RHB31 VZ21 Turbo – Amazon Affiliate link: https://amzn.to/3mMWAAu
If you would like to get a turbo of your own as well as helping our channel, use the link above!
This video was filmed the same weekend as Episode 1 so we haven’t been able to address the comments or fix the oiling system. In this episode we mounted a 22 mil Tillotson Carb to the turbo for a draw through system, get it jetted and hook up a temporary charge pipe and get some promising results!
Thank y’all for watching, stay safe, and be sure to stay tuned for the next episode!
MERCH
MERCHANDISE CUSTOM DESIGNED BY YOURS TRULY
https://teespring.com/stores/build-break-repeat
TOOLS
RogueFab Tubing Notcher
https://www.roguefab.com/product/versanotcher-universal-tubing-notcher/
Pro-tools Tubing Bender
https://pro-tools.com/collections/tube-and-pipe-benders
Optrel Crystal 2.0 Welding Mask
https://usa.optrel.com/en/eye_protection_helmets/products/show/crystal20/
Optrel Grinding Mask
https://usa.optrel.com/en/products/augenschutz/helme-zum-schleifen-schneiden/products/show/clearmaxx/
MUSIC
Music - Background and Montage Music Is From Endemic Sounds
https://www.epidemicsound.com/
Intro Song - Jimmi by Andrew Applepie
https://www.youtube.com/watch?v=l1zHz8pYfyQ&ab_channel=AndrewApplepie
—————PARTS—————
RHB31 VZ21 Turbo – Amazon Affiliate link: https://amzn.to/3mMWAAu
Pulse Pump- https://www.gopowersports.com/round-fuel-pump/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Seat - https://www.gopowersports.com/19-mini-bike-seat-coleman-ct200-replacement/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Chrome Shocks - https://www.gopowersports.com/universal-adjustable-standard-shock-12/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Chrome Wheel - https://www.gopowersports.com/6-astro-wheel-aluminum/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Inner Tubes- https://www.gopowersports.com/410-6-tube-90-degree-valve-stem/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Tires - https://www.gopowersports.com/13-x-500-6-turf-tire-2-pack/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Gold Chain - https://www.gopowersports.com/rk-gold-premium-racing-chain/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Fenders - https://www.gopowersports.com/4-25-wide-mini-bike-raw-steel-fender/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
¾ Lock Collar - https://www.gopowersports.com/jackshaft-lock-collar-3-4/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Brake Band- https://www.gopowersports.com/5-carter-brake-band/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Brake Band Pin- https://www.gopowersports.com/brake-band-pin/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Brake Cable and Lever- https://www.gopowersports.com/mega-mini-bike-brake-kit/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video

Jack Shaft Sprockets - https://www.gopowersports.com/12t-jackshaft-sprocket-5-8-bore/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Jack Shaft Lock Collars- https://www.gopowersports.com/jackshaft-lock-collar-5-8/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Jack Shaft (10 inch with lock nuts and key) - https://www.gopowersports.com/5-8-threaded-jackshaft/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Grips and Throttle - https://www.gopowersports.com/throttle-twist-grip-7-8/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Clutch - https://www.gopowersports.com/10t-3-4-bore-centrifugal-clutch-41-420/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
RLV Muffler - https://www.gopowersports.com/rlv-4104-1-5-16-exhaust-silencer-with-hd-ss-clamp/?utm_source=YOUTUBE&utm_campaign=Build_Break_Repeat&utm_medium=Video
Weld On Tabs - Amazon affiliate link: https://amzn.to/2XOoIIv

Oh so, in the last video we got this thing mounted up and it's officially a turbo rotary mini bike. So in this video we need to like actually make it work. You know doing. This is pretty easy.

The hard part is actually making everything run properly. So our plan is, we are doing a draw through setup, with this 22 millimeter makuni carburetor from gopowersports and we're going to try to go super simple. The flanges are very similar between this and this input on the turbo. So we're going to do is just clock.

This ever so slightly, so this is horizontal and just bolt the mikuni directly to the turbo, and if this kind of works and seals up, then what we'll do is we'll make basically an intake runner that goes down here under and then to our intake on the Motor but let's get this turbo clocked, okay, so sadly we cannot have a wastegate, because when we have the mikuni on here it hits right there and we just you know it's not gon na work. So basically we just have the wastegate still on here. So it will um kind of be the spring that holds the wastegate closed. Now our mikuni fits and it's pretty much level.

Does it fit? Yes, good cool? Okay, so we had to bore out the mikuni holes a little bit, but it should bolt up right up to our turbo if we are a little worried that the very top might not be sealed with the gasket. So we will have to see and kind of check if we have any uh like leaks through there. But this is basically the smallest package. We can get it's pretty nice all right y'all.

So it's a little bit invasive, but it looks cool. So we got the mikuni filter on so now. We're gon na do is. All we know is that we need to connect this and our port over here.

So what we're gon na do is take off the carb over here and kind of see how we can get it looped around it's gon na be tough all right also. Hopefully this is the last time the carb comes off. Look at how small that is! That's like my fingernail, what all right well now time to the drawing board and see how we're going to get pressure through that okay, so we got our mikuni throttle in, of course, some go power sports, so we'll get this kind of bolted up and get this Kind of zip tied out of the way that will be on to our intake, but okay, so this intake runner is actually really nice from saks um. It's got a nice step down, it's smooth and it you know, would be better than us putting like a large pipe going into this tiny hole.

So what we're gon na do is we're just gon na you know used to go like that. Just flip it around and it fits pretty much perfectly and then we'll just have to make a custom flange. But after we make that flange, that's really all the hard. You know fabrication.

We have to do yeah because i think what we're gon na do is we're. Gon na have a flange and then we're gon na have this hose yeah boost hose and then that's gon na go all the way over there and we're done this flange and we need it to line up with this hole. You know just like that. So just took a piece of tape: kind of rubbed around to get the marking of this in relation to the holes and yeah just need to drill a big old hole.
Okay, all right here she is so we'll get this thing cooled off, and this is our final piece of the puzzle all right. So we have some yamabond here. It's just like a high temp gasket maker, but it's worked well for us in the past. So just do a little bit on the each of the like high pressure side of the turbo and should help no backing leaks here.

No all right! So we put a little bit more yamabond on this, just because we don't have a gasket for this end and yeah. It's gon na be like that sweet, we'll get our pipe just kind of route, it all nice and go right in there we're driving there. We'll see if this thing makes boost yeah, i don't know 30 chance. It works yeah right out the box.

100. 100. All right, i like that, but we got the best charge pipe in the game. Man, oh y'all time to blow our apex seals sky high.

Everything is hooked up, pretty nervous. I guess, let's just see if it's looking like we're gon na have a miracle today, and this thing just fires right up and if it does then we'll be happy and if not we'll troubleshoot, let's go okay, it feels very, maybe some oil drain down from the Turbo it's very hard. We have fuel. We also probably need to prime the mikuni too.

There's like nothing in there hey. We got good vacuum, really yeah yeah, oh wow. It's really good! Okay, so the yama bun shouldn't be a problem yeah and now, let's try it a couple more cranks. I guess whoa all right turn the idle down yeah, i i think part of it yeah.

It might be too much fuel or not too much like there's a 22 mil, and that thing was like a like. You know really small, but i mean it actually did not run bad. That's turned out. I don't know how i've seen my idols yeah.

I didn't see the exhaust, it was pretty normal. It had some smoke so yeah. I feel like it's safe. Okay, that's good! It's very good! Whoa dude! It started.

But now it's starter food or anything. I said 100 chance would work. Okay, so so um we might have, we might need to like get some more play out of our throttle here. Yeah all right does it seem like we're all the way down.

I don't know if i think we're a little bit up really just a tiny bit up. Okay, i think we should. Is it going down dude way down really yeah like actually yeah? I don't know. Is it all the way down, though yeah? I think i need to raise it now, get it so it starts picking up all right.

I remember right at where it's picking up so cool that should help definitely yeah guys. This thing starts up way easier than it used to start up stock. That's kind of crazy, hey man, so i had a feeling the sax factory had it wrong and they weren't selling these with turbos you're right, hey. We got our turn now, i'm just going to leave it kind of loose.
Okay, all right round three time to blow up here we go: oh bro, all right. Let me let's turn it off. I'm gon na turn it up and raise it down or lower it. Okay, okay, ready wow, wow, so yeah that just worked honestly, like the fuel mixture, seemed pretty good, um, very responsive, like even more responsive than it used to be like, like, i think it's just going to be faster.

I think it's going to be like. Basically, the same like drivability, but like turbo yeah hitting boost and doing wheelies one doesn't what guys this work yeah straight up like yeah, i mean i guess, let's stay tuned for future vids, we got to kind of tuck this stuff up. We got a bigger sprocket back here, so we have a little bit more torque and if you haven't seen this thing driving, we have a really good video of this thing. Driving n a so go check that out i'll link it up here, but we did it.

Boys all right crew, i mean i'm kind of speechless, i'm at a loss for words um. The good news is, i don't have to do much of the talking, because look at this thing, um i do wish. We had a little bit more time. We could have like kind of put the chain on and you know driven it a little bit more or at least kind of putting it around the garage.

But we got to get back to college. So, as you all know, we're college students, and during the school year we come back on the weekends so be sure to stay tuned. Next time we have a chance to come back up here. We're going to be able to put the chain on make a little exhaust and really get this thing under boost, because you know i guess we're taking it one hurdle at a time.

We start with simply bolting up the turbo, making sure it actually spools making sure it can stay and hold its own weight. Then the next stage after that was actually just getting this thing to free, rev and run through all the intake piping, which seems really easy. But it can actually be really hard when you're actually trying to get a decent air mix. Air fuel mixture from where your carb is all the way down to where your intake is on the motor.

So we got lucky there. We didn't have any serious vacuum leaks. This thing runs good uh and we got super lucky. The first jet we tried out, worked this thing idles with the main jet, so we might have to mess around with the needle a little bit and stuff, and hopefully we don't have fuel cuts when we're uh.

You know getting in the boost or when you know we lift up the front too much, so we lose our fuel pet, but no i mean anyways uh, if you all have any recommendations put them down in the comments. Um. Just a little reminder: this thing's gon na get a nice um coat of chrome powder coat, so that's gon na be really sweet. Just seeing this thing come back to life, it looks really good, as is, but i think, a little bit of chrome maker, real nice, but anyways long-winded outro.

This thing's really cool, but thank you guys for watching. Thank you, go powersports and be sure to just stay tuned and we'll see you next time. You.

Avatar photo

By YTB

29 thoughts on “Turbo rotary minibike gets a carb and charge pipe! episode 2”
  1. Avataaar/Circle Created with python_avatars Life in Washington says:

    Seems like you guys are cutting a lot of corners just because. Not normally like you.

  2. Avataaar/Circle Created with python_avatars michael blacktree says:

    I'm surprised you didn't make a carb spacer. Anyway, this is a pretty cool project. Thanks for sharing! 👍

  3. Avataaar/Circle Created with python_avatars Shaun PC says:

    I have to be honest guys that sounds freaking awesome, now all I hope is that it the goes as well as it sounds.
    Good luck guys, I’m hoping that the recommendations others have given help you get this sorted but for me I would want the boost pipe to be metal and fuel resistant silicone couplers art both ends.

  4. Avataaar/Circle Created with python_avatars TURBO EVERYTHING says:

    You Have oil going in the drain side of the turbo and its coming out the in. You need to turn the cartridge around

  5. Avataaar/Circle Created with python_avatars Watch me do me says:

    Rotaries will make boost because every stroke is a power stroke. So it’s 3 pulses.

  6. Avataaar/Circle Created with python_avatars Watch me do me says:

    Team booted bought a one rotor kit. It’s used the front iron and rear 13b iron and rotor and it’s a single Eshaft it’s so cool. I’m sure you guys can put it in something cool like a bigger go kart.

  7. Avataaar/Circle Created with python_avatars Jesse Fex says:

    Well Done! I got km24 going to build it into a power wheels body. Your video was very helpful. My input for your build, try putting the turbo on the boosted side of the turbo. Less distance for the fuel to travel.

  8. Avataaar/Circle Created with python_avatars Jazz Flores says:

    Now it just needs some castor and e85 and she’ll smell even better 😍👌 should weld the flap of the waste and mount an external wastegate on the exhaust housing and run a screamer pipe 😝

  9. Avataaar/Circle Created with python_avatars BigCooter.com says:

    Brake looks deadly, lOL… a band brake on a HOT clutch drum??.. will fade horribly, and when the chain drops off.. you are screwed.

  10. Avataaar/Circle Created with python_avatars K3BIGWINK1ES Cambourn says:

    I’m only here to find out what happened to the old rotary cart.

  11. Avataaar/Circle Created with python_avatars Wyatt Scott says:

    Add a petcock at the back of the fuel tank and run a hose from it T'd in with the existing hose. That will solve your fuel issues while the front end is up.

  12. Avataaar/Circle Created with python_avatars Casey Sheaffer says:

    Be careful of fuel puddling in that long saggy hose

  13. Avataaar/Circle Created with python_avatars Sound with Style says:

    Those turbos are not designed for draw through. they will suck oil through the seal under vacuum.

  14. Avataaar/Circle Created with python_avatars Simon Yun says:

    Dude, u’ve gotten the turbo oil feed and drain backwards, the threaded smaller port is oil inlet and the big port with flange is the outlet, try clock the core 180 degrees. This definitely helped me with my turbo leaking a lot of oil, but my turbo stops spinning when I turn on the oil pump, and it still leaks a small bit…

  15. Avataaar/Circle Created with python_avatars the fat kid says:

    The old "handful of gas" priming technique

  16. Avataaar/Circle Created with python_avatars Homelessdrifter says:

    You need to have the carb after the turbo for more consitent and more boost, also your going to get a better flutter with the turbo before the carb

  17. Avataaar/Circle Created with python_avatars Rich A says:

    Make an aluminum pipe instead of that black hose. The hose kills the look!

  18. Avataaar/Circle Created with python_avatars Diesel Ramcharger says:

    why do you guys suck so badly at everything you do? are you even trying?

  19. Avataaar/Circle Created with python_avatars David Taylor says:

    You will need to "boost reference" your fuel tank so your fuel pressure increase as boost increases, assuming it makes any. Simply tap your boost pipe and feed back to fuel tank. Also you will need to use a one way valve for your fuel tank vent. Good luck, neat build! And you might want to reconsider hooking up the wastegate, you can use the same line.

  20. Avataaar/Circle Created with python_avatars Lewis Heilig says:

    Y'all need to make more oil with that thing dude I don't even see no smoke when y'all choked it or nothing

  21. Avataaar/Circle Created with python_avatars pvc says:

    Mounting the turbo rotated 90° around could make it possible for the carburator to fit better (on top of the engine).

  22. Avataaar/Circle Created with python_avatars thedge7 says:

    Okay, cool. But I've got to ask, who drives the Shelby?

  23. Avataaar/Circle Created with python_avatars Funner Than Before says:

    Something I just thought of, flat slides don't return well, IF the turbo has the boost power, it'll keep the flat slide open…

  24. Avataaar/Circle Created with python_avatars Broo_sh says:

    by to way some engines even small ones work with turbo added like they normaly is —> you must try it

  25. Avataaar/Circle Created with python_avatars K Fardink says:

    Very cool build! Interested to see it as you incorporate suggestions!!

  26. Avataaar/Circle Created with python_avatars Jared Budzinski says:

    Please please please make some good chain guards so you don’t shred that fuel line since it’s going right through your primary drive chain.

  27. Avataaar/Circle Created with python_avatars William Jenssen says:

    If you are gone run it draw through you should instead use a cv carburetor (24mm cvk?) and remove the throttle plate in it and instead use some sort of throttle plate or slide on the positive pressure side, that way you don't ruin the turbo seals when off the throttle and the turbo would last a lot longer.

  28. Avataaar/Circle Created with python_avatars Mish Will Race says:

    You guys can weld so a nice steel charge pipe would work a treat! Looks awesome as is already though. I would turn the little carb adapter back the other way and route the boost pipe over the top with a 180 to the intake port. having the boost pipe in between the chain will be such a ball ache.

  29. Avataaar/Circle Created with python_avatars Build Break Repeat says:

    ***This video was filmed the same weekend as Episode 1 so we haven't had the chance to address the problems with the oiling system yet or the comments and suggestions from last video. Episode 3 we will get it all fixed up but we wanted to show you the progress we made before we had to head back to college. Thanks for watching and stay tuned for episode 3!

Leave a Reply

Your email address will not be published. Required fields are marked *