How to Build A 10,000RPM Rotary Engine - Part 2

[@speedacademy]

Find Part 3 here: kzbin.info/www/bejne/qF68p3SIbbxnack

[@ghostgaming7431]

As I said in the last ep. this is the proper guide that we need to understand how it is done. And to be honest if someone out there wants to buy an FD3S RX-7/ RX-8( or any rotary car in that matter) they won't find a mechanic that knows how to rebuild a rotary and so they can do it themselves. And again Thanks SA for doing these guides and keep up the good work. Can't wait for the next one. #ForeverFD3S

[@mustangdemon87]

Why do you say you wont find a shop... There are literally hundreds of us out here rebuilding these in the U.S.A. alone!!!

[@PGHdrift]

Until he said I can feel the gap.....I don’t have to measure.....famous last words

[@inferno66750]

@@mustangdemon87 But the audience is international. For example in France Rotary engine are not really known (even by Mazda), and there's only few Rotary experts shops here

[@ghostgaming7431]

@@mustangdemon87 yea go find me an expert in Bulgaria(Balkan states) and even if there are they will cost at least 3k USD(4.5k BGN)

[@MaximKilligan]

@@mustangdemon87 Find me a rotary specialist in Luxembourg where I live, please :D Don't bother: There are none.

[@boyflexnv]

The knowledge delivered here! Don’t know anything about rotary engines but I’m excited to learn

[@thejohnnybob]

These guys are great. Check out Rob Dahm's channel if you want some irreverent humor in the rotary madness.

[@swagyboi4255]

same here

[@jaredspratley6270]

If you would like detailed information about the assembly of a rx8 rotor following the correct steps and the balancing of the shafts and rotors id suggest angel motorsports, they take their channel to the machine shop for every build and walk the audience through the process rather in depth, theres a good bit of work that was skipped here you could learn from their videos

[@Redshift42]

My rather humble claim to fame. My project back in 2007 or so was Joe's first use of RX8 rotors in a ported RX7 motor. Good to see him still at it.

[@stoptryingtousemyrealname]

How'd it turn out? Kickin' ass?

[@BroomysGarage]

The difference in ‘2 stroke’ oils is usually one is ester based and one is castor based. Ester based 2 stroke oils will not mix in alcohol fuels like E85. So if you guys are going to run it on ethanol, make sure the oil is castor based.

[@erikgehander7304]

Thanks! I’m saving this one 😎😁

[@John.strong]

I have friends that use normal caster oil in their rotory

[@jamesford3549]

There are better synthetic premixes to work in alcohol than castor. Castor separates and gums up. Smells good works bad.

[@mustangdemon87]

Just stick with what was spend millions on developing specifically for these engines. Idemtisu racing premix.

[@sandervanderkammen9230]

Premixing is monumentally stupid. The Wankel engine is 4-stroke and Mazda reccomends 4-stroke engine oil. Don't be that idiot pouring the wrong oil down the wrong filler hole.

[@MyBridgestone24]

The Valvoline adds are literally amazing. Thumbs up for that. Crushing it.

[@paulvernon4160]

I believe on the rx8 rotors, when fitting the side seals your meant to use feeler gauges to push the side seal towards the center of the rotor, certainly in all the videos I've watched recently this is what has been done, it's to simulate the compression of the engine once running forcing the side seals inwards (if this isn't done it can cause binding)

[@RandomGuyWithaMazda]

4x feeler gauges or you are doing it wrong, you are correct in this case. Can we get los hermanos rotoras over here, wya Angel Motorsports

[@vpr123west]

I came here to say this as well. If you measure at the end you usually end up with the clearances that are too tight and wreck your motor. Unless your going turbo the pre-sized seals are fine and eliminate the possibility of a measurement error.

[@mustangdemon87]

This is yet another reason i hate people like this giving out wrong info in these videos! If your not going to spend the time to actually give the proper procedures DONT MAKE THE VIDEO IN THE FIRST PLACE! Ether do it right the first time or not at all!

[@jaredspratley6270]

Yes you need 3 or more and you do the entire side of a rotor at the same time

[@jaredspratley6270]

If you want to see how its done right angel motorsports just did this on their 3 rotor with the rx8 rotors, he shows you the right setup, on rx7 rotors you just use 1 but if you want the high compression rotors done right watch theirs and follow the procedure

[@tunedbydre]

Please never stop giving us these videos. Very informative 🙏🏾✊🏾

[@Jake_Hamlin]

Not measuring side seal clearance isn't very informative...

[@tunedbydre]

Jake Hamlin He has been building rotaries for years. I’m pretty sure he knows what he’s doing.

[@exchaby]

@@tunedbydre good luck building your own engine, based on these informations, and guessing the clearances by feel

[@Hunac-Ceel]

The valvoline advert is pure gold 😍

[@sk83rboi777]

I wonder if it was SA's idea or Valvoline's though lol

[@Hunac-Ceel]

@@sk83rboi777 either way it's a great idear 👍

[@bobbyd642]

I am very happy you guys made this build possible. I will be using this video for my FD rebuild. No v8 swap here.

[@Bob_Sacamano69]

My favorite video series on youtube.

[@CrypticLab]

I don't write comments very often, as I watch allot of videos when I am at work on separate screens as my background noise, but your videos are very good. I first came across your channel a year ago and seeing what you guys do is just awesome. I wish you both the best in your future endeavors in this KZbin world. You guys are awesome and keep doing what you are doing, just don't let the trolls that roam the interwebs bust you both down.

[@chrism1106]

Legit never cared about rotary engines until a few weeks ago when I watched a see through one running on another channel. Then you guys dove into this one right after that. It couldnt have been better timing and I'm learning lots

[@JasonTownsendJasonTownsend]

The stuff about how the port works with timing, etc, is the kind of content I'm looking for!

[@aleksandari.7834]

Respect to the attention to details from both of these guys!

[@julians7268]

Love it! Just recently started entertaining the idea of a rotary after watching Rob and his 4 rotor. Love the info here. Thanks!

[@earnestbunbury2103]

His vids made me stop entertaining the idea about a rotory ... 😜

[@julians7268]

@@earnestbunbury2103 Lol!!! Yea, I could definitely see that too.

[@ChuckThree]

Thanks for helping to demystify rotaries. No other rotary content on KZbin is this well structured and concise. Keep at it👍

[@uniquelypositive]

Love the simplicity and precision of rotary engines. I've got an RX-7 on my list.

[@mr.cangieter8758]

Love this series. Dreams of owning an FD one day.

[@TankRust]

This is great insight to what has historically been a secret art of engine building. I hope you meet all your performance goals and have a long lasting ripper of an engine as a result!

[@erikgehander7304]

This is what I love about rotaries.. all you need is proper research basic knowledge and a feeler gauge and you can rebuild your own rotary! And if push comes to shove and you need to replace bearings you can probably go to a shop and borrow a inside micrometer and outside micrometer to figure out bearing clearances. It’s very doable!

[@TheTurbofx]

Love the amount of information in these videos. Hard to find that on YT these days.

[@38tech]

Those valvoline commercials! Haha I know NOTHING about rotors other. Tttthan tyr tdd hey sound awesome and the feneral premise. Really cool to see it step by step.

[@NateRist]

Love seeing more and more people coming around to using high compression rotors in turbo builds (specifically with rx-8 rotors). 10.0:1 compression, standard scallops, 9.3 lbs each (9.2 lbs after apex milling and balance corrections typically) making revs much quicker and, most importantly, more power and torque with less boost. In my 76-78 based large streetport 13B i'm currently using S5 na 9.7:1 9.54 lbs rotors and love it as is, but I am building a second engine with a pair of modified rx8 rotors balanced and side clearanced for up to 12,000 rpm (not going that high, but safe to do so if wanted) and I may rebuild my current motor with rx8 rotors as well just because I have many on hand and would make my NA setup just that much better. *I'm also a huge advocate for OEM apex seals only (with exception to Ianetti ceramics), however, from what i've been seeing with i-rotary seals they may just very well be the first and only cost effective aftermarket apex seal (roughly the same cost as OEM) that is both more durable than oem apex seals, but also matches or exceeds OEM in terms of wear over time and mileage (as in the same or less wear) and I may build one of my engines with them in the nearish future

[@jaredspratley6270]

Do you not like goopy seals?

[@markmartin7384]

Stoked to get a new speed academy video. I was getting withdrawl symptoms

[@antn537]

Lot of debate with oil in rotary engines, but I've always read that synthetic oils should never be used (either in your sump or for pre-mix) as they don't burn in the same way an 'mineral' oils, which I understand means the synthetics will leave gummy deposits. For the 2-stroke pre-mix a high ash mineral is preferable. When I ran my RX8 (standard 230hp six-port) I always used 10W40 'mineral', although I didn't also use pre-mix. Incidentally, I was also always told that the oil injection (particularly into the rotor chamber) was mainly for the cooling and to provide additional film seal, particularly for the apex seals. Supposedly, mainly due to the minimal moving parts, using oil to actually lubricate really only applies to the rotor and end/e-shaft bearings.

[@seanm.collins9888]

Always interesting discussion. Idemitsu is fully synth: www.amazon.com/Idemitsu-30018100-75000C020-10W-30-Rotary-Racing/dp/B07MMT6W3Q

[@speedacademy]

We’ll be deleting the OMP in order to run synthetic. More on that soon.

[@erikgehander7304]

From what I’ve gathered everyone that does premix runs fully synth. The debate later is whether you should run synthetic or mineral in the engine. My conclusion is. Mineral in engine if you have the OMP, Valvoline VR1 Racing for example! And the a smaller amount of premix with fully synthetic. No OMP you can run fully synthetic in the engine and a fully synthetic premix but a increased amount of it :)

[@banzairx7]

Two strokes put to bed a long time ago whether or not synthetic pre-mix is better. It is MUCH better than non-synthetic in every way.

[@lustnmotors]

I always knew about rotary engines and know one of the biggest guys here in Japan but this is awesome!! I definitely like to learn about stuff I don't understand!! Keep up the valvoline moments to 🤣🤣

[@MrAudi220]

I think this is going to be a sweet setup with those higher compression rotors.Great content guys

[@ChoPi-Eww]

You guys are the ORIGINAL dorks

[@bradmorfett]

the sports presenter segment is incredible

[@MrRotaryrockets]

The rolled edge is called the Coanda Effect it allows the air and fluid to maintain surface contact in the same direction of the open port.. providing less turbulence .

[@orlyrx7CanutoUltra7]

Love the original intermission .... Valvoline.

[@karmatose]

Enjoyed this video. Rotary stuff is something I've always wanted to mess with but is a complete mystery to me. Thanks for helping demystify it.

[@Awas79]

Them Valvoline sponsor spots are great :') Awesome video with excellent information

[@Red2l16v]

One other benefit for the RX-8 rotor is that it has a 3rd oil seal on the face of the rotor for better oil control. I wouldn't use the higher compression rotor on a gasoline build but on E85 it is cool.

[@6ix13ree]

So glad you're doing series!! My last comment made an impact. Great!

[@neoanderson7]

Great to see Joe is doing well!! Rotary guru for the longest time. I'm enjoying these vids. Hopefully I'll be able to do 1 of my own whenever that day arrives (hoipefully not within my life time.. lol) :-)

[@HairyTheCandyMan]

I love this series! There's some good information here!

[@pFbSpecV]

So much knowledge shared here! Pretty awesome well done video!

[@cruz_control3925]

Glad to see that you guys decided to keep it up! This is going to be an interesting build, looking forward to seeing how the rotary turns out!

[@diabolowho]

love the in depth technical breakdown. great work as always

[@captainobvious9188]

With higher compression I personally would choose a slightly larger turbo with a well-matched compressor/turbine, and run lower boost to achieve the same output (although with a higher thermal efficiency), then what I would run with stock compression REW rotors. I enjoy seeing the results from what you guys do and wouldn't change it (except if I could change what blew up the EVO motor).

[@mulljacob]

I want a mock see-through rotary engine. The way I understand how they work it seems like they would slam themselves apart in no time so seeing the inside of one running would help simplify things, at least for me. Peaces!

[@bransonfleischman2233]

I think warped perception actually had a video on a glass sided rotary engine from like a rc airplane. Definitely worth a look

[@miguelare3]

Man this build is going to be sick!

[@Kamukix]

Ito!!!!!!!!! This video series makes me so happy! 😁👍

[@jp2246]

This is so awesome, props to Joel (Joe?), absolutely love this channel, hope you guys are enjoying your time off

[@bob19777]

10:35 if this engine fails you guys already know why

[@NuckingFutsNyck]

Lol “I just do it by feel”

[@aronharper7001]

Can you please share the proper technique with us?

[@bob19777]

@@aronharper7001 angel motorsport will teach you

[@CharlesChristena]

Loving the series so far guys. Thanks!

[@howardahhon7600]

Learning a lot as usual, thanks guys!!!...

[@zackthomas3220]

I love this channel, such in-depth learning and knowledge.

[@mattcaudell9972]

Run maxima castor 927 with some race gas. You will not be disappointed by the smell.

[@ksrgt]

the 'stache must be in EVERY episode

[@mariosnikolaou5212]

I am really excited about the whole project.Want to see the gains and the fuel consumption of this engine.

[@zimble]

Looking forward to seeing this rip!

[@PJeezy710]

Valvoline high mileage is all I have put into my car 👌🏻

[@ryanmcandrews9343]

Fantastic video! I can't wait to see how this turns out.

[@mapwheel00]

Commenting to show support.

[@blitzwing1985]

Loving the series so far keep up the good work!

[@andrewk332]

This would give Vargas brothers a hart attack

[@therotaryguy1863]

FACTS😂

[@dboys4534]

Gave me one 😂🤷🏻‍♂️

[@matthewquinn937]

good stuff, looking forward to the next installment

[@corwininadsm]

You could always port the rotors and use equal volume of liquid to ensure equal compression ratio, or use an octane booster.

[@jessyltr581]

Advertising made me laugh 22 years old from quebec! Keep it up

[@israelcardona5170]

I just watched one of the Vargas Brothers Instagram story and boy did you make them cringe at the fact that guy said he goes by the feel 😂

[@israelcardona5170]

instagram.com/stories/vargas_fb/2399767276504289365?igshid=1tu5wugty5qrl

[@israelcardona5170]

They also show a video in how to properly put together RX8 rotaters maybe y'all should check them out lol

[@karlosmuschek]

Very informative vid mate Glad to see you boys keep going👍

[@mondomoleno.3404]

Valvoline should do a run of commercials just with your facts all in one commercial. If it were played on other KZbin videos, I might not even skip it after 5 seconds.

[@leotam3372]

Judge ito is a name I haven't heard in years

[@nsunfd2689]

Really want to see the result of RX8 rotors in a RX7 housing.

[@jaredspratley6270]

I've seen several, the spooling of the turbo is a bit better, i haven't seen much power difference in them however, they are lighter as well so you can rev up near 10 k If its built right

[@tougeindustry]

Keep it up guys good content 👌 don't get down about channel views it will come back around!

[@damiendoisher7812]

Lucas oil makes an ashless oil that doesnt produce alot of smoke. I run it on my H1 it's pretty good stuff. Can mix it pretty fat and still not smoke a ton.

[@ButtKickersReviews]

‘The Valvoline Commercial’ 🤣🤣🤣 GOLD!!

[@PrerakKataria]

Very interesting video! Got to learn alot of new stuff about the rotary, loved it🔥!

[@michaelallen2501]

Watched this after file fitting 16 rings for a V8 today. I don't feel bad for you guys hahaha.

[@blue04mx53]

05:11 that reminds me, I need to book my dentist appointment.

[@RandomGuyWithaMazda]

sheit, building rx8 rotors is more of a pain in the ass than regular REW rotors. Must have yourselves a rly talented dorito engineer there.

[@ZackNakazora1]

I've always wanted to make a hybrid rotary to drop into an frs high compression rotors and some. Mild porting and shoot for 9000 rpm like the renesis. Would be awesome!

[@matthewkatene5031]

If you dremil the water jacket out it really helps to keep it cold to dude

[@MoarLow]

Vargas bro’s cringing at 10:39 😂😂😂

[@jamesford3549]

Should be using 4 feeler gauges for RX8 rotors. Also ianetti didn’t invent ceramic seals, Mazda in japan had the original ones produced in japan for the 13G race engine.

[@jaredspratley6270]

Thank you, came down here to say the exact same thing

[@McRib47]

thanks for another great video! currently watching this before work. always have to learn something new! ps i dont own an rx7

[@ealoken]

Nice episode ❤️

[@WTFNoNamesLeft2]

So funny! Great stuff guys!

[@PANTYEATR1]

dang...how does the 2 cycle oil effect the O2 sensor in RX7s and RX8s??? very interesting engine...

[@jaredspratley6270]

They aren't that bad on them, if you have issues you can use a spark plug non fouler to space it out, will make it think its lean so tune it on a dyno with a dedicated afr gauge for a proper lamda reading, but its not typically a issue it gets burned up

[@ozne99]

What HP levels are you expecting with the RX8 rotors? Looking forward to how you guys tackle heat management!

[@rotor13]

Depends on the turbo they're going to use. With a small-ish turbo, about 450hp. With a decent sized one like a 35R or equivalent-sized BW EFR, can get you to about 500-600 easy. The issue is tuning at that point. High compression on a rotary - any detonation event, even a single one can be enough to pinch an apex seal.

[@0foxgiven]

Keep it up guys

[@Scrambles2112]

This make me wants a rotary in my 240sx

[@vincentradziecki7470]

I love rotary content!

[@Uglier.]

WAS WAITING FOR THIS!

[@danielxdmon100]

U guys should do a comparison between the rx7 fc housing and the fd housing.

[@jaredspratley6270]

The housings are rather similar there would be a difference between na fc and the fd but the turbo 2 fc used the same housings as the rew. The biggest difference would be a rx8 housing, they changed the water seal location and couple other things

[@jakegavin5010]

Welcome to dorito power 😂😂

[@TitoHR]

Financial disaster lol

[@abccba2344]

@@TitoHR If u dont know what you are doing or how to use and maintain them, then yes.

[@Alex-vz2jz]

@@TitoHR indeed but that won't stop me lol Love my FC Rx7 I love it even more because I and this other dude in our area are the only ones who own a rotary car.

[@FELiPES101]

are there shops that use a cnc to do the porting so that is comes out perfect everytime?

[@go-ut1pc]

I’d love to purchase those plates

[@dandil]

if you remove the metering pump then you need to treat it like a 2 stroke, meaning you can't coast on it!!! Alternatively, you can just add a special 2 stroke oil tank to feed the meetering pump while you use nicer oil in the sump.

[@jaredspratley6270]

Yeah......noo.... on a rx8 this is ok but the rx7 the oil jets are bad.... really bad. The Reason we do premix is because with it coming in the 6 injectors you get better oiling because of the spray pattern of the nozzle. There are plenty of us who daily 400hp rotarys who coast and commute on the highway, long as you recline them once a day (who am I kidding if you own one your on it all the time) you will be fine

[@Mustardmartin]

@SpeedAcadamy the the side seal Lesson was funny for me to watch because i just watched an @AngelMotorsports video and they were randomly putting the same rotors in the same housings as you guys and they specifically show how they get several feeler guages in there to check the clearance it didnt look as easy as your guys method but its funny because they say if your engine builder doesnt check the side seals this way then get another engine builder haha then i watch this really random for me but anyhow im sure itll be okay i found it random i just watched it on the other video and then saw this thought it was funny its there 11,000 rpm video go check it out if you havent. Love this stuff guys but hate the valvoline commercials you are better then that guys c'mon haha jk some people think there funny & i know and understand gotta do what you gotta do its all for us so thanks !

[@JDMshitbox]

Excellent work and video!!! How is the battery life on that Milwaukee grinder??

[@setharcher5869]

Why do you need to work on the granite slab when doing the seals?

[@meca13b]

Are they the old rotor housings Resurfaced? Rx8 rotating assembly or just rotors?

[@EngineeringSiblings]

rx8 apex seals are 2mm thick and 5.3mm high at spring support (not the highest part) rx7 apex seals are 2mm thick* and 8mm high at spring support *older were also 3mm and there was also a 3 piece alternative, they are not 2 and 3mm :D

[@MarkMorbidity]

I don't recall but don't the side seals get a different cut if it's going to be NA or turbo? I don't recall but I think it was like 0.2 gap for NA and a 0.5 for turbo set ups. I'd like to get mr ferguson :)

[@maltaftw]

first time ive seen the shim thing between the corner seal and apex seal , can you explain that please?

[@AllTheBestNames]

Will we be seeing a certain FD RX7 from past Speed Academy videos?