Having only worked on piston engines, this was very enlightening. I had basic knowledge of the internals of a rotary but now understand what makes a 2 and 3 rotor engine. You just gotta love the simplicity of it all. BTW, nice RX-3, as it is known here in the States.

Just watched a whole rotary being assembled and they STILL seem like black magic.

Wow. This was a really REALLY good rebuild video. Wasn't all over the place and confusing. I feel like going out and getting one just to rebuild now. lol

@20cnaf

8 жыл бұрын

Mate, feel the same. I have an s2k that I daily yet have always loved the rotary engine. Would need to be a secondary car as I couldn't cope not getting to work in the case of a rebuild. If only funds weren't an issue. :)

@nezerac

8 жыл бұрын

4.57 S2K Buy a focus se. lol. Bullet proof little cars with a manual trans and if you get a CVH do the valve seats and you'll see 400k before you know it.

awesome video, i love your in depth videos with engine builders and narratives, showing the portwork and many internal parts of a rotary i did not know existed, also filling alot of blanks, thank you for taking the time! as always!

@Camhin1

7 жыл бұрын

Sloppy Mechanics hi Matt

keep this guide, because you will need it every 40,000 to 75,000 miles!

@seanstrange69

4 жыл бұрын

got 160000km at my last build buddy

@bryanp4827

4 жыл бұрын

@@seanstrange69 still nothing to brag about...🤪

@bryanp4827

4 жыл бұрын

Unfortunately you are correct...

itd be cool is this process did actually take 24 minutes and 12 seconds.

@boblecocojames

5 жыл бұрын

You can rebuild one and put it back into the car in a day if you know what you're doing.

@vinwilliams6562

4 жыл бұрын

Only if you want to blow your tips off

@georgeapirana812

4 жыл бұрын

🤣🤣🤣

@timurdenisleam6762

2 жыл бұрын

@@boblecocojames you give us hope

OMG! Thank you! Such a nice build video. I used to have a 1973 Mazda RX 3 Wagon that the previous owner cut the roof off of, because he wanted a convertible! Soon after doing that, he discovered that the vehicle flexed way too much without the roof , so he had his local shop weld in a custom full roll-cage. Then he had the 12B rebuilt for high performance and did some minor suspension work. It had a Wink Mirror and DAMN! that thing was so much fun to drive, especially in the early eighties when the congestion wasn't too bad... Rotaries love to rev, not like pistons that have the whole: up, stop, down, stop BS. Rotaries, once they get going, just want to keep winding up. I remember the over rev buzzer all too fondly and miss my old, what some had termed, Road Warrior Car... Rotaries Rock!!!!

I've watched a bunch of rebuild video's and this one is easily one of the best! Awesome work guys!!

I'm Old School Rotary Junky And This Video Is Well Done!

This is a great resource on bridge port. I always hear about bridge port in rotaries, but knows nothing about it. Now i know! Thanks!

@ 22:49 you can hear why the rotary never "took off". Don't get me wrong. I absolutely LOVE these engines. That sound you hear is actually the engine losing a LOT of it's compression when the apex seals hit the plug holes. Fantastic video! thanks...

Thanks for that. I've always been fascinated by the 'other' type of engine but not had a really good understanding of how it is put together.

What a marvel... Lots of delicate looking seals...I know they work well but Im still surprised. All in all definitely fewer parts than a normal piston engine. I really need to pick up a 13B or two and marry them together... This looks very easy and my understanding of the rotary has moved a bit further because of this engine rebuild video....and you just GOTTA LOVE a rebuild video that ends under the hood and running for us...SWEET... Nicely done!

Great video. Nice to see a motor put together and explained how and why it was done.

Thanks for posting this. Always wanted to see the rotary engine dissected.

YES! More of this kind of stuff Fullboost! Can never have enough rotary!

bloody awesome video guys. Thanks so much for posting. Watched it all the way through.

That was really cool! I have always wanted to see how one of these engines is rebuilt. The car that it went into is very beautiful and I love the paint color. Thanks for sharing

Fantastic video! I think this is a great addition to your channel, straight forward, easy to understand and to the point. I really hope these videos take off. Great work and thanks!

@fullboost

10 жыл бұрын

Thanks for the positive feedback everyone. We'd like to do more videos like this.

Thanks for putting this video together, its been really interesting to watch.

that was one of the best things I have seen on KZread for ages. Have you guys got any other porting videos

THANK YOU,GUYS...Making it easy for those that we LOVE Rotary....

This was absolutely the best video so far!! Great job!

man rotary engines are cool, I so need to try one of these babies out! Thanks for sharing this.

That engine sounds so sweet! Can’t wait to get my own one🥰

Nice video, thanks! However - for clarification to anyone not aware... When installing the oil control rings into the rotor, the notch side not only needs to go down, but the notch must align with the squared tab end of the spring. You were clear about the other side - the rounded end of the spring being positioned into one of the small holes in thew rotor, but you did not mention the notch needs to align with the spring as well. Thanks again for sharing!

Excellent video guys, a mine of information. Cheers, I feel my upcoming rebuild is in good hands now!

This was very cool! Never knew how these motors worked. Thanx.

Please make more instructional videos like this, I think these videos provide a lot of in depth technical information for motorheads like myself

Watching this makes me want to install a rotary into an old pickup with a failed engine just to have some fun. Thank you.

Awesome video and beautiful vehicle!

Excellent video,I was facinated and at how intricate these things are!

Amazing!! These engines are much more simple than a piston engine I like it now you need to do a video on how to turbo one of these

My first car was a first gen rx-7, i also got an A+ in "advanced" auto shop class in hs for rebuilding an engine for it... I remember how much "fun" getting those seals in place was, the corner and the side seals were a serious pita. Back then (96), there was not nearly as much available as there is now, however i spent lots of time browsing those mazda trix catalogs dreaming... Makes me almost want to pick up another one of those cars. And i think transmission assembly gel would work much better holding everything in place when assembling. ;) They even have different grades depending on how much hold you want vs temperature.

Best video on engines I have ever seen

@BackyardMechanics

9 жыл бұрын

Chris McEvoy thanks, we have a few more coming, and hopefully by the end of the year we will start work from scratch on a project car so make sure you subscribe to the channel!

@juancabeza5809

8 жыл бұрын

+MrParts_RotaryRaceCars No, you was very disrespectful to the other guy above asking about the seal. We will not subscribe to people like you who think that they are entitled to mistreat people whenever they feel like. People, look for aaroncake here on you tube, he has a very good series of videos about rotary engine rebuild.

@juancabeza5809

8 жыл бұрын

+Juan Cabeza *you were

@juancabeza5809

8 жыл бұрын

matt williams shhhhhhhh... kid

@bertrx-7406

6 жыл бұрын

juan cabeza Lol sissyboy don"t get your panties all bunched up in there.

Awesome video! It was really easy to understand the process.

Yup, I'm thinking of doing it myself too even though a shop I found, was charging me 800 which is not bad but I like trying new things!! With this video I'm sure I would be able to do it I just wouldn't fire it up. Unless it was getting tuned right away.

Awesome video. You make it seem like anyone could go do this easily

Awesome vid! Wish I could get a hold of one to play with.

Not in the rotary engine crowd but this video was very precise and detailed!

OMG great video, have to try this sometime haha but seriously, really good learning video. Thanks!

Love to know the power numbers this engine makes. I built a model Wankel long ago, even read a book on them, great idea, but it was never intended for making huge power numbers, glad some do.

I really enjoyed that and it sounds amazing

Great video i really enjoy it and learn a lil bit more about rotary engines

Great vid! suggestion, use a press for bridge porting & follow up with dremmel router. that way you get crisper angles & then flute edge. Flute like 01°. Does that make sense the way I explained? I use rotarys geared down for my aircraft.

@fellowship of the goat, The Corner seal and Side Seal run along the Bridge, If you had one big port in the side the seals would fall in and it wouldn't end well.

rotary enige sounds very clear nice done

Top job mate.. Clean and organised..

Good instructive video. Suggest removing the pressure relief valve from the front of the E shaft and replacing with solid plug as most of your extra oil pressure will just vent off there. Don't want to add pooh to your ointment lads, but while the external port profile is good, the internal profile of the bridge port is crude. It sounds great at idle but doesn't bump up the hp of the engine as much as it could. Most of the intake charge will rush past the b/port and go through the main port anyway. Trick is to redirect an even higher percentage of the flow through the b/port. Thats all for free ;o)))

Excellent video and description! You need to show is how to do PP rotary now please, thanks.

Brilliant Video !!!!

Thanks for the info, especially regarding the D-shaped exhaust port. I suspected that would be the best design, but I wasn't certain. I was also intrigued to see how you milled the faces of the rotors to prevent scuffing against the housings at high RPM. I plan to use this info to modify the tiny rotary engine in one of my RC cars...if I ever get that car up and running in the first place. I have a question, though: Are the scoops in the faces of the rotors really the best way to transfer the fuel charge from the cold side of the housing to the hot side of the housing? Or would it be better to have channels cut into the housing at the point of maximum compression, and use non-scooped rotors instead? It seems like non-scooped rotors would do a better job of thoroughly evacuating the exhaust gases, and also minimize port overlap regardless of the port design.

great job the engine sounds amazing

That was awesome !

Badass instructional video, very detailed

keep up the great work man

Very Informative I've always wondered how they seal the combustion chamber & now I know, Thank You. I'm a Valiant-Holden Man Myself & A Firm Believer In "There's No Substitute For Cubic Inches" But Credit Where Credits Due, Rotary's Are Bloody Awesome & Theoretically There's No Size Limit For Rotary's, I'm Also A Firm Believer In Extreme Power & Revolutions, Interesting?

Fantastic video. Thank you for sharing.

Well made video. Cheers.

Such an informative video. Cheers guys.

excellent vid, first class !!

0_o I'm speechless. Rotary is an art to rebuild for damn sure. very good walk-through video.

outstanding work! also that is one of the nicest sounding engines i have ever heard..

Really great video. Well done.

would this build be the same for the rx8 engine?

Great, informative video - good job!

Great vid guys

AWESOME.... more like this

Question.. if the impact on the Rotors is at the upper/lower part of the rotor near the apex seal why would you not clearance that part of the Rotor as well ?..Racing Beat does clearance the upper section only. I would think it may be prudent to remove some material from the whole surface..let me know what your thoughts are ..Thanks....for sharing your video..

Beautiful engine, beautiful car!!

The best tutorial ever!!!!

Sweet video man keep it up

after the rebuild and the bridge and port, how many ponies is it cranking out? Is there much of a difference when you bridge and port it?

Outstanding video cheers

can anyone tell me how the rotor motion is transferred into the shaft? is there a key-way or anything like that? looks to me like it just sits around the eccentric journal barely in contact.

Fantastic video . Thank you

that was Beautiful !

Tops vid. Really detailed. Cheers

Brilliant video!

Have you had any issues running 2 piece apex seals with notched rotor housings? Most of what I've read say to use 1 piece seals. Thanks for posting this, very few builders show the porting process.

Instead of messing with the oil dif, can i just premix as well?

Great job man.

nice job... sounds mint

sweet video, guys.

i'm interested in getting the tools for porting, have where can I get the kit or do I have to buy them separate? really helpful video! But one more question! How did you get the measurements from the closing port timing? or what are the measurements?

Hey, I'm having problems with my RX7 and need help desperately. I have a 1985 GS and it shakes EXTREMELY rough just at idle. When I get to about 5,000 RPMs the shift nob is vibrating so hard/fast that it feels like I'm grabbing one of those prank shocky pens. If you have any idea on what it could be please let me now. It's all stock except for a direct fire system. Both leading and trailing spark plugs fire, just replaced distributor cap and rotor, and nothing is wrong with clutch/tranny.

Just asking but when I've watched other video's off people building these engines have put sealant? ,is it not then needed?

Very nice guys

I have a 2004 rx8 and I will be rebuilding the engine and it has the same 13b, this video applies to that right. And where did u get your rebuild kit from

Hey man thanks for this vid.

Hi. I have just bought a mazda RX5 -77 and i'm going to overhaul the motor, i wonder where you recomend buying all gaskets and apex. Thanks! Rickard from Sweden

Mean video man . inspired me to build one.

@BackyardMechanics

7 жыл бұрын

killer! post up some photos in the new fullboost group on facebook facebook.com/groups/FullBOOST/

My dream is to fix and build rotary engines. They don’t have any big names shops here in New York and I would love to start helping people with their cars.

For the novice rebuilder. Sideseal clearance is 15-40 tenths (.0015-.0040,) not 15-40 thou. (.015-.040)

The tail lights are 🔥🔥🔥🔥

I could watch shit like this all day!

im not really a rotary guy but this was a cool vid thanks!

nicely explained video...now i want a roatary engine to disasemble and put together again :P....didn't know they were that simple... :) have done some disasembly and reasembly of volvo enginges in my early days.... :)

@connoisseuroftigolbitts

8 жыл бұрын

they are not as simple as you think... it takes alot of time and patience

@rotam8680

8 жыл бұрын

They are simple just tedious

Question. what if I don't want my bridge port starting that early to the point where it's overlapping my exhaust port .......would that be a half bridge ? if not how would be the power ?

Would it make sense to tape off the rest of that plate while you are machine the port so you don't accidentally scrape it up?