the videos, please upload them to the pirate bay. despite all, the videos were actually quite good.
Got a 2014 Chevy Silverado that blew its engine back in October, 180k miles, and finally figured out last week a valve went out in the engine and apparently parts of the valve were found in the exhaust. When it went out on me it still drove for about a mile as I could safely get off the road if I didn’t stop immediately so I had that going for me as well as we were able to find an engine to replace it with. Decided to look more into valves and this video was interesting. Hopefully how I said that makes sense, I heard what caused it from my dad who is in contact with the guy that’s replacing the engine for us so I haven’t seen any of this myself.
Very clear and high quality vid and channel. if i may say something, you forgot to mention how the spring is keeping the valve closed. (caps and retainer...)
Just stumbled upon you after googling how water cooling works. Terrific stuff mate - as an Aussie I'd much rather listen to a Brit over an American and it's thrilling to now know there's one out there to listen to!!
i am planning to be a car mechanic as i am related to completely different field, and yet i have my 5 hours watching your videos, now when i drive my car, i know how its moving
I really enjoy learning from your videos the quality is great and your teaching us great i wish you'd make more and could monetize to make money off them
The intake valve is bigger than the exhaust valve because the pressure difference at the intake region is less (also mass flow rate less) than the pressure difference at the exhaust region(also mass flow rate more). But mass flow rates must be same for intake as well as exhaust (m(in) = m(out)) hence to satisfy this, the area of intake region should be bigger than the area of exhaust region.
Very cool. I know as much about engines as a box turtle knows about The Who; learning about such an ubiquitous and important piece of machinery is quite satisfying. My curiosity is stoked primarily by interest in motor racing--when a book mentions 4-valve heads as an important aspect of engine development during the 1.5 liter F1 era, I want to know what that means. Alas, such knowledge doesn't keep me from fantasizing about racing a Lotus 33 at Spa, and degrading my own puny life experiences. Why aren't we satisfied with what we have?
Great video! I have a question regarding valve float: does the ignition process in the combustion chamber provide any force that aids the spring in closing the valve stem and keeping it in contact with the follower? I'm doing some analysis on a cam-follower and valve-stem assembly, and it seems that the force needed to keep the valve in contact with the follower is extremely high (~10,000 lbf or ~44,000 N of force) much higher than is reasonable with springs that would fit in that area. Do you or any other viewers here have ideas or input on this?
Where is the video on the head? What happened with the woodworking? Although you spoke about the valves bending you didn’t mention what happens when a timing belt snaps and bends them all. At least that’s what the mechanic told me what happened on my Ford XR3i as he took much money from me. 💸👋🏼
Did you mention how the length of the valves effect the performance of the combustion intake? Did you mention the stem height? You need to explain this for clarity because if you order some valves and they are not the same lenght but the diameter is the same then you will have a combution problem balance in the intake gases and the exhaust gas also. Explain it please.
Not quite true to say that it is easier to blow fluid than suck fluid which is the reason of that the intake valve is bigger in size than the exhaust valve.
I love the channel, guys, but there is one thing that bugs me about your explanation and most of the explanations I've seen regarding why intake valves are larger than exhaust valves. Fundamentally, 'sucking' and 'blowing' are both cases of a differential in pressure. Pressure naturally tries to equalise, and the bigger the difference, the greater the force exerted on those gases. If you imagine two jars connected by a hose and a valve, and add 10psi of air pressure to one of them. Open the valve, some air flows through the hose, and the pressure becomes equal. This is the same case regardless of which jar you add the air to first, and regardless of the absolute pressure. It's only the differential or gradient of pressure that creates flow, and the concept of sucking being a different phenomenon to blowing is a falsehood unless you are talking about something like a leafblower where a flow of gas exists in open space. There are three simple reasons, as I see it, for exhaust valves being smaller than intake valves: 1: The valve gets hot. Smaller surface area, less heat absorbed from the exhaust gases. 2: The limitation of atmospheric pressure. No matter how you configure an engine, unless it is boosted with a super or turbocharger, the greatest difference in pressure that can be created by a piston moving downwards and creating a partial vaccum is 1 bar or one atmosphere of pressure. When the same piston moves upward on its exhaust stroke, that pressure differential can become much greater than one atmosphere, thus, higher flow rate, allowing a smaller valve to be adequate. 3: Most importantly, the exhaust gases are HOT. They have just undergone combustion. The pressure is already significantly higher than atmospheric, so even if the piston didn't move upwards, the pressure of the hot gases would cause them to flow out the exhaust valve. In summary, hot exhaust gases being squashed by a piston are able to reach pressures much higher than 1 bar. Hence, a smaller valve is adequate and thermally desirable.
Why not make the valve the same material? Wouldnt that be better to have heat transferred along the stem as well as the head? instead of just having it all in one point. Sorry if i sound stupid, iv just started in automotive engineering, and just curious.
As others have said, the quality of education and delivery in this video is just unrivaled. You are an excellent teacher and I've learned a lot!
DO NOT PAY FOR THIS! it may not have started as a scam but now it is for sure! if you check social media, you will find a lot of people who ask for help and were ignored by this guy.
in a few weeks the site forgot I bought the course and even if I am loged it it won't let me watch videos, offering me instead to buy the course again. no one responds emails nor messages sent to the social media profiles. also, the course is incomplete and this guy has not uploaded anything in years. and none of the site-only videos were is 4k as promised. only the free youtube ones were. there is not even an option to download the videos, so unless you know of a hackey way to do so, don't bother giving money for this.
if someone finds a way to download the videos, please upload them to the pirate bay. despite all, the videos were actually quite good.
Unbeatable quality and thoughtfulness.
Why not have one large pair of valves per cylinder instead of multiple pair of valves
@@abdulmoen because of the geometry.. four holes side by side gives more diameter area then two big ones in a given space.
Yeah
No nonsense.
No more bullshit talk no intro music no head ace music nothing simple and lovely way to teach us 😉
Simply put,
No Nonsense...
I agree, to bad he hasn't uploaded in months I am doing my automotive service technician fundamentals course and this video I feel the way he explains it is way better than most of the channels I find when I'm looking up specific things
I'm just wondering why this channel do not make videos anymore.
After 6 years of posting this video, thank you🎉
High quality video! Straight forward, easy to understand and no background music.
I must say my new friend you have the best channel for learning about the mechanics of automobiles. Thank you!!
This channel is worth many more views and subs
best quality knowledge I have ever seen on youtube...each video shares in depth knowledge about the topic which is generally not captured in reading a book. pls continue to share such quality content
I’ve watched two videos and I’m sold. You’re the guy everyone needs to learn from. This is amazing content. Didn’t miss anything at all or leave anything out.
Omg thank you. I now understand why people say interference motors can get damaged when the timing components break. Very helpful.
I sell car parts for a living and yet I still occasionally learn a thing or two from your videos. Fantastic work
Interference engine and more....
So much shared knowledge beyond just engine valves.
Thanks for the video.
One of the best videos about cars .. thank u
I've never heard such a clear explanation of an interference engine. I've heard a few people half explain it.
DO NOT PAY FOR THIS! it may not have started as a scam but now it is for sure! if you check social media, you will find a lot of people who ask for help and were ignored by this guy.
in a few weeks the site forgot I bought the course and even if I am loged it it won't let me watch videos, offering me instead to buy the course again. no one responds emails nor messages sent to the social media profiles. also, the course is incomplete and this guy has not uploaded anything in years. and none of the site-only videos were is 4k as promised. only the free youtube ones were. there is not even an option to download the videos, so unless you know of a hackey way to do so, don't bother giving money for this.
if someone finds a way to download the videos, please upload them to the pirate bay. despite all, the videos were actually quite good.
Interference engine.
The guy knows his stuff. The best I’ve seen so far
Passion is visible by your teaching sense and knowledge
A well done video. What's really annoying about interference engines is when they put rubber timing belts on them. Then when the break, you lose the engine because you didn't change out a $50 belt. This is why I'm glad that for the most part, a few good auto makers (Toyota, Ford and others) make non-interference engines with timing chains, or at least chains when they are interference engines.
so informative and in complete detail about valve. thanks man
Bought your full course, cant wait to learn everything about my car!
Where can I get the full course
Totally worth it
I bought it but I can’t watch the videos
Great video - would have been nice to show the valve seals up close unless I missed it. I just replaced 16 seals on my 2003 Suburban. What a job that was! No more burning oil though! 243k and going strong. Thanks!
DO NOT PAY FOR THIS! it may not have started as a scam but now it is for sure! if you check social media, you will find a lot of people who ask for help and were ignored by this guy.
in a few weeks the site forgot I bought the course and even if I am loged it it won't let me watch videos, offering me instead to buy the course again. no one responds emails nor messages sent to the social media profiles. also, the course is incomplete and this guy has not uploaded anything in years. and none of the site-only videos were is 4k as promised. only the free youtube ones were. there is not even an option to download the videos, so unless you know of a hackey way to do so, don't bother giving money for this.
if someone finds a way to download the videos, please upload them to the pirate bay. despite all, the videos were actually quite good.
Лучший технический канал по теме ДВС! Без воды и ошибок в терминологии а так же четкий материал!
From finding your channel 30 mins ago to buying your course, thanks Alex. Just what I was looking for!
How to buy? Is it removed?
Thank you for showing how the valves fit in, I want to make a 4 stroke engine and I had some doubts to how to deal with the valves
This channel deserves more subs and views than it already has
This is the best youtube channel for car knowledge ! By far !
Your explanation style is far better than animated explanation.
Excellent video mate clear & precise explanations as to how the valves work in a cylinder head!!
This mans videos are truly amazing
This is gold. So informative👌🏼 top notch quality
Thank you for educating with lot depth visual clarity, just like valve guide how a valve fits in it
Got a 2014 Chevy Silverado that blew its engine back in October, 180k miles, and finally figured out last week a valve went out in the engine and apparently parts of the valve were found in the exhaust. When it went out on me it still drove for about a mile as I could safely get off the road if I didn’t stop immediately so I had that going for me as well as we were able to find an engine to replace it with. Decided to look more into valves and this video was interesting.
Hopefully how I said that makes sense, I heard what caused it from my dad who is in contact with the guy that’s replacing the engine for us so I haven’t seen any of this myself.
Very clear and high quality vid and channel.
if i may say something, you forgot to mention how the spring is keeping the valve closed. (caps and retainer...)
Very high quality content, appreciate the effort behind this work. Thanks a lot man !
Just stumbled upon you after googling how water cooling works. Terrific stuff mate - as an Aussie I'd much rather listen to a Brit over an American and it's thrilling to now know there's one out there to listen to!!
this is too good to be free on youtube!!! THANK YOU!!!
I’m learning so much from this guy. I’m going start saving to pay for the full course. I Will definitely get my money’s worth
The answer to my question came at 11:20. This channel is gold.
This is ridiculously high quality.
Yet another outstanding presentation.
THANK YOU!🙏
PLEASE... camshaft and cylinder head installation!
i am planning to be a car mechanic as i am related to completely different field,
and yet i have my 5 hours watching your videos,
now when i drive my car, i know how its moving
This dude alone makes youtube meaningful
Awesome videos! Production level is superb, informative and stunning! Thank you
U r probably the best mechanic I know currently
Not mechanic . He is an engineer
No ads?? For real?? This is the most worth watching channel
Please continue the series it's very helpful.😀
this is exactly the channel i was looking for...subbed
unbeatable videos and channel to compare all youtube videos about car really i appreciate your work
Your gazing upon a genius when tuned into this channel.
brothr u are graat teacher may god bless you plz keep up the good work
Excellent video, very informative and helpful
The explanation is very clear.
You are a good teacher. Thank you!
The dragging on the machined surface!!! Good video tho, learned somethings !
Love it bro....please make more videos...on these parts....
Delivery par excellon! Knowledge priceless!!!
Wow! Just a GREAT presentation!
These videos are really good. Information very accurate. However if you had an animator to animate your descriptions then this would be flawless.
Wow! It’s amazing, I always wanted to know how there stuff works, and here I’m. Thanks, you doing exceptionally well...
I really enjoy learning from your videos the quality is great and your teaching us great i wish you'd make more and could monetize to make money off them
Exceptional Teaching skill..can u make whole engle assembly video for training purpose? Please sir make it..
Great video again, thank you
As said already. Brilliant, all round.
Dopamine to my soul , gr8 video Sir. Subbed
The intake valve is bigger than the exhaust valve because the pressure difference at the intake region is less (also mass flow rate less) than the pressure difference at the exhaust region(also mass flow rate more). But mass flow rates must be same for intake as well as exhaust (m(in) = m(out)) hence to satisfy this, the area of intake region should be bigger than the area of exhaust region.
Thank you so much for this content🙏
Wanted to see what a valve seat and valve seal and valve guide looks like. Damn you to an otherwise good explanations.
Very cool. I know as much about engines as a box turtle knows about The Who; learning about such an ubiquitous and important piece of machinery is quite satisfying. My curiosity is stoked primarily by interest in motor racing--when a book mentions 4-valve heads as an important aspect of engine development during the 1.5 liter F1 era, I want to know what that means. Alas, such knowledge doesn't keep me from fantasizing about racing a Lotus 33 at Spa, and degrading my own puny life experiences. Why aren't we satisfied with what we have?
5:55 i think it's because exaust's gas has a greater pressure after the power stroke, so it can pass trought quickly.
No fluff, cheers mate.
10:50 The Hemi guys just went all giddy
In most engines the intake valve is also cooled by the air/fuel mixture.
Air yes, fuel no. Most engines have direct injection.
Wow, ur a natural educator
Well explained bro, keep up the good work 👏
Dragging that head, face down across the table @ 2:51 made my brain fucking scream
Your doing premium content, thanks for that!
Excellent teaching video . . . Thanks . Stay Frosty All
Amazed me by explanation .
Can you do a video on timing belts and serpentine belts?
Thanks for the video my dude!
The head is usually made of stainless steel and body a chromium alloy steel, induction hardened on the tip.
Thank you for the helpful informations 👍🏻
Brilliant guys. Liked!
Nice video men in depth skills
Great video! I have a question regarding valve float: does the ignition process in the combustion chamber provide any force that aids the spring in closing the valve stem and keeping it in contact with the follower? I'm doing some analysis on a cam-follower and valve-stem assembly, and it seems that the force needed to keep the valve in contact with the follower is extremely high (~10,000 lbf or ~44,000 N of force) much higher than is reasonable with springs that would fit in that area. Do you or any other viewers here have ideas or input on this?
Can you make a series of videos about turbo engines & what is good & bad about it ?
Please Sir ! Make 1 video on ... ENGINE and VALVES ARRANGEMENTS
Thank you for this video this is so useful
Thank you !! another great video .....
Where would one find the video about the cylinder head?
the "grinding" the valves is also known as "lapping" the valves right? just to make sure I know exactly what you were talking about.
Where is the video on the head? What happened with the woodworking?
Although you spoke about the valves bending you didn’t mention what happens when a timing belt snaps and bends them all. At least that’s what the mechanic told me what happened on my Ford XR3i as he took much money from me. 💸👋🏼
good information. wish i could absorb it all.
Did you mention how the length of the valves effect the performance of the combustion intake? Did you mention the stem height? You need to explain this for clarity because if you order some valves and they are not the same lenght but the diameter is the same then you will have a combution problem balance in the intake gases and the exhaust gas also. Explain it please.
You problem?
9:48 Won't the springs return back their potential energy as they slide against the other side of the cam, pushing it along?
Good Evening How a car works
Thanks 👍
From Nick Ayivor from London England UK 🇬🇧
Great video thanks for the info 👍
Not quite true to say that it is easier to blow fluid than suck fluid which is the reason of that the intake valve is bigger in size than the exhaust valve.
I love the channel, guys, but there is one thing that bugs me about your explanation and most of the explanations I've seen regarding why intake valves are larger than exhaust valves.
Fundamentally, 'sucking' and 'blowing' are both cases of a differential in pressure. Pressure naturally tries to equalise, and the bigger the difference, the greater the force exerted on those gases. If you imagine two jars connected by a hose and a valve, and add 10psi of air pressure to one of them. Open the valve, some air flows through the hose, and the pressure becomes equal. This is the same case regardless of which jar you add the air to first, and regardless of the absolute pressure. It's only the differential or gradient of pressure that creates flow, and the concept of sucking being a different phenomenon to blowing is a falsehood unless you are talking about something like a leafblower where a flow of gas exists in open space.
There are three simple reasons, as I see it, for exhaust valves being smaller than intake valves:
1: The valve gets hot. Smaller surface area, less heat absorbed from the exhaust gases.
2: The limitation of atmospheric pressure. No matter how you configure an engine, unless it is boosted with a super or turbocharger, the greatest difference in pressure that can be created by a piston moving downwards and creating a partial vaccum is 1 bar or one atmosphere of pressure. When the same piston moves upward on its exhaust stroke, that pressure differential can become much greater than one atmosphere, thus, higher flow rate, allowing a smaller valve to be adequate.
3: Most importantly, the exhaust gases are HOT. They have just undergone combustion. The pressure is already significantly higher than atmospheric, so even if the piston didn't move upwards, the pressure of the hot gases would cause them to flow out the exhaust valve.
In summary, hot exhaust gases being squashed by a piston are able to reach pressures much higher than 1 bar. Hence, a smaller valve is adequate and thermally desirable.
Why not make the valve the same material?
Wouldnt that be better to have heat transferred along the stem as well as the head? instead of just having it all in one point.
Sorry if i sound stupid, iv just started in automotive engineering, and just curious.