To all the people posting Rob Dahm comments. This is exactly what he wanted. For more shops to build more rotaries and stop acting like there's some secret to building them. To be fair on his defense, he's doing what entire shops do with just 3 or 4 people and he's not a professional. He's just a smart guy with a dream.
Well said my friend it don't matter who us building them just as long as there getting built and people are having fun that's all its all for fun to learning new shit
I mean, these shops have existed before Rob came into the scene, NZ has a shitload of very strong rotary shops that have been around for decades, it's just most mainstream car people don't know about it because NZ is a tiny country with fuckall recognition despite our insanely big car scene.
This sounds nothing like any other engine. It's not the thunderous roar of a V8, not the V10 symphony, the beautiful scream of a V12 or a 4-rotor. This is just pure aggression. I love it.
Its definitely unique...at idle is sounds like a mix of a V8 rumble, with some of the V10 symphony without having the exact sound....and at high rpm it has a mix of a lower V8 sounding rumble mixed with a V12 scream.
@@White1sox PPRE also have built another 6 rotor a few years ago for a guy in China who put it in his RX7, he paid for the whole team to fly there and do it.
I cant say I'm all do or die for the rotor world, I grew up with v8s and that's just what I've always been around, but I can say that's amazing, it sounds amazing, I cant wait to see it make a pass.. who knows I might have to learn some stuff so I will have enough knowledge to start messing with these rotors.. I've built tons of v8s tons of 4cyl motors even inline 6s. First time I saw a rebuild kit for a rotor motor I was confused,$1000 and it was just a small box of washers and O rings lol.. so who knows might be time to learn something new.. but major props to these guys for building such a insane engine
@@chewylewy1714 Love Rob Dahm. First saw him when he took the 2 rotor Corvette to LS Fest. It was awesome seeing him gut his RX7 and start from the ground up preparing the car for AWD and a 4 rotor.
Technically Mazda pulled a sneaky with their capacity measurements so it's closer to 7,848cc given a rotar can fire once per crank rotation while a piston engine requires 2 rotations for the full 4 stroke cycle, which is why rotaries seem to make a lot of power for their quoted size. Also, PPRE's 6 rotor is designed to essentially be two 3 rotors rotated 180° from each other, so for a piston engine comparison you'd have to look at something like a 7.8L V12 which kind of puts the insanity of this engine in such a tiny car into perspective
Due to how the Wankel rotary's combustion cycle works, the real effective displacement is double the "rated displacement". I'll refer you to a good, short technical post explaining why this is true (go here: grassrootsmotorsports.com/forum/off-topic-discussion/dispelling-the-rotary-displacement-myth/43487/page1/ ), and also give you a simple formula for the true working displacement of a Wankel rotary. In short, because the rotors spin at 1/3rd the speed of the eccentric shaft, and because of how the rotors are offset, it gives 720 degrees (2 spins) for 2 combustion cycles to create 1080 degrees (3 spins) of the complete 4-stroke cycle for the eccentric shaft/crankshaft. The formula is: 654cc(chamber volume) * 3(amount of chambers) * (number of rotors) * (2/3) but an easy rule to remember is just double the advertising number.
@Automobile Addict it shouldn't upset anyone, rotaries are a very clever design and do have some benefits over piston engines, especially when it comes to the amount of air they can flow, the more direct conversion to rotating power and the reduced mechanical drag. But comparing power figures to piston engines has to be done with the right displacement comparisons (Craig has commented a much more accurate formula). It's very exciting to see a "1.3L" engine making over 200hp, but it's not actually THAT amazing when the effective displacement is more like 2.6L. Knowing that rotaries actually have much greater displacements than are advertised does explain why a 4 rotor engine (supposedly 2.6L) with a big turbo can throw out well over 1000hp, because it's actually closer to 5.2L in displacement and because rotaries flow so much air they can support very largo turbos. It also explains why fuel consumption is so poor, because a 13b definitely doesn't use gas like a 1.3! Obviously the weak point has always been the seals, but that comes down to the fact they weren't allowed to burn pre mix fuel or oil from factory for emissions legislation
@@petershergold9952 im the only one agreeing with you haha. Its all smoke and mirrors over here. Of course i wouldnt be able to do a 6 rotor if PPRE hadnt done it first. They set the foundation for me to try to improve upon
There several ways you can phase them you can do 2,3 rotors you can do 3,2 rotors you set it as a 2 and 4 rotor or a full 6 rotor just depends on how deep you wanna go and how much power and torque you want
And now a question from a guy who s no clue about rotary engines... I saw the 6 coils in a row. Couldnt they just put individual coils above each spark plug like nowadays? Wouldnt that help for more power???
Wtf are you talking about? I replayed the video like 40 times and theres nothing flying around in that shop bay, you probably just mistook some of the dust and debris floating around
technically since theres 3 "chambers" so to speak, any multiple of 3 would be possible to balance without weights. id imagine its not worth thinking about though
Maybe because watching two blokes put dam water in a radiator and no dyno report at the end is a bit dull. Not to take away from their skills but not very entertaining unlike robs vids . That’s why he has attention 😊
To all the people posting Rob Dahm comments.
This is exactly what he wanted. For more shops to build more rotaries and stop acting like there's some secret to building them. To be fair on his defense, he's doing what entire shops do with just 3 or 4 people and he's not a professional. He's just a smart guy with a dream.
Well said my friend it don't matter who us building them just as long as there getting built and people are having fun that's all its all for fun to learning new shit
Exactly!! I’ve been wanting to see more of this machine for years. Excited to see it back out and running!
@@RobDahm when will this project begin?
After the 4 rotor C8?
I mean, these shops have existed before Rob came into the scene, NZ has a shitload of very strong rotary shops that have been around for decades, it's just most mainstream car people don't know about it because NZ is a tiny country with fuckall recognition despite our insanely big car scene.
As a newzealander I love seeing Rob on TH-cam pushing new boundaries
This sounds nothing like any other engine. It's not the thunderous roar of a V8, not the V10 symphony, the beautiful scream of a V12 or a 4-rotor. This is just pure aggression. I love it.
Its definitely unique...at idle is sounds like a mix of a V8 rumble, with some of the V10 symphony without having the exact sound....and at high rpm it has a mix of a lower V8 sounding rumble mixed with a V12 scream.
Gay
@@liammeharry are u?
It reminds me SO much of the Alfa Romeo 33SC sports racers! Agressive flat-12 esque sound
I know this is way late, but have you heard the 12 rotor? its on youtube
Its stock officer.
😂😂😂
y sure it is....lol
It's true!
You mean the EPA
I'm not parked!
been waiting so long to see this again.
its sounds insane in person.
"there is like no 6 rotor content on TH-cam"
-Rob Dahm
>uploaded 4 weeks
Rob dahm is doing a turbo six rotor, which hasn't been done.
Sofa Kingdom Rob is a beast
there is an bmw m6 whit a 6rotor i have seen it years ago on youtube
@@White1sox PPRE also have built another 6 rotor a few years ago for a guy in China who put it in his RX7, he paid for the whole team to fly there and do it.
Did yall forget to mention that his wanted a billet 6 rotor?
Holy. six and rotors are word I have never imagined to come together. Great engineering guys.
Seriously, that probably the SICKEST hot rod I've ever seen!
*japanese hot rod
Mazda Rx4 coupe 😛😛
it sounds demonic, absolutely unreal
Been hanging out to see an update on this beast, thank you
That’s insane it’s so sad Mazda has given up on the rotary engine thank god guys like you a keeping it alive
One of Mazda’s new hibrids is coming out with a rotary motor
They suck gas so it's just not economically feasible to keep developing the tech commercially, sadly.
@@Ne1vaan well they are bringing it back
I cant say I'm all do or die for the rotor world, I grew up with v8s and that's just what I've always been around, but I can say that's amazing, it sounds amazing, I cant wait to see it make a pass.. who knows I might have to learn some stuff so I will have enough knowledge to start messing with these rotors.. I've built tons of v8s tons of 4cyl motors even inline 6s. First time I saw a rebuild kit for a rotor motor I was confused,$1000 and it was just a small box of washers and O rings lol.. so who knows might be time to learn something new.. but major props to these guys for building such a insane engine
Easier than any piston engine to rebuild.
damn I love how the rotary scene is getting so much attention now, if only I could afford it lol. Hopefully soon. =D
Definitely PPRE need to have a youtube Chanel with some other content like this one.
Definitely cool for a foreigner like me.
They keep their stuff secret
Im pretty sure they do have a channel? At least they used to
We still need to see more of this car !!!
That thing sounds like it's literally tearing the air in half.
Loved every moment, except for the part where split pea soup is being put into the cooling system?!.....did I miss something here?
It’s probably used coolant, if it’s just for testing
😂😂😂
If I were to guess, it's FL22 Mazda cooliant. Which is green.
It was probably aerated from a fresh fill. That’s the point of the locked on funnel. It purges air from the system.
*b e a n s*
One on the best sounding cars on the planet!!!!
This is too long and finally a 6 rotor content.
654cc x 6 = 3,924cc should call it 39B
not sure if you know this or not but rob dahm has started a turbo 6 rotor build. It’ll be the best content for a 6 rotor for a while
@@chewylewy1714 Love Rob Dahm. First saw him when he took the 2 rotor Corvette to LS Fest. It was awesome seeing him gut his RX7 and start from the ground up preparing the car for AWD and a 4 rotor.
Technically Mazda pulled a sneaky with their capacity measurements so it's closer to 7,848cc given a rotar can fire once per crank rotation while a piston engine requires 2 rotations for the full 4 stroke cycle, which is why rotaries seem to make a lot of power for their quoted size.
Also, PPRE's 6 rotor is designed to essentially be two 3 rotors rotated 180° from each other, so for a piston engine comparison you'd have to look at something like a 7.8L V12 which kind of puts the insanity of this engine in such a tiny car into perspective
Due to how the Wankel rotary's combustion cycle works, the real effective displacement is double the "rated displacement". I'll refer you to a good, short technical post explaining why this is true (go here: grassrootsmotorsports.com/forum/off-topic-discussion/dispelling-the-rotary-displacement-myth/43487/page1/ ), and also give you a simple formula for the true working displacement of a Wankel rotary. In short, because the rotors spin at 1/3rd the speed of the eccentric shaft, and because of how the rotors are offset, it gives 720 degrees (2 spins) for 2 combustion cycles to create 1080 degrees (3 spins) of the complete 4-stroke cycle for the eccentric shaft/crankshaft.
The formula is: 654cc(chamber volume) * 3(amount of chambers) * (number of rotors) * (2/3) but an easy rule to remember is just double the advertising number.
@Automobile Addict it shouldn't upset anyone, rotaries are a very clever design and do have some benefits over piston engines, especially when it comes to the amount of air they can flow, the more direct conversion to rotating power and the reduced mechanical drag. But comparing power figures to piston engines has to be done with the right displacement comparisons (Craig has commented a much more accurate formula). It's very exciting to see a "1.3L" engine making over 200hp, but it's not actually THAT amazing when the effective displacement is more like 2.6L.
Knowing that rotaries actually have much greater displacements than are advertised does explain why a 4 rotor engine (supposedly 2.6L) with a big turbo can throw out well over 1000hp, because it's actually closer to 5.2L in displacement and because rotaries flow so much air they can support very largo turbos.
It also explains why fuel consumption is so poor, because a 13b definitely doesn't use gas like a 1.3! Obviously the weak point has always been the seals, but that comes down to the fact they weren't allowed to burn pre mix fuel or oil from factory for emissions legislation
i-dont-know-how-many-times-ive-watched-the-other-vids-of-this-car-but-its-legendary-i-clicced-so-fast-lol
Nice update vid. enjoyes watching thos so much, knowing I actually hanged out with u guys on that bench
Sounds almost like the older V8 F1 machines
Sound like 1975 ford cossworth DFW V8 engine.
Sounds like a winner haha rotary power
sounds kinda like a 3 rotor and 4 rotor mix i like it
That damn thing sounds like a drum line at idle lol that’s sick
That’s one hell of an in-line 6
that sounds like one pissed off snowmobile! pretty badass there guys!
Yep its a monster and a real credit to the builders
This is going to blow up that was insane now Rob Dahm is going to have some competition and what are them dyno numbers😲
Rob's 6 rotor is going to be billet and turboed lol that doesnt sound like competition to me
Rob knows nothing. These guys are the real ogs. This car was built like 8 years ago
@@petershergold9952 im the only one agreeing with you haha. Its all smoke and mirrors over here. Of course i wouldnt be able to do a 6 rotor if PPRE hadnt done it first. They set the foundation for me to try to improve upon
Rob Dahm Bet he didn’t expect that one 😂 all love ❤️ keep up the great work man!
@Alastair Dow shouldent be that long he isent building a car from scratch this time
what a beast man good to see it's stihl around
It’s a a 80/90’s formula 1 🏎 sound. Also how quick does it upshift!! Would luv to see some numbers on that N/A beast
the sound it makes is one of a kind 3 13b inline
I used to have an RX-4 that color. Loved that car.
I have a green '74 RX4 sitting in a shipping container in WA. state. Can't wait to bring it out again.
I saw this and it changed my life
*Rob Dahm* heavy breathing
Dear lord it's just angry bees all the time. Sensational.
this sounds way better than before
God damn dude, this sounds like an old F1 car from the 70s. So brutal and angry. Amazing!
The video of this engine running on the shop floor is epic ❤️
I can't wait for the 8 rotor motor.
We all can't wait to see it on the street!
Cop : 'do you know why I pulled you over?" ............Driver of that Mazda : 'because I let you'
It will be intesting to see rob dahms 6 rotor on boost.
My soul's soul left my body at 4:15... Visceral. 🎶😱🤯😵
Pro seals (Mild Steel Apex seals that bend but don't break) cost about US $400 for a two rotor. The Apex seals in this thing are over a grand.
so? Billet rings cost just as much
Now that is the sound of rage.
Sounds AWESOME!!
Sounds insane and like it's 2 different engines. 2 3rotors?or 3 2rotors
The way it's designed, it's like having 2 3 rotors, with one of them rotated 180° to the other one.
To me it sounds like a large capacity radial engine on idle and an older f1 v8, truly a unique and awesome sound
@@helplmchoking makes sense lol
There several ways you can phase them you can do 2,3 rotors you can do 3,2 rotors you set it as a 2 and 4 rotor or a full 6 rotor just depends on how deep you wanna go and how much power and torque you want
6 x 1 rotors
Rob: 7 rotors incoming 🥲🤣
Odd number rotary engine is kind weird
Like umm 3 rotor
Let the Rob Dahm comments begin!
Rotary sounds wild!
Lol I remember seeing this car in 2013 in person sounds fucking savage
it still has that typical i6 sound
it sounds like a mean kawasaki z1 with 6-6 exhaust
Interesting rob dahm gets his 6 rotor e shaft and these guys come back with some fire nice
never mind that this engine has been around for several years
this car gonna fly
I love this inline 6
just pour some kool-aid down in there and the thing will be running great !
It's almost hilarious how much this sounds like the Escudo Pikes Peak car (The v6 version)
Sounds Amazing
Looks like that would be a great daily driver
@RobDahm
This Beast runs off of pure 🌽 the broken dreams of all Fast Food workers
Is that.... 1600 HP or torque i see on the screen in the back?
It almost sounds like an angry diesel minus the knocks on idle
Good lord, what a monster!
Happy 1000 Subcriber 👍🥰🥰🥰
Is it even possible to open it all the way up when driving? That's just crazy cool !
Now make 12 !
th-cam.com/video/Qcgg7w6TFQc/w-d-xo.html
Pop a turbo on it and it's an easy 2k horsepower.🥵🥵
What is wrong with you?! Too good!
Keep on building! Much love
This is insane beast
And now a question from a guy who s no clue about rotary engines...
I saw the 6 coils in a row.
Couldnt they just put individual coils above each spark plug like nowadays?
Wouldnt that help for more power???
"No replacement for displacement"
wadda ya running?...................straight 6 mate
Show whos the master of rotors
Super duper engineering.
how many gallons per yard ?
Lol
@@willynebula6193 you know that rotarys are mutch more thristy by nature already right ? ^^
Stellarion Prime he probably just thought your funny comment was funny
All of it
@@idontgotnothin funny man thought my funny comment was funny ? thats funny ! :)
Ok I want to put a sixR in my 87’ Chevy van ... 😳😳😂🤣
Just to watch people’s faces when I drive by ...
Yeahhhhh baby gime that beast!!!!!!
I love the rotor oil cap lol
Was it stock exhaust?
Oh my wow, I want one!
6 Rotor Powered 👍👍💪💪
With that kind of overlap I wonder how low you can get the idle?
I've always wondered what kind of car Satan would drive.
Now I know.
Vamos a ver si por fin tocan la zona de los 5 segundos, 2jz power
Something flew off at end of video. Looks like a bolt. Cars so amazing
Wtf are you talking about? I replayed the video like 40 times and theres nothing flying around in that shop bay, you probably just mistook some of the dust and debris floating around
What's the displacement for it. This thing is fucking nuts. I bet it just pulls forever. I bet you can feel the pressure in your eyeballs
Well???.... What did it pull on the dyno?
0 dislikes I'm so glad I found this before the haters did.
Well 2 so far
Now goes Frap Frap Frap instead of just brap brap
So sick..subscribed! 👍
Well done
Do these things with ITBs not have air filters?
How many rotors would you need for an engine to balance out on its own and not need counter weights?
technically since theres 3 "chambers" so to speak, any multiple of 3 would be possible to balance without weights. id imagine its not worth thinking about though
Inline 6
Rotor
39B😎🙈. Sounds great
What kinda coolant is that😲 awesome car👊💪
meanwhile rob dahm is getting all the media attention
Rob dahm is a doing a turbo six rotor.
Maybe because watching two blokes put dam water in a radiator and no dyno report at the end is a bit dull. Not to take away from their skills but not very entertaining unlike robs vids . That’s why he has attention 😊
Stunning - needs twin turbos :)
It's powerful enough, a turbocharger will ruin the sound.
It makes north of 1000 HP now, dosent need anymore unless it's going in something bigger.
What was the final hp reading?
Such an engine makes 820+ hp n / a and costs $ 94,500
Just a shame rotary cars as we know them are now dead...and this comment comes from a long time lover of them, and two time owner...😭😭😭😭😭
1 gallon per quarter mile baby
There's still room for 6x HX82 in bay
Would it be possible to turbo a 6 rotor?