"This motor is perfectly fine except for the parts that are absolutely destroyed" - Rob Dahm 2023

Now I'm kinda curious if he can make a 500hp single rotor lol.

rob actually managed to get me conditioned that when that engine blew my first reaction was excitement like "oh he's going to rebuild the shit out of this!"

I just found out today My daughter who is 13 has been watching Rob for a little more than a month. She's in advanced Math, Science, Steam. She said it's how rob explains everything and his excitement for engineering that keeps her watching because that's what she wants to do. So thank you rob very much.

_"An engine runs at its best the moment before it disintegrates."_ - Keith Duckworth; COSWORTH

i swear the 4 rotor hype train NEVER stops and im here for it

I love Rob in there hitting buttons like Anikin pod racing trying to get his engine back up.

Mechanical engineering student, been working on cars my entire life, currently living with my aunt and uncle who are retired automotive engineers while I'm at school. That is one of the best simplified explanations of bearings and oil I've ever heard. Not something many people talk about, and something a lot of people get wrong. High mileage engines, if maintained correctly, should use the same oil they used when new because the bearings will be the same size and shape they were when new. The temperatures, pressures, and clearances are the same.

Any day with a 4 rotor video upload is a good day, we haven't seen this ol' girl for quite a while. The next chapter of the 4 rotor saga will be wild!

I’ve been waiting for more 4 rotor content for so long you made my day

Watching Rob work on rotaries gives me the confidence to work on a rotary I don't have.

There's nothing more exciting to hear than "We are building our own engines" after seeing everything you guys go through to get that perfect tune and that perfect run out on the track. 👍

This is the title I’ve been waiting for

At least it blew up trying to do something it wasn't meant to do, rather than blowing up when in it's normal duty! Signs of a solid build tbh given how much you've done with that set up already.

Rob’s done more in the last five years than I have in the last twenty… fml, and most of chats. This is an epic journey. Be grateful to have witnessed it.

Rob has mastered the hard out of his videos, now he's practicing hard ins. I feel like I started this in the middle of the video LOL

Imagine how fast it would go without the drag of a missing rear screen.

Yes more 4 rotor content, I can't get enough of this. I love the half mile runs this car does, I think it is the perfect vehicle for it. Thanks Rob and team.

I love how he explained oil and pressure waves.I can listen to him explain pretty much anything. He simplifies and makes stuff simple to understand. More great RD content!

Hearing this guy talk about breaking down a motor, or explaining oil....... its a magical experience. Like ASMR for a car guy

I remember when this was a Chassis being caged at a shop and it was just Rob still working on suspension geometry to this so many years later! Pretty wild ride and now your gonna be machining engines basically dudes living the gear head dream XD

Surprise 4 Rotor Video?? Made my week already 🫶🏻

I love how Rob has set and forgotten all his patreon tier descriptions, and that they're all almost 5 years out of date. Crazy. Mad respect. Doing Gods work.

"This motor is perfectly fine, apart from the parts we destroyed " The optimism of this man has me smiling ear to ear 🤣

Rob - I am a diesel guy and have just a street 1200HP (capable of 2000)... Duramax - Industrial injection block yada yada - and I have a massive steel girdle for bracing the entire aluminum block - i have lost thrust bearings and other thinga... but never had major block damage and its totally due to the girdle preventing warping. I think you are spot on to put a steel girdle brace of some kind to keep the 4 rotor from warping - perfect plan - Way to go man... take it to the moon... you got this...

Ya know what bro? I love watching your channel... Out of all the automotive channels that I watch, And I tell u what it's alot of them!!! Your channel is the one that I love the most... Why you ask?? It's cause you have a little of ABSOLUTE EVERYTHING!!! You BUILD cars, You RACE cars, You make me LAUGH my ass off a bunch, and the MAIN reason that I love your channel bro!!!! Is HONESTLY BUD, You and Isaiah, always "LEARN" me something!!! And to tell you the truth, I will be honest with ya, 9/10 times I watch car content to be entertained... But just the fact that yall entertain the livin shit out of me, and always teach me something NEW, & EXCITING, that I had NO clue about previously... Is to tell ya the truth, is just down right freaking AWESOME bro!!! I tell ya what brotha, if there are any school teachers out there watching, an reading?? They should take some of what your doing, and apply it to there lessons!!! I know every kid learns differently... But... Me PERSONALLY, I would have been excited to go to school everyday, if my teachers entertained me, as well as made me think.. I mean I know its not realy there job, But I always pay close attention to your videos... Its all the extra shit that makes me wanna learn, lik the little funny banter between Isaiah an yourself that's funny as hell one minute, and then the next minute, Your teaching me how to do my own Mill-Spec-Race-Wiring harnesses, ect. Just a quick example... Anywayz, I absolutely love your channel bro... Keep up the good work you two!! You keep on a making them, and I will keep on a watching the shit out of them!!! Thank you for doing what yall do!!! I really appreciate it, alot more than you even know yall!!! 🙃😜🙃 😁🤪😁

3:17 finally a proper full pull no short shift, it sounds like a beast

I've never seen someone excited to blow a motor, except for Rob. "it's beautiful, this is exciting" then you went Rob Nye AF which was amazing, along with the BOMB at the end. Insane video, truly amazing. You deserve your own TV show. Too good.

1:45 Seeing a rotary so violently do a burnout to the point where the entire suspension is flexing is impressive and just shows the insane amount of HP and Torque it is making.

Man that rotor dent tho

I'm not a rotary guy (yet) but can't overstate how much I appreciate you getting granular into the science, mistakes, lessons and response. You might be my favorite car guy on KZfaq.

Man I've been following this channel for a number of years now and was aware of it for quite a while before that point. The further I get into my engineering degree the more i appreciate channels like this. I'm very excited to see where this will end up going.

That's the right mindset bro, Never Give up

Im glad you finally posted this video, it's crazy how far you have come with pushing the rotary space and sharing all your knowledge about it openly! I can't wait for my Dahm 4 rotor engine!

The Tony Stark of rotary engines. Love watching Rob do his thing pushing those motors. His passion for cars is contagious

I can't help but think that you're a certified car legend in the making man. All this knowledge and trial and error in order to make the best rotary powered car. When this man starts chilling, in his 60s or whatever. The stuff he'd have achieved will put him in the same leagues as Mr.Nagata and Nakai san and all of them

Let's Go Rob, I LOVE it when you upload, you are so smart I learn something every time I watch your videos. I cant wait to see the engine you build!

The process of the 4 rotor has been EPIC to have been a Subscriber during all the early development... Now to see your Really REALLY stepping it up to an in house CNC manufactured parts .. Rob my hat is off to you and your team... Isaiah is THE man!

I love that this channel has made enough money to allow Rob to keep a smile even when he hurts the 4 rotor with a tuning error... That says a lot. Great outlook!!!!!

The bearing explanation was great, can't wait to see the new billet motor build!

Rob is an absolute legend. The ending was amazing. I look forward to the details on rebuilding the engine!

“Can I help you?” 0:44 Rob: 😏 😂☠️

I've been following Rob since I was in high school. 17 years now, and I'm still amazed by the intelligence you posess. I love the attitude....break it, find it, fix it, send it. atleast IMO ... Thank you :)

I've been smiling through the disassembly, just admiring all the parts coming off and recognising the progress that they embody. And I was excited to see more. AND I love the fact that the 4 rotor is being flogged hard and isn't some kind of show pony trailer queen. Lets GO! ROTARY POWER!

Amazing you saved the engine as a whole after that, just shows how well built it is.

an incredible journey with rotary engines. Congratulations to the entire team for your magnificent content. Greetings from Portugal.🤟

Everytime I put on a Rob Dahm video, I might as well make some popcorn becuase its always a journey of a movie. Its crazy how much he can cram into 30 mins an still make it flow perfectly. As Always Rob, Fantastic Video!

Its crazy to see how much you have been able to push the rotary engine all these years, I remember watching you years back in the old garage when you was still first building the 3 rotor with the old yellow lambo sitting next to it. Iv always loved the rotary so its nice to see someone show what the limits really are and how you fix it and make it stronger.

I watch every 4-rotor video just to listen to it scream. FOCK it sounds so damn good

Bummed for the mishap, but excited for the future! Love the science lesson at the end. Keep the videos coming Rob & Crew

Rob shows how underrated the Rotary engines are.Dr. Felix Wankel would be proud of you Robb

Thank you for all the content of trials and tribulations to get to where you have. It truly is an inspiration for me to try and keep pushing. Depression is a hell of a thing, and it's hard to be motivated. Seeing your passion and fortitude in tough situations, going through the process to make sure everything is still good and overcoming issues, it makes my little project feel so much more doable since there was a day where you were just like me, a normal dude with a dream turning wrenches in his spare time. You're my favorite part of grid life the last 2 years, though I left you alone this year since I didn't want to interrupt you getting the 3 rotor ready for your time attack. From someone who's been watching for about 10 years now, thank you for keeping with it.

I cannot wait to see the machining of the new engine parts

You need to shorten that shifter, you are reaching way up and over. Takes so much time to do just that, not to mention it just looks uncomfortable.

Just watched your video on the Haltech channel and it was nice to see a summary of things you've learned without all the fluff. Really shows how far things have come and how much technology is packed into that car. Nerd stats are always awesome

All of this just gets me excited for the new phase of this project! After all of these years we all know Rob is going to push this beast even harder and make it work.

Yeah even the steve morris smx can only handle 70 psi max...so you hitting 60 is alot. Im really impressed! I know it sucks it broke but what a way to go out. Learning and pushing this platform to the absolute max. Wonderful content! ❤

Rob felt like the Bill Nye of rotary science in that last bit

I can't wait to watch this engine building series. That is definitely the most intense thing I've seen a car youtuber attempt.

i don't know a ton about rotaries except for they sounded amazing when i was drag racing in my 20s... I love how technical Rob is about angles, weights, symmetry, balance and everything for a rotary... Some other youtubers take apart their motors after blowing but the precision he has is, in my opinion, unparalleled in this social media car-universe.

Im amazed that its holding up to that much power as it stands. I think the extra bracing across the housings and irons that you mentioned will significantly reduce the wobbling caused but such extreme power. Excited to see how it comes along. Im sure your pockets are hurting, but im glad to see you are seeing this dream through. Best of luck team.

ive never been a huge fan of rotary engines, dont get me wrong theyre cool, but im really sad to see yours blow. but luckily with the amazing work you guys put into it, it blew in a great way. really hope to see you get over the 200mph mark.

The ability to shear that key, is insane! Just think the stress on key that also had to make it past the taper fit. This is awesome stuff!

Thank you so much for keeping it technical but still entertaining and not dumbing it down/bro-ing it up. Tribology is such a fascinating field of study and so important to our modern world.

I knew my boy would come through on his promise! Cant wait to see the c8 when you finally 4 rotor that thing.

As a auto tech (BMW-Mercedes) I find this episode satisfying. Love the engineering you guys put into that motor. Curious on RPM max on those runs?

Even though the carr hasn't hit 200mph, we know damn good and well that it will have no problem reaching and surpassing that speed. You'll get there, and we are here for that moral support.

That 4 Rotor Motor Gave it's all and then some. Kudos Rob

Rob geeking out on oil makes me so excited, I wish I knew more / had more experience to appreciate this fully!

I need to get a PHD in the study of rubbing 😌

HEY ROB ! WE MET ON A FLIGHT TO ATLANTA LAST YEAR, I NOTICED YOU AS YOU WALKED BY ME UP FRONT IN THE PLANE ! I AM A BIG FAN AND I AM ALWAYS AMAZED AT WHAT YOU HAVE BEEN ABLE TO ACCOMPLISH ! I AM PROUD OF YOU, KEEP BEING AWESOME !

Rob you're really appreciated as a content creator and car guy. Thank you so much for putting safety first and just walking us through all the stuff as if we were right there. Loved your back music, your cut tos, the angles you used and just the way you put out content. Great work!

its always a good day when daddy dahm uploads some 4 rotor content. he has blessed us all

When will we hear something about the twelve rotor ?

2strokestuffing makes his own engines! very interesting and awesome video keep up the amazing work!

Someone smart once said “left to their own devices, a turbo will either blow itself up, or blow your engine up.” I’m so glad this engine survived except for the “parts that are absolutely destroyed” even with 60PSI of boost. I can’t wait to see the future of this build, which is CRAZY to say considering everything you’ve ALREADY done. 🤯🤯🤯

S tier content. Dahm's team is going to be the stuff of legend.

Rob I notice you don't wear a hans🤔. Also change out that cheap racequip helmet please😊 that thing must weigh 5 lbs🤔maybe 6 with the gopro, have to protect your neck in this fast car. A Bell, stilo,sparco or simpson carbon weigh around 2.5 to 4 with the hans posts, the weight makes big difference on your neck 🤗. You got the lightest wire in your engine harness put the lightest helmet on your head😊 Thanks for the great vids

Rob, your channel is amazing to those of us who are rotary fans. The fact you and others are still taking this engine platform to new levels allows the rest of us to dream of what we could do to our rotary platforms!!!!

I love it when you look at toasting an engine like it's a good thing. Then immediately deep dive into the forensics of the situation. Because: science. What a wonderful attitude.

Thats a whole lotta hp.. now if you could get the torque to match then that thing would be beastly!!

I loved the tear down of the engine after, just sorry that the engine had to blow. Nice video, looking forward to seeing how you fix and improve the engine.

I don't always watch Rob Dahm, but when I do... I learn a sh!t more about cars and motors than I otherwise knew.

I love that he just keeps going man. No matter what.

Have almost zero knowledge of rotary engines (I know the concept), not involved in RX-7's in anyway, and barely getting back into the racing community, and this is one of the most interesting and educational videos I have ever come across.

Rob turned his 4 rotor into a massive oil scavenging pump lol

6:46 That's some quality Rob Dad impersonation there 😂

Been here since the beginning of the build. Loving every upload. The passion he has, every car guys can relate

Loved the section about lubricant and bearings. Informative and super clear.

Pushing the car hard! I think you next iteration of improvements are going to have awesome results. Love seeing/hearing the car scream down the half mile.

When Originality sparks Curiosity you get an impeccable creator. TKO not for Dahm performance that's data. To be such a well rounded individual your patience brings new possibilities. An technically "Street Legal". Love all Dahm Journey's! Stay Gold! The Ending was the best Cliff Hanger did not want it to end. Thanks for everything you and your team bring

The hype is unimaginably real, and I'm here for it

There’s probably a dude in Thailand that’s pushing 60spi on a 4 rotor mounted ina river boat doing 180mph while smoking a cigarette in 6in of water completely barefoot at WOT for 7 minutes straight. 😂 nice build!

Awesome video Rob, I saw the onboard footage from the other car awhile back and was waiting to see what happened to the motor. Thanks for the extra explanations that always make your videos so interesting. It's a pity it let go when you were well on the way to the 200+mph, but I am sure you will build it back better. The 4-rotor is an absolute weapon!

Rob Dahm is undoubtedly the king of blue balling

"This motor is perfectly fine, other than the parts we absolutely destroyed." - Rob Dahm 2023

I am a simple man. I see Rob Dahm post a video, and I like it

Lol @10:09 minutes in. Beep boop beep beep boop. Oh no!!.. Perfect. 😂 Good on ya folks. Hehehe. We always believe and see you Rob & Team:! Everyone involved in this endeavor is brilliant.

having watched this channel for a long time I find it funnny how they laugh and giggle finding the broken parts on this motor, when a few years ago it would have been crying.

"We are building our own engines." *END VIDEO* God d*mmit, Rob! 😂