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@victorwess961 27 күн бұрын
You have the dyno numbers/sheets would love to see them.
@kevinshchepanik5378 Ай бұрын
Sounds like a beast!
@hammerdownfabrication Ай бұрын
Sounds perfect
@LowMedow Ай бұрын
Omg that sound. 🛐
@Vipurs Ай бұрын
Wish it was a longer video, sounds heavenly.
@JonHop1 Ай бұрын
sounds fantastic!
@rars0n Ай бұрын
Awesome!
@shiks98 Ай бұрын
Wow, you definitely choose the best sounding engine configurations for your projects👏🏼
@kevinconan9550 2 ай бұрын
Can a 4 rotor be use in city driving like if there is sudden traffic? Won't it get overheat?
@luimedina5542 2 ай бұрын
Why are short crank 3 rotors not good for boost but 4 rotors can handle boost? they both have a intermediate plate machined for stationary gears
@pisanellodipucciopisano8353 2 ай бұрын
I have always LOVED everything about rotary engines like wankels. They really are in their own class of internal combustion engines. I especially LOVE 787B and other 4-rotors. I feel like they are truly in their own league. Your car is an amazing most unique artifacts in automotive history. I'm blessed having found out about you and your incredible "Iron Man -suit" even though only today. Thank GOD you got it back. ❤❤❤
@user-vj2nq1xm1h 2 ай бұрын
Well at least you're rich and you you can replace most
@user-vj2nq1xm1h 2 ай бұрын
Glad you found it not ment to happen it just happens same thing happened to me on the highway went to get tire came back and my trailer was broken into and stole my brand new 10000.dollar motor never was found f
@christianmaldonado3367 2 ай бұрын
Thanks for the content, love learning as much as I could about these rotary engines
@OriginalAse 2 ай бұрын
Does anyone know the song being played at the end of the video?
@user-vj2nq1xm1h 3 ай бұрын
Would ya look at that Nice street legal and imsa loud
@mazdaN-A_26b 3 ай бұрын
i heard the engine was fro impossiblerx7 what happened to the engine
@jambertin54 3 ай бұрын
This car is so fucking sick!
@rx7civic 4 ай бұрын
God bless Amen 🙏
@JeronWhite 4 ай бұрын
Nice kw
@ChErRyaVe20pK 4 ай бұрын
What type of ECU are you running in your current 4 rotor racecar?
@John-Drives-Cars 5 ай бұрын
See you this weekend!
@Wankelshop 5 ай бұрын
Best wishes from the german rotorheads
@Charles-qt2gx 5 ай бұрын
Cool old KW project.
@nydrell1969 5 ай бұрын
Still watching a masterpiece in 2024
@bobdavis2807 5 ай бұрын
Why did you not do the whole engine out of billet would the middle stationary gears crack easier because they are cast
@Deeznutzyamouth 5 ай бұрын
My dream a datsun 510 with this r26b 10k rpm.. heaven.
@user-xs9rd1hv4g 6 ай бұрын
Daaam...having the knowledge and ability of building a rotory engine of 2,4,5,6 rotors is an art and gotta be gifted of souuu much skillz...i wud of rebuilted my engine and i have to depend on a mechanic to do this rebuild on my favorite car.🫤🫤
@summerholiday2 7 ай бұрын
I’m amazed at how much is running through that transaxle! You can definitely see why they’re Uber expensive!
@stevegaetjens942 7 ай бұрын
To make the rotary work, could you make a 'drop-adapter plate'? Mazda bolt circle on one side, Xtrac on the other, with quick change drop gear between the 2 sides.
@GTORx7 7 ай бұрын
technically probably so. There is a good amount of space between the engine and transmission.
@wrighty338 7 ай бұрын
Very simple design the way things should be
@cameronmacswain4766 7 ай бұрын
So much knowlege! Your amazing logan keep the good content comin 🤘
@GTORx7 7 ай бұрын
Thanks buddy!
@JonHop1 7 ай бұрын
Is that a 386 xtrac? 5 or 6speed?
@Coffe- 7 ай бұрын
Super cool!
@Neil-ru7kw 7 ай бұрын
You need to start your vids with an intro , who you are , what the vid will be about , etc.
@Vipurs 7 ай бұрын
Good stuff
@alexkyriakidis6580 7 ай бұрын
If you use a 12a intermedia iron you can solve the intake side port problem?
@GTORx7 7 ай бұрын
No, still not the same size as the secondary runners. Additionally the coolant seals are not in the irons.
@johnlorch3484 7 ай бұрын
Extremely clean and well done.
@sayers_repairs 8 ай бұрын
Very cool! I take my son to AMA vintage days at mid ohio. Maybe one day I can take the rx5 around that track.
@sayers_repairs 8 ай бұрын
You mentioned that even if something bad happens, that it is for a reason. I try to live with that in my mind, but emotions get the best of me most times. I have to say how you handled the situation is very inspiring to me. At the beginning of your story, I was thinking of how i would have overreacted to blowing 2 tires on the trailer, but look how it worked in your favor. Glad you recovered what you did.
@ChErRyaVe20pK 8 ай бұрын
Why does scoots 4 rotor have that smooth high rpm 787b sound while yours sounds similar but kinda raspier like a v8 f1? is this only to do with the exhaust?
@fourtysevennn 8 ай бұрын
I hope he answers this too! i am really interested what is the difference between Yukis Kamakuras 4 rotor by scoot & defined autoworks
@GTORx7 7 ай бұрын
Definitely the exhaust is unique on my Rx7 compared to all the others. It's a 4-2-1 system, while the 4 to 1 collection is everyone else. 4-2-1 has proven to make the most power, but uses more fuel. This is why the 787b did not go with this setup.
@Raczoon 8 ай бұрын
Pretty! All that advanced work you do, and here in SC I can't even find a tuner that works on rotaries.
@brianfordham4167 8 ай бұрын
Fantastic info. Out of curisoty do you prefer the single or the two piece ceramic seals?
@GTORx7 7 ай бұрын
2 piece for sure. Best compression.
@galognu 8 ай бұрын
Awesome Logan.
@jnmason6283 8 ай бұрын
I've been looking at the evolution of Defined Autoworks for the last 10 years or so, always impressed by the creative solutions developped for engine and chassis tech. Props on the work Logan! By wanting to emulate the R26B, were there any plans on creating a variable length intake trumpet system to extend the torque curve? What do you think of Judd's twin roller barrel throttle bodies on their V10 race engines vs the slide throttle? I've read it can be "easier" to get decent drivability from them and less chance of sticking, although they are a bit heavier than slides or butterflies. And I've always wondered if exhaust power valves (like on modern 2-stroke sleds) would be beneficial on a rotary... Arctic Cat's latest 858 C-TEC2 has an ingenious servo-actuated power valve system. The idea would be to somewhat control the amount of overlap on a full PP rotary to get more torque and response on the low-end and make it a bit more streetable (might be useless for a racecar, but curious nonetheless). Might make for an overly complex exhaust sleeve, but I haven't seen anything like this tried on a rotary through 60 years of patents. Cheers mate!
@GTORx7 8 ай бұрын
Thanks a lot! With any luck at all I hope to release videos and changes I've done over the years but never have shared. In short there is already a variable intake on my car at the moment. The controls for it are being refined so I trust its operation on the race track. So far on the dyno its been incredible. Twin roller intakes are awesome, but weight and space are too large for me to use.
@Subar_Sama 8 ай бұрын
Everyone talks about power, but.. how much torque could a 26B engine make?
@jnmason6283 8 ай бұрын
This engine makes 662 wheel hp at 9200 rpm, that means it's making 378 lb-ft at 9200 at the wheels. I'm guessing the peak torque would be around 6000-6500ish rpm, probably around 430-450 lb-ft at the wheels. Really depends on the application. A 4-rotor built for 10,000 rpm like this one won't be making as much torque as one built for 7500 rpm with much longer runners and port areas designed for low-prm intake velocity.
@GTORx7 8 ай бұрын
Mazda made 450ft-lbs at the crank which is roughly 382tq to the wheels. Mine is right at 400tq to the wheels, or 470ft-lbs at the crank.
@RGHTBrainDesignDrive 8 ай бұрын
Superb video, Logan!
@dragbeast 8 ай бұрын
What did mazda do that was different 30 years ago to make so much power on the Le Mans 26b engine in the 787b?
@GTORx7 8 ай бұрын
They figured out the ideal port timing, intake design, used ceramic apex seals with cermet coated side housings. I've exceeded Mazdas horsepower, but it took a good effort to get there.
@dragbeast 8 ай бұрын
@@GTORx7 You exceeded them on N/A horsepower? How much does your car make? I am a supporter of yours by the way, thanks for the info on this vid !
@GTORx7 8 ай бұрын
@@dragbeast Yes they made 690hp at the crank, Im doing 662hp to the wheels which is 785-790hp range at the crank. 662 is going to be a old number, aiming to make a good amount more. I appreciate the support!
@wrighty338 8 ай бұрын
I like the V-band exhaust and love the slide throttle. Im surprised that such a small dry sump works but it is a small motor overall. Do you have figures on the coolant temp differences between your system and lets say a "stock" 4 rotor coolant system?
@GTORx7 8 ай бұрын
I have never placed a "stock" 4 rotor on a dyno with temperature probes in each housing to see what the difference would be. Possibly in the future I can test this out and give actual number value. I do know that a single temp sensor on the outlet of the waterpump will not show the problems. The rear rotor will start to steam and cavitate, but quickly cools down on its return path to the outlet and factory positioned sensor.
@breakupgoogle 8 ай бұрын
Good tech info