💬 Tuning a Rotary Engine - Technically Speaking

Are you a piston guy or a rotor guy? If you identify with the latter then this might well be the most important video you'll ever watch.
Please note that this is not a specific, DIY-type "how to tune" walk-through video, rather an overview of general principles that can be used as a guide to the fueling and ignition requirements of a rotary engine.
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[@TheTurbooneg]

that was a great video. tuning a rotary isn't nearly as complicated as a piston engine and what you provided was good safe numbers to begin with.

[@haltech]

+TheTurbooneg Thanks:)

[@waelcartech]

+haltechecu I have thought of in idea " invention " that could make the rotary engine much more eco and better fuel ratio and could I get a halyech ecu for research ? I will be at final year project in auto. Engineering , so I want to konw what could U provide ?

[@Robstafarian]

As you progress in your research, bear in mind that the word “invention” has a very specific meaning in US intellectual property law (I realize that you may not be in the US): an idea becomes an invention when it has been “reduced to practice,” meaning that the specific method for implementing the idea has been devised. My invention is four years old, and I am just now ready to prototype it. That brings me to another point: manage your finances well, as poverty will delay your efforts beyond the limit of your patience.

[@arrancoote]

In my experience tuning a rotary is equally as complicated/uncomplicated as tuning a piston engine, however with catastrophic failure a likely result of getting it wrong when it comes to rotary

[@JayCras]

Right... So its not possible to make a piston engine fail by tuning it wrong. *Making note...

[@TheCarPassionChannel]

Love, love, love these tech videos.

[@eddiebernays514]

hey it's that guy from mcm

[@haltech]

Noooo... it's the guy from Haltech that does guests spots on MCM:)

[@eddiebernays514]

haltechecu I know it was a joke lol

[@jorgeosorio8542]

i thought the same thing about mcm lol

[@PorcupinePunched]

He has a name. It's Tuning Fork.

[@unknown1creature]

lol

[@rotorg33k]

on you Scott!! our rotary is still winning.. same engine with haltech since November 2011!! we will see you at jamboree!

[@BaronRosenhein]

Thanks Scott, that's heaps of useful information squeezed into 7-minute video. If you're looking for video ideas; I am interested to see one on trigger wheels for rotaries. Pros and cons of switching from factory setup to 36-1 trigger wheel setup, accuracy, and configuration in Haltech ECU.

[@Domenicdigital]

I greatly appreciated this video sir. It's assisting me with the confidence which I need to conduct my own tuning on my R1-RX7. After school and my next build I my own car will be my first time tuning it. I can't wait.

[@starvalkyrie]

Hey Scott, you said this video was to go over "what my engine wants." But my engine wants a full set of seals 2 new housings and at least one properly grounded wire. Can you explain this omission?

[@asomind]

I always regretted that Tuning Fork didn't have his own show or at least post some videos, as everything he explains is always very clear and very understandable by mortals like us. Yet today I finally discovered that channel!

[@haltech]

+VictoRR We are glad you've found us :) There's plenty of Tuning Fork wisdom here and more!

[@asomind]

+haltechecu so I've seen! I'm still a regular fork though when it comes to tuning my car... but I'll get there, I know it! Keep it up its always a great watch!

[@AtomicBabel]

Pl

[@muhammadsyafiq7760]

please show the tuning process

[@waynebryan9496]

Nice vids for engine builders/tuners, never used haltech, but I've seen em around forever and plenty of sr20 guys lovem.

[@Muffin_Masher]

awesome video and explanation Scotty. I like your videos more this length and in depth than the 3minute teasers ;-)

[@H3kler]

I've got a Sprint RE in my NA 13b Bridgy. 153RWkW @ 9000 with street legal exhaust. Very happy with the ECU.

[@Liam-B]

Haltech: These aussies really know wtf is up.

[@haltech]

Yeah we do!

[@rckli]

Doktotbimmer thinks if the units sold don't exceed a certain number, it isn't real or important. For him, only major manufacture sales are indicative of proper technology. In other words, he believes in a childish fallacy where he considers quantity signifies efficacy. Doktor, do you comprehend that car companies do no symbolize the country? I am from puerto rico: Zero car manufacturers. Yet i see every year when the usa vs pr event occurs, no one says "nah, y'all don't have any car manufacturers." Fuck that, companies like haltec make it so you can customize your car. P.s. You should review the history of cars and recognize the markets as the main driving force, not the cars themselves. There's plenty of cars that sell that shouldn't have sold well and other cars that were amazing but never sold at all. Thems the breaks, kid. You bitching on this page so odd

[@zakzbroja]

doktobimmer Very close minded, I dont get why people like you bother saying stupid shit

[@zakzbroja]

Again, more stupid shit, at the time Australia was the first to do many things and innovate, the only reason we dont have an industry is because it is a lot cheaper to have factories elsewhere for those companies.

[@xkexke8081]

@@doktorbimmer So much condescension, and so many assumptions in so few words... DOKTERBIMMER IS A FAKE ENGINEER Allow me to enlighten you; I have not compared it to a 2 stroke in any comments here (though the comparison is entirely valid). I'm not a kid, I'm an Aerospace powerplant development engineer, and a former Mazda technician. I have a comprehensive understanding of the Wankel rotary engine (though I'm not nearly pretentious enough to use non English initials for it when communicating in English). Contrary to popular belief, this engine is not an occult entity of magic and mystery, it is an internal combustion engine. Different in that it is a constant volume pumping unit, and non-reciprocating, but still just an engine that translates thermal expansion into rotational motion like all the others. Don't be an arse.

[@donovansmith1548]

Thank you Scott I learned a lot keep doing a good job I am a mechanic but never work on a rotary engine so I want to learn more about it I hope you can help

[@JackNickles]

i would love follow up vids about rotary engines. this has been the best presentation ive aeen on youtube.

[@JayCras]

That was a terrific explanation of the Rotory. I think I understand a lot more and hope you do more of the same with (please) Specifics for the RX-8.

[@jazpanoz4996]

Surprising how many rotary owners do not know this 🙄 Great vid. & explanation 🍻

[@scottcureton6055]

Right on, good info. Firing up the 15 plus year old E6K today on T2 and tuning map after fuel upgrade. Now gotta find some roads for a data log. looking for .25 to .40 on the wideband......Thanks

[@playback1926]

Just started tuning my rx8 yesterday wow, vid came at the right time :D

[@drantman]

Interesting you chose a 270 - 330 injector tuning angle when the original base map from haltech is starts at 50 - 247. will update it and see how it goes

[@absolutepressur]

I've got a correction on how you explain the time intervals. The times you specify are the frequency at which each rotor has a combustion event, not the duration of time for an entire cycle, as you said. The rotor does one full revolution for every three of the eccentric shaft, so each combustion chamber takes 3 shaft revolutions to return to its starting point. That means the cycle time at 6000 rpm is 33ms, but the firing frequency is one third that, at 10ms. The air-fuel mixture actually spends more time in a rotary engine at the same shaft speed.

[@SqubaSquid]

I could listen to Tuning Fork talk all day!

[@carlkuzminski3141]

thanks tuning fork you taught me more about rotary fuel management and ignition then anyone :P keep it up your awesome

[@haltech]

Thanks:) We try! More cool vids to come.

[@GARAGEEP]

Great video's guys, Tech enough to keep me engaged right through to the end!

[@jakubpolomsky]

Whaaat Scott has own channel!!! Sooo excited to find out!! Very informational indeed. Not owning any rotary, but the idea of a/f ratio was unclear to me until this point. Tonight my ECU will get an upgrade :D

[@louisbou5906]

I don't understand the hate walkers get. My dad has an rx8 that we lpg converted and it as reliable as anything, and with that sound you just can't not love them. And come on 3 moving parts they are just so easy to build and rebuild. Personally I'd have a rotary over piston any day, don't hate it until you've tried it!!!

[@SkylineFTW97]

You're spot on about the moving parts point. I think I know why most people have had problems with rotaries. They don't know that you have to treat them like 2-stroke engines. That you have to let them warm up to avoid flooding. That you have to add oil more frequently. And that you will have to rebuild them more often than a reciprocating engine (even though as you mentioned, they only have 3 moving parts, so it should be incredibly easy).

[@louisbou5906]

Yeh and the rewards for all the work outweighs the downsides. The sound of them.

[@isaac_a]

hey man, I have an rx8 coming today. what do you mean lpg converted?

[@louisbou5906]

Isaac Abraham the engine is lpg converted so it runs on lpg. Lpg is a petrol alternative that you can buy at petrol stations in the uk, it is half the price and has very similar consumption so gives very similar mpg.

[@SuprSi]

lpg is dry so won't help lubricate, and combustion will be hot. I'm not sure lpg is a good idea in a rotary engine :/ Sorry to be a buzz kill.

[@JohnHuijben]

Nice video! Except the part where you need twice the injector size because you need to inject every rotation instead of every other one like you do with a 4-stroke, which isn't true. You do need a bit bigger injector because you have to deal with the injector 'dead-time' twice as often (which is around 1ms per injection, depending on the injector, battery voltage and pressure), and because the rotary is less fuel efficient in general. The amount of injector you need usually ends up around 40% over that of a piston engine. Besides that, great video.

[@JohnSmith-ud9ex]

Enjoying these Scott, good to see you doing more of what you're brilliant at ! : )

[@derekhaddon4622]

Nice to see factory Madaz rims. MINTA> and nice to see you can explain a graph backwards.

[@ReGarage]

i agree in everything BUT i think that the A/F ratio does give more horsepower. going from 10.5 to 11.5 afr gives plenty of power. going 12 or above you lose power. thats what i have experienced firsthand while tuning my rx7 fd

[@deanphillips4407]

Cheers Scott. Very informative. My old 48 IDA Weber and locked RX7 dizzy could never deliver what's available now. Wishing I never sold my 74 RX4.

[@danieldoran199]

This video makes me want to swap my rx8 to an rx7...shame the insurance is so astronomical in the UK, great video! Cheers!

[@Flyingdutchy33]

As an owner of both, I highly recommend doing this. Love the 8, but it just lacks the power. Great for some B roads though.

[@Otie64]

not so much about the lack of power but aesthetics for me, lmao RX-7 FDs are probably the nicest looking cars there are in my opinion, RX-8s look very pedestrian in comparison

[@Flyingdutchy33]

Yeah they are a little more "common-looking" and less exotic for sure. BUT, you can still make them look more decent than most of the stuff out there, if you make it look cleaner. I get compliments all the time. I also really like the interior build quality if you have one without the pop-up gps thing. But, ultimately, the 7 is looking so freaking nice that any comparison with it is quite unfair imo.

[@rckli]

Rx7 was a two seater racer, the rx8 was a family sedan. Yes, Doktor, thank you for pointing out the larger car with more seats and safety equipment is larger. Now, for some odd reason, you're making a claim that the Renesis had less torque than an fd or an fc....just....sad

[@izayoiaifuyu]

Insurance companies will never know if you do a 13B or 20B-REW swap, it's still an RX-8 to them. You don't have to, by any means at all, disclose modifications

[@IronBroadsword1]

Fantastic video, it's very interesting to learn about rotary engines and how they differ from piston engines!

[@haltech]

+IronBroadsword1 They certainly are interesting engines and largely misunderstood by the non-rotary folk:)

[@rckli]

Nah, it's a rotary engine because it uses rotoids in if use. The "rotary engines" of the plane era had pistons. It's a common misconception amongst plane fanatics. See, yours rotates, so it is a rotary engine. Ours has rotoids and rotates, so it is a rotary engine. It is like calling "rock and roll" rock music, even though modern rock is very different. I recommend you use modern terms, rather than this silly word play you use. It is like the people who use "gay" to mean happy in a gay bar. You know what people mean by gay based on the setting and context. Here, we have people on a wankel rotary video calling it a rotary. Everyone here expects you to understand he means a wankel when he says rotary...it is a bit sad you soent so much time in the comments attempting to correct people for something you're at fault for

[@sandervanderkammen9230]

@@rckli Only amateurs like you confuse the difference between a Rotary type engine and a Wankel KKM engine.. The Wankel KKM57 is not a Rotary type engine...its a *Orbiting Piston Engine*

[@sandervanderkammen9230]

@@rckli You obviously don't have any formal education or professional experience in automotive or aerospace engineering... Please stop spreading your lies and misinformation about Wankel engines.

[@kuromurasaki5273]

I'd love you and the MCM boys to work on a RX-8 ;) btw, wish I lived on that giant island in the south so I could have you work on my car. Much respect for you.

[@glennp1690]

Excellent video Scott,nice to see some rotary love :)

[@sandervanderkammen9230]

Haltech is now doing great stuff with LS swaps.. It's the future of aftermarket performance.

[@ericmiranda9841]

A rotor is a piston, instead of going up an down, or sideways. This rotor spin on a centric, that reduce space between pistons, on conventional engine's. Like the 6 cylinders. Great video..

[@rckli]

Take note, the writer used a simile, doktorbimmer. He said it was "like" a piston, not an actual piston as you've stated previously. We have words to label objects and the wankel has "rotoids" not pistons

[@xkexke8081]

​ nan3r doktorbimmer there is something seriously wrong with you. Like, really wrong with you PS, wrong guy, I was never even part of that argument. But that doesn't really even matter cause you're obviously nuts

[@sandervanderkammen9230]

The Wankel KKM57 had pistons... its right in the name and the description in the patent filing.

[@sandervanderkammen9230]

@@rckli only the Wankel DKM54 has a rotor... the KKM57 has pistons... *It's right in the name!!!*

[@rckli]

@@sandervanderkammen9230 you say this to say….? It’s not like you’re saying anything of relevance - plus my message was 4 years ago to an online troll who’s narcissism led him to following me into several comments sections - he thinks he upsets people by making a fool of himself 🤷🏾‍♀️

[@wannabBIGA]

excellent vid, gave some great insight into rotors as i have not had a great deal of hands on experience

[@mugshotmarley]

Tuning fork!

[@steves6378]

I love the technical details.

[@litr0m]

Scott is a genius/mastermind. I like to follow him at MCM. I would like to tune him my 05 WRX but i'm from Germany so it won't happen :( Regards Thomas

[@XJLuxury]

It's very cool you got all the technical details nice video

[@JSBautomotive]

Tuning Fork Loves the Doritos like a true Aussie!

[@OverpassVisuals]

Very informational stuff. Thanks, Scott! :)

[@EDWARD9599]

Fantastic even a lay man like me could understand ,I.m seriously thinking of getting one

[@Driftmaster666]

Is it really right to set a rotary on sequential injection with a haltech? I read something about it would only inject every second cycle...so I set mine to semi-seqential and it idled better... but now I read that the base map injection angle must be far off with 70°...so maybe I was mislead? I have to try this today ;-)

[@alexander_ford_]

Very informative. Thanks! I just picked up my first Rotary car and it has a Haltech EK6 in it. Quite old I know. But hopefully I can use some of the tips you’ve given here and transfer them to success with the EK6

[@alexander_ford_]

doktorbimmer yes. Not sure what you mean by Adams farewell.

[@alexander_ford_]

doktorbimmer was not aware of what you are referring to till now.

[@rckli]

He is a troll. He does not like the rotary engine as it clearly upsets him when others do. He just says "they can't handle heat" as an excuse then says Mazda stopped production so the engine is bad as well. I've been trying to get him to state something other than opinion now for the past few days. Good luck

[@rckli]

P.s. The Adams was a piston engine, no rotoids within it. A rotary car, yes, but not a rotary powered car, you need rotoids for that. Try again Doktorbimmer. You're in a rotary page where everyone is talking about engines with rotoids in it. You're the only one talking piston engines

[@sandervanderkammen9230]

@@rckli *Adams-Farwell was a ROTARY ENGINE..* Anyone that has even rudimentary knowledge of engineering should understand the difference between a Rotary type engine and a Wankel KKM engine. Anyone questions lad???

[@ovalwingnut]

I APPROVED OF THIS VIDEO AND ITS CONTENTS 👍😎

[@Akira-nw4jl]

Great informative video. Wouldn't a multi spark system work better in this engine?

[@GMWsho]

Very informative. I didn't know much about rotary's

[@RaksasaMentawai]

Love your work Scotty.... Please make me a Haltech motorcycle programmable ecu. I want to control my engines more than 5 steps

[@MegamanEXEv2]

Scotty I could listen to you explain anything mate.

[@AdReillo]

Question. Why is he/you comparing a 3 rotor engine (2 liter) to a six cylinder? The rotor only spins a third of the speed of the e-shaft so.... 9k (redline) is only 3k (rotor speed). Yes, the rotor is doing triple duty each rotation, but it's never experiencing 9k rotations per minute. With that said here is my 2nd question: Wouldn't the rotary tuning be focusing on the rotations of the rotors and not the rotations of the e-shaft? Thanks for you time!

[@jamesannis5372]

We run premix. I should i be running a greater fuel pressure/injector size to accomodate the effect of 2stroke oil on octane?

[@xkexke8081]

@@doktorbimmer is dumb troll boy az616578.vo.msecnd.net/files/2016/08/27/6360787077700554381193066848_Internet-Troll.jpg

[@El_Chompo]

On regular car reviews he said that rotarys tend to run very hot and that it's a constant battle when driving one. He even opens the hood when he's done driving every time. Do they run hotter than the average piston engine? And is this actually a problem or was it exaggerated?

[@Ryncewind0]

Yes they run hotter than piston engines. with a good exhaust, its not really a problem.

[@BrianOfAteionas]

I'd be interested to know more about this as well. My brother owns an rx-8 and was telling me something about the models with only one oil cooler having serious overheating issues, but I'm really not sure if the models with 2 are really that much better. So far my brother hasn't had any issues (with 2 oil coolers), but it's only been a couple weeks where it's been 85 degrees here so far. Despite that, I get the impression that it still worries him.

[@Ryncewind0]

I can't comment specifically on the oil cooling of RX-8's as I don't know enough about that model. What I can tell you is that Rotary engines run hotter than piston engines due to the fact a lot of the exhaust stroke goes into the exhaust before its fully burnt, if left any longer inside the housing the exhaust cycle can have a negative effect on the rotor face, effectively pushing the rotor backwards and making you lose power, to counter this the timing means combustion is still happening at the start of the exhaust stroke. This is why exhausts on rotary engines are way hotter than on a piston engine. Another reason for higher heat in a rotary than in a piston engine is constantly in a firring cycle unlike a piston engine with 4 stokes. That being said, the actual engine temperature is not that much higher than a piston engine. But the exhaust temperature is much higher. I hope i have answered a question or 2 you may of had. If you have questions feel free to ask and i'll try my best to answer them to the best of my ability.

[@BrianOfAteionas]

That makes sense. I didn't know about the exhaust. I'm mainly just hoping some rx-8 owners will respond with their experiences in hot weather.

[@chrisp2843]

slap on a thicker radiator. i did it on mine and temps so far have been lower than half. not that it had any overheating issues, the stock had a leak on the top plastic cover so i went ahead and replace em, took a few days to sort it out in my garage with my dad. oh and i changed to vented hood with really helps when stuck in traffic. etc. also i bought an oil cooler fan i have yet to install.

[@Thesaviorsway]

So rx8 does 238hp with streetport racing beat about 270 hp. There is some porting to get a little more from intake ports not just exhaust ports only. The intake could gain about 5hp and headers and exhaust possibly 10 maybe 15hp. Then the ecu and tune as well with reliable seals and compression should get an extra 10 to 25 hp from stock ecu restriction. Also increasing rpm from 9000 to 11000-12000 and 4.77 rear should help getting 300hp?

[@andersanders845]

Great video.. Question: If you keep the catalytic converter on the car, wount you "need" to be at lambda1, 14.7:1, to keep the cats work at its best during crusing speed( not WOT ofc )? You said around 12-13 during those conditions in the video. Thanks

[@bobbyd642]

So a 2 liter vs a 3 liter. Maybe a retro spec of a quad rotor would be a better comparison??

[@liboy9844]

Afaik, the ‘closer’ the ignition split timing the safer for the engine. Opposite of what was discussed. In fact, early mazda sponsored race engines had ‘zero’ split ( both leading and trailing fired at the same time) Just my 2c.

[@PAINACAB]

love your work Scott.

[@Pigeonbutter8790]

I'd love to build an FB RX-7. Such cool little cars

[@Dagr8soldjer]

I wish more tuners were this knowledgable, I’m rebuilding my renesis engine at the moment and street porting it and switching to ceramic apex seals but I am terrified that when I get it tuned, the tuner might just chase power or not be as conservative as I’d like, wish I lived in Australia, I’d go to Scott every time I need a tune done 👌

[@Dagr8soldjer]

doktorbimmer firstly, that would eliminate diversity and that attitude is the automotive equivalent of Hitler’s Aryan race. Eliminating everything that isn’t what one person likes. Secondly, that was years ago. You do realise that rich people in the UK emigrate to Australia because the property market is better and the economy is better, but hey live in the past and a sea of ignorance 😂 rotary’s aren’t unreliable. Bad rotary owners have just never heard of “a bad workman blames his tools” and subsequently spread a bullshit reputation about rotary unreliability because they are too proud to accept responsibility for breaking it. If you are too mechanically ignorant and don’t know much about cars then buy a piston driven car. Don’t buy a rotary and then blame the car when it breaks just because you are too ill equipped to maintain it. It’s the automotive equivalent of a poor man deciding to date a gold digger. He will never be able to maintain the relationship because he hasn’t got the means to do so. Rotary’s are unique, have character and provide a completely unique power production and delivery. To say that you’d rather a 2JZ or an LS which both only offer the same experience that dozens of other engines offer, sounds dreary as hell. A true car enthusiast has no worries about rebuilding engines especially if it is the price they have to pay every 80,000-120,000 miles for a completely unique and incredible experience. Any true car enthusiast will make that deal any day.

[@Dagr8soldjer]

doktorbimmer yes. Relevant?

[@Dagr8soldjer]

doktorbimmer I sounded like I was a homosexual? Because sexual attraction to the same gender is determined by how you sound 😂 please elaborate? Or make yourself sound like even more of an idiot...same thing really 😂

[@Dagr8soldjer]

doktorbimmer I only ask because it sounds like you have adopted homosexuality as an insult to people who are more well spoken than you, as a defence mechanism to overcome your insecurity about your lack of independence, intelligence or ability with girls 😂 so you immediately resort to homophobia whenever you feel threatened 😂😂😂 it’s also ironic because you thinking that homosexuality is characterised by certain speech or behaviours or even the idea that homosexuality is beneath you is highly indicative of poor understanding and intelligence. Bit of advice, stop giving a fuck what others think, stop thinking that you have to meet a certain criteria to be manly and start being yourself and not giving a fuck what other people think. Sticking to your principles and saying fuck you to anyone who questions them is manly....acting tough and being homophobic and insecure and afraid of being yourself so you behave how you think others want you to behave because they tell you it’s more manly that way, is pathetic and ironic and laughable 😂 little bitches act tough, start fights and use homophobic slurs. Real men don’t give a fuck what little 12 year old troll pussies say to them over the internet. See you remind me of a gypsy Irish kid I bumped into the other day. The little shit was being a dick to everyone in a restaurant. I was sat there with my two mates and my girlfriend. The boy asks my mate if he likes boys or girls. My mate says “both”. He did this to show the mouthy teenager that he was more manly than all the bullshitters who say being gay is wrong. Is my mate gay. No. But he said he was Bi sexual just to show he was confident and dominant and didn’t give a fuck what people thought of him. You need to be more like me and my mates. Stop giving a fuck about other people and stop thinking you are the shit. Because I guarantee you, you’re not. Always a bigger fish my friend. Just enjoy your life and stop trying to be better than others. Life’s not a movie and you aren’t the action star played by Bruce Willis 😂

[@Dagr8soldjer]

doktorbimmer I must be gay? How did you draw that conclusion. I’d like an in depth explanation if you are capable of such things that is 😂 go on mate? Explain how you came to the well informed decision that a stranger who you have never met must be gay? Someone who’s sexual habits you are not aware of. So either you were using it as an insult in some sort of hope that I was as ape like as you and so stupid that I would think it was offensive...or you are superhuman and know shit that even I don’t know 😂😂

[@msengineeringdavid3148]

Can you explain to me what math did you do to come up with the interval of injection time for a rotary engine ? ''Half the the available processing time''

[@moebel7051]

Your a legend Scott thank you for all the great and reliable content

[@rockydee2967]

Great vid. This guy kinda favors Daniel Stern

[@DudeRobz]

When you were talking about a rotary requiring something like 2000cc injectors for 400kW, was that 2000cc figure for each individual injector or the sum of volume flow over all the injectors? An NA rotary with 2000cc injectors seems like a lot to me, but then again I guess that is 400kW without boost.

[@ismaelcandia1915]

so what exactly is the ignition process for tuning split timing?do you set split timing map to "0" and just tune leading timing first and then start adding split to see if power increases?i know u mentioned to start with 10 deg on split as a starting point,but i want to get how split timing is determined for a specific engine.and how is having a low split value will damage the engine?

[@speedysandisk78]

Will it fit in my Honda?

[@darianistead2239]

I wished Scott tuned my rotary. my 13b turbo made 509whp@18psi but I think its blown, it runs a haltech too lol.. I haven't stripped it down yet but am expecting the worst. I'm guessing it's due to the tune or not using synthetic premix with E85 and possibly blocking a 2200cc injector.. It's only done 2k since rebuild, dowelled and extend port😢

[@T_3rR4h]

If only fermented dinosaur juice was cheaper I'd have owned own an RX7 over my s15.... Such a beautiful car, those rotary sounds

[@r1yamahamini]

This helps a lot :) I have been trying to turbo my Renesis for five years with no luck. Do you know what the trigger angle is for the Renesis?, I have it set at 65°

[@haltech]

+Punchy LightBeer Trigger angle must be set using a timing light; lock the timing in the software, and check the timing light flashes on the lock value on the balancer. If it does not match, adjust the trigger angle until it does.

[@r1yamahamini]

+haltechecu ... Ok thanks. I did that after watching your how to video:) . I got 65° and wanted to double check.

[@davidgarrison6936]

4 yrs into my first RX-8. 2004 GT 6 speed m/t. it had Some prior issues. had run warm. not over-heated to salespersons knowledge and only person i knew that ever worked on Wankels... so...i had much done after i went from initial 86k. (8 yrs had passed,so 100,000 mi. warranty expired). but WOW...I SO LOVE MY CAR. got almost 123,000 on it...had some COLD START probs.....RIGHT when the Takeda AIRBAG debacle started....which the MAZDA RX-8 was part of....nevertheless,i am into ORIGINAL stuff. keeping it Original... So i have purchased a 2008 from a 2008 RX-8,and its going in now. Sending my ORIGINAL to be TOP TIER REBUILT... and will run my 2008 for a yr or so....then,back in goes the ORIGINAL Wankel. I NEED YOUR VIDEOS BADLY! i am a total ROOKIE...EVEN after all i just said. my goal...to Care better for my Wankels... learn more...and get MORE ROTARY Vehicles.

[@fd3s64]

My friend asked if you can add another engine pulley to compensate for the 10ms engine cycle compared to Otto engine 4 stroke 20ms cycle. Would that work instead of changing to x2 size injectors?

[@zannisgoutis2869]

The ignition timing its similar of two stroke engine?

[@haltech]

Yes, rotaries are similar to two strokes in that respect.

[@sandervanderkammen9230]

@@haltech Wankel engines are 4 stroke... not 2 stroke.

[@erniebrinkrotaryhemi7336]

The Holy Grail Of Rotary Engines - SkyActiv-X

[@Walaboro]

So which ecu do you recommend, is a 750 suitable for a 1.3-2L Dorito. Or will it require a full glory 2500. Or one of your sport line ecu.

[@haltech]

+Walaboro The Elite 750 will run both 2- and 3-rotor engines with 2 stages of injection. For advanced features such as oil metering pump control, closed-loop boost control etc, the Elite 2500 will be required.

[@Walaboro]

thanks appreciate it! friend is doing up an older Rx7 and ive been trying to get him to go with one of your products

[@erniebrinkrotaryhemi7336]

half combustion is one way trialing side leading side the other way?

[@jesusjcrrotary9271]

So is that injector timing set up as degrees BTDC?

[@mfvigilante]

How much will it be to fix theses codes and can the be done with out a mechanic. (P0420, P0661, P0076) it’s a 04 rx8 in good body condition for 2,500

[@MRtucnakCZE]

Hello Scott, thanks for the vid man, you are great! I hope you or someone similary engine/technicly based and wise person can answer me. I'm looking for project, engine swap to be honest and everywhere i look, i get alot of dissapointment. I own VW Golf 4ish car, iron 1.6 8v transverse engine, thats putting around 60kW/135nm on the table. I want to take this number and pretty much triple it (some day). I'm trying to get some engine, that would fit in the enginebay without problems, preferably with turbo (choo choo) and not ruin my budget. However, i don't want to go the VW way, and swap 1.8T/G40/VR6 or similar in there. Japan way seems to be reliable and powerful enough. I though about 4GZE/7GZE and SR20VET so far, but I'm affraid that the SR20 wont fit at all. Parameters to (preferably) aim for, i hope it will help: Belt (Chain) driven 16v, good overall tuneability (let's say 400hp with minor modifications), good reliability (that can withstand years of dailying), size (that will fit my engine bay), reasonable price and gas mileage. Can somebody help me out?

[@MIKE192rotary]

Very well explained!!!! Thank you!!!

[@Slowpoke5055]

Thank you for the video Mr. Haltech. It is very clear. However I have one question. Where or what triggers the release of the spark to the spark plug(s)? In the piston engine the spark is triggered by the crankshaft (sensor) or the camshaft (sensor). Draw me a picture, please. Thank You, Robert :-)

[@haltech]

The spark timing is controlled by the ECU, based on inputs from the engine position and speed sensors. This is the same for Rotary and Piston engines, between them its just a differing layout of sensors and spark timing.

[@Slowpoke5055]

Thank You. Have all of the Rotary had ECU's? What about before. How did they get the fire trigger?

[@EM6285]

Mazda 13B engine has 6 combustion chambers (each rotor side forms a combustion chamber and go trough the 4 stroke Otto cycle as its moves inside its housing) Great to hear you compare it to a TOYOTA 2JZ-GTE 6 cylinder engine because they are equivalent in terms of working combustion chambers. 13B with 6 combustion chambers 2JZ-GTE with 6 combustion chambers. 13B is not equivalent to a 4 cylinder engine, neither because it uses 4 spark plugs and neither because its ignition events are at each 180° of eccentric shaft rotation (4 cylinder engines fire an ignition event each 180° of crankshaft rotation) because in a Mazda 13B engine you got 6 ignition times in its Thermodynamic Cycle, NOT 4! Displacement for Mazda 13B engines is not the nominal displacement of "1308cc" (1.3L) Mazda quoted (They did it to skip paying higher taxes per each engine produced in Japan because there was an Engine Taxation Law) Mazda just counted the work (combustion cycle) done by just one side of each rotor (2 combustion chambers total) and skipped the other 2 sides per rotor (4 combustion chambers total) That's how they gave just 1/3 of its real value (set by its thermodynamic cycle) On a 13B engine there are 6 combustion chambers that displace 654cc each one to go trough a 4 stroke Otto Cycle and it takes 1080° rotation of its eccentric shaft for all them 6 combustion chambers to do so. 654cc x 6 = 3924cc (3.9L) @ 1080° eccentric shaft rotation. Ignition is fired at every 180° of eccentric shaft rotation and there are 6 ignition events on its Thermodynamic Cycle so; 180° x 6 = 1080° (3 rotations of 360°) 13B is not a 1308cc (1.3L) because Mazda said so to cheat Japan's engine taxation laws. It is neither a 2616cc (2.6 liter) because S.A.E used the 720° of the Thermodynamic Cycle of 4 stroke piston engines to give the Wankel Rotary Engine an "Equivalent Displacement" because at 720° of eccentric shaft rotation in a 13B engine, 2 sides per rotor (4 combustion chambers total) have completed a 4 stroke Otto cycle; 654cc x 4 = 2616cc (2.6L) @ 720° of eccentric shaft rotation. Ignition at every 180° of eccentric shaft rotation / 4 igniton events 180° x 4 = 720° Try to make a 13B 2 rotor engine to spin and keep in steady idle with just one side of each rotor (2 combustion chambers) completing a 4 stroke Otto cycle (displacing just 1308cc / 1.3L, 1/3 of its Thermodynamic Cycle) and the other 2 sides of each rotor (4 combustion chambers) not doing their 4 stroke Otto Cycle events. IT WON'T WORK BECAUSE IT IS NOT A 1308cc 1.3L Remove an Apex seal or program the ignition to fire for just one side of each rotor....It won't spin trying to displace just 1308cc (1.3L) It is a 3.9L displacement engine in a compact package.

[@jmirsp4z]

"13B is not equivalent to a 4 cylinder engine, neither because it uses 4 spark plugs" so a 4 cylinder alfa romeo twin spark is actually a straight 8 or?

[@sandervanderkammen9230]

@@jmirsp4z Unless they fire more than once every 720°??? No, it's a 4 cylinder.

[@furiouswolf777voodoo4]

Wonder if the 9k redline has alot to do with wear???

[@talipmalkoc988]

Thanks to you

[@derekhaddon4622]

My 2 rotor has a steady peak upwards at 7000 RPM till 9800 RPM, that is not the problem, between 6200 RPM and 7950 RPM there is a downturn, All I can think is that this is a boost issue (bleeding).

[@pine51]

hey tuning fork your a genius :)

[@msengineeringdavid3702]

The rotor moves at 1/3rd the speed of the eccentric shaft so how is your math being applied to injection time?

[@greaseball-r2f]

Hey man!I have a question,how can I tune ignition timing and air/fuel ratio right without problems? I am interested to tune a car in near future but I don't know exactly how to tune it right. Thanks!!

[@haltech]

+Marius Arion That is not a question that can be answered in a simple post. There are courses that teach you the basics of tuning, and that general knowledge can then be applied to your particular application. Look up EFI University or HP Academy if you're interested.

[@timemachine930]

best explanation ever. Add to favorite

[@speedrider0101]

I love your RX-7!!!

[@ashteregg2133]

the injector angle is that end of injection ?

[@droman608]

Great video. Love it!

[@harindugamlath]

Super stuff! Thanks!

[@razor_5521]

You're not gonna find anything of worth in the "comments below" as everyone thinks they're an expert but never tuned nor built a rotary engine.

[@derpinbird1180]

Pretty much general rule about any youtube video unless your asking op a question

[@rckli]

Rebuilt my 13b with a friend at 200,000. Apex seals were still in decent condition, no issues with anything internal.

[@rckli]

Obsolete? How is something still being used obsolete? You should review the definition of the word. I think you mean "no longer manufactured by Mazda." Much more accurate than the half truth "obsolete" you enjoy repeating. Engine has its use and is being produced by other companies. Oh, you meant your rotary plane engines? Yeah, those are obsolete. The wankel is alive and well :)

[@HastelloyC276]

@@doktorbimmer it might be but it's still a pretty interesting piece of technology

[@HastelloyC276]

@@doktorbimmer yup that's actually really cool I was looking into an rx8 it gets a lot of hate but personally I like the car and its engine really sets it apart, maybe sometime in the future the rotary will come back more efficient and powerful 😃

[@DerringtonLatour]

Thank you! 😁

[@ElmarDylong]

That was a lot of usefull information, thank you! :-)

[@nongbuatuning6919]

Hello, thanks for the video, very informative for a rotor engine beginner like me. What can I do to make power gains for Mazda RX8 13B N/A? Is there a turbo or supercharger kit for this engine?

[@sandervanderkammen9230]

LS swap.. Or just buy a real performance car.

[@DracolegacyOfficial]

this made me want a rotary swap in my car even more than i already did, if only i could afford one.... and get you guys to tune the damn thing for me.

[@christophermendoza4675]

I have a question do you have names of shops or people in the states that you would recommend that know how to tune a rotary? I haven't had one in a few years and looking to build a 20b FD. I'm in the northeast in Massachusetts and from past experiences a lot of people around hear like to talk the talk but when it came down to it they were just taking people's money and then just disappearing. I know a lot of people that got screwed over the years me included. just trying to do all my research beforehand.

[@isaelrx77]

My dad and uncle both work on rotarys and we have many rx7s street and drag but if its a shop youre looking for there is one close by from me and they specialize in rotarys dont know if theyre good at what they do because weve never brought any of our cars there but you could give them a call you just gotta look em up they are called JPR imports they are located in blackwood, new jersey

[@Noswolf]

good video! cant wait to see next one!