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- เผยแพร่เมื่อ 12 ก.ย. 2024
- 28MM PWK carburetor VS 24MM flat slide on a 223 stroker
Tested the 223 Predator-powered Mega Moto 80/105 minibike with a 24MM flat slide carburetor and then did the same test with a 28MM PWK carburetor.
Mega Moto Performance playlist - • Mega Moto 80/105 unbox...
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Instagram - Doubledown555Black66
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Parts used -
28MM D slide carburetor - www.amazon.com...
Intake manifold - gokartsusa.com...
58mm Hemi Predator Stroker kit - www.eccarburet...
32lb spring kit - www.eccarburet...
Tillotson 212R/225R head - www.eccarburet...
Chromoly pushrods - www.ombwarehou...
ARC billet side cover - www.ombwarehou...
Dyno F-275 cam - www.eccarburet...
REV Billet flywheel - www.studzracin...
Noram Cheetah clutch - www.ombwarehou...
24mm Flatslide carburetor - www.amazon.com...
Don't forget to leave a comment to let me know if you enjoyed this video! :)
*********Disclaimer*********
Please do not try to re-enact or recreate anything you see in these videos.
Black66 does not take any responsibility for injuries or equipment failure created by doing so.
ALL BLACK66 CONTENT IS FOR ENTERTAINMENT PURPOSES ONLY.
Excellent review! very nice bike.
Thanks! 👍
The amazing PWK carb...the best of both worlds. In general:
Round slide carbs tend to be easiest to tune and the round shape of the slide helps them transition smoothly from idle to mid range to WOT.
Flat Slides can offer incredible throttle response and are hard to beat in the mid and upper revs. In the lower revs it can be a challenge to get and maintain a good fuel air flow and mix. They can test your patience with tuning.
Between the two is the other "flat slide"; the D slide. It has the lovely low end smoothness of the round slide combined with most of the characteristics of the Flat Slide at higher revs.
I have that same PWK on my drag bike setup for methanol albeit a 32mm. One thing to remember on the jetting for those is, you also have a powerjet delivering more fuel on top of the main at wide open throttle. Main jet sizes will always need to be a touch smaller than what you'd use on a similarly sized carb.
Can you adjust this power jet ? I just bought one also 26mm
@@lp_rc523 Yes, it has a valve on top. Can also bypass it and just block it off if so desired.
@@WyFoster yeah I seen the power jet adjuster with spring on top I will take it apart and seen what jet is in there
@lp_rc523 there is no just just a tube that sucks extra gas outta the bowl..they are awesome for meth applications.
@@minibikemadmanyou familiar with turning these into meth carbs ?
I love the carburetor tests! There’s so many options available now!
Can't wait for the bigger jet comparison!
I use that exact same pwk28 on my zs190 Grom clone … it’s been amazing. Only complaint is lack of a bowl drain.
Loving these comparisons. The little adjustments and the effects they have. Stats on your builds are interesting.
I believe street bikes are the best thrill ride/ danger. Until I keep watching YOU bang out 70mph on a mini bike with a set of disk brakes for a tike-bike. You are mad crazy.
I will gladly say you minis’ are impeccably clean when the camera starts rolling Everytime.
Black 66, sweet video! Funny i just got my pwk 28 and 30mm carbs on wensday to test out and compare as well! It will be interesting once all the carbs are jetted properly to see what the differences really are…
This channel is so under rated
Thanks!
The adjustable power jet is going to be the game changer with that pwk !!
You should test your bike where people can see you just in case if you get injured or paralyzed they can help you… just on the safe side
I can't wait for the next video
I thought the cheetah clutch was slipping more than it should've been almost like it's not fully engaged until 4k rpm...I've been modifying the max torque and working ok. Love that bike though!!
Another great video....keep them coming !
Nice video, thanks for the comparison! I'd like to see more mods on this.
Sweet test. Now do one with different fuels. Pump and alcohol
That 28pwk is awesome.
To get any benefits from a carb that big on a small engine you’ll have to port the head & install bigger valves, Too big is usually bad
28mm is the optimal size for 200cc+-
You can of course run smaller to for perhaps some better low end
A little bird told me that a clone mikuni has bigger venturi than a real Mikki. Resulting in mo' ho' po'. My source sounds like "Redbirds massage" ;)
Vm22 knock off is actually 26mm. The genuine is 22, so the bird is correct. Lol.
Holy crap 🤯
It’s pretty funny how the chikunis (Chinese minkuni) work just as good or better then the real thing at a fraction of the cost😂
@@anthonyh.1512 chinukis 😂🤣🤣
Depending on the build I'd say. They'd be horrible going against a genuine on a two stroke, very difficult to tune! 😳 That's why alot of people blow up their two strokes, they cheap out on the carburetor and jets and can't tune it perfectly. I have no issue with generic pwk carbs on 2T engines but I only use genuine jets and I know how to tune a carb pretty well.
I run the 28mm ;D slide on my stock 224cc with a pipe and it boogies!
When I first got into this little hobby all I read was people were buying to big a carb for these engines. From the results of two videos from 2 different people this weekend that's not holding true. I believe I need to up mine to at least at 24mm. Thanks for the video.
What hydraulic setup you running?
Thanks! it's a GPS brake. Check out the playlist for the entire build. th-cam.com/video/VbcpA0jdSIw/w-d-xo.html
I see what you mean with the jetting. I just got a 24mm nibbi for my Coleman ct200u, and it has flat spots when you get on it. Hopefully a bigger jet will fix that.
Needle position if it's bogging with quick throttle inputs. Need about a 120-130 main at and around sea level.
How do you calculate the right gearing for the project bike you're working on I heard you once talking about someone that makes whatever gear ratio you want. But how do you figure tire size into gear ratios and all of that thanks great content like always
This is a good question that I haven’t heard anyone answer.
He was talking about volts mini bikes, they will make whatever tooth sprocket you want. It was his “75 mph with one mod” video where he tries out the 40 chain with a 4.0 gear ratio!!
Let’s get that jet in and see! Inquiring minds want to know!
What jets are you using on the 28mm
Great videos as always I would like to see you get a hold of a tillotson 212r mkii to play around with
I have a 212r mkii from EC that I ran stock and built as well. Any questions ask away. I just finished building a 225 tillotson high compression billet everything max effort engine yesterday to replace my 212R because I got the itch to go bigger and faster lol. The 212R is in my opinion the best out the box 212 money can buy. But nowadays so many 224, 223, 225 options, if your handy mechanically I’d go right to the tillotson 225 and save the time
It showed up with a perform.The twenty fourth millimeter with a bigger jet in that twenty eight d slidisplay
hey i have a question how do you move the fitting on the valve cover to look up i was neverr able to move mine
If you put a primer clutch on that bike it’s gonna sound sexy 👌🏽
that Carb looks like its made for a good ole HoT Tilly!!!! Lets Give iT Up for mR Black66 Gettin out there wit the trains n shyt keepin the DREAM ALiVE man WHAT ELSE is There To say you know Ken Block is smiling down
I say it's all about having fun. It doesn't matter if you ride a 1.7-horse micro bike or a 35-horse Alcohol burning rocket ship. It's all about having fun with this stuff. The day we stop having fun with it is the day we should do something else. IMO
@Black66 very true I see that minibike tommy selling 28mm flatslides would a regular 212 run a 28mm ??
Great video as always, what speed app do you use
Thanks! I use digiHUD on the phone along with the camera GPS for top speed and a Dragy performance meter for 0 to 30
What tool do you use to take the top of the carb off, i cant get those screws off to run my throttle cable
Mean looking bike. Surprised you haven't converted over to two stroke motors.
I would think, but do a plug reading. Thanks for the vids
i have the exact same 28mm carb on my tillotson 212 with hot 265cam and 3 stage exhaust and if i roll throttle slowly works fine and even gets 67 mph top speed but i cant drag race at all because if i snap throttle it cuts out completely and shuts off sometimes it cuts out and if it bike doesnt shut off the rpms drop below idle . ive tried pilot jets all the way from 32-42 pilot with 120 main and needle is mid position and ive tried messing with the air screw and nothing and it doesnt happen with my 22 mikuni or 24mm nibbi only with pwk 28mm any help would be appreciated im about to go crazy. thanks learned alot from you
Have you changed the needle? Sometimes It will cut out on quick throttle if its lean. If you lower the clip on the needle down one or two so it pulls the needle up a little more maybe it will help.
Are the needles interchangeable? I have a Amazon Mikuni or Maikuni PWK28. Thanks for your response.
The jets on the 24 would have been the first thing i would have changed and it would have been better then the 28 mm . Long story short , change your jets b4 you test.
What app do you use for the speedometer to show up on the screen?
Hey so I had a thought. I want to make a street build so I want to gear the bike high to hit in the 60's somewhere, so to get that covered I will be putting a 420 predator on (I want to keep the engine stock and cruise at low rpms). The problem with gearing it high is that lack of torque on take off and the risk of burning the clutch. I've been brainstorming about gearing and different ways of achieving what I want. And the best way I can think of is putting an electric bike hub motor in place of my front tire to assist with take off and acceleration. Do you think you could test something like that?
interesting, hopefully he sees this @black66
@@saidlara720 nah, it's probably a dumb idea anyway.
Отлично получилось! Молодец, автор!
How could I determine witch size Maine jet I should put in my carb
Ciao black,sarebbe interessante sapere la temperatura dei gas di scarico,great job and nice place!
What speed tracking app do you use? I’ve tried many but none of them have been very accurate
I use a Dragy performance meter. Super accurate.
Can you help me my 28mm PWK Carburetor keeps throwing out gas out of every little hole.
Change the main jet and do it again....
Recently got a 30mm pwk carb for my 224.
Was told by the internet to jet it down and is currently running a 38 pilot and a 115 main. I live at 500ft above sea level and was wondering if I should go back to stock? (35 pilot 125 main)
Edit: I’m running it long intake, with a velocity stack, and a stage 2 pipe w/ RLV muffler.
I'm up here at 3700 feet I'm running a 115 main in a lot of stuff. Maybe down lower for you, a bigger main would be better. You can always check the plug for that nice brown color after riding for a while
@@Black66 what pilot jet is working best on the pwk for you? About the same altitude
The 28 pwk,s are decent but the bowls warp even with that blue holder
What intake u use or is that one of that one u cut in half
Where did that clamp for the catch can come from. And is it holding up well mounted to your frame.
No problems with the catch can mount. The links for the parts used are in the description of this video. Check out the MM80 playlist for the build videos.
th-cam.com/video/m7DU8U9bwuk/w-d-xo.html
i have a stage 2 bike wt a hot 265 cam n flat top piston currently im runing a 22m carb and it wont idle and boogs tf out what carb u think i should run or ist it the jets i have no clue pls help
The floater needle keeps falling off from mines anyone knows why it happens?
Brianne Flats
Can you give me a link or part number for the boot and intake flange please?
The link for the intake and boot is in the description of the video.
I think that gearing might be too much. I’d put a bigger rear sprocket and settle with mid 60s top speed but 4.40 0-30? That doodlebug with a max torque and not nearly as modified engine was pulling those numbers
Can you run a nibbi 28mm on a modded predator 212 ?
Definitely, just need to jet it correctly.
Annetta Pine
0108 Lolita Gateway
I have a built 212 predator was wondering which carb you recommended. Currently running a clone vm22. Thank you
24MM flat slide works awesome on the 212 . www.gopowersports.com/24mm-flatslide-mikuni-carburetor-kit/ PWK, NIBBI also work well. I guess it boils down to personal preference. If you use a Nibbi you can get it in flange style so you can use the intake off of the VM22 to save money.
@@Black66 thank you
Keven Parkway
Hell yeahhh that's the same carb I got...hahahaha but I got it in n a 30mm flat slide in red
Zora Valley
Krystal Port
Conn Mission
Grady Port
Dude for your own protection u should waer a helmet going that fast
He is, even has knee pads and gloves.
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