Let's hang out: superpeer.com/driving4answers Support d4a: driving-4-answers-shop.fourthwall.com/ Revive the five: amzn.to/3r0ERaH Build the four: amzn.to/2KyP6Cb Read the six: amzn.to/37n8rzc I couldn't find anything for the three so you get this: amzn.to/2ITRQtD
It’s so refreshing to have someone explaining this so clearly and correctly. Too many people who tackle engineering subjects often resort to “dumbing it down” because they just don’t think people watching will have the intelligence to understand it.
I think it has more to do with people who understand technical topics not knowing how to translate their understanding into non-technical terminology without losing a lot in the translation. Or to put it differently, engineers usually don't do words good.
@@mihailmilev9909 There is an error in this video. 17:06 you say when 2 are at the top, 2 are at the bottom. This doesn’t work. If one pair alternates with another pair that leaves the 3rd pair with no alternating partner. You can even see the error in where you paused the animation, 1 and 6 are not at TDC because this animation shows TDC when the conrod big end green bearing touches the line, which it isn’t where you paused it. Another problem with what you described is if the 2 are up and 2 are down the 2 pairs of conrods/cranks cancel each out. But the other 2 in the middle have the cranks out to one side and no counter force. What is actually happening in my opinion is that when 1 and 6 are at TDC, 2,3,4, and 5 are all at the same level with the cranks of 3 and 4 off to one side and cranks of 2 and 5 off to the other side, which balances left to right. And up and down forces are balanced out by 1 and 6 cranks being at TDC and the other 4 cranks all being 30 degrees below the midway point, with one pair on the way up and the other pair on the way down.
I appreciate how you jumped right into the explanation, rather than leading in with an simple explanation of how engines work like a lot of channels do. Thanks. This is a really good video.
I pity the fool who's watching a video about the balancing of engines with various numbers of cylinders if they don't already know how an engine works.
@@valentinuiliqnow6198 as compared to the inline 6, i think you exchange packagin for a little inbalance (because now you have 3 pistons in two different planes). They also are limited in bore and the engine block stronght i think
@@valentinuiliqnow6198 Good point. Another interesting configuration, one that I've never heard any examples of, is the 170 or so degree V. It would have almost as good balance as a Boxer but without forgoing gravity assist for the oil. The non-exact spacing of power strokes breaks up resonances while providing a bit of musicality to the engine's note. Or so I hypothesize. Maybe someone's tried it and the reality doesn't match my imagination.
It's amazing that car companies don't put more emphasis on the inline 6.. Such a simple design that is easy to work on at the same time. I would think with today's tech we could build an amazingly powerful I-6 that is also efficient.
@@charlesdjones1 cue the B58 engine. It's truly an amazing engine when considering how efficient and how powerful the engine is. Quite an upgrade from older BMW I6 engines.
You are the modern day Engineering Explained, I remember watching his videos learning about engines in his dimly lit room with a white board back then, now you just explained it so perfectly. I just love watching every video you share, can't wait for more on this.
@@fila1445 I assumed they were chains, I meant the accessory or serpentine belts. I tried helping a friend with inline five in the Fiat Coupe do those belts once....we both scraped our knuckles off
@@d4a According to wiki, Volvo calls this engine SI6 (short inline 6) and the engine itself is 1mm shorter than their previous inline 5. I'm really curious how they did it
Oh and i was having a bad time understanding secondary balances this last week and then you show up, you've read my mind Thank you for sharing such amazing content
Same for me! I was just thinking about posting a comment on this channel to ask for a video about engine balance. Not necessary, this guy reads our minds... My gratitude is eternal. :)
"And that's because this video is actually the first in a little series..." Me: *audibly* YES! Speaking of series, when can we expect the next episode of boost school?
Glad you like the series, thanks for watching :) Next episode of boost school is coming likely in the first week of January, it would have been sooner but I want to cram in the Yaris GR engine video in this Sunday, so boost school is getting delayed a bit.
When I picked up my 88' Supra last week I wasn't super excited it "only" had a 6-cyn engine and it wasn't even a V-6. Now I absolutely adore the design and realized it's way better than what is on most cars. I didn't even realize before I picked the car up that all the cylinders were lined up in a row! Talk about a massive and perfectly balanced engine!
A LOT of information in this video. I like the way you explained secondary imbalances. That is something I've struggled to wrap me head around for a long time. Looking forward to the rest in the series.
Please do yamahas crossplane, hearing so much about how smooth it is, how the rider feels so connected with the throttle and how it doesn't stress the tyres. Thank you!
Every piston is forward 90° in relation to the one before it. it would have severe primary balance problem(solved with balance shaft)but the crank will not speed up or slow down during the tdc or bdc as the speeding up is acting against the slowing down of another piston .. it gets more detailed from here but this is the basic idea.. somthing like a 90° v twin sharing the same crank pin
It's so great that you're doing this. While I always enjoyed the humour that you often added to your dissertations, I'm not complaining because I so appreciate your efforts that I'm content to have these in whatever style you most enjoy producing. Thank you so much!
I definitely want to act stupid again, but somehow there's so many of these topics that I want to cover and I end up getting lost in trying to present them the best way that I can so I just forget about the humour 😔
Dang, I love this guy's videos! Clear, concise, to-the-point, no long-winded irrelevant info. I'm dying to hear you explain & evaluate Freddie Spencer's 1983 Honda NS-500 V3 TWO-stroke Gran Prix motorcycle race bike! And maybe also Bugatti's W-16.
Every time someone sees my i3 Polo engine doing it's Macarena thing in the bay, it seems weird to them. I'll just reference this video from now on. Great video!
This is a fun topic, and I learned some new things. The longitudinal rocking is new to me, but it reminds me of issues that aircraft engine manufacturers encountered in the late 1930s with double row radial engines. On a big radial, one cylinder has a (sort of) conventional connecting rod that is connected to the crank pin. The rest are connected to that with pins that are not concentric to the crank pin. So when the rod makes the pendulum motion that you described, the pistons, with their “link” rods tend to wrap slightly, causing them all to undergo different acceleration rates throughout the stroke of the main rod. The result is a small circular motion of the entire engine, where the cylinder centerlines remain on their static plane. If the engine has seven cylinders, the motion is nearly negligible, but with nine it’s a bit more severe. For single row engine, it’s not a problem, but if it’s a double row (eighteen cylinders), big problem! With that configuration, the two crank pins are 180° apart, like bicycle pedals. The circular motion, phased 180° apart, resulted in a wobbling motion of the whole engine, that attempted to constantly change the plane of rotation of the propeller. Watch out prop shaft and main bearings! The fix was to employ two sets of second order balances, rotating at twice crankshaft speed. This is what it took Pratt and Whitney and Wright to cross the 2,000 HP threshold, just in time for WWII Corsairs, Hellcats and others.
My brother had a Suzuki sprint in the Virgin Islands and had a three cylinder turbo and it actually screamed. My Toyota Land Cruiser has a straight six and it runs beautifully. Thanks for explaining this for us motorheads.
This is well-presented example on primary and secondary engine balance. The preface showing piston speed differences during crank shaft rotation was monumental in explaining discrepancies of the latter balance. Nicely done!
Absolutely stunning presentation. This guy explains the different types of engine clearly, accurately and with a humour that is not stupid. Well done, looking forward to seeing more 👍👍👍
That was the simplest and best explanation I have ever seen on con-rod angularity and piston speed. (and I've seen and read a lot over last ~50 years) It's something I've been aware of but probably too much math in previous explanations? Primary and secondary forces and balance shafts, about the same as I knew from 1970's but the first part was absolutely brilliant
For all those opining the most well-known transverse 6 (Volvo), this is only possible because aisin managed to cram a 6-Speed auto Gearbox into a space narrower than the clearance for most manual units... Very impressive.
Is there any reason they couldn't put the transmission/transaxle in front of or behind the engine motorcycle style instead of on one end of the engine? A geared power takeoff from the center of the crank would make crankshaft torsional vibration less of an issue to boot.
@@bennetteberle4476 They did that on aero engines to shorten the length - putting ancillary drives in the middle of the block - would be be very good for the I6 in FWD.
@@rosiehawtrey Honda did that with the transverse I-6 in their CBX motorcycle. A chain drive from the middle of the crank to a jackshaft that drove the clutch. They introduced that bike in 1978 and discontinued it in 1982. It's now a sought-after collector's item.
Now I know why people love BMW engines because they have smooth power delivery from all 6 pistons which are balanced and timed in a way to make sure the car doesn't lose performance. Engineering explained goes way over my head but this guy is an amazing teacher.
The in line 6 was used in the early Jag E-Types. The in line 5 was used in the Volvo 7 and 8 series sedans and estates as well as VW Golf GTi's. The Lotus Esprit used a in line four for decades. You don't see very many in line 3's in the US. This was very educational. I wish I'd learned about this when I was in school. Thank you.
One of the most UNDERRATED channels I've ever seen I'm seriously looking forward to this balance series man Love your work BTW, if it isn't too much too ask, can you also cover different firing orders please? Thanx a lot D4A
The best way to explain engine primary and secondary nuances yet. Thanks so much for making these! Now I'm really looking forward to the next Mazda straight 6. Let's hope it's not just DI and also throws in some occasional intake valve cleaning Port Injection for a truly remarkable engine.
Looking forward to you covering engine balance in V6 engines. My place of work has just started to to produce V6 engines after building nothing but V8s. The V6 engines have a balance shaft fitted.
I've always loved physics and 1 year ago i found my passion in cars and to find a channel like yours, that combines these passions is truly amazing. It's clear, easy to follow and your explanations are very clean. You have no idea how much i appreciate this kind of content. Thank you
If you are going to make a series on engine configurations, please include radial engines. Also thank you for making these videos, I appreciate the work you put into these.
Very concise and instructive presentation. It confirms why over 90% of the world's heavy trucks use a straight 6 configuration and why a straight 6 in a front engined rearwheel drive car gives the nicest driving experience. Personal opinion only. Just one little problem - at time 17:10, you stated that in the six, when two pistons are at the top, two are at the bottom. Clearly a 'slip of the tongue' but quite important as that scenario only occurs with a crank with 180 throws, not 120, which is what makes an in-line 4 so beastly.
can't wait for a vid on V configurations. curious to see if V8 dampens secondary imbalance in inline 4, and to hear how a V12 is just two inline 6s duct taped together.
I'm looking forward to this series. Would be sweet to see you explain an inline 8 though. I know its uncommon but legend has it they were so smooth you could put a coin sideways on it and it wouldn't fall over!
Thats for I6. After I6 it cant get much better. Everything else is just 2 times I3 vor a V6 or 2x I4 for V8, 2x I6 for a V12 and so on. More cyclinders result in more low end ooomph, but primary and secondarys still stay about the same. In V configs the engine also rocks a bit sideways around the crankshaft. B4 and B6 are about perfekt, because piston/conrod masses cancel each other out over the mirrored design.
@@casemodder89 Wellll....Kind of. There are two V8 engines. Cross plane, and flat plane. Cross planes are much smoother IMO and have no I4 counterpart aside from Yamaha's R1. Something similar is also possible in the V6 world, but aside from the Alfa Romeo's BEAST of a V6, I don't know of any other "oddball" V6 engines that don't mimic an I3. I think maybe the early Buick 3.8 V6 did so but then they switched to offset crank pins.
I fully enjoy my I5 3.7L Colorado. So much fun to drive. Is a little rough at startup till it warms up a bit. The overlap explains a lot on some of its “personality” when driving. Thank you for that.
@Yuck Foutube it is, and I honestly really do like a 5 cylinder engine. Unfortunately mine is in a 4700lb truck, according to the local scrap yard scale, and with a stock 220hp and about that much torque... She's a little on the slow side.
Damn man, you have done some awesome work explaining this. I'm not knocking engineering explained, but this was an order of magnitude easier to understand.
I learned more from this than I did in one of my college classes. When you mentioned inline 6 not being transverse, Volvo managed to do it. Some how haha! Love the series!
One of the things I loved when owning BMWs was the i6 engine. So smooth that I'd often check if the car is running at idle. Now the i4 engines with their turbos are more efficient and more powerful, but the amount of noise (direct injection and vibrations) is really bad... Oh, and the old Audi 2.2/2.3l 10V engines made a great noise.
By far and large and without any fear of being unfair to others this is the very best explanation on the subject of engine balancing. The secondary inbalance is very well detailed. Thank you very much for taking your knowledgement and time to produce this so great video as well as the other related ones. Would like to add that there is a very good old book named V6 performance written by Pat Ganahl that covers very deeply all 90' degrees usa made V6 engines and very detailed about the semi even firing engines that were offered for some time.
Well just wow, this is amazing. While I understood a little bit of this before, never have I seen a better display of primary and secondary imbalances, including the piston speeds effects. If not done already, can you do the same with V and W configuration engines? This is simply an amazing explanation. Thank you!
What a great video. Best and most complete explanation. We can only appreciate the time and effort you put in to go so far as to study the physics of the engine.
Enjoyed your video. There are not many videos that explain secondary balance well, and this video is one one of the few. I’ve had 1NZ-FXE, 4A-GE, 1AZ-FSE, 3S-FE, 5S-FE (Camry), 20R, 22R-E 2AR-FXE, 7M-GE, 2GR-FE engines in the various Toyota’s I’ve owned and leased through the years. When it came to engine smoothness/balance, the 7M-GE was by far the best. Not only was it smooth (as in lack of vibration), the exhaust note was the most uniform. I read that 2.0L is about the largest 4-cylinder engine you want to make with acceptable NVH characteristics and I would agree based on experience. 20R/22R engines were very good engines, but best driven at lower RPM as it was mostly vibration and noise past 4000 RPM. 3S-FE was also a good engine. Revved higher and more responsive than the 20R/22R, but it was the balance-shaft equipped 5S-FE Camry that I first drove in the ‘90s that amazed me as it was amazingly smooth all the way to redline.
Everybody's in love with that thing, myself included. Actually a video on it is a pretty good idea. I haven't dug yet but I don't know how much info is released when it comes to the engine. I need to go beyond the basics and hp and torque figures. Imma go look now, I just got super curious. Update: Vid is happening! Thank you for the idea.
Thank you sir. I love how you broke this down to a nice simple explanation of each engine combo. Can't wait for the others video's to drop. Keep up the good work brother...
I can't wait for another thorough 'educational' videos about engines like this I really love this kind of content Thank you for providing such a great video, sir I really want to see V6 vs VR6 😆
I really appreciate these videos. Wanna see a fascinating engine? Check out the V4 in the VFR1200. I owned one, it was awesome. The phasing and balance was a marvel of engineering.
It'll be fantastic if you cover some odd/uncommon piston engines like Radials, VR, W, X, U, H, Delta, Opposed, Inline 7, V3, etc. It'll take a while but should make a great series with clear episode goals. :)
Same as the inline five, but with even less relevant primary imbalance, I suppose. I actually hope I hear a automobile inline 7 before i die, because they would sound awesome.
Pre 1950 they had inline 8's hell they even had v12 and v16 cars. They never made much power but provided really smooth operation and were easy to shift.
Excellent video, very informative and educational. Love the math, which gives me something to think about. I did remove the balance shaft from my Procharger 4.3L V6 to drop the spinning mass. My understanding is that the engine was balanced internally when I went to forged internals and four bolt mains, as well with the flex plate and harmonic balancer considered. Would love for you to cover this in the V series engines because the Vortec 4.3L V6 has an even fire offset dual rod journal configuration. Many guys have built Odd Fire motors where supposedly the standard dual V engine rod journal is implemented. Interesting stuff. Thanks for what you do.
![[LIVE] : ONE ลุมพินี 88 | คู่เอก "ป้อมเพชร vs อัสลามจอน"](http://i.ytimg.com/vi/1ZqTVVbMgbo/mqdefault.jpg)
Let's hang out: superpeer.com/driving4answers
Support d4a: driving-4-answers-shop.fourthwall.com/
Revive the five: amzn.to/3r0ERaH
Build the four: amzn.to/2KyP6Cb
Read the six: amzn.to/37n8rzc
I couldn't find anything for the three so you get this: amzn.to/2ITRQtD
This is the world's rarest model rx7, ever heard of it?
www.rx7club.com/2nd-generation-non-technical-pictures-198/restamped-mazda-rx7-1148475/
Question:
Why are 3 cylinders for motorcycles than even 4 cylinders if they are unbalanced.
I have had questions about this forever. Thanks for the easy to understand video. Please include a video for 1 to 4 rotor rotaries in the series
@@hurshpatel3575 motor cycle engine use crossplane crankshaft
You forgot the inline 8
It’s so refreshing to have someone explaining this so clearly and correctly. Too many people who tackle engineering subjects often resort to “dumbing it down” because they just don’t think people watching will have the intelligence to understand it.
Or use generic and uninspired explanations which carry little meaning and insight. This guy hits hammer on it's head with his presentation.
I think it has more to do with people who understand technical topics not knowing how to translate their understanding into non-technical terminology without losing a lot in the translation. Or to put it differently, engineers usually don't do words good.
Too bad he's only partially correct.
@@tombarber8013 wym?
@@mihailmilev9909 There is an error in this video. 17:06 you say when 2 are at the top, 2 are at the bottom. This doesn’t work. If one pair alternates with another pair that leaves the 3rd pair with no alternating partner. You can even see the error in where you paused the animation, 1 and 6 are not at TDC because this animation shows TDC when the conrod big end green bearing touches the line, which it isn’t where you paused it.
Another problem with what you described is if the 2 are up and 2 are down the 2 pairs of conrods/cranks cancel each out. But the other 2 in the middle have the cranks out to one side and no counter force.
What is actually happening in my opinion is that when 1 and 6 are at TDC, 2,3,4, and 5 are all at the same level with the cranks of 3 and 4 off to one side and cranks of 2 and 5 off to the other side, which balances left to right. And up and down forces are balanced out by 1 and 6 cranks being at TDC and the other 4 cranks all being 30 degrees below the midway point, with one pair on the way up and the other pair on the way down.
Mate. I'm a Mechanical engineer designing powertrains and this was a great summary to get my head back in the game. Love it.
This guy explains better than my mechanics teacher
Yea this dude is legit.. ....
@@trentdawg2832 He is "legit"? He has NO idea how long a power stroke lasts. Hello?
Some people were NOT meant to teach. Just because you THINK you know or actually KNOW your material does not mean you can teach it or relate to it ..
All ya teacher cares about is paycheck
@@Flies2FLL you obviously never paid attention.
This guy deserves a massive you tube following. Great work!
i was unset he only talked about a flat plane inline 4 cylinder until the end of the video
He is terrific isn't he?
Totally agree, this is the best explanation and awesome instructor. I'm going to buy all his videos just to learn more....
I appreciate how you jumped right into the explanation, rather than leading in with an simple explanation of how engines work like a lot of channels do. Thanks. This is a really good video.
I pity the fool who's watching a video about the balancing of engines with various numbers of cylinders if they don't already know how an engine works.
Perfectly balanced, as all things should be.
cringe marvel reference, go back to reddit
what about vw vr6 engine ? ? ?
,,.
@@valentinuiliqnow6198 as compared to the inline 6, i think you exchange packagin for a little inbalance (because now you have 3 pistons in two different planes). They also are limited in bore and the engine block stronght i think
@@valentinuiliqnow6198 Good point. Another interesting configuration, one that I've never heard any examples of, is the 170 or so degree V. It would have almost as good balance as a Boxer but without forgoing gravity assist for the oil. The non-exact spacing of power strokes breaks up resonances while providing a bit of musicality to the engine's note.
Or so I hypothesize. Maybe someone's tried it and the reality doesn't match my imagination.
I always knew that 6 cylinders are very smooth, but now I know why. Great vid!
It's amazing that car companies don't put more emphasis on the inline 6.. Such a simple design that is easy to work on at the same time. I would think with today's tech we could build an amazingly powerful I-6 that is also efficient.
@@charlesdjones1 cue the B58 engine. It's truly an amazing engine when considering how efficient and how powerful the engine is. Quite an upgrade from older BMW I6 engines.
@@charlesdjones1 jaguar, mercedes, and mazda came back to it.
@@charlesdjones1 i want more Vr6 🤩
That's why I love my 2JZ. Best inline 6 ever made.
You are the modern day Engineering Explained, I remember watching his videos learning about engines in his dimly lit room with a white board back then, now you just explained it so perfectly. I just love watching every video you share, can't wait for more on this.
Can't use an inline 6 in a transverse FWD application?
Volvo: hold my beer
i work at shop that specializes in Volvos
turns out i hate working on Volvos...
Must be fun changing a belt on a transverse inline 6 😅
@@d4a its not that bad since timing chain is located over a gearbox.
Changing alternator or ac compressor on the other hand...
@@fila1445 I assumed they were chains, I meant the accessory or serpentine belts. I tried helping a friend with inline five in the Fiat Coupe do those belts once....we both scraped our knuckles off
@@d4a According to wiki, Volvo calls this engine SI6 (short inline 6) and the engine itself is 1mm shorter than their previous inline 5. I'm really curious how they did it
Oh and i was having a bad time understanding secondary balances this last week and then you show up, you've read my mind
Thank you for sharing such amazing content
Same for me! I was just thinking about posting a comment on this channel to ask for a video about engine balance. Not necessary, this guy reads our minds...
My gratitude is eternal. :)
Definitely want to see those can’t wait 👍🏻 18:50
Straight 8 and Subaru flat 12 F1.
"And that's because this video is actually the first in a little series..."
Me: *audibly* YES!
Speaking of series, when can we expect the next episode of boost school?
Glad you like the series, thanks for watching :) Next episode of boost school is coming likely in the first week of January, it would have been sooner but I want to cram in the Yaris GR engine video in this Sunday, so boost school is getting delayed a bit.
I'm excited for the V engines!
When I picked up my 88' Supra last week I wasn't super excited it "only" had a 6-cyn engine and it wasn't even a V-6.
Now I absolutely adore the design and realized it's way better than what is on most cars. I didn't even realize before I picked the car up that all the cylinders were lined up in a row! Talk about a massive and perfectly balanced engine!
This is how so many people think. "If it's not a V8, it's gutless" - My friend when talking about a twin turbo V6 that makes 2x the power of their V8.
I'm in a car engineering school but, every time I watch your video i learn something new!! Absolutely awesome!!
It’s a 6 cyl video! Perfectly balanced!
A LOT of information in this video. I like the way you explained secondary imbalances. That is something I've struggled to wrap me head around for a long time. Looking forward to the rest in the series.
I never knew that the piston speed is faster at the top than the bottom. I thank you again for sharing your knowledge! I love your videos!
Please do yamahas crossplane, hearing so much about how smooth it is, how the rider feels so connected with the throttle and how it doesn't stress the tyres. Thank you!
Every piston is forward 90° in relation to the one before it. it would have severe primary balance problem(solved with balance shaft)but the crank will not speed up or slow down during the tdc or bdc as the speeding up is acting against the slowing down of another piston .. it gets more detailed from here but this is the basic idea.. somthing like a 90° v twin sharing the same crank pin
It's so great that you're doing this. While I always enjoyed the humour that you often added to your dissertations, I'm not complaining because I so appreciate your efforts that I'm content to have these in whatever style you most enjoy producing. Thank you so much!
I definitely want to act stupid again, but somehow there's so many of these topics that I want to cover and I end up getting lost in trying to present them the best way that I can so I just forget about the humour 😔
Dang, I love this guy's videos! Clear, concise, to-the-point, no long-winded irrelevant info. I'm dying to hear you explain & evaluate Freddie Spencer's 1983 Honda NS-500 V3 TWO-stroke Gran Prix motorcycle race bike! And maybe also Bugatti's W-16.
Every time someone sees my i3 Polo engine doing it's Macarena thing in the bay, it seems weird to them. I'll just reference this video from now on. Great video!
The straight eight is another well balanced engine and one I have always liked.
This is a fun topic, and I learned some new things. The longitudinal rocking is new to me, but it reminds me of issues that aircraft engine manufacturers encountered in the late 1930s with double row radial engines. On a big radial, one cylinder has a (sort of) conventional connecting rod that is connected to the crank pin. The rest are connected to that with pins that are not concentric to the crank pin. So when the rod makes the pendulum motion that you described, the pistons, with their “link” rods tend to wrap slightly, causing them all to undergo different acceleration rates throughout the stroke of the main rod. The result is a small circular motion of the entire engine, where the cylinder centerlines remain on their static plane. If the engine has seven cylinders, the motion is nearly negligible, but with nine it’s a bit more severe. For single row engine, it’s not a problem, but if it’s a double row (eighteen cylinders), big problem! With that configuration, the two crank pins are 180° apart, like bicycle pedals. The circular motion, phased 180° apart, resulted in a wobbling motion of the whole engine, that attempted to constantly change the plane of rotation of the propeller. Watch out prop shaft and main bearings! The fix was to employ two sets of second order balances, rotating at twice crankshaft speed. This is what it took Pratt and Whitney and Wright to cross the 2,000 HP threshold, just in time for WWII Corsairs, Hellcats and others.
My brother had a Suzuki sprint in the Virgin Islands and had a three cylinder turbo and it actually screamed. My Toyota Land Cruiser has a straight six and it runs beautifully. Thanks for explaining this for us motorheads.
I look forward to the rotary engine explanation since I'm sure you will cover it. I learned a lot today, thanks D4A
IMMA TELL YOU ANYWAY
That is what I wanted to see explained in inline to v explanation. Want to see even if completely useless for me, but addicted to this instruction...
2JZ the world. Seriously though. Ford 300 I6. Jeep 4.0L. RB series, JZ series, Barra, Cummins, BMW, Jaguar, blah blah blah. The I6 is pretty amazing. Whether you want reliability or 2500hp.
True but it's hard to put in a compact car, it's not so good for the chassis weight/mass distribution, transmission, consumption, etc etc.
@@Nit2315 e30 not compact enough?
I love my M54, but "reliable" isn't in BMW's vocabulary.
@@Nit2315 Do you know the 323ti or 325ti ? Let's talk about this item again after learning something about these cars. ;-)))
@@Nit2315 my 323ti disagrees XD
This is the best TH-cam channel about car mechanics theory!
This is well-presented example on primary and secondary engine balance. The preface showing piston speed differences during crank shaft rotation was monumental in explaining discrepancies of the latter balance. Nicely done!
Great video 👍👍👍
Can’t wait for the same stuff for V engines with different cylinder bank angles and different kind of crank angle applications.
And V3s and V5s.
I learned more in this 19 min & 29 sec video about engine balancing than all the mechanics combine I've ever talked to. WOW !!
15 people have unbalanced engines.
I am one of the 15
Me also
I really was not interested but you got me watching the whole vid.! You must be a teacher!
This channel and mighty car mods are my all time youtube favourites!!!
Absolutely stunning presentation. This guy explains the different types of engine clearly, accurately and with a humour that is not stupid. Well done, looking forward to seeing more 👍👍👍
Excellent video mate very clear and easy to understand! looking forward to more. This channel is so underrated.
That was the simplest and best explanation I have ever seen on con-rod angularity and piston speed. (and I've seen and read a lot over last ~50 years)
It's something I've been aware of but probably too much math in previous explanations?
Primary and secondary forces and balance shafts, about the same as I knew from 1970's but the first part was absolutely brilliant
For all those opining the most well-known transverse 6 (Volvo), this is only possible because aisin managed to cram a 6-Speed auto Gearbox into a space narrower than the clearance for most manual units... Very impressive.
Aisin is completely underrated. Toyota spinoff with global reach
Is there any reason they couldn't put the transmission/transaxle in front of or behind the engine motorcycle style instead of on one end of the engine? A geared power takeoff from the center of the crank would make crankshaft torsional vibration less of an issue to boot.
@@bennetteberle4476 They did that on aero engines to shorten the length - putting ancillary drives in the middle of the block - would be be very good for the I6 in FWD.
@@rosiehawtrey Honda did that with the transverse I-6 in their CBX motorcycle. A chain drive from the middle of the crank to a jackshaft that drove the clutch. They introduced that bike in 1978 and discontinued it in 1982. It's now a sought-after collector's item.
Now I know why people love BMW engines because they have smooth power delivery from all 6 pistons which are balanced and timed in a way to make sure the car doesn't lose performance. Engineering explained goes way over my head but this guy is an amazing teacher.
I didn't think I would like this video, but I learned a lot and I'm glad I watched it. Thanks for the info
This explained exactly what I was looking for. It confirms my suspicion, inline 3 is awkward and inline 6 is the best engine configuration.
That was the most descriptive and understandable explanation of straight engine balance I've seen. Please do one on V and flat engines as well!
Very, very interesting.
Very, very well explained.
Thanks for posting.
This is one of the best videos I ever saw in this channel, thanks!
I’ve been taking them apart for over 35 years. Nicely explained 🤠
Even 6 cylinder diesel like the 1hd from 80 series, clutters and vibrate smoother than newer toyota 2.8 diesel on Fortuner or Hilux today.
That's just phisics jajaja
straight six is just that good
Diesel engines are heavier, so of course the imbalance gets amplified
those 2.8 are four cylinders I believe
@@guillaumegaudin694 he’s comparing diesels in both scenarios.
The in line 6 was used in the early Jag E-Types. The in line 5 was used in the Volvo 7 and 8 series sedans and estates as well as VW Golf GTi's. The Lotus Esprit used a in line four for decades. You don't see very many in line 3's in the US. This was very educational. I wish I'd learned about this when I was in school. Thank you.
One of the most UNDERRATED channels I've ever seen
I'm seriously looking forward to this balance series man
Love your work
BTW, if it isn't too much too ask, can you also cover different firing orders please?
Thanx a lot D4A
The best way to explain engine primary and secondary nuances yet. Thanks so much for making these! Now I'm really looking forward to the next Mazda straight 6. Let's hope it's not just DI and also throws in some occasional intake valve cleaning Port Injection for a truly remarkable engine.
Thank you for the extremely informative videos.
Perfect compacted knowledge without being boring or to demanding. Thumbs up!
Looking forward to you covering engine balance in V6 engines. My place of work has just started to to produce V6 engines after building nothing but V8s. The V6 engines have a balance shaft fitted.
I can't wait for him to trash talk on 90° V6s
D4A... Nothing to add but a big thank you for all your videos. You make it look all so simple...
Looking to buy an Abarth Stilo 2.4L Inline-5 and this video explained what this "36 degree overlap" was all about. Thank you man!
Motorcycle engines are fun. They still play around with crank angles, v4, and big bang firing order
I've always loved physics and 1 year ago i found my passion in cars and to find a channel like yours, that combines these passions is truly amazing. It's clear, easy to follow and your explanations are very clean. You have no idea how much i appreciate this kind of content. Thank you
If you are going to make a series on engine configurations, please include radial engines. Also thank you for making these videos, I appreciate the work you put into these.
Holy moly, this is the best video on this topic on whole of youtube, never stop making these videos you guys , this is amazing.
I just LOOOOVEEE those freaking I6 engines, just soo beautiful🥲🥰🥰🥰
Very concise and instructive presentation. It confirms why over 90% of the world's heavy trucks use a straight 6 configuration and why a straight 6 in a front engined rearwheel drive car gives the nicest driving experience. Personal opinion only. Just one little problem - at time 17:10, you stated that in the six, when two pistons are at the top, two are at the bottom. Clearly a 'slip of the tongue' but quite important as that scenario only occurs with a crank with 180 throws, not 120, which is what makes an in-line 4 so beastly.
can't wait for a vid on V configurations. curious to see if V8 dampens secondary imbalance in inline 4, and to hear how a V12 is just two inline 6s duct taped together.
The first time I started up and drove my 97 Mercedes C280, I noticed the smoothness immediately. I always wondered about this. Thanks!
I'm looking forward to this series. Would be sweet to see you explain an inline 8 though. I know its uncommon but legend has it they were so smooth you could put a coin sideways on it and it wouldn't fall over!
Thats for I6.
After I6 it cant get much better. Everything else is just 2 times I3 vor a V6 or 2x I4 for V8, 2x I6 for a V12 and so on.
More cyclinders result in more low end ooomph, but primary and secondarys still stay about the same.
In V configs the engine also rocks a bit sideways around the crankshaft. B4 and B6 are about perfekt, because piston/conrod masses cancel each other out over the mirrored design.
@@casemodder89 Wellll....Kind of. There are two V8 engines. Cross plane, and flat plane. Cross planes are much smoother IMO and have no I4 counterpart aside from Yamaha's R1. Something similar is also possible in the V6 world, but aside from the Alfa Romeo's BEAST of a V6, I don't know of any other "oddball" V6 engines that don't mimic an I3. I think maybe the early Buick 3.8 V6 did so but then they switched to offset crank pins.
I fully enjoy my I5 3.7L Colorado. So much fun to drive. Is a little rough at startup till it warms up a bit. The overlap explains a lot on some of its “personality” when driving. Thank you for that.
I was definitely curious about the cross plane I4. I do however have an I5. It is a really smooth engine!
@Yuck Foutube it is, and I honestly really do like a 5 cylinder engine. Unfortunately mine is in a 4700lb truck, according to the local scrap yard scale, and with a stock 220hp and about that much torque... She's a little on the slow side.
Damn man, you have done some awesome work explaining this. I'm not knocking engineering explained, but this was an order of magnitude easier to understand.
very informative. Looking forward to the crossplane discussion
Awesome- clear, concise- much info conveyed. Can't wait to see the rest of it.
Six in a row is the way to go :)
I learned more from this than I did in one of my college classes. When you mentioned inline 6 not being transverse, Volvo managed to do it. Some how haha! Love the series!
You forgot the ADO17 with the 2.2 litre E series in the Leyland Landcrab cars.
One of the things I loved when owning BMWs was the i6 engine. So smooth that I'd often check if the car is running at idle. Now the i4 engines with their turbos are more efficient and more powerful, but the amount of noise (direct injection and vibrations) is really bad...
Oh, and the old Audi 2.2/2.3l 10V engines made a great noise.
Yeah but there m cars don’t have 4 cylinders faster so it just mean the six cylinders are fast
best videos ever for understanding mechanics
thank you very much in all languages of the world
greetings from Yemen
"You just cant hate a perfectly balanced engine"
Someone forgot to tell Jeep that. I wish they kept the 4.0L even if was a non-standard option.
AMC did Chrysler doesn't care.
I put a 5 cylinder Mercedes in my CJ...
When the Wrangler got redsigned around 2006 the 4.0 didnt fit anything. Plus the engine needed a major redesign, new head etc.
By far and large and without any fear of being unfair to others this is the very best explanation on the subject of engine balancing. The secondary inbalance is very well detailed.
Thank you very much for taking your knowledgement and time to produce this so great video as well as the other related ones.
Would like to add that there is a very good old book named V6 performance written by Pat Ganahl that covers very deeply all 90' degrees usa made V6 engines and very detailed about the semi even firing engines that were offered for some time.
Well just wow, this is amazing. While I understood a little bit of this before, never have I seen a better display of primary and secondary imbalances, including the piston speeds effects. If not done already, can you do the same with V and W configuration engines? This is simply an amazing explanation. Thank you!
What a great video. Best and most complete explanation.
We can only appreciate the time and effort you put in to go so far as to study the physics of the engine.
This guy got me proud of owning an inline six
Now I understand how the Geo 3 & 4 cylinder engines worked in the early 90’s. Thanks......Jim
This mans really do be teaching me theoretical engineering degree knowledge doe.
Enjoyed your video. There are not many videos that explain secondary balance well, and this video is one one of the few.
I’ve had 1NZ-FXE, 4A-GE, 1AZ-FSE, 3S-FE, 5S-FE (Camry), 20R, 22R-E 2AR-FXE, 7M-GE, 2GR-FE engines in the various Toyota’s I’ve owned and leased through the years.
When it came to engine smoothness/balance, the 7M-GE was by far the best. Not only was it smooth (as in lack of vibration), the exhaust note was the most uniform.
I read that 2.0L is about the largest 4-cylinder engine you want to make with acceptable NVH characteristics and I would agree based on experience.
20R/22R engines were very good engines, but best driven at lower RPM as it was mostly vibration and noise past 4000 RPM.
3S-FE was also a good engine. Revved higher and more responsive than the 20R/22R, but it was the balance-shaft equipped 5S-FE Camry that I first drove in the ‘90s that amazed me as it was amazingly smooth all the way to redline.
Talking about inline 3's, would you do a feature on the GR Yaris' engine? Seems like quite a firecracker!
Everybody's in love with that thing, myself included. Actually a video on it is a pretty good idea. I haven't dug yet but I don't know how much info is released when it comes to the engine. I need to go beyond the basics and hp and torque figures. Imma go look now, I just got super curious.
Update: Vid is happening! Thank you for the idea.
@@d4a cam you splain how vacuum work like in the intake manifold vacuum lines
Thank you sir. I love how you broke this down to a nice simple explanation of each engine combo. Can't wait for the others video's to drop. Keep up the good work brother...
I can't wait for another thorough 'educational' videos about engines like this
I really love this kind of content
Thank you for providing such a great video, sir
I really want to see V6 vs VR6 😆
The complete guide I've been looking for. Thank you for sharing knowledge! Congrats from Brazil!
I really appreciate these videos. Wanna see a fascinating engine? Check out the V4 in the VFR1200. I owned one, it was awesome. The phasing and balance was a marvel of engineering.
Thank you so much for explaining the firing interval in degrees. I missed it so much, asked many people, no one could tell. Thank you!!!!!!!
It'll be fantastic if you cover some odd/uncommon piston engines like Radials, VR, W, X, U, H, Delta, Opposed, Inline 7, V3, etc. It'll take a while but should make a great series with clear episode goals. :)
I've just discovered this channel and I'm hooked. He explains it very well. 👌
nice video, looking forward to motorcycle engines!
Thank you for this amazing class!
No mention of 'your' inline 7 3JZ? :D
Same as the inline five, but with even less relevant primary imbalance, I suppose. I actually hope I hear a automobile inline 7 before i die, because they would sound awesome.
The original photoshopped 3jz was an inline 8. However, I have read that Toyota will unveil the 3jz engine as a twin turbo 4.0L v8
@@ENGINERESCUE86 wtf? that's awesom
@@philljustphill1656 yeah go do a Google image search for 3jz, and there were also a few articles about a v8 3jz.
@@ENGINERESCUE86 why dont toyota put that engine under UZ family?
Absolutely amazing video. No BS, and superb teaching methods. Kudos mate 👍
Very interesting, I love my 5 cyl even more :)
The old DKW 3 cylinder 2 stroke engines were perfect, 333cc per cylinder and firing every 120 degrees. Great performance, loved the sound!
I'd love to see a breakdown such as this on inline 7 and 8 engines. The only inline 7 I know of is in some combine harvester I think.
There are inline 7 cylinder marine engines, as well as more cylinders.
Pre 1950 they had inline 8's hell they even had v12 and v16 cars. They never made much power but provided really smooth operation and were easy to shift.
Excellent video, very informative and educational. Love the math, which gives me something to think about.
I did remove the balance shaft from my Procharger 4.3L V6 to drop the spinning mass. My understanding is that the engine was balanced internally when I went to forged internals and four bolt mains, as well with the flex plate and harmonic balancer considered. Would love for you to cover this in the V series engines because the Vortec 4.3L V6 has an even fire offset dual rod journal configuration. Many guys have built Odd Fire motors where supposedly the standard dual V engine rod journal is implemented. Interesting stuff. Thanks for what you do.
Don't leave out opposed piston.
Excellent video in all regards. The best I have seen in discussing and explaining this confusing subject. Very well done.
I love my inline 6's
And they can sound nice too.
Fantastic instruction. You are giving us all a clinic on automotive physics!