What's The Best Supercharger? Roots vs Centrifugal vs Twin-Screw vs Electric

[@GHOSTJERKER]

The twin screw supercharger on my E55 AMG spins at 23,000 rpm. Still blows my mind.

[@joonaslaakkonen8096]

Theres turbos spinning 120k+

[@counterfit5]

Heads Mess before the FIA decided to limit revs, the 2.4L V8s in F1 could have done 20k.

[@nodo7575]

That’s not anything special.

[@Aagggyy]

@@nodo7575 like you?

[@phantomstratocaster]

and your engine

[@jamesaron1967]

There is *no one* who explains highly technical automotive concepts as concisely as you while maintaining the viewer's interest throughout the discourse. Amazingly informative content. Subscribed!

[@marsdeimos4301]

Positive displacement supercharger disadvantages: weight, size, increased specific fuel consumption, noise Americans: "So, basically no disadvantages, then?"

[@kausarde4974]

But that noise tho... have you heard the demon?

[@ChadWilson]

Pretty much.

[@marsdeimos4301]

@@kausarde4974 hell yea!

[@staalcyclesecurities1423]

If u see any of these as disadvantages you are obviously british

[@JordanSVT]

The noise is awesome, look at Terminator Cobra compilations

[@Accessless]

This video was made purely to show off his supply of eggs and toilet roll over us.

[@bigbob3772]

@@FixingWithFriends Be well citizen!

[@TheFlyingHambone]

@@FixingWithFriends still no clue how you use the seashells. Lol

[@deborinquen13]

That was funny.

[@blake253]

Little did you know how big a flex the eggs would be today

[@slowpoke96Z28]

Lol

[@jamesthehandsome8582]

I just like the nyeeeee sound

[@automech4315]

Wheeeeeeeeee ❤

[@smeebs]

Haha supercharger go wrrreeeeee

[@TofranBohk]

Save some money and install a bullhorn under the hood with an mp3 of the sound. Hehe

[@nicolaandria522]

just like an old GP car, before Formula 1 was invented

[@B00h44]

Can't believe he left the whooosh to tsutututu to nyeeee curve out

[@rahulmenon6073]

4:15 did he just say apex seals .... Rotary eurobeat intesifies

[@savagetuner2404]

Did he just reference weeb garbage... Will to live decreases

[@blyndrotor]

Don't be that guy.

[@catrabbit4996]

Rotaries are the closest ICE to the perfect motor (electric)

[@iWakhloo]

Can someone please explain what that means? 😂

[@Kalvinjj]

@@iWakhloo eurobeat meme? Reference to Initial D racing anime. The comparison between rotary and electric tho no idea (at best power to weight/size...)

[@IBreiKeL]

"Hello seller, Are you accepting low ball offers? Do you know what you have?" LMAO, this is one of the best ads I've seen on KZbin.

[@EngineeringExplained]

You want to make sure you get the important questions out of the way!

[@xeigen2]

I know what I got! It's a rare color! They only made 10 of these with this color, specific trim level and with this engine. I will accept no less than 5x normal market value.

[@Kalvinjj]

@Jeronimo Stupenengo Pefaur It's unique after all, no other car in the world was totaled exactly on that specific way. It's a custom job.

[@ctrfk8740]

Hows the type r bluid?

[@donaldhollingsworth3875]

When I was growing up we always used a supercharger for low to mid range torque & horsepower. An the other hand, for mid range to high range torque & horsepower we used turbochargers. when we wanted low, mid, & high range torque & horsepower, we used a 15 boost turbocharger feeding air into the carburetors then into a GMC 6-71 roots style supercharger with a 30 p.s.i. pop off valve. We always machined a groove around each cylinder & some times around the combustion chamber on the cylinder head & used copper ringed gaskets to prevent head gasket failure when using a high boost pressure system. This probable reveals how old school I am. This was in the 1970's to the mid 1980's. At that time we were only running 9:1 pistons but now days you could run the same setup you could run 11 to 11 1.5:1 pistons because the material used for all the rotating parts have improved.

[@boolean5162]

That's the exact setup I want to try with a junkyard LS truck motor and junkyard twin turbos on inverted truck exhaust manifolds. Do the old 6-71s do a good job for that application?

[@boolean5162]

Did the turbos feeding the Jimmy act like staged compressors, or did the 6-71 pretty much just start freewheeling once the turbos came into boost?

[@donaldhollingsworth3875]

@@boolean5162 The combination of the turbo & super chargers worked out very well. It was a pain in the ass to find someone to make the intake pipes from the turbo charger to the custom made air filter housing on top of the carburetors. The super charger still compressed the air from the turbo charger at mid to high RPM but not as much. That's the reason you needed a 30 p.s.i. pop off valve on the super charger so you would not blow a head gasket or piston. And you had to play around with the timing and air/fuel mixture and the jets in the carburetors to get the performance you wanted.

[@nickyang1143]

The best is the one with the loudest whine

[@countach27]

I'm mesmerized by the high pitched whine twin screw superchargers produce

[@straight_intro]

Procharger noises are freaking sweeet

[@jvjh777]

Get a wife then :D

[@finnishfatman]

@@jvjh777 Was just about to comment something similar... :'P

[@waynebollentin989]

@@straight_intro it's not just the sound of the blower but the incredible sound you get from the exhaust. When I first ran the D3R from Procharger many years ago. My little 408 sbf sounded like it turned into a 1000ci mountain motor.

[@mannyzx1]

When you see a man holding a supercharger, you click that video.

[@Bucball]

I know I did. 😄😄😄

[@finnrattrie2015]

Jason, it’s 2:38 am, I was considering sleeping until I saw this notification. GG.

[@EngineeringExplained]

Thanks for staying up, I promise this will put you to sleep! ;)

[@ajayreddy3534]

Man's got his priorities sorted

[@cheesemons]

Didn't fall asleep. Task failed successfully

[@thomasa5619]

NZ knows where it’s at

[@finnrattrie2015]

Thomas A yea man

[@nathancoigny7386]

For Science, you should test each of the 4 superchargers on your Miata so we can see the real-world differences ;)

[@SevansVII]

At the same time.

[@Kimoto504]

@@SevansVII LOL! multi-stage boost. The whole engine needs to be titanium and all the superchargers will stack vertically or across the engine bay. I like vertical!

[@jgallo6209]

@@SevansVII quintiple charger system.... that's what I call illegal

[@boosthit811]

Gale Banks made an interesting video on the roots / screw supercharger comparison. The whipple screw type was alot more efficient putting far less heat into the charge air.

[@clipsncasts1]

I used to have a electric supercharger on my BRZ made by Phantom at the time. Very cool system. Full boost in less than a second at low rpm about 5psi. Downside was fixed speed so up top only had about 2 psi. Still gave me 4-5mph on my trap speeds

[@sketchpv3080]

I was wanting that system badly for my FRS about 6 years ago but sadly it never really took off and they stopped producing it.

[@Budzique]

Jason: "Apex Seals" Me: *Laughs in Wankel*

[@Robert-Cinque777]

Wankel

[@SupremeRuleroftheWorld]

*cries in oil consumption

[@pinger83]

Joe Jackson “Rotard”

[@BobPegram]

Top Fuel drag racers rebuild their engines between runs, I bet they rebuild their superchargers too!

[@samiraperi467]

Apex Seals are the most epic sea mammal.

[@aurik94]

For those of us who live at altitude (ie, I'm in Denver at about 5,200 ft), can you discuss how this affects NA, supercharged, and turbocharged engines? Thanks!!

[@petrolmonkey1973]

Don't you just need more boost? 🤔

[@hisheeelijah1482]

@@petrolmonkey1973 petrol monkey what an og name

[@triggrhaapi]

Altitude normalization occurs with turbos, so you get the same boost pressures (with some more lag, but not much) and essentially the turbo RPM is just higher to reach those pressures, because the control mechanism is seeking a given air pressure so the turbo spins faster and you get there. Potentially there could be more wear but I haven't heard of anything to that effect. Altitude normalization turbos are also a feature on some aviation engines.

[@flanker6282]

As a general rule, a naturally aspirated combustion engine will lose 3% of its power for every 1,000 ft of elevation gain. If you have 100 horsepower at sea level by the time you get to 5,000 feet of elevation your engine is making 85 horsepower. At 10,000 feet of elevation your engine will make 70 horsepower. That happens because because there is less air to feed the internal combustion engine. Turbocharging at elevation is an efficient way to minimize horsepower loss due to elevation and lower air density. At high elevations turbochargers compress more air into the engine cylinders making up for the lower air density allowing the engine to produce power as if it was at sea level. This extra tunability is found only in turbocharged applications.

[@Scott11078]

Everytime I get reminded on the decent hit to power engines take up I think back to WW2. In the bigger picture 5,200 feet is nothing, 1 or 2 stage single speed superchargers were good up to about 15-17,000 ft/ 4572-5181.6 meters. The system was just fine if your mission profile didn't dictate needing to get high and fast. This next bit is an awesome little test on reading comprehension and if you're an adult or an oversized child. The Merlin engine wasn't special BUT it's supercharger is what set it apart. The Allison was a great engine and in many ways superior to the Merlins, so much so folks still using Merlins in aircraft and boats use certain parts from the Allison. It's turbo system didn't fit into single engine fighters well at all and is why the P-40, P-39 and early Mustangs weren't liked in Europe since they needed thier power all the way up to 25,000 feet 7620 meters. The reason why the P-47 was as huge as it was is because of its twin turbos and all the ducting. I think there's some interesting history how the quest for power in WW2 aircraft engines gave us the performance in modern cars.

[@GaurdianAzzar]

Thank you for this video. Years back it took me hours of wading through useless forum pages and somewhat obtuse manufacturer information to learn the difference between the roots style and twin scroll superchargers. Finally, now it is concisely compiled here in one video!

[@spindash64]

That would explain why centrifugals were the standard choice for aircraft forced induction, I suppose: aircraft usually like to run at a near constant RPM, especially if fitted with a constant rpm prop that can vary torque load when power is needed instead of RPM. So the boost pressure applied to the engine is much more consistent than it would be in a car

[@ADRIAAN1007]

3:55 That finger there is why we put clear covers on moving cutaway displays.

[@winc06]

I am reminded that when VW Beetles with swing axles were flipping over while MB cars were winning races with swing axles. Execution is everything.

[@brihal6498]

Great day... Engineering Explained and Chrisfix dropped videos.

[@maxtp948]

Bri Hal nice. Gotta check out Chris next

[@automech4315]

Maybe they planed this (they are friends right)

[@BuddyRHS1965]

Yeah can you imagine these 2 as brothers at the breakfast table?

[@brihal6498]

@@BuddyRHS1965 I'd like to sit at that table!

[@richmac918]

Thanks for the video. I was under the impression that both the roots and twin screw blowers compressed air in the supercharger housing and that the only thing that differentiated them was the shape of the rotors but it looks like this is not the case. When I selected a blower for my Mustang I decided to go with a twin screw design. A case could be made going with a centrifugal blower (smaller, less weight, less costly, more ultimate horsepower) but I opted for a design that would provide more and quicker torque and I'm glad I did. In addition to having far more torque in my normal operating RPM range (2000 - 5000) it performs flawlessly and does not create the hard starting characteristics that some centrifugal blowers are known for.

[@scottb4104]

yea for coyotes the centrifugal superchargers don't really make sense imo, they're already rev-happy and need some low torque to balance out the driving experience

[@PatrickRich]

We had a procharger centrifugal with air to air intercooler on our gmt400 454 vortec. It was a good pairing as it kept pressures low where the torque was already strong and helped it pull hard up top while netting slightly better economy. Not a ton of boost, about 4.5 psi at my elevation, but it also meant I could safely run mid grade instead of premium unless it was hot or while towing. Putting 40+ gallons of premium in kinda sucks. That brick was a lot of fun

[@JohnKickboxing]

Hey, anyone here knows can we make a centrifugal supercharger spin at the max rpm for maximum boost like a turbo equipped with anti turbo lag??

[@twanheijkoop6753]

​@@JohnKickboxingthats going to be hard unless you can find a cvt capable of insane rpms

[@CameronAlford]

"whenever you want!"😂 That's gonna be so fun on your mx-5 - so thankful for the knowledge you dropped in this video as I'm in the market to buy a supercharger💪🏻

[@rmartin5285]

Just call it a Miata. Guys in Miatas.....coool.

[@stevesteele3312]

@@rmartin5285 but where I am from its called a mx-5, so just call it a mx-5

[@dap3277]

I love how you explain things, so that they are easily understandable.

[@5acred7]

That means he truly understands the topic

[@Kpar512]

Many years ago, I read in a hot rod magazine about an outfit that had designed an axial flow compressor- like a jet engine compressor section, with rotor and stator blades. They claimed to be able to pump up great pressure without adding frictional heat to the incoming air. It was belt driven, like the Roots and the twin-screw (and centrifugal). The only added heat was from Boyle's Law.

[@dannulik]

So when are we going to see you putting a supercharger in the MX5?

[@EngineeringExplained]

Fingers crossed for June install. I want to get it on a dyno so I can show before/after, and that depends on when tuning shops start opening back up.

[@dannulik]

@@EngineeringExplained Oh totally forgot about that. It's getting more relaxed here in Central Europe (Czech Republic). And car shops/services where opened during lockdown (but I don't to what extent).

[@bruderrudiger9574]

@@EngineeringExplained I m looking forward to at least 850 hp

[@SomeTenth]

@@EngineeringExplained Looking forward to that! But I heard so many stories about ND gearboxes grenading. We might see the NC MX-5 gearbox retrofit afterwards 😁

[@Conservator.]

Engineering Explained They don’t have to open up to do a private test!

[@lockjawjak]

This is not the first time I have been thinking of a subject for a few days then you drop a vid explaining it, where would I be without you!!

[@AlliterationsAficionado]

I laughed a bit to hard when you showed the Tesla Supercharger 😂

[@numberpirate]

Its funny, on about 99% of youtube videos I watch I turn up the playback speed to 1.25 or 1.5 because everyone speaks so slowly. On your channel I do not need to do that. I find how fast someone speaks about technical things to be directly correlated with their intelligence. So good job!!

[@user-retrofit]

"Whatever You Want" "Whenever You Want" cool

[@wyndhamcoffman8961]

Yeah, and no parasitic losses from a belt drive.

[@Thebadbeaver9]

Wyndham Coffman you need energy from somewhere

[@handlealreadytaken]

I’ve had both the PD and centrifugal on cars. All of I have to say that the 2200R on my C7 put out over 1000whp and still made max torque at 3500rpm and held to redline. If you mashed it, it would be like flipping a light switch if in the right gear. The PD blowers where much easier to modulate but they also lit up the tires from a stop.

[@TriAngles3D]

Great video and info. Wish I could have viewed it back when I was a kid, 40 years ago. Centrifugal type superchargers are dynamic devices as opposed to their constant output Positive Displacement counterparts such as the Roots. Centrifugal type simply convert velocity energy into pressure energy via diffusion (learned that way back from Hugh MacInnes). So you speed up the air to very high speeds and then rapidly slow it down and pressure builds (Kinetic energy 1/2mv2). That is why the output is non-linear. For the roots and screw comparison you mentioned, both push the air out. Internal compression that you mentioned? Probably not the right way to look at it. Both gulp and slap the air hard in the lobes/screw which induces heat, difference in adiabatic compression efficiencies.

[@calmec87]

In the arrangement described at 0:45, most automotive professionals refer to that as an "aftercooler". Technically speaking, most of what we call an "intercooler" in forced induction cars are actually aftercoolers. However in common jargon, from boosted muscle cars to Detroit Diesel commercial engines, the air-to-water cooler after the blower has typically been called an aftercooler.

[@ghostbuddy3106]

I'm beginning to think that i just simply couldn't live without this channel... 😂🤣😂

[@michaelparke5770]

I am so glad none of my Professor.'s explained things like you do while I was doing 4 years of Electrical Engineering School!

[@hightttech]

Love your quick and concise style. My how times change -- i remember when two Holley DP on a 6-71 was the gourmet setup for our hotrod customers.

[@BuddyRHS1965]

Ahhhhh the double pumpers, those were the days. DP's and big blocks.woooohooooo

[@sfbfriend]

Centrifugal and Electric superchargers are using a mixed flow impeller. I am familiar with two types, mixed flow and axial flow. Axial flow looking very much like a typical fan.

[@ImNotADeeJay]

0:02 that supercharger looks like at 1980s camcorder

[@rockcrawler3119]

Hal I am about to piss myself laughing at that comment. You nailed it sir lol!

[@stevesedio1656]

Nicely done. A few additional points. Superchargers (and turbo's) heat the air, partially due to compression, partially due to inefficiency. An intercooler eliminates most of the inefficiency effect, and requires less power from the crank per HP generated. Cooling, allows moving as much air, at lower boost. The twin screw and centrifugal have internal compression, so generate the heat of compression even off boost. With high boost (10+ PSI), running the bypass through the intercooler is a good idea. The negative to the roots was efficiency, ~55% compared to 70+% for twin screw and centrifugal. That changed with the 160 degree, 4 rotor. Positive displacement (IMHO) are better in small displacement engines, increasing torque at low RPM. A centrifugal makes a high revving engine even more so (was that true on your S2000?). Driving a centrifugal off the crank through a CVT to flatten the boost curve would be interesting. The electric drive is usually on or off, so provide more boost at low RPM than high RPM.

[@stephanM5]

Thanks for clearing up the difference between roots and screw superchargers, very informative and interesting. Now all you have to do is comparison between superchargers and turbochargers and the efficiency each has or doesn't have ie the parasitic effect on horsepower and the fuel wasting on both a supercharger vs a turbocharger. Looking forward to seeing how your roots performs on your MX5.

[@isakjohansson7134]

Though twin screw superchargers actually spin the same way as the roots blowers

[@dallaswood4117]

I had an 03 cobra convertible with a 5.0 for motor sports block Ford motor sports cams aftermarket exhaust ported and polished supercharger with smaller pulley that thing absolutely howled what a fun car

[@RVecc]

For some unexplainable reason, I suddenly feel like I need "WHATEVER I WANT!"

[@MartinBalle7]

My vw golf 6 1.4tsi from 2008 uses a twincharge system (turbo and a roots supercharger with a magnetic clutch ) 🏁

[@ElliottAlvis]

The REAL question is: which one of these will make the biggest power bump for my Prius?

[@EngineeringExplained]

You're definitely going to want all four.

[@jorge8596]

@@EngineeringExplained And a turbo! pentacharge that thing!

[@ChadWilson]

@@jorge8596 , don't forget to include a compressed air tank that can be used to spool up the turbo faster to avoid lag.

[@kamiodd2873]

@@EngineeringExplained hahahahaha.

[@soundseeker63]

Don't forget NOS!! :-D

[@armedprophet3321]

Dude I have been watching you for years, you are super incredibly intelligent. Any car company would be so very fortunate so employ you. If you are able to do this with the limited resources that you have at your disposal, the sky would be the limit if you had backing of a major auto manufacturer. Good luck

[@denttech2515]

When I can't decide what to watch, Engineering Explained is usually a safe bet

[@epistte]

In college, we built a 1.6 liter I-4 16V with an electric supercharger for a low-end boost and a regular exhaust-driven turbo for high boost. The electric supercharger worked well for eliminating turbo lag and when the engine was over 3500RPM it shut off because there was sufficient exhaust flow for full boost.

[@alfredotovar8984]

Love this video Jason! Would love to see a video in the future about the pros/cons of a 5-valve OHC cylinder head! Saw a video recently about the Toyota TS010 and it was claimed that this setup put out more power in the high AND low rpm’s, and it was the more efficient, I would love to see something about wether it’s true or not, using that engine and the 4A-GE 4-valve and 5-valve for comparison, keep up the great content thank you 🙏🏼

[@davidmay5338]

Don't know how I stumbled onto this guy's videos but I am now a huge fan.

[@2_2_4_3]

5:59 you made my choice for me. 😄

[@mobilemowers]

Cleatus did an electric on a Cobalt got 20-30hp on his dyno. Instant boost. He is now using centrifical on lastest project.

[@framegrace1]

No Wolkswagen G20-G60 "Spiral" supercharger? That is an interesting one to mention, maybe next time.

[@xaytana]

No Rolls-Royce rotary supercharger, that was used on their diesel rotary, either. Also the 'spiral' supercharger is called a scroll-type supercharger, or G-lader. Also no mention of sliding vane, axial compressor, or pressure wave superchargers. There was also no mention of variable ratio centrifugal superchargers. None of these were mentioned because of how commonly available they are from OEMs and aftermarket companies. Roots, twin screw, and centrifugal are vastly more common than any of the other ones mentioned here. I'm also not really sure why electric was thrown into the video, as that's a drive type, just as exhaust driven and mechanical (belt-, chain-, gear-, and direct-) driven are the other two drive types. A better video for electric to be shown is when comparing supercharging, turbocharging, and electric-charging on the same centrifugal compressor.

[@moi01887]

Even more interesting: I work with a guy who has a g-lader, in use on a car, that has not failed! Maybe the only one. ;^)

[@Kalvinjj]

@@xaytana whoa that's the 1st time I've even heard of a scroll compressor as an ICE supercharger. I've only known them from heat pumps/air conditioners. That Rolls Royce diesel Wankel was pretty much a series Wankel engine when you think about it wasn't it? One chamber compresses to the other one where the combustion happens, like half an engine (if not more if it was bigger) just for the boosting. I can understand why he added the electric one to the video, probably just to clear up the doubts about what it actually is.

[@hallkbrdz]

They work very good, as long you replace the apex seals and you keep the small belt in good shape. If not.... bam. Of course I had the same problem with a BBM lysholm (twin screw) supercharger kit and our crappy roads. Those very tight tolerances didn't like being jarred around. Just one bad one at the wrong time and - crunch. Expensive lesson. I ultimately gave up and just changed the whole 8v engine out for a 20v 1.8T. No more supercharger problems, more top end, and much better mileage when not at a track!

[@Kimoto504]

@@xaytana Torque curve tells all as far as centrifugal is concerned. He's already given it away here. Electric has flat curve because it doesn't have to follow engine RPM. turbocharging and supercharging do.

[@RightWingNutter]

My one supercharged vehicle is a Toyota Previa minivan. Roots type, air to air inter cooler. It has a waste gate that limits the boost to 6 psi above sea level, or about 20 psi. The nice thing is that the waste gate maintains that 20 psi as I gain altitude, rather like an aircraft’s turbo compensator. I get the same performance at 11-12,000 feet as I do at sea level. My V-6 RAV4 is faster at sea level, but above 5-6,000 feet the computer forces the engine to spin faster & shift at higher rpms to maintain performance. Eventually the 2.4L Previa keeps right up with the 3.5L RAV4.

[@leslienordman8718]

Thanks for this! Me? I like turbocharging (actually, turbocompounding) a lot better than mechanical or electric supercharging, but that is because I am fixated on efficiency. I just can't stand the thought of all that energy being thrown away, down the exhaust pipe! I would much rather recapture that energy and use it to move the car. I appreciate your openness to all things engineering. :-)

[@gort8203]

Has there ever been a turbo-compound automotive engine?

[@juliojonathan8348]

Gort The closest thing I can find closest to turbocompounding on automotive application is Garrett e-turbo. They installed a KERS-like mechanism in between the compressor and exhaust side of the turbo to charge a battery, storing energy for spooling the turbo in similar manner to e-superchargers Jason explained. Buuuuut that’s just me googling for about 10 minutes so I could’ve missed a thing or two here.

[@Conservator.]

Julio Jonathan That sounds like the current MGU-H if F1 (motor generator unit - heat). What’s a turbo compound?

[@BlueDually4x4]

@@gort8203 The old two stroke Detroit Diesels ran an engine driven blower and exhaust driven turbo charger. The 6-71 blower used on hot rods is the blower off the 6-71 two stroke diesel.

[@leslienordman8718]

@@gort8203 Great question! First, before I get to that, I want to define "turbocompounding". The turbocompounding I am speaking of is not a series of turbochargers, each pressurizing intake air and handing it off to the next. Turbocompounding is using the energy in the exhaust gasses to not only pressurize the intake air, but to also provide more power to the engine. Either the power turbine or a second turbine is connected to the crankshaft. The Wright Cyclone R3350 radial aircraft engine used turbocompounding to make way more horsepower than just with turbocharging alone. My father worked on R3350 engines for the airlines: the turbocompounding system was simple and very reliable. It was just a set of three turbines that were spun by the exhaust gasses and were geared to the crankshaft. Now, as far as I know, turbocompounding has been successfully used in aircraft and in over-the-road trucks, but not in cars.

[@billshiff2060]

You have the screw marked as rotating opposite to the roots but they actually spin in the same direction as a roots. They carry the air around the outside the housing and compress it at the bottom.

[@Angelum_Band]

7:27 The Humble Mechanic at work lol.

[@iggysfriend4431]

It's a pity you didn't include the VW G-ladder supper charger as fitted to the VW Corrado and Polo.

[@christianaugustin7047]

"Do you know what you have?" 😂😂😂💀

[@EngineeringExplained]

Real non-bot only buyers please. I KNOW WHAT I HAVE.

[@kamiodd2873]

:D :D :D I was laughing harder than I should have at that one, too :D :D :D

[@bradleyland]

I love the low key humor you've developed in your videos, Jason. Cracks me up.

[@Lostsage01]

I can’t wait to hear your thoughts on the roots style on your MX-5 vs the centri on the S2000 👍

[@HappyHarryHardon]

Roots or screw?

[@Lostsage01]

@@HappyHarryHardon 6:00

[@_..-.._..-.._]

My idea that anyone is free to use is regarding using a hybrid vehicle’s electric drive (traction) battery to run an electric centrifugal supercharger. We have smaller and smaller engines using turbos, but they’re complicated and hard to install on modern cars. My idea could be more of an aftermarket product to make something like a Prius way faster.

[@TangyWasabi]

Roots, twin screws and their differences have always confused me. They still do.

[@Myth1cxSniper]

One compresses air and keeps lower temps. The other doesn’t.

[@andrewb2476]

I had a beautiful 2005 Mini Cooper S. It was an awesome car, sounded nice, performed pretty well, drink fuel yes. Good video, followed your channel for years, your really smart guy and good at teaching people about mechanical systems on cars.

[@ChuckyDoll79]

I still have mine (2005 R52S) for over 13years. It's expensive to maintain for all those years... but, there is no substitue for a 1st gen MINI Cooper S.

[@OntologicalQuandry]

Search for "Coltrane's Planes & Automobiles: The Supercharger" The famous Scottish comedian did a series on engines and that one talks of the origin of the supercharger. Interesting was the Germans had a clutch that engaged the supercharger when the driver demanded it compared to the Brits having it always connected. Obviously, this came out of car racing and into fighter planes...

[@chrisxl5152]

My mustang gt has a centri on it. Because It already has great torque stock, waiting till 2800 rpms for boost to kick in isn't really a big deal. It has 450 tq and 510 rwhp after the install. It's more than enough for the street. Definitely would go with roots for drag racing.

[@hyrges]

Put a supercharger on the Crosstrek :D

[@felixbeutin9530]

naaah mate

[@ALMX5DP]

Felix Beutin why not? A more powerful Crosstrek would be epic!

[@LeonAnilom]

It will still have a CVT

[@felixbeutin9530]

@@ALMX5DP is it necessary ?

[@7spower998]

This video will help the DIYers

[@NICK-uy3nl]

He left out ELECTRIC TURBOCHARGER. The compressor is run by an electric motor, when the main turbo is up to speed and able to provide its power boost, the electric system running the air compressor is shut off. When the accelerator is pressed, the electrically-powered compressor instantly spools up to provide boost. When the turbine reaches a pre-determined operating speed, it’s coupled to the compressor to provide boost from the engine’s exhaust gases. It is the most efficient of all air charging systems. Garrett and Honeywell will supply electric turbochargers to car makers. Audi, Volvo, BMW and Mercedes have all announced electric-turbochargers for their next-generation models.

[@spindash64]

Also, i don't know if this one has been used much in CARS yet, but there's a very similar concept called the TurboCompound: a turbine takes echaust gas energy as youd expect, but it can return this energy to the drive shaft directly rather than running its own supercharger. An electrically turbocharged Hybrid vehicle would likely be the same concept, but with the added bonus that the motor gives supreme torque at low rpm, compared to the typical turbocharged ICE

[@siraff4461]

MX-5 vid Jason "its got enough power". This vid also Jason "here is the supercharger to go on it". Hmm.

[@Michael_Lorenson]

Yeah, it's a dilemma. The MX-5 has enough power, just not enough so that it can't benefit from having more. But there are very real downsides to what Jason is doing. It's not cheap, it adds weight on the nose of the car, it puts additional stress on EVERYTHING related to making the car move, and it starts you down a path of 'needing other improvements to cope with the additional power'. So the smart thing to do is leave the car alone, and enjoy it for what it is. But that requires a level of self-discipline that must be beaten into a car enthusiast, over decades of wasting money and ruining perfectly good cars. Ask me how I know...

[@Reploidx9]

@@Michael_Lorenson Do tell good sir, how do you know?

[@barryinkpen6026]

I had a roots style supercharger on my 1994 Miata and it was outstanding! Great drivability with power on demand.

[@Conservator.]

Could the engine handle the extra power? How long did it last? Just curious.

[@oxdudepoege]

What was that crazy engine in the beginning? Two sparkplugs but only one huuuuge Valve.

[@EngineeringExplained]

Hellcat 6.2L V8

[@dewiz9596]

Any aircraft piston engine,. . .

[@ASJC27]

@@dewiz9596 Many aircraft engines are 4 valves...

[@oxdudepoege]

But how does this even work with just one valve? That's a video for itself worth.

[@southfloridanick]

oxdudepoege the exhaust valve is just not visible from this angle, it’s directly behind

[@deandavid9737]

Previous Mercedes Benz vehicles like e55 amg, sl55 amg and all the Kompressor motors.. nice video. I am a mechanic with knowledge of most of the concepts you discuss but love your videos.

[@Meatballxl]

dont tell me what to do "I DO WHATEVER I WANT"

[@ahmadhackett7383]

"Whateva, whateva, I do what I won't"

[@GaryMcClureCHAMST]

The forces generated by a Turbo charger in a a high G corner, say 3-4 G.'s is phenomenal, way beyond anything commercially available. Still though so awesome at 3 gees...

[@captainmerica2498]

The one that does a loud REEEEEEEEEEEEEEEEEEEEEEEEEEEEE

[@DennisMurphey]

You did not mention cost and drivability. I have had Roots, Centrifical and Twin Screw in different vehicles. All Corvettes. The cheapest and actually most fun was in a 981 Corvette with the Centrifical mounted up on a Build Small Block Chevy with a 4 Speed O.D. trans and 3.31 rear gear. Low speed was OK as I had the lower Gear and a good Torquey Cam. But about 3,500 it would just shred the tires off the rims. I am now thinking of doing one for my Current ride, a 2014 Corvette, Z51. But i want to ensure the pistons are strong enough. As always a great lecture and diagrams. Thank You. Dennis in Virgnia

[@bjsmithycal]

Had to yell at my kids to look away when you put that egg in the toilet paper roll. I don't even have kids.

[@boblinden406]

Ideal flat boost curve of the electric driven centrifugal overlooks the surge point of that device, which will require either a bypass/blowoff system or a compressor speed/load strategy. Give me PD tip-in torque any day.

[@1u5t1n]

I dont care what's the best, they sound 10x better than any turbocharger. The end.

[@ace1usmc]

There's a reason why top fuel teams use large, teflon lined roots blowers. Same reason why I use them on my Camaro and my Chevelle. Insane, instantaneous power across the entire rpm range.

[@robertgamble7497]

I think Tesla has the best SuperChargers!😎 The other SuperChargers have too many moving parts, and use combustible liquids.

[@prestonedmonds4128]

I love my centrifugal blower the way it works. It helps keep traction at lower rpm and builds power as you continue down the track.

[@wonderbreadjumps]

Twin screw superchargers have eggs.

[@takeiteasynacho]

Cvt centrifugal supercharger ratio high for low end, then scales back as needed for high rpm. Don’t use belts but that cone style you talked about in that one transmission episode a while back

[@kennylast2565]

2:28 Reminds me of HowToBasic lol

[@awertyuiop8711]

“How to build a supercharger”

[@adrianolvera4038]

Jason is... How to basis

[@817Keith]

Great video and explanation of how each type of supercharger work

[@karlkukk7080]

Uploaded 10 seconds ago

[@an51r]

Thanks for keeping the ads concise and in time with the video. Cutting to ads and mixed volume/tone ads get muted, yours were very tolerable and it's great to see companies interested in sponsoring your content. It's some of my favorite to come home to after work!

[@capitaldiaz3749]

It’s been a while since I last saw your channel, gotta say your drawings have gotten better since the old days! Great content then and now!

[@EngineeringExplained]

Appreciate it, thanks for coming back! :)

[@carbide1968]

I had a vortech supercharger on my 1990 formula 350 firebird and gained 2 mpg on the highway. As far as having to spool if up for power it was no difference in it compared to a roots type, they both worked off the crank. My engine hit 6 grand in a second or so when i mashed it. I never noticed a delay and boy did i love the sound of the supercharger. Wish they had a bolt on roots type for my little 2013 dodge dart, it's lacking power.

[@RawTopShot]

I had a Marshall Wade 750cc roots type supercharger on my 1275cc Austin Mini 😁 The charger started it's life as a cabin compressor inside a British military 1954 Gloster Meteor jet plane. The air entered the charger paddles from above laterally rather than longitudinally in those screw type compressors, the air exit was on the opposite side of the housing and bolted directly to my custom intake manifold ( no air charge cooling ) I used a 2" SU carb originally off a Rover SD1 ( 3.5L ) it was forever icing up 😂

[@James-eg3nf]

Thanks for the clear, intelligible explanation. I have to admit I didn’t really know the differences between these, but now I can sound like I know what I’m talking about with my gearhead bros.

[@joshuathomasbird]

screw supercharger is'nt really compressing either though since the size of the cavity isn't changing; consider what would happen if the beta angle of the got higher the closer to the exit, where the size of the cavity _would_ get smaller. These are in effect both just pumps; if there's a restriction in flow after them, that's where the air is being actually compressed.

[@kurtbilinski1723]

I had a TRD supercharger on my Toyota, installed by the dealer. In 100K miles, the bearings went out on it twice, needing expensive rebuilding. Yes it was awesome when it worked but was an overall disappointment for reliability. Meanwhile my twin-turbo Ford F150 just passed 130K miles, so there are many aspects to supercharging vs turbocharging, as it's not simply a black and while yes/no sort of thing.

[@EdgarRenje]

In Germany, we differ between compressors and (exhaust) turbochargers, with the last one, as the name suggests, is driven directly by the exhaust stream, not by the engine belt. Electrically driven superchargers are a new, independent category.

[@musicman7982]

Terrific. Now how do I minimize the lag on my twin turbo Bimmer?

[@russellbradwell8910]

He needs his own show on mainstream. I love engines and don't know nothing about them. But I understand him He breaks it down to dummy terms for folks like myself.

[@christenn32]

I will be installing a TVS supercharger from Edelbrock this weekend. I'm excited to see what it can do!

[@saccaed]

I wonder what stops anyone from making something like a CVT centrifugal super charger. Something that translates belt drive to a more constant speed throughout the RPM range. Seems like it could be good for economy too being able to modulate the supercharger rpm based on throttle or setting.

[@colincrippin375]

Interesting idea

[@af235]

this video never gets old. i think this is my 4th time watching the entire thing