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
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.
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.
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.
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
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.
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.
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.
Bro you told in interference engine same space is used by value and piston right..! But how does exhaust takes place, because in exhaust when exhaust valve come down, the piston moves up to push gas out from the chamber through the exhaust value. So won't they collide then..?
How bent does a valve need to be to cause no compression? I have a cylinder head that has compression issues but the valves look oddly straight which I wasnt expecting.
Is there a way to examine/inspect the valves without tearing the engine away? I mean by inspecting its performance or some ex-ray etc? Ultimately, how do you know that you have a faulty valve? (Bent or one with its head burnt/destroyed?)
It will be a mixture for a car with a carburetor. Some modern cars have fuel injection. In this case only air enters the intake, not a mixture, and instead the fuel is sprayed directly into the cylinder.
All four stroke engines are multi-valve, "multi-valve" doesn't mean anything Love your vids... just saying 'multi-valve' is a super ambiguous label, +1 on the valve layout vid also a valve types would be cool too
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.
This channel is worth many more views and subs
High quality video! Straight forward, easy to understand and no background music.
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 must say my new friend you have the best channel for learning about the mechanics of automobiles. Thank you!!
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.
One of the best videos about cars .. thank u
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?
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
Omg thank you. I now understand why people say interference motors can get damaged when the timing components break. Very helpful.
This is the best youtube channel for car knowledge ! By far !
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.
This is gold. So informative👌🏼 top notch quality
Passion is visible by your teaching sense and knowledge
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.
so informative and in complete detail about valve. thanks man
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
Excellent video mate clear & precise explanations as to how the valves work in a cylinder head!!
This mans videos are truly amazing
Your explanation style is far better than animated explanation.
Very high quality content, appreciate the effort behind this work. Thanks a lot man !
this is too good to be free on youtube!!! THANK YOU!!!
this is exactly the channel i was looking for...subbed
Thank you for educating with lot depth visual clarity, just like valve guide how a valve fits in it
No ads?? For real?? This is the most worth watching channel
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
This dude alone makes youtube meaningful
These videos are really good. Information very accurate. However if you had an animator to animate your descriptions then this would be flawless.
Please continue the series it's very helpful.😀
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
Love it bro....please make more videos...on these parts....
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.
Excellent video, very informative and helpful
Dopamine to my soul , gr8 video Sir. Subbed
brothr u are graat teacher may god bless you plz keep up the good work
The dragging on the machined surface!!! Good video tho, learned somethings !
The explanation is very clear.
Delivery par excellon! Knowledge priceless!!!
Dragging that head, face down across the table @ 2:51 made my brain fucking scream
10:50 The Hemi guys just went all giddy
Wow! It’s amazing, I always wanted to know how there stuff works, and here I’m. Thanks, you doing exceptionally well...
Thank you so much for this content🙏
No fluff, cheers mate.
good information. wish i could absorb it all.
Your doing premium content, thanks for that!
Nice video men in depth skills
Well explained bro, keep up the good work 👏
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.
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
Where would one find the video about the cylinder head?
Brilliant guys. Liked!
Good explanation
Thank you !! another great video .....
Can you do a video on timing belts and serpentine belts?
Thank you for this video this is so useful
Please Sir ! Make 1 video on ... ENGINE and VALVES ARRANGEMENTS
Can you explain about tappet clearance???
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.
You problem?
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.
Can you make a series of videos about turbo engines & what is good & bad about it ?
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.
Great video thanks for the info 👍
Good Evening How a car works
Thanks 👍
From Nick Ayivor from London England UK 🇬🇧
Bro you told in interference engine same space is used by value and piston right..! But how does exhaust takes place, because in exhaust when exhaust valve come down, the piston moves up to push gas out from the chamber through the exhaust value. So won't they collide then..?
The exhaust valve starts closing as the piston goes up.
Awesome video!
How bent does a valve need to be to cause no compression? I have a cylinder head that has compression issues but the valves look oddly straight which I wasnt expecting.
A bent valve won't seat properly which means it won't seal allowing combustion to escape through the gap
@@BENNO117 it turned out to be the hydraulic lifters not letting the valves shut properly valves were ok 👍🏻
Very good chanell
2:07 this woodworking lead to nothing!? Lol
Lol... yeah, I was wondering the same thing.
LOL
I said to myself... That's not wood lol
When you replace the valve do you have to brake it in slowly or can you just run it like normal??
Is there a way to examine/inspect the valves without tearing the engine away? I mean by inspecting its performance or some ex-ray etc? Ultimately, how do you know that you have a faulty valve? (Bent or one with its head burnt/destroyed?)
A compression test is a good way, or a vacuum test
EXCELLENT!!!
Thank you
where is situated in engine valve ??
Man! How brief you can be!😍 thanks in millions, but i have a question
If the valve fails why Engine blasts?
You started this saying there was already a section on the head??? I can't find it.
ua-cam.com/video/-EUPaXWjaeg/v-deo.html
Seems like ppl don't care about their valves.
How do i know whether my engine interference or not?
Pretty sure you just have to look up the model; afaik there's no indicator on the engine itself.
Thought intake valves are smaller;
U R Awesome Thanks
where is the next video of you putting the valves back on the head and head in the block
Good bless u bro
Where are you from
Kindly post more videos
The minimum amount of valves is zero. As long as you have ports ;-)
In a 4 stroke engine.
Thanks a lottttt
Biigg thumbs up.
information transfer succesful
nice
Love from india
Gas....Do you mean air or fuel in this context??
It will be a mixture for a car with a carburetor. Some modern cars have fuel injection. In this case only air enters the intake, not a mixture, and instead the fuel is sprayed directly into the cylinder.
This guy acts like someone sent by god to make people understand car mechanism..
this is how exactly I want to teach world politics to people.
Great vid but he never used the DIY for anything
Guy in the vid
So lets talk about valv-
Me:intro guy turns around
Pent roof 4 valve not 'multi-valve'
Pent-roof 4 valve IS a multivalve setup. But I should probably have made another video about valve layouts.
All four stroke engines are multi-valve, "multi-valve" doesn't mean anything
Love your vids... just saying 'multi-valve' is a super ambiguous label, +1 on the valve layout vid also a valve types would be cool too
Desmodromic engines. No energy waster pushing on springs
Energy wasting pushing the valves with the cam though
@@BENNO117 Moving those cams aint as hard as pushing on those springs
I brought the course and I can’t watch the videos.
Too bad the app doesn't work :\