How To Build A Rotary Engine
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- เผยแพร่เมื่อ 21 ก.ค. 2016
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Joe Ferguson from Mantella Autosport assembles a Mazda Renesis 13B rotary engine using Goopy Performance seals and refurbished housings along with Racing Beat ported irons and lightened rotors.
Dave and Joe take you on a serious rotary geekfest as they show you exactly how these engines go together and explain how the unique Wankel combustion process works as well as covering some of the strengths and weaknesses of the Renesis vs older versions of the 13B.
If you're ever at a Pirelli World Challenge race, go say hi to the guys at Mantella Autosport, tell them we sent you, and get a good look at their amazing KTM Xbow GT4 racecars.
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Best 38 minutes I've spent on TH-cam in YEARS!
jort88 I actually watched the entire clip without skipping. the first time ive ever done it. heaps of knowlede acquired. Thanks!
Great
Ditto, zero skips enjoyed watching it come together and learnt a couple of little things too.
38 min went by flying but really learn something new today
How much is all of this worth?
"How good are you with rotary engines?"
"I fabricated my own lobe socket when I was 14."
"You're hired."
I was racing rx3s in Japan in 1982 and we took off the exhaust and made our own header,hollowed the intake manifold,made a template for a Holley four barrel,added mad ignition and away we go! That was the fastest car in Okinawa as I could rev to over 12,000 rpm and only a guy in a 280 z with it bored to a 3.2 l and triple dell orto carbs but he still got smoked! Good times late at night in the marines! I was a mechanic at the rebuild shop so after 1630 we worked on our stuff until midnight and that’s when the racing guys start gathering at the A&W to race!
We did a lot of work on the ports too,enlargening them and experimenting with the opening for a longer intake duration and a lot of polishing!
Do you have pictures of those builds?
I thought rotaries would be really complicated but they look pretty easy compared to a piston engine
I think piston engines look more simpler when they're cut in half. Rotaries do seem more transparent though
Here is the rule for repairing cars, it always looks easier than it is.... (this is from the little personal experience that I have)
@@Imshittingmypants No truer words have been spoke lol. I always watch engine swap or tear down videos and think "thats easy" then when I try I end up thumbing it home 😂. The people in videos are always just perfect. Nothing goes wrong. All the best tools. It almost never goes according to plan irl. My dad always says "if its got tits or tires it'll give you trouble sooner or later" lol.
Piston blocks are easy build.. it’s the heads that are a head do’er
@@stgeorge5862 Good planning makes a good engine build.
from a Mazda tech, thank you for building these so I don't have to
three wheela lol
I was the first person to build a Mazda rotary engine on the East Coast back in 1979. No one was building them and the factory wanted all the engines back for research and develvopement. The engine back then was a 12A Dual Distributor with points ignition and 4 b carburetor. I wish I had a rotary to play with today.
@@ncautoman57 Cool story! You should buy a rotary for fun. Have a good 2019 sir.
Bet u lose a lot of money
@@ncautoman57 what is your age
now my urge to get a rotary is increasing.
Do it, you won't regret it. But get an FD. Not an RX-8.
+gav240z I love the rx8, but I'm actually thinking about getting a NA fc. The reason why is due to it being a good base point to learn about them.
LanEvo55 whichever car is cheapest to obtain and cheap for parts. So earlier ones might be a good start.
just buy a 2 stroke weed wacker. same sound, same torque and much cheaper.
+Simon Liu not really mine is stock been that way for 6 years no problems at all.
I see Vaseline on the table. Aaron Cake would approve. "Like most enjoyable things in life, it takes about a half a tube of lube to get the job done right."
lol. ironically I just watched his videos the other day
its nice to see someone else watch Aaron cake! :)
Aaron and Joe actually know each other quite well. The rotary community in Southern Ontario is pretty small.
+Marc Sumner-Smith *The Rotary community is very big in Ontario, members meet weekly in Ottawa and Toronto. to join us just contact* *rotaract7040@**gmail.com*
*Follow us on Twitter
@Rotaract7040*
The real doktorbimmer no one wants to be part of your club bro.
You guys should do a video about how to own/care for a rotary properly so that it is as reliable as possible.
Good idea!!
patrick valentine drive 20 minutes low rpm so oil and water is at operating temp and then you can go race it my dad has an rx7 for 15 years and never had to change anything to the engine just maintain it good
Step 1: This is critical... Don't modify the engine! So many idiots rape the shit out of them expecting reliability from an 80 cubic inch engine. Mazda didn't design these things to run 500 plus horsepower, so don't come to YT crying about rotaries if you hack the shit out of them.
1. Add oil. Often. Like every other tank of gas often. If you really wanna be vigilant, premix.
2. Let it warm up before driving as often as you can. at least 5-10 minutes if possible.
3. Redline it at least once every time you drive it to clear out carbon deposits.
4. An annual seafoam treatment never hurts
5. Don't flood it.
6. If you can afford to, upgrade your spark/ignition system (starter, coils, wires, etc), the LS2 kit is a popular choice.
@@taborgilzinger8522 Nice list, but the seafoam stuff scares me, probably because I don't have experience with it. I've owned my FD since it was brand new with 9 miles on it. I'd add to your list to take a slow in-lap after a spirited drive. I like to let the turbos spool down on my way back to my garage. My house is about 2 miles from the entrance to our subdivision so it gives me plenty of time to go 25 mph or less on the way in. If it's really hot, sometimes I'll trick the fans to keep running longer by leaving the A/C button on with the ignition in the on position for about 5-10 seconds before getting out of the car. Dunno why, but that makes the fan run longer when you walk away.
Nice job, i think every viewer of this video can truly say they can build a rotary engine. Through and informative to say the least! Excellent work guys!
As a little girl I was fascinated by a transparent plastic Wankel rotary engine that my brother had assembled. It had a little light that was where the spark plugs would be to show the ignition cycle. I think I had more fun with that thing than the boys did. Then again, I am the one who became an engineer, they are bankers and cops.
As a little kid I was complaining about how literally everything is based on exploding a stupid piston up and down when the source of power spins and the goal is to get something else to spin. A rotary engine is just the most obvious design. Pistons that just slam and vent are the stupidest thing I could imagine only 2nd to the fact that people still BUY light bulbs that you have to TWIST into the socket not just once, but like it's a bolt holding a bowling ball preparing for an earthquake when you can make LED light bulbs plug them in like an audio jack using Cork like the original design and never buy lightbulbs again unless it's a gimmick bulb for a studio set or something.
@@linkeddevicesThe Wankel is a clever bit of engineering but unfortunately it was an epic failure, it's simply inferior to reciprocating engines... too unreliable, dirty and inefficient to compete with the earlier concept that we still use.
It's always such a pleasure watching someone who really knows what he's doing. Two thumbs up...
that engine is actually beautifully simple.... possibly more so than a conventional engine
+zephy1001 *The Wankel's lack of sophistication and flexibility is also why it is obsolete today.*
"obselete" lmao you mean innefecient yet fucking awesome?
let me remind you of all of the V8s in America...
lol, i still see snowmobiles, rc cars/airplanes and the like using them. hell mazda never stopped making them, they were still using them in theyre formula mazda carts last time i checked
Obsolete doesn't mean it isn't novel. It means there is no practical reason to select the engine (e.g. typewriters are obsolete). The only reason to choose a rotary is because they are cool. Darcy's comment on American V8s is a foolish one when you look at the remarkable efficiency of the LS series V8s.
Of course we have a dip fuck in here who likes the LS motor and talks shit about the rotary motor and yet probably still knows nothing about them probably a import hater to thinks American muscle is god
Definitely changed my outlook on rotary engines
16 years of experience.. This guys is True Rotary Master
So glad to see a real mechanic on youtube !! I back in 1965 made all my own metric tools to work on motorcycles and i still have some of them i was 4 years old so cool take care and be safe !! Gary K
this engine is just a masterpiece! thank you Joe
this makes me almost confident that i could rebuild a rotary myself if i get all the parts ... holy shit.
I’m currently watching this because is time for gasket kit to be done thanks
Torque with a crowsfoot wrench with a regular torque wrench attached.....works for Boeing, will work for you.
exactly what I was thinking, snap-on do sell then in 1/4, 3/8 to suit your tension wrench and 1/2 inch drive
Actually called torque adapters
Works for the Air Force!
Crows feet are a good option, you can also get torque wrenches that have a u-bolt to attach a spanner rather than a square drive to put a socket on. They are good for getting into difficult spots. The one I used to use had a two position telescopic pointer which you used to set the length of the spanner and there were two scales to set the torque, one for each length. that seems to be old technology now, all the new ones use a spanner quick connect attachment which comes as part of the kit.
I'm not sure why anyone would dislike this video... I loved it... simply amazing... I wish it showed the full build.. like dropping it into the car and cranking it up
Super super cool vid!! Always wanted to see how to assembly a rotary engine with all the specs and tricks you need to know!! Hope there are more of this content all around!!!
im really surprised at how these guys don't have closer to 500,000 subs. great content
We're trying hard! Tell your friends :)
Like there's 500,000 rotary fans too clueless to "build" their own engines who are going to go on TH-cam to "see how its done"? Has Mazda built 500,000 RX cars TOTAL?
Awesome, gotta love the magic of a rotary
This is a Wankel engine... a rotary is something very different.
Stop, it's not, same thing
A wankel engine is a rotary engine but not all rotary engines are wankel. Look up a Le Rhone rotary engine.
+Keven Steeno *Which Wankel are you referring to???* _Only the Wankel DKM prototype was a Rotary layout._ (Millet Type invented by Félix Millet in 1892).
*But the DKM never saw production, 26 major engine manufacturers around the world licensed the production of the Wankel KKM design created by Hanns Paschke... Paschke dispensed with the troublesome Rotary layout in favor of a conventional rotating crankshaft and flywheel arrangement found in all production Wankel designs that were developed back in the 1960's and 70's*
I was simply saying that the term "rotary engine" covers a wide range of engines.
Really important video and well explained in much more relaxed way. Keep up the good work. Thank you for this great lesson.
Finally I was craving this video for a decade!
Awesome video lots learned Thanks!
Glad you liked it.
Rotaries are like two strokes, simple and small, but high power! But they are both hard to take care lol
Jason wong
Nope! 4 stroke...
huh ??? A two stroke is just about the easiest engine to take care of. It's always some imbecile that decides to run it "just once" with no oil in the gas ....Run 3 or 4 oz oil per gallon of gas ....dont run your carb too lean...they're pretty much bulletproof.
Thank you for being one of the best channels on youtube, also happens to be content about cool cars but A+ job guys.
Fascinating. Never knew how these engines worked. Thanks guys
Yep, another video I can happily waste my time to completely watch it! 👍
This is going to get so many views.
apex128 lol 1.2 mil now
Here now
great seeing this video while in the middle of a engine rebuild on my own rx8 6port engine. Keep up the good videos this channel needs more subs...
Great video. I was entertained every second and Joe was a great teacher!
Bahahahah I fuckin lost it at "Brap Sandwich". Probably the best thing I've ever heard a Wankel called.
Neat process, I hope to make a brap sandwich powered car at some point :)
Cheers!
Rewatching this as I'm getting ready to build my cosmo engine for my RX-7 soon and a few things I wanted to correct that were said in the video. Yes the FC and FD had water channels in the irons, but those along with the euros cosmo were the only rotary cars to ever have them there, from 1967-1985 all rotary engines had water channels in the housings and they never had water channel breaking issues like the 1986-2002 motors did, but the reason for mazda reverting back with the renesis is correct. Also lightened genesis rotors aren't the best idea if you want to balance them accurately, the problem with lightening RX-8 rotors is that there isn't enough material on them to do both. The RX-8 rotors that I'm using for my cosmo engine build were sent off to CLR motorsports to be balanced, but not lightened and that is because I wanted the most accurate balance on an already super light rotor possible which is exactly what I got. This video will explain everything I'm talking about here th-cam.com/video/HahComhZR9c/w-d-xo.html .
*Also there is no benefit to porting a renesis engine, the max power to be gained from this is maybe 1-5whp, the reason for this is because it is already a near maxed out engine stock which is why dumping thousands into intake, exhaust, ignition and tuning yields very little results and all porting will net you is worse economy and lower reliability. Top that off with a pair of grossly unbalanced rotors and that's just a shit show I wouldn't touch with a 10 ft. pole, however, there is a type of porting that will increase reliability and even help exhaust flow and that is removing the carbon Catchers in the upper portion of the exhaust ports, carbon builds up in this area over time (mostly from babying the engine and treating it like a piston engine) and eventually breaks loose causing catastrophic internal damage.
Besides what I've talked about above this is a great video and hope to see more rotary content from this channel in the future
Hey thanks
You know exactly what you're talking about!👍 😏 I'm a big fan of 12as and early 13bs.
Awesome! I really appreciate these kind of tech videos. Thanks for all the hard work guys. Need moar...
Great video guys. A really interesting perspective on a rotary build.
Very nice video! Very informative, and Educational. I'm now thinking about using one of these on my dune buggy build! I like 2 stroke motors for the simplicity and this is really a improved design of a 2 stroke, thank you for a great video, I enjoyed watching.
Awesome! Sounds like a really cool project to put a rotary in a dune buggy!
+Mike Flynn Wankel engines use the 4-stroke operating principle
There's nothing funnier than people too stupid to know what they don't know about engines repeating shit about engines you don't HAVE to know a HELL OF A LOT about engines to know isn't true all over the internet because they're "engine experts" and more importantly "rotary enthusiasts. Can you name two types of 2-stroke, Mr. Goodwrench? I mean besides "running" and "not-running" or even a tough one like "liquid-cooled" and "air-cooled"?
Don't confuse the rotary fools. We don't need them trying to learn things and getting "educated" on engines. They're already "experts". Just let them be.
Another engine build! 1st the air cooled Porsche, now a rotary! Love these builds, more please! 4G63 next? :D
Agreed, would love to see 4g63 tear down/rebuild content
RB26 Teardown too!
Man, you are exceptional! You know your stuff and love what you do!!
This was awesome guys. Joe was easy to understand and follow, just enough information to explain things but not too much to get off topic. Educational and satisfying, like automotive lego!
Glad you enjoyed the content!
10:00 "I need to stretch it out a bit"
"Aww yeeahhhh?" 😂
So cool! I WILL have a Rotary car at one point in my life
Rotary ae86????
Wow. What a goal.
Great tutorial. Thank you very much. Takes away my phobia of working on my FD engine.
Very informative video. Gives me a better understanding of the 12a engine in my 85 RX-7.
brap brap brap brap brap brap brap brap brap
well that was a lot of Vaseline - so no chafing issues there!
brap brap brap from a good hard wankel
You can use a torque wrench on the oil pump assembled using a crow foot attachment
I build a lot of engines, the only things I torque are the bearing ends, heads, camshaft bearings and crankshaft pullies. The rest you can do it according to bolt size and for some critical scews loctite is advised. He used the torque wrench a lot because of the Internet critics most probably!
@@st_us the reason he used a torque wrench is because he was torquing down the engine case assembly. Compared to a good ol piston engine is almost the equivalent to torquing down rod caps and main caps at the same time.
never knew this was so simple as an aspiring future wankel owner, thank you for this vid
GREAT VID!!!
1. I thought my friends and I were the only ones that loved the Sears catalog....lol
2. I've had several rx-7's. All 84 and 85 and loved them!! I never had a problem with them and I ran them pretty hard
3. Vaseline? I never knew. I love the rotary even more!!!...LOL
4. GREAT JOB!!!
5. LOVE THE 52MM SOCKET!!!!
Thanks for the info and vid!!
Keep it going!!
I'm such a dreamer, this had me looking at rx7s on Craigslist. We'll see..
I was looking at repus
+Camhin1 look for an rx7, repus have a 12A engine which cannot get as many aftermarket parts as the MUCH more popular 13b
zachary6656 But the Rx7 isn't a ute and I can always swap it.
I really enjoyed the video, demonstration, and step by step that Joe performed. All the jokes on the other hand, I did not. Dave does a good job with extracting information out of Joe, on details that are second nature to the veteran builder, but keep it technical.
Great Vid! Quality content right there.
This is awesome! thanks for sharing
FUCKING YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES
Honestly I would of thought that the rotary motor would have been harder to put together but it looks pretty simple.
99% of the work is in rotor prep and other parts prep. They call this "the build" but really doesn't contain much of the info that leads to a great motor.
A "great motor" would have _reciprocating_ pistons
You're a fucking tool lmfao never even owned an FD Rx7
Build only for yourself, here is why:
th-cam.com/video/3GumUylz6gU/w-d-xo.html
fantastic video, very well done !
"The uuuhhhhhhh"
I Wonder How Many Times He Said "Uhhm"
Enjoyed the video and the knowledge, but goddamn the guy running the camera is annoying! Thanks for sharing!
been involved with automotive industry my whole life recently finished my papers in the traid as well . I found this video awesome found my self watching it right true and learnt some helpful stuff. I would love to see more videos like this one. earnd your self a nother subcriber.
Thanks, we hope to produce more engine building videos in the future.
That would be awesome. It's explained in a very understandable way you don't feel lost at any point.
Great video. I have always wondered about these engines. From the O.s. Wankle rc plane engine to the Mazda Rx motors.
This is what people fail to see, rotary engines only have 3 main moving parts and about 30 or so other parts in total making them the most simple and easy to build and rebuild they take literally no time to build
boost goes in apex seals go out
Not ceramic seals they hold boost much better
ok that was too funny
if you can afford ceramic seals, you can afford a better engine
HenryMania by better engine you mean more rotors? xD
+FatalvenomX No, one that is not obsolete...
very informative and a great video, thanks guys
Super sope video very informational very details thank you for makeing a great vid to share for years to come
can you build a 4 rotor out of it?
YS Lim yeah in theory its not that hard but personally i dont have any experience check out a video about building a 4 rotor
YS Lim eccentric shaft is custom made and a little expensive.
you'd need 2 of those engines, custom made eccentric shaft and counterweight and it would be just as shown here (but 2x the job)
it sounds simple afaik only aussies custom make that stuff and it costs A LOT (10k+)
Error989 Why do you need counterweight?
YS Lim to balance the rotations and make it smooth. It would jump all over like a washing machine with a brick in it if it didnt have one :D (well not that much but you get what I mean).
those rotors are $2,350. I can only imagine the acceleration to be had with both the lightened rotors and racingbeat lightweight flywheel plus it's street ported too so this engine will be very badass with a proper tune. I just have the flywheel that i'm using with my S2 drivetrain swapped S1 and that should be pretty decent on it's own, but once it comes time to rebuild the engine i'll be sending the rotors off to be lightened which I believe the cost to do so is about $600-$700 each. Anyway, hope whoever this engine goes to takes good care of it and beats the shit out of it regularly
It will break down again soon... just like they all do. If Mazda couldn't fix all the reliability flaws no one can... and that's why Wankel engines are no longer sold.
@@doktorbimmer no its not. Emissions are the reason why there are no new rotary cars. An engine that injects oil into the combustion chamber cannot meet current emissions regulations. Second, they are still sold, just not in cars. I just ordered a 13B-REW from mazda last month to replace my bridge ported one. Old engine is fine, but is a track engine and way to loud for the street.
Its always people who never owned a rotary or know how to maintain a car that talk shit about them...
@@surrrithux Bullshit, Wankel engines are obsolete because people refused to buy these horrible unreliable, inefficient and overall inferior engines.
The "Emissions Myth" is very popular among the rotards but completely falls apart upon the slightest scrutiny.
I'm glad there are professional "mechanics" out there that can work and make TH-cam videos at the same time while talking to the camera man to show the "amateurs" how its done since so many "amateurs" think watching TH-cam videos is a good way to learn how to be an "engine builder" rather than doing things like buying and reading service manuals. I have enough problems keeping my mind on what I'm doing in the middle of an engine or transmission assembly to need or want any more distractions. But then again rotaries are pretty simple compared to all those "inferior" piston engines I work on. There is one thing about rotaries I'm not getting or at least the one in this video. How does the "e-shaft" turn at 3 times "rotor speed" if the rotors are driving the "e-shaft"? Doesn't sound possible to me.
That RTV on those "legs" can't do much for letting the "housings" and "irons" sit flush against each other and not be distorted/stressed under torque, either. Isn't the oil level in those engines far below those "legs" where it would have to be way over full or gravity-defying to leak out that high?
Watched this entire vid without even realising it was 38 minutes long. Awesome video !
The most fascinating thing about the rotary engine is that it will reliably run for exactly the same amount of time it took to assemble it..
another comment by someone that hasn't got the foggiest idea what he is talking about !
Rotaries are actually highly reliable.
didnt know these motors were so easy to put together.
American Monster Garage that was my first thought also...
Well resurfacing and prepping was done off screen. But as far as assembling. Easy.
so cool, takes me back to the times in my garage slamming a veedub back together
great video, never seen one of these assembled before.
Why is there a big tub of vaseline on the table and two guys?
it seems rotary engines require 2 things. Shit load of spare parts and a big jug of lube
Might want to consider actually watching and listening to the video
Most people don't watch the entire video. At the very end, they ass-fuck each other. The vaseline helps minimize the damage.
opl500 not to mention the miata in the driveway
It's same like assembly lube on piston engines .... I watch my dad do that
RIP Sears :,(
Thank you for the stunning video. Im rebuilding my rx8 6-port.
How do i remove the pilot bearing without a special tool?
Where should i purchase the rebuild kit?
This Dude Is Really Good! Love the rotary and that job. I wish I were u man... Good job!..
you used one word 30% of all words spoken, err.
Fake clickbait, you didn't even cast and machine your own parts.
I hope this is a joke...
Thanks, Speed Academy I really apprecaite this.
Awesome video, one of the best I watched
STOP SAYING "UMMMM"... "UHHHHHH"... "AHHHHH"... "UHHH" for the love of God, I beg you...
FightClub MeetsHere
I'm glad i'm not the only one that feels this way. The uuhhhh and uuuummm makes the video very hard to watch.
But you have to remember, they're rebuilding an engine, trying to talk And explain what they're doing. I'd say uh and um too
I was going to leave a comment that says can somebody please edit this video and delete or add a fart noise every time he says UHHH or UhMM? That way you know hes having a brain fart when it happens and its funny instead of annoying. Lol
Can't believe Im about to tell a racing engineer that he is putting his apex seals in wrong....
Sidney Well...did you tell him?
this was amazing i've been waiting to come across a video like this one it give me great hope that i can put my rx8 back on the road
How did you do with Rx8
Thank You for a good quality video
step 1: throw it in the trash
Thank you guys THE BEST ENGINE BUILD VIDEO👍THANKS for comments camera dude you explain everything so clearly and easy I learned a lot RESPECT GUYS YOU AWSOME 👍
Awesome! Glad you liked it.
Wow, thank you so much for sharing that with us
Thanks for making this look easy, and gives hope to someone who just bought an 04 RX-8, that more than likely needs a rebuild.
My condolences... its not too late to sell it and buy something better
Absolutely AMAZING! Love it
Thank you!!
Worked occasionally with Joe at RPM a number of years back, wisest rotor-head on the continent.
oh man inspiring thank you for the video
Nice demo. Makes it look easy but in reality you have to be pretty good to assemble a rotary! (correctly)
Sweet video !! Thx guys
thank you! allways wanted to know how rotary engines are build.. cheers!
Fascinating, first time of seeing a Wankel engine stripped.
Worked on many piston engines in my long life but never a rotary.
On seeing this it's child play, much less moving parts a lot less messing about!
Child's play? if the major components are not damaged which is typical.. this parts are difficult and expensive to refurbish and cannot be done in the field.
My mechanics teacher rebuilt one at the side of the road with tools he had in the back of his BMW.
Recently got into college and currently learning and man how I fuckd up my rx8 it's all good now I know what no.to do gonne start the rebuilt soon
Great upload, TY
Great vedio guys very informative, great stuff
Love this video cuz I’m learning.
Thx for the video.