I'm tired of Rotary shops ripping people off! Testing the 2 Rotor 13B "SECRETS" myself.

Rotaries are not cheap toys. But nothing angers me more than when a viewer messages me that a shop wants to charge a foolish amount of money for unnecessary mods.
Huge thanks to Valvoline for partnering to build the ultimate rotary. Their involvement allows me to push components past their failure point and share the results with you. #13b #rotary #teamvalvoline
T-Shirts: www.dahmracing.com/collection...
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AWD 4 Rotor Video Series: bit.ly/2QiFduE

[@SpoiledAuto]

Gonna start seeing Rob Dahm Ads on porn sites "Secrets every man should know to be bigger and peak performance" "the company's hate this guy!"

[@ridedawn2071]

He really should make that a shirt with the 13b corvette on it

[@arcadiagreen150]

Take my like

[@corzahazard444]

Or re-uploads titled "Rob strokes his eccentric shaft"

[@corzahazard444]

@Jake The Muss Just use the porn hub logo and change it to corn hub lol

[@TurboSixxSpeed]

Watch things get sticky after Rob breaks out the vaseline, and talks about lubrication.

[@jizumnuri]

who remembers when he used to use a crescent wrench and vice grips all the time now he is building his own rotary engines.

[@misterx243]

Those were the times😂😂 cresent wrench to big? Let's use the vice grips!

[@RobDahm]

That was only yesterday 😂😂

[@misterx243]

@@RobDahm wait you are editing that out nowadays?🙈😂

[@lostcowboygarage2035]

@@RobDahm T-shirt idea for you I chipped a tip… I'm out!

[@lostcowboygarage2035]

@@RobDahm hey I have something to send you please dm me.

[@joealex65]

Daddy Dahm is about to piss off and make happy the whole Rotary community in only one video, he will put a stop to all the BS from some Rotary Shops, finally! 😁😂

[@FoxMulder_]

Yeah and about time

[@rotaryperfection]

Let's be real! Rob is calling out some of these shops while he himself hasn't built anything rotary related that's been reliable and lasted thousands and thousands of miles so how can he really talk about what they're doing? Seems his KZbin fame is getting to his head because he's been showing a lot of arrogance recently.

[@aserta]

Good. In every business that's boutique in nature, by force of numbers, rather than anything else, there's always the predators that suck in and make it worse as a thing in general. Not all of them are, but i'm leery every time i hear about "self proclaimed" experts that take months to make "perfection".

[@RedBatRacing]

@@rotaryperfection Rob knows enough to be dangerous. Making horsepower is easy. Making reliable horsepower needs experience

[@overkiller0999]

@@rotaryperfection I understand what your saying but look at what he's learnt in the short amount of time he's be building them, surrounded by some of the best builders out there. This is a mad good video and robs doing the right thing, in my opinion

[@R4MP4G3RXD]

The way you used those micrometers probably caused a heart attack for some machinist watching

[@atissmelters2475]

i was cringing the whole lenght of him measuring.

[@theOGCosta]

I came looking for this comment, I don't pretend to know everything but I know for sure all those measurements would be inaccurate and the micrometer went further out of calibration every time it was used.

[@ja60123]

Not really supposed to tap micrometers

[@user-wi6jq3qb5g]

you right can‘t sleep tonight

[@markmezo]

And i thought it was only me that noticed his lack of use of the ratchet stop. LoL

[@Antmattroman]

“they do a lot of weird shit to metal to make it stronger and better” lol

[@RobDahm]

Gauging my audience. I don’t ever talk down but I want to assume many of the viewers are new to rotaries. And I think in simple terms 😂

[@fxzn]

@@RobDahm more like new to metal

[@Antmattroman]

Rob Dahm honestly a good way of doing it. i just though the way you said it was funny as shit 😂

[@russellsouthard7855]

@@fxzn Nah dude I love metal. Acacia Strain, The Faceless, Cannibal Corpse, new Taylor Swift. All great. Only the last one needs to be heat treated though.

[@egordobryak3057]

@@Antmattroman ikr haha love that from him

[@Af_4600]

Quick tip when using a micrometer, Rob. Use the little knob at the very end that slips when measuring, that is meant to give as soon as it contacts the part and give the most precise measurements, as well as prevents you from damaging the tool.

[@rotaryperfection]

Funny Rob is calling out other Rotary shops and he doesn't know how to use a micrometer.

[@Fierofreak01]

The "ratchet"

[@MrTheHillfolk]

That's for amateurs, once you get the feel for it youll get better results. Keep practicing. Same with bumping spark plugs to gap them, only trained professionals can get away with it. Same with clicker torque wrenches , once you get good at using one switch over to a beam style.

[@MrTheHillfolk]

@Jake Heke I didn't wanna give away all my skills and be a braggard 😂

[@williamstock3007]

in a machine shop i worked at they used them exactly like he did and I got something wrong by using them properly

[@thejman3489]

Rob a year ago: I don't know what I'm doing. Rob now: I still don't know what I'm doing but I'm going to teach you what to do.

[@jhowe67]

As a master tech once told me, "Never trust a man who tells you he knows what he's doing. They almost always don't."

[@thejman3489]

@Mr and Mr Smith You can click my name or if you are on mobile you can click my profile picture. Not sure why you would want to watch my videos though, it's just a bunch of random stuff and the videos aren't good.

[@Winneri9]

Rob thats not how you use a micrometer, might wanna look that up

[@jamiereid2501]

Was just thinking that 😂. Still not hating on him though

[@Japs_Eye_Of_The_Tiger]

i use a pipe wrench on my micrometer

[@Mitch3343]

Just jiggle it for accuracy. Like a pair of old calipers.

[@R4MP4G3RXD]

made me die inside ngl

[@RobDahm]

I’ll definitely improve on that. Haha. Didn’t know. But you know for the sake of this video it illustrated the purpose. I wasn’t machining anything either way. I wanted people to see the ballpark figures. Didn’t realize how ballpark I was 😂 but for real thanks for pointing it out

[@MikefromQueens]

That’s what happens when no one knows the craft. Easily conned. Sad. But education is key. Thanks Rob!

[@helplmchoking]

Exactly! Know your cars and engines people! Or, in the words of some Aussie dude, "use ya brain"

[@RobDahm]

Thats the most important takeaway. An educated customer will also make a good shops life easier. There are shitty customers out there too but this video focuses on whats realistically possible with as little as possible and how reliable it is. So customers can make educated decisions

[@heruhadianmudjenan4377]

Yups... Its a time a shops more be honest to their customers... In my country most off shops offer a used engine to swap... I think thats far for realiby to get a bigger Hp with turbo.. 😅 Thats why many people in my country only spent alot time put their cars in the shop... What i learn... I agree with robs... Even stock part or engine stock have limit and not build for huge power to upgrade cause their cars made in mass product and ti gain big profit i think

[@cathalsurfs]

@@RobDahm Says a guy who cant use a micrometer.

[@crossstarling2452]

I really love the in depth build/technicle teaching videos instead of guys just buying fast cars skipping to them being built and doing burnouts this is why i watch car videos!

[@scooter9330]

just imagine if Rob Dahm and Rad Potential did a video together. The world might just end from the amount of rotary engine knowledge present in one place.

[@boredlessgaming8548]

Yeah not many people know about Rad but him and Rob are my favorite.

[@Limbaous]

When you open the boxes at 4:37 I hear a turbo 😂

[@cr0wnnoize808]

Yeah! 😅 Bypass valve.

[@jdizzle8669]

yep lol

[@bustedrav]

New rotors and out comes the Vaseline, I see you Rob....

[@RobDahm]

Bow chicka wow wow

[@sedon7098]

Please the friction clutch on the micrometer has a reason XD coming from abom79 that quite the drastical difference

[@notwutuc]

yay im not the only one cringing at the micrometer skills lol

[@Swagoi]

oh god rob please

[@USAF291]

When he tightened the micrometer on the rotor and left it hanging there lol

[@ralphyrafa]

i also was sorta pissed off how he didn't use it, that micrometer is probably useless now ajhaja

[@Cijpher441]

that and him holding the micrometer on the ends gave me anxiety

[@hein_mcleod]

The little nub on the end of the handle is what you're supposed to use when tightening the micrometer!!!

[@carlryan808]

Yup 🤦‍♂️

[@mandrakejake]

Youre right, but I never liked it. I can get more consistency by feel, check against a gauge block. The little ratchet mech on the end isn't very good imo

[@liiiinder]

@@mandrakejake Depends if you always used it the right way it should be accurate. But as soon as you start tighten it with the big knob you ruining the calibration 😅

[@warwickben]

I don’t like the ratchet style. I perfer friction style .

[@naterg8ter680]

It's called the thimble. Easy to not know how to use a micrometer. But I'm sure in a video or two we will see him using one correctly.

[@friertuck4591]

16:10 You posted this video at the best time possible, in the next day or 2 I will be packing my rotors as well. Thank you Rob for explaining this ! I've understood that the oil rings and springs are oriented in a very specific way but I've always wondered why it was done in such a specific way. And I was also so curious about the actual physics behind the design. Of all the videos I've seen explaining how to build/pack a rotor, this was the most clear, and straightforward ESPECIALLY since you went into the reasoning behind it. I cannot thank you enough for making this video !

[@brucecarey915]

I really appreciate what you're doing here. Sharing what we've learned is one of the most important things we can do.

[@robertmckeeverii6038]

I love these tests. Banks is doing the same thing on a Dirtymax.

[@jeeperzcreeperzz]

Kinda... Its a lil bit different in this case

[@johnaustin6673]

But Gale is a very experienced engineer, Rob is on his way. (takes a lifetime)

[@rubenbraekman4515]

Love my mans banks series on killing a duramax!

[@ben_yeates]

Rob did you hear the blow off valve sound when you opened the box to those new rotors?

[@kennyhoover2970]

Rob do you like comments

[@BaseSRKI]

Haha:P you got some love back😎

[@windsorx]

One of my favorite things about you videos is no bs intro and outros. Also no crappy music during a fast forward montage. Please no music

[@nuclearwar1000]

28:03

[@PatrickVerrett]

Lmao it’s a triangle in a circle in a square 😂

[@germantrueLP]

TowwerN3 actually the specific term for those kind of triangle would be spinny Dorito, but thanks for your effort!

[@kitchris5902]

25:27 god the sandpaper on the little spring seal is making my skin crawl and jaw clench up 😂

[@SmallKittyPaw]

Every time I see Rob using chest cam. I get weird feeling like I'm watching t-rex gesticulating with it's tiny hands lol

[@markg1495]

💀

[@flakey7832]

It's the reason I like his videos

[@codyedwards4535]

Rob, I've followed you for a long time and today I am subscribing to your channel. This is the type of video I love seeing from rotary enthusiasts. Thanks for everthing you do and share!

[@OK-Z4]

someone has to teach Rob ... how 2 use a micrometer ... i cant look @ this... @Rob ... greetings from Germany... love ur Chanel

[@boostedeuros2116]

Shhhhh when the rotarys become reliable the fabric of space and time will tear.

[@RobDahm]

That’s not fair. You’re from the land of precision engineering haha. I’ll use them properly next time

[@OK-Z4]

@@RobDahmthanks for ur reply... I will have a look for ur next try and then Judge on your try ;) ...ha ha... and again ... greetings " from the land of precision engineering"

[@nathanleverenz2063]

I have been waiting for an in depth video such as this, thank you for all of your work and time you put into the rotary or even car community! So inspiring

[@Drum44er]

Now this is the kind of content I like to see! Hope there are more videos following up this whole process from start to finish

[@davyjones418]

OEM vs Aftermarket Apex seals. A rotary builder told me that they recommend OEM for most applications since they are softer and you tend to loose power gradually; also they are less catastrophic. Aftermarket ones are harder and prone to giving away suddenly, causing more damage. They recommended them on motors that will be rebuilt frequently enough that that's not an issue. What is your experience / opinion? Thanks for the great content, BTW.

[@thomashayhurst6547]

Alternative title: How to rotary engine for dummies

[@itsFiggers]

The contents of a video with that title would be a much shorter video: Just buy an LS

[@thomashayhurst6547]

@@itsFiggers LS swaps are overdone now. Its nice to see people doing something different with their cars

[@itsFiggers]

@@thomashayhurst6547 I actually do dog rotaries, and if you're getting into a project for something to break down completely and learn there's nothing wrong with rotaries. My thing is the cost to performance ratio, it can't be argued that rotaries are more cost/performance efficient in the long run vs a junkyard LS

[@thomashayhurst6547]

@@itsFiggers fair enough. I respect your opinion on that

[@brapgarage]

GREAT video. Looking forward to seeing the rest in this series. Keep it up, Rob.

[@vrudy6]

Love the level of detail you are sharing with us while doing your assembly.

[@dilanorrino3224]

Rob can you start a shopping list of things you buy for a build?

[@germantrueLP]

Number 1 on the list: 5kgs of Vaseline

[@aserta]

In his series, now going on 10+ years of rebuilding his Cosmo, AaronCake had one of his lady friends rebuild a rotary under his supervision, it's that easy.

[@willjunkin732]

Getting ready to build a 12a in a first gen. I have been looking forward to this series. Nice to hear stuff over again to keep my mind fresh. 👍👍

[@Relisys190]

This is excellent content. Great explanation for anyone building and putting their engines back together. Nice work !

[@HelpJawsKilledMe]

How many LS engines do you have to kill before you become a Daddy Dahm apprentice? asking for a friend....

[@thomashayhurst6547]

I think the minimum is at least 4

[@CraigFenske]

I will buy 12 ls engines and put 2 92mm turbos on them Ebay said they would make +800 a turbo

[@ibetatestedyourmother]

"C" don't let that number fool you.

[@miguelsanchez6465]

Amazing video!! Thanks for sharing all of this with us Rob!!! It still blows my mind that most rotary shops are the way they are!! Your the best!!

[@lamavib9514]

I just love those subtle endings with no bs afterwards 👍😁 keep it up

[@savionbossdallas1875]

As someone who has a pretty good understanding of taking apart and putting together V and Inline motors, god damn rotory motors are complicated

[@bobsagit10]

It’s crazy how an engine that is so much more “simple” than a push rod piston engine are so much more complicated. Rotaries are nuts

[@savionbossdallas1875]

@@bobsagit10 they seem really simple till you really dive into it and realize that every rotor has like a 10 step assembly and that's just the rotors themselves 🤣💀

[@PolarArctica]

The concept is simple, but the details are what get you lmao. Such simple engines that require such tedious work to get them built properly.

[@halofreak1990]

@@PolarArctica When you've built them properly, though...

[@GregRampersad]

Dammit Rob, now I want to find an FD and build a rotary...

[@1skinnypuppy]

Watched it again, I love you guys man. I was going hard on rotories back in the day, I’m glad you kept the righ alive, and the experience you share certainly keeps it real and alive. Thank you very much!!!

[@carlosbutler7811]

Thanks man for showing your skills on your rotory build with good details now I'm ready to build my second gen gxl.

[@johnmeurer4780]

"If you don't have feeler gauges". If someone was this deep into a rotor I'd hope they have feeler gauges. They are not expensive, just get the right tool

[@cencoast_7.340]

Calm down

[@johnmeurer4780]

@@cencoast_7.340 I dont like hack mechanics

[@cencoast_7.340]

John Meurer I’m the only one that has responded and even I don’t care.

[@johnmeurer4780]

@@cencoast_7.340 that's not saying much

[@cencoast_7.340]

John Meurer It speaks volumes.

[@tassoss13]

Here is a apex seal in meth! 🤣 I am dead

[@godiegogo91]

I was going to j35 swap the miata. Thank you rob! Now I'm doing a rotary thanks to you!

[@misterracer6201]

Rob just earned "Real CAR GUY" status in my book, 1) logical \ methodical build reasoning 2) sharing knowledge gained in #1 3) AWD Billet 4 Rotor RX-7 used as table for camera's to record budget two rotor build for us.. @22:53 😀 It's only a car at the end of the day, the challenge was the build and what's next!

[@keegan4209]

Hes gonna blow it up

[@brandona4618]

Without a doubt.

[@TryHarderPlease]

@@brandona4618 We will still love and support him anyways lol

[@jimchews1106]

That's the point

[@RedBatRacing]

1 don't use vaseline on oil rings. 2 learn how to use a micrometer. 3 balance the rotating assembly when changing rotors and especially putting an auto counterweight on. 4 check the height of all the springs after heavy detonation, they can flatten. 5 the FC turbo housings don't have extra cooling around the leading plug, FD housings are better. I'm sure there is more....

[@Morris279]

Love these videos Rob! Keep em coming, makes me miss my ‘73 Rx-2 with a street ported 13B 😢

[@jareddegler1780]

Been here for a min and love every video. Glad you got that 4roto up and running. You are amazing man. Can’t wait for that 6roto!

[@preludedude94]

The machinist cringe.... Watching Rob twist on that micrometer like its a pepsi bottle cap....

[@SupermotoPT]

What appened to Abel? Did Rob and Abel had a falling out? I gess Abel is not happy with this video..

[@rubenbraekman4515]

Too much BS

[@nicklasclausen1247]

he scammed rob

[@SimoWill75]

Isaiah used to work for Abel, now he's with Rob. I figured Abel got shitty about that.

[@mattdyer489]

From what I have read. Able has a long history of fucking people over. He screwed rob over more than once.

[@Bear-T]

Totally love the way you make this vid, neat and clean with no bullshit!

[@benpearson1825]

THANKS!! I'm going to apply as much of this as I can to my FD

[@dave9242]

And the award for understatement of the year goes to Rob for saying "This isn't easy to do" 😂✌️

[@sportykev]

This is so damn inspiring. My FD has sat in the garage for years. The engine in it's last known state was good, but it already had 120k original miles. One day, I'll fire it back up again and hope the motor remains in one piece.

[@clickslidebang1871]

Lol thats me with my fc bro lol. Used it in college for a year.said F u to the mph and bought another car and like you said when it sat it was working great.who knows now.9 years later

[@Nitrus5]

Well hey if you ever decide to rehome the FD hit me up lmao

[@dejesusmouse9841]

I swear you motivate me to start my own project I just picked up 84 RX7 with a 13B 2 rotor

[@dedpix3l]

This is super interesting, please continue with this!

[@Xantosh82]

love your work man! rotaries while on the outside look simple (no cams, no valves no pistons), this shows the complexity that is on the inside! (making sure the rotar seals are inspec, compared to just buying a set of rings to fit a specific piston for piston engines!)

[@roop_fd13b22]

Very useful information. Thank you Rob!

[@ZombieObsidian]

Stock 3mm apex seals are fine. We had our Sports sedan making 750 for 2 years without touching the motor. We ran a plate on the bottom of the motor. Removed all twisting. Rules didn't allow us to do any block mods.

[@glengrandy2378]

Rob you make it look easy with all of your knowledge. When I first seen the rotary apart it look soo complicated but now with just this video makes it looks a lot less complicated now 👍🏻👍🏻👍🏻👍🏻👍🏻

[@RicanLebron]

Thank you rob, for taking the time to make this for us viewers.

[@holythump2027]

Man THANK YOU THANK YOU THANK YOU THANK YOU, i love having this info i have been watching you grow since you first started a few years ago its been amazing watching the transition and now just all the info you cannot buy that you handing out THANK YOU!

[@msmary11]

So stoked to see more of this

[@somedudesdad3905]

Great intro, looking forward to the series

[@PlayinWithMahWii]

Hey Rob, love what you do, keep it up!

[@marqueeviveiros8412]

for a person like me that has a short fuse and zero patience for assembling anything with too many tiny part , I could never picture myself ever working on engines like those , well I congratulate you for hard work and persistence and thank your for sharing / teaching us the inner workings of rotaries engines

[@Jay-wu1xe]

Dedication to perfection while always learning himself which he always admits. Nothing wrong with that and much respect. More than most can say...

[@JDMshitbox]

Hey Rob, good stuff man! Keep it coming

[@bmxriderforlife1234]

Dude the quick oil change on fresh engines is a thing not everyone does but it's so worth it. For the first little bit after rebuilding the engine in my last project car I did a couple oil changes stupid frequently.

[@mikejohnson5900]

Your explanations are great Rob, don't change anything!

[@carculturesweden2668]

Great vid Rob! Nice with 4K video aswell!

[@isaaco8056]

Excellent info thanks!

[@changtastic]

I’m a fan of the camera man, he just randomly curses, where you rarely do! He’s a good side kick for ya!!

[@daverushton5966]

You explained everything Brilliantly .You really are a very Good Engineer .Bck in the day I had a Rx3 estate .A Beautiful smooth motor until I had to park on inclines to start it .So I took the rotary out and put in a 1600 ford crossflow easy conversion .I took the rotary apart it was fun I ended up with a pile of junk .The carburettor was massive. thanks again for a Good vid .

[@mattcossel29]

I'm really looking to more of these Rob!

[@davidalvarez5929]

So much awesome info thanks so much.

[@jtcox1354]

Keep on keeping on man

[@RedDawnGamin]

I am not really don't know my car's or engines but i got to say it's interesting watching your vids, I learn something new every time i watch your vids.

[@andrewfurst9901]

Rob might not be a machinist, he might not be an engineer, but he is doing things no ones ever seen before.

[@james.d.8044]

you are a Rotary Genius ......Thanks for the great work and stories

[@dubbleA100]

Those are S4 turbo housings! I'm actually glad you're using these, because people can finally shut up for which housings you need to use! 🙏🏿 I haven't watched the full video, but I hope you let us know what apex seals you use. I use RA

[@muchcat1113]

Me and my wife are considering 13B swapping my 1982 Rampage so this is perfect

[@amberselectronics]

I love this kind of attitude in cars, computers, or anything I work on. Sharing actual info helps us make it all better and doesn’t hurt anyone’s bank unless they’re full of shit anyway. I’ve had issues like this for years with tuners. “You can’t possibly learn to tune by yourself”. Why not? They learned it, why can’t I?

[@floridarx7]

I've watched you from the beginning and all i can say is that I'm proud of you. It's beautiful inside and out. And im so glad you went back to montego blue, only thing better is if it had a tan interior

[@user-wn9zx6vz3k]

I am building a rotary cart and this is really helpful

[@MrKaiKai]

there is a 92 rx7 r-1 with bad compression on one rotor near me, now you are motivating me.

[@Rozza43]

You make me miss my 88 turbo II so bad...i love what you do with the Wankle.

[@Ginouxfrank]

Great video, priceless information. Video is super clear and shot at angles that show the work clearly. What camera are you using?

[@tonytorres4239]

Awesome, one thing, maybe you already do it, is that on the rotor berings you get blue magic a rag and polish them, then a little Valvoline so they centric shaft slides easier without scratching them. Edwin loquito quiller told me that!

[@sstace69]

I'm really, really excited about this! I've been mulling over a Miata project a 2 rotor must a might be cooler than an LS swap consider how many are doing them.

[@jrgenrafaelsen1413]

Rob please use the torque screw on the micrometer. U will uncalibrate it and youre measuarments wont be consistent. Love youre builds!!

[@bruceboulan1138]

Started spreading the knowledge 20 years ago. TeamFC3S days. Funny how people want to hold it so close to them E85 is key

[@blackaccordlx]

I like where this is going!

[@anteupbeats]

Worlds first custom rotors and housing and E shaft that are twice the size or standard 13Bs. Now that would be sick 🔥🔥🔥

[@joshr8680]

Awesome video my dude

[@TheOmegaFleet]

Try to only use the smallest knob on that micrometer (outside most) and handle the frame as little as possible as heating from your hands can make it larger. If you have a 1-2-3 block handy or some shims, calibrate the micrometer on one of those.