Building the ultimate reliable 2 Rotor monster for SEMA

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AWD 4 Rotor Video Series: bit.ly/2QiFduE

[@supraman.91]

I know it's the annual SEMA push but I'm am LOVING the fact that you have given us 4 videos in 7 days !!!! thank you for taking us along on the journey

[@alecalbain1065]

Agreed!!!

[@SteveLurvey]

Didnt he pledge to do a video a day for a month and it lasted 3 days.

[@peni80085]

@@SteveLurvey boo freakin hoo

[@LawzyDog]

@@SteveLurvey he could do what cleetus does and turn this 40 min video its 4 videos so don't cry....

[@rx7dude2006]

Love the welding next to the acetone,lol.

[@AverageJoeBuilds]

I have quickly become addicted to this channel and that's with my own channel being the Polar opposite 🤣🤣🤣 as budget of possible LS swaps yet I'm addicted to your constant space science level of building

[@feenyx6394]

It's good to have Fabdaddy back, you're such a power couple! :D

[@jaymie_denardo6556]

No one will understand that cone he cut. That is absolutely beautiful. You are a fucking genius rob.

[@alexelrod242]

13:34 isiah's inner monolaug - "I don't know what to do with my hands" 🤣

[@juandeclerck7934]

Please do a collab with Widdet/Vargas/Mazzei...with those 4 Rotary's on 1 track,alot of our lives should be complete

[@Matty.Hill_87]

Mazzei doesn't own his 4 rotor anymore, he sold the car a few months back and he's building a 5 rotor now

[@Matty.Hill_87]

Would definitely be a crazy video though, all the 4 rotor cars in America on track at the same time

[@PaceWorks]

The Music reminds me of the old Wrc 2 game 🎮👌💯🤣

[@l8tapex]

Pro IMSA Mazda driver Rick Weldon did that wrist joke to me in the paddock in 1992......

[@BenDeSwert666]

So Rob, since you're going all "balls to the wall" with machinery.. A CNC lathe would be useful 😁

[@Onewheelordeal]

You can do a lot of it's jobs with a mill, I mean he cut inside threads with it in this vid

[@dylanzrim3635]

@@Onewheelordeal but you can’t cut a crank/eccentric shaft or camshafts...

[@SRT302]

Was that an FC!?!? 🤩(6:14)

[@separator94]

What's up with the RX-8??

[@simonthomas6997]

Yay, I've missed Isaiah's shenanigans on cam, & he has so much knowledge. love the in depth videos!

[@B16BCTR]

...Rob should rename this channel

[@dustinsexton5273]

@@B16BCTR to what?

[@SloppyMechanics]

dahm producing products on his own, on the fly, nicer than 99% of sema builds

[@cj15941]

You gunna ask him to be on the podcast, Hoop?

[@TheFanatic340]

Most sema builds are thrown together trash

[@allenlord3679]

I totally understand Valvoline getting together with dahm, the man will torture test all his stuff. But why TJ hunt? None of his cars ever move. Dahm out here doing BIG THINGS.

[@SloppyMechanics]

@@cj15941 would be nice to have him on for sure

[@tylerstone6846]

a trick for dealing with chatter when milling the header flange is to single-point fly cut it. if you dont want to buy a special flycutting tool you could also just remove all but one insert from a facemill and adjust your feed rate accordingly.

[@rippermagoo408]

Comments like this rock 👍 love this community

[@asylumental]

I don't really understand what you said but I sure enjoyed reading it...its always so enjoyable reading intelligent people talk about the areas that they know. Maybe not for everyone, but I love learning technical stuff.. I remember another video there was this engineer talking about chassis science, such an interesting comment thread...

[@SKYWURX]

Absolutely. Great advice, fly cutting is seriously underrated now the focus is on High Speed Machining (at least it was barely ever used/mentioned where I worked with a mix of CNC & manual).

[@bluechevycummins5738]

@@asylumental the cutting bit he’s using has multiple cutting teeth. Removing all the teeth except one will eliminate the vibrations causing it to cut cleaner and less noisy and less sketchy. Once you start getting chatter that means the parts are vibrating and can work clamps loose and send a bit or part flying.

[@dylanjones1286]

@@bluechevycummins5738 well the main thing chatter is a no go for is because the chatter means the bit isn't cutting symmetrically, it's over boring or egg shaping the material.

[@firemansam63]

The welding………Now that’s what I call, art!! I could look at that all day

[@Devilsweaknes666]

Isaiah’s legit.. someone in love with their craft is always a pleasure to watch. What a team.

[@naterg8ter680]

I was just searching for something to watch before bed. Perfect Timing!!

[@limitlessbuilds]

Could check out my build I’m working on too if you’re bored. 😂

[@sobrr13]

Same

[@noahgiger3178]

I just woke up😂👌

[@clapyocheek]

Same

[@b_man_420]

@@limitlessbuilds I've got to admit, that is pretty cool.

[@Matty.Hill_87]

You and isaha's relationship is amazing, working with a friend like that must be awesome

[@Pheatan]

24:54 Not the first time isaiah has given rob 14 1/2 inches of pipe

[@roypatterson9910]

I knew exactly what he was going to do when he was showing about moving his wrist, then getting Rob to do it! That's an old one! Lmao

[@xZet]

As a welder, this video was pure bliss.

[@addikotter4351]

an absolute TIG artist

[@travisshrey6720]

Agreed, but how does he tig in short sleeves shirts and not get sunburned?

[@xZet]

@@travisshrey6720 I primarily tig, and I know it's frowned upon by all the internet safety keyboard warriors but I do it short sleeved as well. And in my experiences, as long as I'm not going hard for 40 mins at a time I don't get burnt

[@amr1t_]

as a not welder I was astounded by how nice those welds were too :P

[@travisshrey6720]

@@xZet maybe it is just skin tone, I tried it a couple times for less than 10 minutes of torch time and my arms looked like I fell asleep in the sun for a couple hours. German ancestry for the loss :)

[@chancecallahan6094]

I’ve never clicked so fast!

[@EvilCerealBoX]

So fast, it's illegal in 5 counties.

[@bobftw2618]

The quote you’re thinking of is attributed to Isaac Newton-“If I have seen farther than others, it is because I have stood on the shoulders of giants.”

[@YouilAushana]

Yeah, I guess he continued the work of other rather than trying to reinvent the wheel.

[@Anon.G]

And I'm standing on his shoulders cause my highschool physics was all his work

[@ethanruedinger1630]

What up Rob! Happy to see a video from you, love your content a ton. Keep it up man!

[@jasonmajere2165]

Have you seen the banks power sensors and sensor monitors. They seem pretty sweet and banks has a lot of experience with forced induction. Things like how efficient your turbo is, how much power the turbo adds how much the power intercooler adds. Crazy stuff. Killing a duramax series really highlights it.

[@Sharkey_t]

A tidbit of info on the coolant temp sensors that may help in the future. GM used the same resistance scale on their temps sensors on all efi engines since the 80s, and everything prior to the ls is 3/8" npt thread. you can use either sensor and the ecm/dash wont know the difference. there is even a 1/8 npt version in the 90s saturns that can work

[@eco909]

For power steeing the Prius E-Steering also works really well. Only needs 12V, no CAN. With 12V it goes into "Limp"mode and supports as if the prius was driving 40kmh

[@RENO_K]

😂 even in "limp" mode it was able to turn the flat tyres of Jerry rig everything's Humvee

[@wyatteells9033]

same pump on superfast matts tesla swapped jag

[@IllegallyAcquiredKIA]

@@wyatteells9033 and hoovies mustang

[@marcuscoquer5958]

I wonder if a Prius pump would be enough for my LDV. Would love to get rid of as much parasitic drain of horse power as i can... Unless someone has a smallblock V8 extremely cheap in Norfolk UK

[@shaneh56]

Master craftsman @Isaiah! As always that manifold is 👌

[@Birb_of_Judge]

One thing you might want to think about for your CNC is clear coolant, that would make it easier for you to film. Blaser Swiss blue Synergy 735 is one of those and I've heard great things about it. But that's something when your current coolant reserves are used up.

[@DubaCavazinT]

Lost sleep is always worth it for daddy Dahm

[@KshooTV]

How is this channel under a million subs! get subbing guys! this Is such amazing work :D

[@AllPanicNoDiscoChannel]

"Way more horsepower and torque than the LS ever did" (but not as budget friendly as the LS would of been) lol

[@icebear9370]

Don't get me wrong I love rotaries but nothing beats the natural torque of v8s

[@chefcc90]

Oh no?

[@PokeIS300]

This has been the best 38 minutes and 13 seconds of KZbin watching pleasure 😍 watching this makes me want to go build something 😀

[@MarkTregelt]

This is Metalhead heaven. Thanks alot for finally using the correct senseful metrics 😀

[@plamendimitrov5762]

Everyone complaining how they were just about to sleep. Meanwhile I'm here just waking up with Rob Dahm video waiting for me >:).

[@Vincent_Morrow]

Inverting your sleep schedule to match rob upload times? Boss 🤌

[@RoBert-ix6ev]

3:55 now this IS a creative way to temporary position the turbo!

[@aydengobeli9154]

Let’s go new video!! 🥳🥳

[@AJKecsk]

Tig welding without an offhand glove, nice. Quick tan for your left hand!

[@xdavid3105]

Right when i wanna go to sleep 😭

[@Tom-xn7zc]

Great content once again, thank you! Solution for the chatter when milling the flange: Single point flycutter! Do some research on it, buy one or make one yourself, test it on some scrap pieces and you'll regret not using one before. The finish you can get with it is absolutely 💯. A lathe would also be a great investment for the shop. Making bungs would become 10x easier even when you don't have the correct taps and dies. Single point cutting inside and outside threads is super easy and quick with a lathe. And then you could invest in some basic cheap metric and dies for cleaning up slightly damaged or fouled threads on bungs that are already welded in place.

[@bradcarpenter1881]

How does Rob not yet have 1m subscribers?! This is unacceptable!

[@rcpsycho4356]

i’m finally getting a chance to go to SEMA this year! Hope I get to see you guys! So excited!

[@sonoragingerdoodles]

Rob Dahm Rocks! Thank you & Isaiah for helping to keep Rotary engines up to date and sharing your knowledge. I'm building a 13B and your videos help a great amount. I wish you would machine housings for stud upgrades. Wouldn't even care if something happened and they got ruined. To have a Dahm machined engine would give my Exocet major bragging rights. 👍 Much appreciation & keep up the amazing content!

[@KamikazeWombat]

Beautiful work Isaiah!

[@ChatNoirLe]

A tip for flatness, use an endmill and have a bunch of passes, the small diameter helps reduce machine tram error making your surface flatter than with a big face mill. Also a small surface plate with some backside sticky sandpaper works great for a quick finish.

[@The_Purp]

I know this is a random place for advise but at the same time the best place for what I'm asking, I have been looking to rotor swap my miata to make a reliable(enough) 400 hp miata. Looking for an engine to put in is hard enough or something I can trust. If anyone has a starting point for me that would be great. Love the videos,

[@logand8023]

It will be expensive, I’d look into k or j swapping to make the same amount of power

[@skeetyeetbeat3434]

Idk why but ever since I’ve started to weld anytime I see a video with welding I never skip a second of it but before that I would skip it all

[@justyngilliam4051]

Can we just get an hour long video if Isaiah making headers. Id definitely watch that.

[@Matty.Hill_87]

I could watch that dude work all day

[@DuranIndustries]

Like sexually? Haha jk unless…

[@pornking3152]

Best Intro so far ! Keep going Gangster 😂

[@harryhollings8738]

What's up with the white fc in the background at the 17ish minute mark?

[@dylanwatkins1019]

Yeah the new Garrett G series turbos are awesome. I have a G25-550 reverse rotation on my 15’ Ford Fiesta ST it’s incredible for its size.

[@dubiousf00d]

Was about to call it a night! Not anymore 🤟

[@nerdethexperience1392]

Perfect watch for before bed. And hey I'm looking to two rotor swap a mait, perfecttt

[@jonathanmedina3522]

Back to back! Not used to it, but you know you have to watch immediately!!!

[@Andrewlang90]

I love your content! Never owned a rotary, (or LS before) but watching your videos makes them look like something attainable. To be fair, if you put a turbo on a rotary, yes it’ll make it stronger then an LS. That out of the way, your drivetrains are gonna be bulletproof by the time your R&D hits the market, and I wish you lots of success when you reach that point

[@loganthompson5961]

These videos make me want a rotary so bad

[@Jacobtheunwise]

@FuNdAMenTaly FuCt wtf have you been smoking hemis are the weakest of all v8s🤣

[@joealex65]

The RotaryVette is back baby! And it wants some LS blood! 😈

[@DracoRemixer]

That power steering pump is actually perfect for the Mazda theme, even though it's a Corvette haha. The Mazda 3 and Volvo C30/S40/V50/C70 all shared some parts with the Focus as they were built on the same platform. Volvo and Mazda both used this FoMoCo power steering pump, whereas Ford didn't as they deemed it was too weak.

[@newtonfirefly3584]

Ford owns at least 25% of Mazda, and in many models use many common parts.

[@abdulsadiq8873]

Yay Isaiah! Welcome back

[@d4rkz3r08]

Just posted? Welp, I ain't sleeping anytime soon

[@Runningnthe90s]

I will never get tired of how abruptly his videos end lmfao

[@BoostedBrando]

The whole video I kept telling myself, man this is probably almost over, checked and plenty of time left, then all the sudden it was over over. Like shit. Good content !! Excited to see this thing together.

[@andrewable2634]

You know the videos are good when you don't skip a single second and watch all the way through...everytime... fantastic stuff man

[@aserta]

You need a fly cutter for stuff like that. Wheels (regardless of size) are for rigid cuts. Single point fly cutter for anything that's flapping in the breeze. ALSO, you need an adjustable jack set, would've been perfect to stack under the pipes when you made the cut, to reduce, somewhat, all that chatter.

[@LoneWolfPrecisionLLC]

He's also running super low rpm on the cutter. Personally I would have run 4500 rpm and 30 to 60 inches per minute and 5 thou at a time

[@awilliford]

That manifold is pure art. I get the reason for same length headers. I have also seen where people have done the same thing with diesel exhaust headers. Asking for a friend, I cannot help but wonder why the V8 motor heads don't do the same thing.

[@paulbelanger7383]

Ok... um.. second comment from me, I really don't understand why you just cut off the video without any recognition of your subscribers and thanking people for watching your videos. Super weird and off-putting. I don't think I will subscribe, based on this jarring end to your videos. Should you get a better editing script, and an actual outro, then maybe. But right now, it just turns me right off from wanting to watch you. Sorry. But good luck with your build.

[@wcostakis]

That looked like a ton of fun. I love watching these videos. Great job guys!

[@JasonSmith-je6dc]

Awe man! Why the clickbait Rob! I thought you were finally coming out and going deep into Isaiah’s RX8! You tease! 🤣🤣🤣

[@Taverius]

I'm always here for more of Isaiah giving Rob shit 😌

[@4familyman]

Video 4 of suggesting Rob do a “this vs that” with my 3000GT TT LS swap AWD vs 4 rotor AWD (when it’s ready),,,, let’s do it!

[@jacka5676]

Rob, could you machine something for copper crush washer, to help seal?

[@asylumental]

On a more serious note, The wrist relief that Isaiah was showing you is legit, it actually feels great and is one of the healthiest ways to "crack" your wrist. You can do it on yourself to make it less awkward 😆

[@brytonmassie]

NGL I was expecting something much more cursed from Isaiah on that intro, and I'm glad he didn't lol.

[@shaterproofblosm]

So much Rob Dahm Content!! :D Love you guys

[@tejasparab2389]

You've written 'reliable' in you caption by mistake.

[@bhill31700]

love you man keep up the great work

[@chrispynaples]

What about the 6 rotor?

[@jorwang1991]

Your videos are a real vibe on mushrooms.

[@jean-christophegallant8855]

So happy I didn’t go to sleep yet!!!

[@mattm3492]

Don't you want less heat on the turbos? Heat kills bearings, but most importantly if your turbo is hot that means your intake temperature is hot and we all know hot air equals less HP. So technically the further away from the exhaust ports the cooler it'll be giving it more power. Or am I missing something

[@Thee_Snow_Wolf]

While indeed heat kills bearings, the bearings themselves are lubricated and most importantly cooled with the oil. So as long you can regulate the oil temperature, you shouldn't have turbo life concerns. As for the higher intake air temps, you can always use a larger / more effective intercooler to remove the excess heat from the intake air. For a turbo engine you always want to trap as much heat as possible inside of the headers. The exhaust headers they use in F1 are ceramic coated and fitted with heat shielding. While some of that is to protect items near the exhaust, another part of this is to make such as much heat as possible is spinning that turbine.

[@KingDeadMan]

I thought this video was an April fools joke, but I remembered it was still October. 😂😂😂😂

[@freakysteve140281]

I’m surprised with the turbos, pipe and having Isaiah that the lambo doesn’t have twin turbos on it.

[@aliabdallah102]

ROB UPLOADED ON MY FUCKING LUNCH BREAK WHAT UP! Hi Rob!

[@QuidproMoto]

Love the channel! Please remove the acetone from the welding table. I want the content to continue 😑

[@rosegold-beats]

We all need an isaiah in our garage

[@p.e.r.c.y]

Isaiah laying dimes. Might want to add an expansion joint between the wastegate and down pipe.

[@Zoey_yea_boom]

One thing i look forward to in these videos is Isaiah & Rob giving each other shit. Being a Kiwi i just love it

[@blitzroute66]

As a brit I agree. Good banter = love

[@thman6453]

Please do a collaboration with Richard Holdner 🙏 that would be epic 👍

[@massminer2343]

Rob dham is my reminder that I should be paying attention in thermodynamics

[@mariosnikolaou5212]

Holly shit 40 minutes for the absolute goodness of a finish at the end

[@MotorStorm]

What a way to start the week-end, thank you Rob

[@ukfozzybear]

Rob and Fab daddy. Such a great match. Fun and function in the shop.

[@Ayane13b]

You should invite Tom Scott over to build a Rotary engine 😂

[@joseygeorge9316]

Why can’t you just ducking out the exhaust flange on the belt sander it level it. Seems like it would work fine

[@gloglas]

When he gets more power on 4 rotor, he then starts removing doritos and making even more power.

[@QRWASUPER]

I love that this content is sooo deep now into fabrication

[@danielkarlsson8898]

IF the powersteering pump doesent work you can use one attatched to the steering column from an opel corsa c. There is external controllers aviable for them, or you can controll it with your ecu against wheel speed. Im using this variant.

[@tommylyeah]

👀👀👀👀👀👀

[@BecksArmory]

You got to be careful taking super light passes on SS. If you don't cut fast enough you can work harden it during the cut. Basically it will go from 30 RC to 60 and then shit rips out of the vice. lol

[@jaydub8576]

1:58 What is this company Vulvo you speak of?🤔

[@ethanstefanisin6509]

Heads up the Volvo power steering pump is kinda shit