Purchase tools used in this video to dissect your own car parts: Angle Grinder (aka snap ring pliers): amzn.to/3nyCsVp (US) amzn.to/3hyoQFR (Canada) 3/8" Ratchet set: amzn.to/3hA7LLD (US) amzn.to/3zgHE2d (Canada) Screwdriver set: amzn.to/3tGeU1S (US) amzn.to/3hy4Z9G (Canada)
Please calculate the lowest frequency that can be reflected back and forth between the partitions. And then think about how high (or better how low) the frequencies are that have to be damped away in the rear silencer. Then you will see that the explanation in the video cannot work at all.
dude i love these videos so much i was just watching engineering explained's video on mufflers and then i was like "i wanna see the actual thing cut open i bet speedkar has done that" and you had and its beautiful
Spend 5 minutes explaining the complexities of sound waves bouncing inside the chamber and how it's important to keep them pressurized, then suggests to drill a few holes to drain the water, lol
+VanillaSnake21 Yep Its one or the other With OEM mufflers though I don't think you need to drill a hole, the material is much better quality than aftermarket
But I don't understand the point of the suggestion, you're saying compromise the muffler and make it less effective in reducing noise as well as create a exhaust leak for what? Just to make sure the muffler doesn't rust? But at that point it's a garbage muffler anyway.
No you don't understand. A trade off for what? A trade off to keep the muffler longer? But what's the difference between a rust making a hole in the muffler or you? When you make holes in it you might as well throw it out anyways.
An 1/8 hole in the muffler aint gonna do shit to the noise you bellend but it will drain all the collected condensation out. Many exhausts have them as standard so give up trying to be a smartass.
It is quite clear to me from this video that if you want a muffler that lasts a long time, use a toothbrush. Once I saw that, I knew this guy was legit. I'm subscribing!
Nice explanation , I've heard from my mechanic that if u start a car's engine don't shut it down straight away as the water vapour will condensate in the cold muffler and resonator , let it run for few minutes until the pipes become hot then water won't condensate and this will prevent it from rusting
Rust needs oxygen to form. The point of car engine is to consume the oxygen from air to burn fuel and emit exhaust gases that don't contain oxygen anymore. So how could the rust form when there is no oxygen?
Good job. Got the ideas across. Not unnecessarily technical. Actually looking at a real muffler was better than a chalkboard diagram. I didn't notice the toothbrush.
speedkar99 in order for a mechanic to diagnose and replace, wouldn't he or she know how it should work first??? Unless you're someone who reads 710 where the oil goes in. Lol
Very clear, informative and concise....and I like the 'used-toothbrush pointer' too. Where can I get one? I bet it's 'branded'🤣🤣🤣. Indeed a garage classroom! Have since subscribed for the 'classes'. 🫡👍🙌
But if you drew holes on the bottom will make the waves also go through them and will make a strange noise with the water.Also the temperature in muffler should be over 100 C degrees so the water will drain only if you stop the engine,am I right ?
speedkar99 Once the bottom are drilled with holes, will it cause back pressure drop, noise coming out and other impact? How many holes and how is the size are we talking here? Thanks in advance for the advise.
+dalphinus I think he's talking about pretty small holes...like 1/16" 0r 3/32" which won't make any difference soundwise. Most factory mufflers have small drain holes in them brand new.
Hey drilling holes as you advice at the end to prevent rust and water accumulation wouldn't that equal to more noise ? as sound will exit through those holes instead of the chambers
Reviewing this video again it would be really cool if you could fit like a Mitsubishi 3000GT muffler that has a little arm sticking out so you can force the little flap open with a Sport Button.
My wife worked with a woman who got so angry with her ex-boyfriend that she entered his apartment with the keys she still had and stuffed his toothbrush up her you-know-what. Then she urinated into the fabric softener. Oh, she got arrested. BTW, she's hot.
180%? I think he meant 180 degrees. (2:55) But still nice video. The sound without the muffles was so cool, I didn't know all i had to do is saw the muffler off. :D
Thanks a lot sir! Making a homemade muffler/baffle system on a motorbike. I've done this before but I keep forgetting the basics! Lessons that I keep learning again and again! Hey! Just like that song lyric from Two Kevins by the band Cigar. Anyway, thanks again! Peace.
Cool. Thanks. 3 inch exhaust systems common? I've got a stove I made from scrap metal and was thinking of using old exhaust pipe and maybe even muffler in it if I could find it. i've seen some different stove systems that have a similar concept as the muffler with baffles and such.
4:53 I used your suggestion and drilled holes in the bottom of my muffler now it sounds like my car makes these wheezy fart noises when it's at idle and when I rev the engine it sounds like a kazoo. How many holes was I supposed to drill?
Nice video explaining everything clearly. I have a question for you though. The silencer pipe in my 2005 Camry center exhaust section has something that's broken off which causes a rattling sound when the engine is idling rough or when I shake the end muffler. The affected section is the bulging part in the silencer pipe after the cat converter but before the end muffler. The car drives fine for now and there is no check engine light. Should I 1. replace it or, 2. cut it open and try to weld it back/cut the broken section off or, 3. just ignore it altogether? I'm appreciative of your opinion. Thanks.
Some of the terminology and explanation was a bit too crude but being an Acoustic Engineer who designs these reactive mufflers for mining dump trucks and a whole lot, I enjoyed youor video. However, I must add that the explanation at 2:19 is wrong. That connecting neck is not for exhaust gases to bypass the last chamber (however that inadvertently will happen), that is what is called a "Helmholtz Resonator". The volume of the second chamber and geometry of the connecting neck (among a lot of other factors) decides what is the resonant frequency of that 2nd chamber. The sound frequencies at and near the resonant frequency get attenuated due to helmholtz effect.
Purchase tools used in this video to dissect your own car parts:
Angle Grinder (aka snap ring pliers):
amzn.to/3nyCsVp (US)
amzn.to/3hyoQFR (Canada)
3/8" Ratchet set:
amzn.to/3hA7LLD (US)
amzn.to/3zgHE2d (Canada)
Screwdriver set:
amzn.to/3tGeU1S (US)
amzn.to/3hy4Z9G (Canada)
Where’s the link for the toothbrush?
we need india
@@74nova36 Which one, orange or purple?
I can't decide. Maybe they come as a multi pack, that would save me having to choose..
Why are you posting this? Do they give you money if someone buys through the link?
The sound waves are 180 DEGREES out of phase, not 180 'percent'. It's not the same thing.
I love the way you throughly explained the muffler's function, but that toothbrush pointer just worked like a charm.
+rockerojuan thanks for the kind feedback
love the toothbrush pointer!
Mr. Toothbrush reminds you to brush your teeth three times a day.
David Bovee Dude, my exact thoughts
I was thinking the same thing...lol
pointer of a perfect teacher kkkkkkkkkkk...
Toothbrush pointer is the best
I understood everything thanks to the toothbrush.
+Tony32 haha toothbrush superhero
That's the toothbrush of clear instruction. No educational video is complete without it.
Perhaps this video is sponsored by Oral B... Maybe?
LOL! That's great!
Much better than 'talking hands'...
Surprising amount of engineering in what appears to be a simple component. This channel was a great find. Keep it up.
+Dylan Lewis Agreed, I didn't know myself there was so much to a muffler, especially the reverse flow design.
Very interesting, and informative work, speedkar 99.
It's a Toyota
I am a school physics teacher I will show this when I teach interference.Great job. Thanks
+Physics_rabbi Thanks I'm glad my video could help your class.
For best results, use a toothbrush to point
Firearm suppression is another relevant Application and easier to test variables on.
Please calculate the lowest frequency that can be reflected back and forth between the partitions. And then think about how high (or better how low) the frequencies are that have to be damped away in the rear silencer. Then you will see that the explanation in the video cannot work at all.
@@udarasamarasinghe8811 😂😂😂
Can't believe such a lowly Corolla muffler has got so much engineering inside of it. Thank you very much sir!
+Dominic Fong I agree! I would have thought it was more simple
Loved the sound of the muffler delete but was sad this video was so short. Love the lay man's explanation in a short video!
I love how you explain the sound wave with that tooth brush
+augy 183 Oh Yea... the toothbrush is the instructor now!
Huh that sounded a lot nicer without the muffler.
I agree. I didn't expect a Corolla to sound this good. You should hear it now that I chopped the catalytic converter off!
speedkar99 According to AP, you will have the whole car into its constituent parts with 10 more videos.
Make me wanna cut off my muffler right now.
Mufflers stop the good sound but I think it’s illegal
Yeah, might grate a bit after a while though...
I am impressed with your physics explanations!
Thanks, glad you found it helpful.
dude i love these videos so much i was just watching engineering explained's video on mufflers and then i was like "i wanna see the actual thing cut open i bet speedkar has done that" and you had and its beautiful
Spend 5 minutes explaining the complexities of sound waves bouncing inside the chamber and how it's important to keep them pressurized, then suggests to drill a few holes to drain the water, lol
+VanillaSnake21 Yep
Its one or the other
With OEM mufflers though I don't think you need to drill a hole, the material is much better quality than aftermarket
But I don't understand the point of the suggestion, you're saying compromise the muffler and make it less effective in reducing noise as well as create a exhaust leak for what? Just to make sure the muffler doesn't rust? But at that point it's a garbage muffler anyway.
+VanillaSnake21 yea true. Its a trade off.
No you don't understand. A trade off for what? A trade off to keep the muffler longer? But what's the difference between a rust making a hole in the muffler or you? When you make holes in it you might as well throw it out anyways.
An 1/8 hole in the muffler aint gonna do shit to the noise you bellend but it will drain all the collected condensation out. Many exhausts have them as standard so give up trying to be a smartass.
What an informative video! Clear well shot, very well described - and no fluff. Keep them coming boss
Thank you very much, clear and to the point is how it should be!
Did not know there was that much engineering that went into a mufflers’ sound-cancelling calculations. Super cool. 🇨🇦👍🏼
When they do these kinds of calculations, they're targeting one specific RPM, and probably 2nd order harmonics.
It's just baffling !
It is!
+Jim Jimm It doesn't resonate with you?
Further replies have been muffled ;) .
You've exhausted all the puns. . . . .
Pun-ishment is in order ;) .
It's 3 am in the morning, and I am watching this. Help me
+A B but why ?
Lmaaooo
That's pretty cool bro...
No it’s 3 am in the evening
It is quite clear to me from this video that if you want a muffler that lasts a long time, use a toothbrush. Once I saw that, I knew this guy was legit. I'm subscribing!
Haha
The toothbrush doubles the muffler life.
Great video. Hats off to the guy who volunteered his toothbrush for the pointer
First rate video.
Clearly explained.
A lot of information.
Camera showed everything that needed to be seen.
Thank you.
+Roark Gill glad you enjoyed it. Thanks
Excellent video, never imagined all those chambers inside a muffler. Thanks.
I was quite intrigued as well
Quick concise and to the point. excellent editing job. thank you for not wasting my time
Glad you appreciate my work
Nice explanation , I've heard from my mechanic that if u start a car's engine don't shut it down straight away as the water vapour will condensate in the cold muffler and resonator , let it run for few minutes until the pipes become hot then water won't condensate and this will prevent it from rusting
Rust needs oxygen to form. The point of car engine is to consume the oxygen from air to burn fuel and emit exhaust gases that don't contain oxygen anymore. So how could the rust form when there is no oxygen?
@@charlieangkor8649 do you leave your engine running 24 hours a day 365 days a year? if not, there is oxygen and water in your exhaust system
@@charlieangkor8649 Yeah, how could an exhaust pipe get rust on it? Obviously, exhaust pipes never get rust on them.
Toyota are so proud of the equipment they make that they put their name on stuff no one will ever see...Boss move!
* good vid 👍
That's because there's competition in the aftermarket so they want to stamp their name on it.
If you drill holes in the muffler, you obstruct some of the design pressure for the muffler to work properly.
Don't drill holes in mufflers.
Agreed.
Drill holes in the muffler and put maybe screws or rivets of some sort if you so dare to..
@@TheRyadrian ...Yeah....microwave the ice cream then freeze it !
"So how move a tree that is in the perfect spot and growing very luscious, first dig it out, then put in back in"
Toothbrush made me subscribe
+Alex McCoy Hah another vote for the toothbrush!
"Drill holes in the bottom?" Wouldn't that make it much louder?
It was a joke
@@speedkar99 Man, I'm getting old
usually, in this kind of videos I'm not expecting much physics and formulas! excellent job
+Masoud Rad thanks, your right a splash of theory is always good
The toothbrush is the best part! Thank you!
+Daniel Climent haha why the toothbrush?
i love it how he used the toothbrush as a pointer😂
Good job. Got the ideas across. Not unnecessarily technical. Actually looking at a real muffler was better than a chalkboard diagram. I didn't notice the toothbrush.
Glad you found it helpful
Very good video, the creator went through all the trouble to help us explore the inside of a muffler. Thumbs up both here and by clicking!
Thanks
Toothbrush.
Brother's underwear
Is that toothbrush talking?
+tommy d u b b s yes
The host of this show
What’s his name ?
Watching these videos could make me a qualified mechanic 👍
+Nick Makaia hmm
Mechanics don't chop stuff open or know how it works, they know how to diagnose and replace.
speedkar99 in order for a mechanic to diagnose and replace, wouldn't he or she know how it should work first??? Unless you're someone who reads 710 where the oil goes in. Lol
Very clear, informative and concise....and I like the 'used-toothbrush pointer' too. Where can I get one? I bet it's 'branded'🤣🤣🤣. Indeed a garage classroom! Have since subscribed for the 'classes'. 🫡👍🙌
Excellent video, this was something I've wondered about for a while, thank you for the efforts you've put into this video!
+Fadi Dan I'm glad you learned something
Excellent video as always from you. Great work uploaded.
+LearningZone thanks!
This was more informative than I thought it’d be
Glad you learned how mufflers work
nice pointer bro..reminded me to brush my muffler before bed!😂
+Luis Gordillo gotta keep it clean!
I understood it all..... The toothbrush was a great teacher.....
Glad it helped
Thanks to Your Toothbrush I clearly Understand everything,, keep it up
I'm glad my brothers contribution was recognized
@@speedkar99 at least you didn't scrub the toilet with it. 🤤
I like how he is using an old toothbrush to point at these complex equations
I like the teach-brush too
But if you drew holes on the bottom will make the waves also go through them and will make a strange noise with the water.Also the temperature in muffler should be over 100 C degrees so the water will drain only if you stop the engine,am I right ?
was thinking samething
Good point. And yes the idea would be to drain the water at standstill so it doesn't sit inside the muffler overnight.
speedkar99 Once the bottom are drilled with holes, will it cause back pressure drop, noise coming out and other impact?
How many holes and how is the size are we talking here?
Thanks in advance for the advise.
+dalphinus
I think he's talking about pretty small holes...like 1/16" 0r 3/32" which won't make any difference soundwise. Most factory mufflers have small drain holes in them brand new.
I don't know why, but the toothbrush helped me understand even better
Haha it sure helps
This was very informative! Thanks for being so thorough!
Awesome thanks
You can also drill a hole in the fuel tank and it will last longer.
+Dell Griffith but you'll get bad fuel economy
speedkar99 And maybe an explosion some time
speedkar99 just drill a small hole and plug it up when u park it 👍 better Fuell economy 😉
Excellent clip just like the independent fog lights on the solara.
+Adam J Thanks! Have you tried the independent fog light mod?
speedkar99 yes on the 99 solara I did because of your awesome clip I crashed it miss my white 99 sle
professor Toothbrush
...reminding you to brush your teeth! :)
Haha...
Hey drilling holes as you advice at the end to prevent rust and water accumulation wouldn't that equal to more noise ? as sound will exit through those holes instead of the chambers
Thats the cleanest Iv'e seen your brothers toothbrush since I began watching your channel.
Toothbrush pointer makes clear explanation.i learned a lot
The toothbrush was a great pointer
Glad you liked it
I loved how you seemlessly transitioned from using the toothbrush in explaining the body of the muffler to using it to explain the science.
It's my sidekick
I recently learnt about waves and this video was very helpful
+Menuka Ramanayake That is I'm glad it helped you put the theory into perspective.
I'm straight piping my Crown Vic for sure!
+The Ceiling Fan that would sound so cool with the v8
Reviewing this video again it would be really cool if you could fit like a Mitsubishi 3000GT muffler that has a little arm sticking out so you can force the little flap open with a Sport Button.
+John that's cool!
I'm going over this accoustics stuff in my speech and hearing science class. Thanks for the detailed analysis.
The difference between 0:06 and 0:53 is incredible!
Thanks
Vocally I am reminded of Ross from Friends. When the toothbrush is used to explain the graph I see a muppet. Good video none the less!
Thanks haha
i hope you dont brush with that
+Keagen Kufner its my brothers toothbrush and he sure does brush with it
speedkar99 hahaha
My wife worked with a woman who got so angry with her ex-boyfriend that she entered his apartment with the keys she still had and stuffed his toothbrush up her you-know-what. Then she urinated into the fabric softener. Oh, she got arrested. BTW, she's hot.
0:53 Race Car Moment...
+Lean Clorox Yes gotta love VVT-i
Best channel..u r as good as Chris fix channel
+TheRouteShow thanks. Why do you say that about him?
180%? I think he meant 180 degrees. (2:55) But still nice video. The sound without the muffles was so cool, I didn't know all i had to do is saw the muffler off. :D
+antipoti thanks for the correction, your right.
Awesome video. I did not like that harsh beep at the end. But other than that, very educational and cool.
Thanks for the feedback
I think the drilling of holes in the bottom might destroy all of that carefully engineered noise cancelling!
Yeah it's a joke lol
Interesting piece of calculated engineering. Can you imagine some people prefer their car with louder noises just to make them looks cool?
My brother is one of them
Great explaining!!! Love the brush pointer 🤣
Me too 🤣
That toothbrush got my vote for president
+Juan Martinez democracy wins!
Good video. I appreciate that you explain the physics of it. How about explaining a resonator as well?
+Tripp M Thanks. I thought about cutting that but it isn't worth an entire video.
It's a very similar device. If I remember correctly, it's tuned to cancel 180° out of phase with common cruising RPM.
THAT'S WHY I LIKE THE COYOTE, HE BUYS THE THINGS FROM ACME ALREADY TO WORK!!
+PEPE LE PEW I miss loony toones
Loved the video, it was very informative while still being entertaining.
Glad you enjoyed it. I don't know whats so humorous though...
Thanks very much. Great explanation. (It was better with the toothbrush than the screwdriver.)
Thanks
Thanks a lot sir! Making a homemade muffler/baffle system on a motorbike. I've done this before but I keep forgetting the basics! Lessons that I keep learning again and again! Hey! Just like that song lyric from Two Kevins by the band Cigar. Anyway, thanks again! Peace.
Awesome! Glad you learned something
Excellent demostration, thank you so much.
Cool. Thanks. 3 inch exhaust systems common? I've got a stove I made from scrap metal and was thinking of using old exhaust pipe and maybe even muffler in it if I could find it. i've seen some different stove systems that have a similar concept as the muffler with baffles and such.
I love how you used the tooth brush as a pointer
+angga pradana haha thanks
Thank you. Well explained, does it matter if I replace a corolla muffler with another one from a different sedan, say from a nissan sunny?
Great video bro! I wish more people made em like you!
Thanks. I'll have an updated video on this soon.
Our teachers also not teach that much in deep
Thanks for this video!!🙏❤
...and thanks for also teaching us the other uses of a used toothbrush
+Ray J haha of course a toothbrush can be used in many ways!
Subbed cause the dudes pointer was a heavily used toothbrush. And the info was pretty good too ;)
+Michael Yiannett haha thanks
i like how u present the components of the video.. also the fact that u do it with a dead tooth brush: D ..kudos brother
+hybrids0ldier thanks and kudos
left a 👍 for using a used up toothbrush as a pointer
Thanks
Great video, but I don’t understand why one would drill holes in an exhaust
Lol
c=speed of light you would need to use v or speed of sound. c/f finds the wavelength in an electromagnetic spectrum
+Franze Roque Agreed
nyat, drills the holes in bottom muffler to make water from keeping rusting, also holes make for lighter and for lighter go faster because race car.
+Eric Muschlitz how about no muffler?
No rust, no power lost, lighter and actually sounds like race car!
Long over due vid. Anther great one to watch. Thanks
Thank you :)
Your one of a kind. Thank you for your work; and thank you for sharing.
Amazing! Thanks
4:53
I used your suggestion and drilled holes in the bottom of my muffler now it sounds like my car makes these wheezy fart noises when it's at idle and when I rev the engine it sounds like a kazoo. How many holes was I supposed to drill?
four!
Love this, straight to the point.
I should section a straight pipe next then
Sounds pretty good without the muffler !!!
+Mark N. Reprisal for a Corolla yes!
Bravo good sir! Bravo, well explained and simply broken down.
+timo v Thanks for the compliment
I was going to ask you if you thought drilling a small hole to allow water out is a good idea. Then you said it. Cool!
Yeah but then you'll have an exhaust leak.
2:58 180 degrees out of phase, not 180 per cent. But a fascinating video and well explained. Thanks!
+MatchstalkMan yep thanks for the correction
great video !!! do you know if the muffler of a GMC Safari works the same ?
Wow u haven't heard of the Safari in a long time!
Nice video explaining everything clearly. I have a question for you though. The silencer pipe in my 2005 Camry center exhaust section has something that's broken off which causes a rattling sound when the engine is idling rough or when I shake the end muffler. The affected section is the bulging part in the silencer pipe after the cat converter but before the end muffler. The car drives fine for now and there is no check engine light. Should I
1. replace it or,
2. cut it open and try to weld it back/cut the broken section off or,
3. just ignore it altogether?
I'm appreciative of your opinion. Thanks.
Some of the terminology and explanation was a bit too crude but being an Acoustic Engineer who designs these reactive mufflers for mining dump trucks and a whole lot, I enjoyed youor video.
However, I must add that the explanation at 2:19 is wrong. That connecting neck is not for exhaust gases to bypass the last chamber (however that inadvertently will happen), that is what is called a "Helmholtz Resonator". The volume of the second chamber and geometry of the connecting neck (among a lot of other factors) decides what is the resonant frequency of that 2nd chamber. The sound frequencies at and near the resonant frequency get attenuated due to helmholtz effect.
Would drilling drain holes into the bottom effect the sound/go against the engineering, and how, or how not?
Yea that's not very productive
Thank you for this video, I was wondering how they worked. Great job
+goriman 750 Cool glad you learned something