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Almost 11 minutes of video and NO mention whatsoever of Mazda’s most powerful new engine.

Never underestimate the power of the spinning doritos.

Yeah the rotary engine is pretty cool, I had a FD rx-7 back in the day, my brother also had the FC savanna. We became some of the best racers around, we even made a race team called the redsuns, and dominated many mountain passes, it was going great until one day we got beat by a tofu delivery driver. I will never forget. oh wait.....

My father bought a 1971 rx3. Engine was apart in a box. How he figured it out still amazes me. I drove it for two years. Two carburetors and two distributors. Timing was critical.

Had a 91 RX7 I loved that car, learned how to work on it because not many mechanics new how. That's when I found out how great Haynes books are

Nothing here about a new Mazda engine or the most powerful engine ever made...

Took apart and reassembled a rotary engine out of a wrecked RX7 back in ‘86/87 in high school auto class. Still can’t figure out why these weren’t more popular. Cool engines. 🇨🇦👍🏼

The Liquid Piston engine (inside out Wankle) looks promising.

I've read 6 years ago that the CEO of Mazda made it clear that as long as he is the CEO, the rotary will not go away

Feeling robbed... came here for a new and improved rotary, especially after that glory montage with the past, only to hear about a small something to extend electrical engines...

The only thing I learned is that I absolutely NEVER want to watch another scotty kilmer video again.

The Achilles heal of the rotary is the seal. When you find a material strong enough for that problem is solved.

These voiceover videos are amazingly high quality and you’re voice is perfect for it, thank you Scotty!

An early commercial shows a kid on a pogo stick: "Piston engine goes boing boing boing, but the Mazda goes Hummmmm."

Thank you for mentioning my beloved NSU. I had a non rotary 1959 nsu prinz, which was unique in itself. 2 cylinders that both go up and down together in separate cylinders but only one side fires per revolution via twin bosch ignition coils. Vibration is controlled by a central counterweight. No belts, the ohv cam hemi aluminum head is driven by eccentrics. Air cooled. 36.8 cu in, 20 hp @ 60 mpg. Fill up of the crankcase was 1 qt. Gas tank was 6 gallons. 1090 lbs, 123" overall, 78" w.b. seated 4

Inventor was a creative genius who was thinking way outside the box, but how this design doesn't vibrate like a random orbital sander, I can't understand. Incredible.

That was the best presentation and explanation of the rotary engine I have ever seen. Nicely done sir.

Had an Arctic cat with a 2 rotor...Man that Sled MOVED

Great explanation of rotary engine, almost zero mention of a "new" rotary engine. Sorry, thumbs down.

I remember building a 4 rotor rx7 with my dad, and then I woke up

My old auto mechanics teacher back in high school used to call the 4 cycles of the engine suck, squeeze, bang, blow. Because he knew it would crack up our teenage minds. And it did we laughed our asses off every time he said it. I miss that dude, good ole Mr. Akers.

It's a shame they didn't do more development on this engine. A good friend of mine had an RX-7 in 1998. What an awesome ride it was. That thing would move!!!

You can buy an 'off the shelf' 750hp 13B Turbo rotary from a few of the performance places here in Australia, the power to weight ratio of a boosted rotary is truly incredible...

"Apex Seal". Get to know this term. You will see it A LOT on car repair receipts if you own a rotary engine.

When i hear Rotary one thing comes to my mind : 787B

My Grandfather gave me his 1987 rx7 with less than 40k miles in 1998. Thanks Gramps RIP 🙏❤

It's crazy that the awkwardly named but super-promising free piston linear motor generator isn't being put in hybrids instead of a rotary, with it's wonderful simplicity and so many advantages if the internal combustion engine has a future then that's probably it, but it's going almost ignored.

I didn't even have to turn down the volume for this one!

Rx-9 incoming 😁

I had a little 1985 RX-7 I bought for $900 in high school. Was a blast to drive. Handled awesome. Was fast enough for me to have fun with but slow enough that I didn't die.

At the scrap yard I saw an old Mazda RX2 get pulled in. It was complete. A man I worked with had a courier that had rotary power.

Love the new vids. I been watching for a couple of years, great knowledge and good, informed opinions. Nicely done, you have a gift Scotty. Priceless experience, I've learned so much on this channel. Without getting grease on my hands!

Brilliant work. I've been trying to explain rotaries all my life.

"Rev up your rotary engines!"

Go Scotty - Go Scotty - Go Scotty - Go ! I had 2 Mazdas in my life and the old lady had a 626 when she was working, none of them were rotaries but were all damn good cars, Merry Christmas Mr.Kilmer! Now ring that bell !!!

I had a R1 with an R2 engine that had been modified for stock car racing. I rebuilt it just out of curiosity. It was amazingly easy to work on, and the apex seals didn't cost much. It was a tremendously fun car to drive. It was the muscle car era, and I got a kick out of blowing the doors off of guys who thought they had a hot car. The brakes did not match the engine, and I got tired of replacing shoes. It definitely went much better than it stopped.

I’ll always want an RX7, such a beautiful car 🥰

I hope that rotary engine will never die. F'ing love RX-7s

These little rotary engines are nuts if you get a good one, went for a ride in one back in the early eighties and it was way to fast for the size of the car.

I was a Mazda salesman in 1991. I couldn't understand, then or now, why Mazda didn't put that little jewel in the Miata! My only guess is, that RX-7 sales would've tanked, and the RX-8 never would've existed. SO??

I like Mazda's idea for making the rotary engine a range extender for electric vehicles. If they fit it with direct injection, it can have higher fuel efficiency and power. Since the combustion chamber is separate from the intake chamber, the injectors would stay clean for a longer period of time. Direct injection makes more sense on a rotary engine vs a standard combustion engine.

Loving these "high production videos", keep em coming scotty

Scotty knows mechanical engineering in details

I have a 2004 mazda6 wagon bought 3 years ago with 162,000 miles. Only just changed starter. Runs and runs.

Next week Scotty Kilmer: Rotary engines suck!!🤣

If Mazda makes a new rotary sports car, I’ll definitely buy one

i had a rx-2 rotary 2dr sedan and i loved it, i was doing 85mph on a steep upgrade and it just screamed

My mazda after 145k miles needed a new seal rebuild pulled it apart and the rotors were crisp smooth, it's mainly because these engines require constant oiling. Soo once my rx8 (2004) gets a new seal pack I'll get running for another 100k qnd it's been damn reliable.

I remember building an airplane with my Dad long time ago out all the engines he went with mazda rotary the output is insane... 👍😎

*The Takahashi Brothers have entered the chat.*

There is an inventor in Australia who converted a rotary engine to run on compressed air. It's used to power tugs in a warehouse and has promise in areas where electric sparks can be hazardous, like in mining.

You know the Wankel Rotary would be a perfect engine for a sports motorcycle. Seems much more suitable than a inline 4.

The rotary engine makes sense as a generator, as it does not need the power bands that a directly connected engine would have to have. All it needs to do is run at a certain RPM.

As a young man in the 70's a good friend and I attended a couple of 24 hours of Daytona races. Back then we were able to take our sleeping bags into the grandstand area and spend the night. What I remember about the Mazda's is they seemed to be the loudest cars on the track.

Chicago, Illinois USA - we had a "little blue Mazda" hatchback for years - it ran through the deepest snow and coldest temps

My first car was a 1972 Mazda RX2 4-door. That thing could keep up with a Dodge 440 Magnum! It was fun to drive and sealed my appreciation for compact sedans.

There's no oil sump in a rotary engine; instead, there's an oil injection system that shoots oil into the chamber on the intake stroke. That's shat leads to abysmal emissions numbers. Another bad aspect of the rotary is differential heating: the intake half of the engine is always quite a bit cooler than the exhaust half. This leads to problems keeping gasketed surfaces from leaking. Despite all this, it is a fascinating engine with only three major moving parts (two rotors and the eccentric main shaft). I've always wanted to install one in a drag boat.

I had a RX3 in the 70’s. It was powerful and fast. My brother bought a RX7. He could outrun Chev Nova 396 all day!

How come the youtube algorithm waits until you are supposed to be doing your homework to recommend all the best videos

Thanks Scotty, that was very informative. I helped a friend sell his RX7 he was never so glad to get rid of it.

Fun fact the world's fastest rotory engines ran 6.06@233mph in a rx8 called loquito killer from PUERTO RICO

Scotty: In the 70’s I drove a Mazda Cosmo for sales work all around the eastern USA. It did a great job and was fun to drive. When Corvettes laughed I had fun smoking the (up to ~ 90-100 when they finally overtook me. Of course I was loaded with suitcases and engineering samples, so it was hardly a fair contest. Mazda gave me an engine transplant at 80,000 miles. After another 20,000 miles I sold it for what I paid for it. My family drove an RX-3 and RX-4 during those years, too. Yeah, I had to maintain all of them myself because the Mazda folks just couldn’t set up the triple ignition system (leading, training and high speed). Tuning the carburetor and afterburner was done by smelling the exhaust. When the gas smell went away it was tuned right. Good car! Didn’t owe me. Nickel!!!

More powerful than the Chrysler turbine engine?

When I learned about the rotary engine 35 years ago. We were taught that the motor didn’t last for all same reasons you pointed out. I didn’t see these things being worked out, and doesn’t seam they have today.

My 2nd car was a '72 RX-2. Incredibly smooth and fast top end. Didn't keep it long though. The engine seal failure became a common problem and very expensive to fix.

I remember being in auto shop class in high school and some teacher had a Mazda RX-7 with a rotary engine. He brought it in so we could check it out. Didn't understand why it didn't get mass produced until now. Scotty did a great job explaining the important things one needs to know about these engines!

I studied electronics technology through a correspondence school in the USA, in the early 70's. As an extra, they had a newsfeed on latest inventions on electrical, electronics and mechanical advances. The Wankel was already invented at the time and I read about it. All the advantages over the conventional piston/crankshaft was already so obvious at the time. That was decades ago and I am 68 now, still wondering why and how the heck isn't it still commonly around as the solar-panel which was also already around since my teen days?

I think I had 6 Rx7s and none had any major issues with the engine to well over 100k-if at all. In fact the most reliable make and model I've ever owned over ~40 years of buying low-milage second hand cars.

How does this man pump out so much content? Scotty is a real workhorse.

Fun fact: Toyota is actually trying to buy Mazda engines & Transmissions from Mazda .

If someone could come up with new material for apex seals it would change everything about the use of rotary engines.

I can’t wait to see what they come out with next…I hope it’s bulletproof but I also kinda like working on the car.

I love my 1mzfe. 20 years old and still runs like a dream 😊

Rotary engines suck fuel like a private jet. Don't forget to mention that part.

The animation in the video is out of this world ! Well done.

i had an rx 4, thing used to eat 5.0 mustangs for breakfast, but i was always rebuilding the carbs oil injectors, and the oil cooler seals always blew out. funnest car i ever owned.

I bought an RX-3 in the late 70s for $300 because the Mazda dealership told the owner, over the phone, the cost of replacing the clutch and pressure plate, but I fixed it for $7 because it only needed a clutch slave cylinder repair kit and a little hydraulic fluid. I drove it for a while and gave it to my little brother who loved that pocket rocket until a woman ran a stop sign and parked her Volare station wagon in the passenger compartment. One of the most fun cars of my lifetime!

My grandfather Was a master machinist and a engineer that knew and worked with Felix Wankel He actually helped design and develop the Rotary engine with him...My grandfather then moved to America right before World War II and became a master machine for the New York Times working with printing presses,Sometimes going to multiple cities in the usa building them.. I owned a gen 2 Mazda rx7 ,Was my second car, I sold it in the mid 90s ,,, i Still Miss the car.

beautifully explained. im an automobile engineer and always wished that vankel engines deserved more research and development. hope they develop the technology for better emissions and lesser wear.

Big oil: "The rotary engine may be dead" Big Hydrogen: "Hold my beer..."

I love the Rotary motors. Thanks for giving me history I didn’t know!

Great video on how a rotary engine works, had 1980 Rx7 12a factory 4spd All original 224,828 miles before sides seals went out, after setting 4bbl carb I squeezed 24mpg out of it

To change the subject I'm still waiting for the Datsun 510 return. Yet they pulled the plug on that rear wheel drive small sports car.

It has a volume of 1.3L, but really this is the equivalent of a 3.9L piston engine due to the geometry. They perform all phases of the stroke at the same time!

Love my Fd and Fc rx7, and yes I recently added some aftermarket apex seals

Rotary engines are nightmares, they consume oil like Home Simpson consumes Duffs beer.

I had no idea that Chevy tried to do this to the Vega. LOL. I assume they planned to leave out the apex seals to save money.

The reason that rotary never took off was 1) because the RPM needed to get the torque required was incredibly high and the oil could not be forced to go to lubricate properly, 2) the amount of fuel needed to keep the revs up was very uneconomical.

I was really hoping for a resurgence of the rotary engine... with improved life span, stronger seals and with the environmental issues fixed.. Eventually, fewer moving parts should translate to improved cost and fuel efficiency. (One would hope)

Had a '89 RX-7. One of the most fun cars I've ever owned. The unique sound it made was cool.

Someone was getting really popular in our area. Him and some guys where basically working from a garage. Said they invented a revolutionary engine and where working on it to perfect it or something. And then they just disappeared

I think I might include the lack of the entire valving system, with it's many many parts as another one, even moreso than the crank, especially when push rods, rocker arms, etc were included. This one opens ports like a 2 cycle piston engine, but doesn't use all the downside piston pressure to help flow air/fuel. You've got a lot of statistics all screwed up in here, especially if you are talking about Rotaries in the 1979 and up time frame. Novella follows: RX7s typically went 130k to 150k miles, even with very hard driving, so your 60k average service life, for later rotaries is WAYYYY off the mark, fairly typical for American V8s of the time, though the Japanese engines typically went MUCH farther. On earlier rotaries, rotor seals DID have lousy life, about the life you stated or a bit less (50k, IIRC), but Toyo Kogyo put a couple million man hours, as I understand it, into redesigning them (materials changes, sprung multiple piece apex seals, to accommodate short side end wear much better, etc), as and they got MUCH better after that. There was certainly no 'nail in the coffin' mid 70s, except with American manufacturers. The RX7 came out in 1979 and I think it outsold EVERY other sports car combined, at one point. Not exactly 'in the ground' yet. Reading junk, and actually living it (meaning an enthusiast) often provide very different 'histories', one real, and one often contrived by marketing people. Remember the 'piston engine goes boing boing boing, but the Mazda goes 'hmmmm". That one was actually funny, as are a small percentage of others. Some YTers are doing vastly better jobs promoting products than the pros EVER did. :-) I have a piston driven TL I'm currently driving with 311k miles on it. It has had NO engine work other than valve cover gaskets. Still burns no oil, oil still honey colored, inside absolutely pristine except for a very light discoloration staining that wipes off with a finger. I have pics when I did the valve cover gaskets at 309K and I can take a current pic of the odometer if you are having any trouble buying this. My older Camry has 275, my son's corolla is right at 300, etc. And several of these (not the TL) were not exactly well cared for. My first RX engine went 135k to an oil leak on the upper transfer passage, at that stupid oil ring that is a common failure point. Still ran great, I'm certain I could have put just seals in it and it would have gone MUCH further, but went to a four port and the hop up path at that point. I didn't realize all the American manufacturers that built cars using them. My family and I owned a few RX7's, great car, tons o' fun. I did some hop up work on a few of them, street porting, higher flowing dual carb Webers, intake, headers, hardened rotors, welded and staked stationary gears, high flow oil pump, and several etceteras. Made a 250 hp normally aspirated 13B. Very simple engine to work on. Also, driving the RX VERY easily, on the highway, I once obtained over 30 mpg, but that is not remotely normal. Specific fuel consumption is a good bit higher than a typical piston engine of the same output, but I think I averaged about 17 mpg with normal driving on a 1984 13B. If you drove them hard they got much worse, just like every other ICE out there. One (silly) example of exceedingly different scale motors was where Top Gear pitted a lambo (or something equivalent, some supercar) to a Prius, requiring the Prius to run wide open and where the Lambo was obviously loafing while 'keeping up', and the Lambo got better mileage than the Prius...yeah, stupid, but it does, at the limit, support what I am saying VERY well. Also, the rotaries were reclassified in almost every form of racing they were involved in, as the HP available from the rated CI was not really apples to oranges, and they were absolutely dominating their classes, to the point of absurdity. Some guys took one to an endurance race that they'd bought for something like $3k used, did nothing to the car except change out fluids in the tranny and rear end, hop the suspension, and build a killer new engine for it. They had $10k total in it at race day. At the briefing the official noted that the rotaries could be so loud on trailing throttle that they had been known to break windshields. Some gentleman racing some ultra expensive exotic (about $200k out of the box, new, IIRC) said snidely "I don't think we'll be having that problem". When RX went by them they were doing in excess of 175 mph, and they took first place in the race, and IIRC by a large margin. Back to the drawing board, clueless Germans (my snide remark, and I'm talking about THOSE particular Germans, obviously the original Wankel design WAS German, and they are amazingly good engineers, as a people). See WWII...V1, V2, Me262, and a lot more. So the moral of the story is, don't get TOO cocky when some very low budget (about 5% in this case) rice rocket pulls up containing some very competent engine builders, because you might get TORCHED, and have to retract your smirk, or eat your words. Cheers, Scotty, good vid overall. Guess it's pretty obvious to anyone who has gotten this far that I was thoroughly smacked with the 'rotary bug', though piston configured ICEs still have a large place in the old heart, as well. Several restos and builds there for me, as well...4 cycles, and twos. My favorite was the 70 Cuda I did, unfortunately not a 426 hemi, though, that would have been stellar.

Love these types of videos. Keep ‘em comin’ Scotty.

I test drove a rotary engine Mazda back in the early 70's. It was a screaming meamy! It did not have a red line but just a yellow zone for the rpm's. 😊

Dear Scotty, thank you for tis insightful video on rotary engine, Im 46 years and i have never ever heard of this engine. What a brilliant idea. :)

Quality content. Great information. Thank you.

I can still see Scotty flapping his arms around as he is doing this video,🤷🏻‍♂️ lol great video tho

Older intro: scotty does burnout Also Scotty: why you shouldn't do a burnout

Citroën has used a bi-rotors engine for its GS in the 70´s