When you run a 3-foot-long intake manifold on your minibike

[@SDS-1]

I've literally been waiting watching aaallllll day for this!!!!

[@Black66]

LOL Right on!!

[@SDS-1]

@@Black66 I've said it before and stand by it still. This is the best small motor tinker channel of them ALL!! You do more serious work AND fun stuff than the other heavily sponsored channels

[@Black66]

@@SDS-1 Thanks man, I appreciate it.

[@SDS-1]

@@Black66 thank YOU Mr.66

[@Dodgevair]

Our thoughts on the current controlled EXTRATERRESTRIAL reality disclosure process and related US GOV cover-up? Once the uneasy, contagious giggling subsides, how will our civilization and the mislead sheep adapt to this publicly known reality? Are the good Shepherds withholding the truth in our best interest? Perhaps multiple species are involved? How will the 80+ years of dishonesty be addressed? Has the cost of maintaining the lie exceeded the price of simply telling the truth? Is it time this great country start walking the walk? What might be some of the potential implications of disclosure of this reality? New energy sources perhaps? Transportation? Religions? History? The economy? Race relations? Politics? Perhaps it leads to confirmation of an established "secret" space program? But does the flock really want to know the complete story?

[@rachalhollier5679]

The only intake I seen that they claim go gains is the mini bike badass that puts the carburetor on top of the fan shroud with the inlet facing forward,the faster you go the more ram air effect it has! But this deserves 2 thumbs up

[@csaelite2399]

"the long tube will cool the intake charge" lmao you're a savage bro. A+ for this science backed trolling. Reminds me of all the exhaust back pressure arguments that used to float around the forums back in the day.

[@4saken404]

Oh thank God. I'm new here and I thought homie was being serious. Absurdity aside the claims of gaining 10hp off of what I can only assume is a 6hp motor had me all like O_o.

[@moistydad]

Man, you almost doubled your fuel capacity with that fuel line

[@Black66]

LOL yes it did !

[@speedfreak8200]

Ha, an old Nascar Trick

[@thefunniestfarm4731]

@@speedfreak8200 Ya'll only restricted the fuel tank capacity, nothing in the rules says I can't run 11' of 2" fuel line. -Smokey Yunick

[@tonybrown2135]

Insert Days of Thunder tones Harry Hogge : I'm gonna give you an engine low to the ground... extra thick oil pan to cut the wind from underneath you. It'll give you thirty or forty more horsepower. I'm gonna give you a fuel line that'll hold an extra gallon of gas.

[@tonybrown2135]

Love these videos!

[@135396]

Definitely love to see a ram air set up! Dual plug cylinder head sounds awesome as well!

[@jamesbuckley907]

The decrease in performance was obviously due to the weight of all the zip ties lol. Im actually surprised it ran as well as it did, particularly at low RPM considering the fact that fuel tends to drop out of the air flowing through an intakeover a longer distance.

[@SpACeCruizeR2o3]

That is too funny he's dead serious tho thanks for having a sense of humor not like some of these mighty sand crabzzz

[@lancasterjim2441]

Dude, love your humor crackin up over here

[@wheressteve]

"Let's see if we can back that up" while reaching for the pullstart handle is just the type of ungrounded optimism I needed !

[@VirtualCryptid]

Put the tube before the carb to let the air ram through the carb vs trying to keep the air fuel charge suspended

[@briansharp4388]

I know straight is optimal, but for the massive amounts of hp gain, perhaps a few gentle bends? 🤔 if it fit and didn't cause so much drag.....

[@garykeenan3724]

This guy lol too dumb

[@speedfreak8200]

Isn't that the way it is now 🤔

[@VirtualCryptid]

@speed freak no, he has the carb at the far end of the tube... meaning the entire fuel charge needs to stay suspended...by putting it the other way he can possible utilize the intake ad a hermholtz resonator and get a better charge

[@jamesfalvey77]

One of my favorite channels . Thumbs up for science

[@DeVoNmotorsports]

0:28 the length of the exhaust tubing will change the pulse width of the exhaust charge exiting the pipe to achieve a boost in power/smoothness response at a SPECIFIC RPM called ( coming on the pipe ) commonly used to describe 2 strokes engines powerband where pulse width it is more dynamic and more commonly optimized, LONGER = lower rpm & SHORTER = higher rpm,

[@David-dv6yv]

I just love it when good people do this stuff! For what it’s worth man, I think it’s awesome!👍

[@grampysgarage7527]

Love it ! Cleanest cable and fuel line routing ever . Can't stop laughing

[@toddcooper2563]

Back in '82 I was in vo-tech school studying diesel mechanics and during the last week before summer vacation, our instructor who also had a Chevy Vega funny car, showed us how to make boost on a Briggs & Stratton. He cut about a 1 1/2" hole in the flywheel shroud level with the flywheel cooling fins and mounted a Chevy thermostat housing over it. Then he ran a radiator hose from that to the carb. It actually made a positive difference in power. Later we milled the aluminum head to increase the compression. Needless to say, we scattered that engine, but it ran like a scalded ape up until that point.

[@Black66]

Sweet!! sounds like a video idea!!

[@shrugger1]

Now I'm excited for the upcoming big block Chevy testing.

[@Brady_builds]

I love this “series”

[@SpACeCruizeR2o3]

Been waiting since the last vid dang boss that mini bike expert he is one smart fella

[@OGbqze]

A forward facing ram air trumpet for the intake would be cool, also I wonder if running a tiny intercooler on the intake side would do anything. Probably not.

[@MrTheHillfolk]

Oh that's simple 😃Pour liquid nitrogen on the pipe while making a pass to cool the intake charge.

[@smartassist9700]

Holy COW……WHAT IS THAT? FIRST MINIBIKE I HAVE SEEN TAKE AN ENTIRE LANE WIDTH ALMOST.

[@rogermcdonald1607]

Very cool , but i would love to see you do a intake with the tornado type air filter that they did on small block Chevy engines ten years ago. They supposedly made more HP and MPH. Just a thought! Really love your channel and ideas you come up with.✌😎🇺🇸

[@mikegamba580]

It might actually do something to because it's carbureted

[@MyRadDesign]

The long tube in the airstream offset the performance gains you expected. Additionally, the drag was asymmetric so you would be continuously turning to correct, causing further power loss. Try a ram intake that is at or near the centerline of the bike, before the carb.

[@Black66]

Ram video coming on Saturday.

[@ronp5778]

I had an exhaust pipe my friend Aric an I made that was about 24" long, I named it EVEN-FLOW. I used it on my Baja Viper with a 212cc Predator.

[@moistydad]

What kills me the most is having that fuel cut-off that far from the carb

[@sconniejohn]

Can only make left turns, but hey power is power!

[@justinblake7355]

You need to connect the exhaust to the intake. That is how turbochargers work so that will make it very fast.

[@Black66]

Check out the new video coming out on Saturday.

[@NVScrapper]

🤣🤣🤣This was too funny....It's like Bubba J on Jeff Dunham, you can only make a left turn! 🤣🤣🤣 Glad to see you are having fun and still testing at the same time! Good video, can't wait to see what's next! BTW...I like that mini bike expert. 😘

[@kevinsellsit5584]

Before I'd go machining the head for another spark plug, I'd figure out a way to put an accelerator pump near the engine to clear up that 0 to 5 mph lull while the engine is waiting for the "jump to light speed" that is quite clear in the first 0 to 30 run. Use a push pull throttle and make push cable release a spring loaded (jet-able) accelerator pump. Fine tuning will be required. Should bring you into the 3.0's so hold on with both hands. ;)

[@williamrosenow6176]

I think the low end lag is the time it takes the small engine to draw a vacuum on that long intake pipe. He could put a 90 deg, forward facing with a scoop to help or maybe a 90 deg up so the charge falls towards the engine. Got to get the fuel/air charge to the engine faster at low rpm. Maybe a smaller diameter pipe too that's a big intake. Like you said it probly needs more fuel on takeoff too.

[@kevinsellsit5584]

@@williamrosenow6176 At idle before the run, the entire length of the manifold has the maximum vacuum the engine can produce, but the lowest velocity it can produce. When the throttle is slammed wide open the engine will get a massive gulp of air (with idle richness fuel already mixed in) but then the manifold has almost no vacuum, but atmospheric pressure helping to fill the void while the engine is waiting for the now open main jet's fuel rich mixture to finally reach the combustion chamber. Notable improvements would result from fattening the idle richness until it was on the verge of fouling the plug, but who wants to sit on a minibike in a black cloud of poisonous gas? Not to mention when all your buddies go rippin off and you stall just as you hit the gas. That being said, a tiny squirt of fuel just as you dump that massive gulp of air into the cylinder would be just the ticket unless you are holding a camera in one hand ... The bike will leave but you will not. Another good option would be a vacuum operated carb that will maintain intake velocity for you even if you slam the throttle plate WFO. They have an accelerator pump as well.

[@TiaanRides]

I was waiting for this video 😃

[@davebaker9128]

I agree with the idea of o velocity stack on the inlet side of the carburetor, perhaps equal length from the end to the butterfly, then butterfly to backside of intake valve, if aimed into the wind, the float bowl vent should be in the velocity stack near the carb

[@Bot_Brad]

9:51 Close Captions think intake sound is Foreign Language

[@SimonGonzalez-og2wx]

I don’t even know how you come up with all these ideas it’s looking good though

[@CJLeTeff]

What about running an intake facing forward with a wide mouth to catch lots of air and funneling it down? Ram-air?

[@silverbell800]

Now you gotta run both at the same time.... Lol

[@sbartasek]

The diameter and length of both the intake and exhaust, if tuned exactly right, will create a supercharging effect at very specific engine RPMs. One will be strongest, but multiple engine speeds will get the boost. They could be 2, 4, 6, and 8 thousand RPM, could be 3, 6, 9 thousand, could be 4, 8, and 12k... in between those boosted zones though, there are areas where you actually have LESS power than before. With dirtbikes and sport/race street bikes, most of the time we use a longer exhaust and tune it because it really helps and it gets the exhaust away from us. Then we use the shortest intake possible to keep from having any low power spots in the rpm range. I use a tuned exhaust manifold that is close to 2 foot long all by itself on my pressure washer. Older Honda gx160 (I think?) Opened up the jet in the stock carb just a hair. Made a HUGE difference. It's a pressure washer... but it actually works a LOT faster now. The thing is... it only runs at ONE engine speed. Doesn't matter if it has power at 2000 or 5000 rpm, because it NEVER runs at either one.

[@Black66]

👍👍Check out the short VS long intake videos! kzbin.info/www/bejne/bpvUq6Z-bK2dgpo

[@Guitarhero1000]

No no no. What you need is a couple jegs and summit stickers on there. 😂 Hey what was that minne bike expert doing with a chop saw in his hand? He's not divulging all his secrets.

[@MissionaryForMexico]

You know how to tell a story!

[@NONAME-kw3pu]

just love it when good people do this stuff!

[@bartpang]

The aerodynamic drag of the intake hurt more than the length helped. I would angle the intake back and mount the carb about a foot or so from the engine. Then try adding tubing before the carb to see what works best.

[@paradoxworkshop4659]

The weight savings of no longer requiring a kick stand is staggering.

[@smokeyi477]

Love your videos keep ‘em coming

[@willylickit8694]

Cant wait till next week

[@tomupchurch4911]

Check the carb and verify Full Throttle opening when you have Full Throttle on the twist grip.

[@chrislafever4350]

I'd put tube before the carburetor and consider bending it in a U shape. Therefore gaining ram effect from forward movement.

[@MarkRopel]

You need to taper the intake down, to increase fuel velocity, before you double plug it.

[@BruceLee-xn3nn]

Dude you're becoming the Richard Holdener of minibikes.

[@bret2870]

Oh you forgot to put the earth magnets on the fuel line 😂😂😂

[@charlesleake930]

Now put a " Spiral " inside the tube to aid vaporization of the fuel.....the spin helps drop the vacuum lever....would be another fun simple test.....bx cable casing might work ! ..cheers : )

[@Black66]

Check out the video on Saturday.

[@thereal_bigchop]

Another great video🤙🏻❕

[@johnpowell6386]

This is the first video of yours that I’ve watched and if The rest of your videos are as good I’m gonna binge watch them right now but hey before I do that I was wondering what the fuel consumption difference was could you post that please have fun and be safe awesome stuff! keep it up!

[@danowens7145]

I heard you can use a smog pump as a supercharger for these small engines.

[@edwardcold7431]

I think you should try the intake strait shot to the head and put a bolt in the end of the exaust to help with harmonic reversion

[@richardcoram1562]

Man that's cool! I'd likely swap out the long 3' intake for a long but spiral coil intake - mounted on the side or in front of the bars.

[@MrTheHillfolk]

Yeah.....and being a spiral it'll add swirl. Everything needs more swirl for maximum horsepowers

[@wolfganggoyim]

The law of diminishing returns

[@adriennebrown6434]

Can't find x18 wheels nowhere because u got them all😂

[@Ethan-mn9gi]

Need to use a intake that starts at say 4 or 5 inches and funnels down to the side of the carb over 2-3 feet (essentially giant velocity stacks)

[@joewoodchuck3824]

I used to love my minibike. I built it from scratch. I registered it for road use too.

[@joe-dp3ng]

I'm not sure what your expert is all about but as a master small engine tech I can say the emulsion tube in your carb is designed to make the fuel become a mist before it gets to the intake valve for a more consistent burn than fuel just pouring in and with that length intake manifold you won't have a mist going in anymore as compared to a shorter one. It doesn't matter as much at full throttle but it won't idle as good as it could. Let me know if you want to know something as you don't have any questions I can't answer about small engines so feel free and I will reply to you. Oh yeah no two spark plugs won't give you any noticeable power but it will make the ignition more dependable. Next?

[@Black66]

Check out the playlist on the channel. These videos are for fun. And Man it was fun filming them! The minibike expert is a Genius! 😀😀👍👍

[@joe-dp3ng]

@@Black66 k I will I'm glad to hear that so thanks it's all about having fun

[@danpetermann6509]

I'd try running the intake pipe vertically as there is less chance of the fuel falling out of suspension. Use a smaller diameter pipe to keep the air velocity up and maybe rejet the carb.

[@Black66]

Check out the video on Saturday .

[@supermikeb]

I've always wondered if a longer intake could help the fuel more completely atomize/evaporate and get better mileage.

[@rachalhollier5679]

Man, I been watching you for a while now and you just about did it all, lol!!! You need a Briggs and Stratton Lhead(flathead) 5 hp to compare with the modern ohv clone engines that are so readily available. You can find them everywhere and cheap too.good ol I/C iron sleeve for real cheap and billet parts too. They rpm really well,heck I rather mine versus my Ducar regular head, they just have a unique sound like no other!! Anyway, great job Black!!!

[@Black66]

Yes, I want to run one on the channel. We used to race the Briggs flathead back in the 80s. We ran Horstman billet parts with Tillotson carbs running them on methanol. Check out the pics way down in the community tab.

[@kevinsellsit5584]

@@Black66 I never got that serious, but I had a live axle cart with a 5hp B&S with 13 6.50 6 tires and I have a pucture with the police radar gun on me 53mph. I was young and my buddy and I would ride in this massive carpet mill parking lot with nothing to hit. We cut up the cardboard tubes from the trash to use for cones. I was WOT when the cop pulled in ... I rode slowly back to the car assuming the day was over, but he hung out for at least an hour clocking us through different points in our track. To protect and serve. Lol

[@Black66]

@@kevinsellsit5584 Those were awesome days! We used to do the same back in the 80's with Karts and minibikes! Fun times.

[@kevinsellsit5584]

@@Black66 That was circa 1982. Also had a Fuji Robin 175cc 2stroke with a flywheel starter generator which would start in forward or reverse. Had a small switch beside the seat just flick the switch back floor it to about 15mph backward...crank the wheel, flick the switch forward (hang on) and bam! the perfect "rockford files turn" every time. Good ol days indeed.

[@Black66]

@@kevinsellsit5584 Yes sounds awesome!

[@andrewkuhtz]

What do you plan on doing to the barbie bike with that sledge hammer? Lol😂

[@Black66]

Not sure what the minibike expert was doing there...

[@obbyjep7597]

Maybe try smaller diameter to keep the velocity up

[@3GingerCats]

I know its a piss take for entertainment purposes... but dont try fitting a another spark plug. raise the compression ratio to 13:1 instead, and go back to the GPS manifold and put a long forward facing snorkel on it with a massive funnel on the end and RAM that air in there (very high compression ratio and positive air pressure, what could go wrong?)

[@astro6272]

god dang, send that shet!!! got my own build and its been fun I just need the money and time for it haha

[@scottwiley]

You should patent that "Long Ram" intake.😂

[@Joeameturexpert]

You can expect to double your hp if you point your intake and carb forward like a ram air joust.

[@travismoore7849]

What if you cut little hole all along the last foot of intake and wrapped carbon felt around it. And just put a small air filter on the end?

[@justinjoyit13]

I'd say that you need to angle the intake behind the bike like the exhaust- the drag will negate any HP gains otherwise

[@Black66]

Check out the 7 foot exhaust video. It makes up for the drag LOL kzbin.info/www/bejne/nnyXY4x9o5ysjrs

[@nathanbutcher1864]

Love the vid, what would be your favorite camshaft for a top end speed mini bike?

[@wetpuet]

Design the intake in loops to reduce its length outward. 🤘

[@freddyguy6297]

What if you coiled the exhaust and intake and maby made them bigger ,then they wouldnt stick out as much? Just a thought

[@obbyjep7597]

I think the resonance of a 3 foot intake on that motor would favour around 2300 rpm

[@noahmercy-mann4323]

Actually betting that a 10-12 inch long smaller-diameter intake tube would increase bottom end torque and drop 0-30 times without dramatically hurting the top speed. The old Chrysler long ram 413 achieved over 100% volumetric efficiency naturally aspirated at low RPMs by creating a "ram" effect in a narrow RPM window, and many modern engines employ that tech.

[@craigpennington1251]

Volume all but gone. Otherwise a good video. It may be You tube that's doing it. I've noticed the last 3 months that video volumes are very very low. My equipment works fine. P.S. I would run the intake along the froma and up the rear of the bike so you can effectively lean your bike in turning.

[@halfwaydecentvehicles]

When the intake valve closes it makes a bounce back, Honda would measure the area and shorten the intake or ?

[@2000freefuel]

for better throttle response I'd have mounted the long tube between the carb and the air filter!

[@Black66]

Here is a new video with fantastic throttle response kzbin.info/www/bejne/b3yoaphjaLB7qLc

[@miguelpagansr6128]

I'm surprised that it even turned on, we'll see what's next.

[@wudznutt6732]

That long intake should theoretically help torque, which might help you on the hills.

[@donaldshimkus539]

I wonder what the drag coefficient is on that intake with all the junk on it and sticking way out there. Try a trumpet end on the exhaust to help scavenge and curve the intake tube around the back and come back up front with it. Put a funnel stack on the carb to force more air in. After you get the results from that, install a blower driven by the chain at 10% overdrive. If you still have a running machine after all that, I can come up with more ideas, like nitrous.😅

[@Black66]

Here is the video on the RAM AIR intake, kzbin.info/www/bejne/b3yoaphjaLB7qLc

[@Baard2000]

Not noticing a sign pole on side of the road makes it turn HARD right ( wing..😂)

[@craigcook1571]

I can see bad things happening Tim!!! (The tool man) Lol 😂

[@Black66]

Is the minibike expert Tim or am I Tim?...😀🤔🤔

[@baileymurray5592]

U should try a alternative fuel in this intake manifold like alcohol or something like that to see the gains that would be interesting to see

[@baileymurray5592]

Great video by the way man

[@Black66]

Thanks! Ya, I would like to try that !

[@dw9096]

Your new longer intake should be routed to the front of the bike and use the wind coming at you as a forced feed. Like a hood scoop on a car

[@Black66]

That video comes out this Saturday

[@paulmusick1133]

Does it have to be straight,or could it be a hey Carl hey Carl could it be in a how about a curl shape

[@VigilanceTech]

The longer intake would give the fuel more time to atomize which would tend to make it run rich. Lean it out a bit and try again.

[@Black66]

Check out the video on Saturday

[@darylSKYTZOwillis]

So why not put a u bend in the intake so the carb comes out between the forks and through a velocity stack for a little ram induction?🤔

[@Black66]

Ram air intake video coming out on Saturday

[@michaeldvorak5556]

I'm only 3 minutes into your video and, personally, increasing exhaust back pressure (BP), and increasing intake restriction will hurt your HP. The expert must have meant every foot will decrease, not increase. But, let's continue. Exhaust is way more complex than I originally thought. True, you want to reduce or eliminate BP but if thats all, use a big diameter pipe. But, that won't work. The right diameter and length exhaust pipe will actually create a vacuum clearing out waste gases from the cylinder. That's if I'm understanding this topic.

[@stevep4713]

You CAN TRY WITH THE CARB ON A INTAKE THAT IS ANGLED 35 DEGREE UP WARD BEND SAY WITH 1/2 THE LENGTH MOUNNT CARB AND THE OTHER 1/2 STRAIT UP WITH A 45 DEGREE AIR INLET FACING THE FOWERD INCOMING AIR CHARGE ADJUST A FUNNEL OPENING TO CACH HIT OR MISS WHAT SIZE WILL BE APTIMULL HOTTER IGNITION COIL LARGER GAP 40.THOU.

[@Black66]

Check out the video coming out this Saturday. Ram air set up.

[@Archermboi]

I’d like to see it at 1.5 foot or 1 foot and see how it does!!! Good video !!

[@aceboardtheangler5252]

It’s sounds pretty gnarly

[@blastingcapps4341]

Couldn't stop laughing the whole time watching this

[@kitsimmonds.344]

Could you not make the intake pipe into a smooth S shape so it could run parallel to the frame? Would be considerably more practical.

[@Black66]

Ram air video coming out on Saturday

[@mikesbarn1858]

On the bright side it’ll take you 15 minutes to realize that you ran out of fuel.

[@joneserupinsmoke9161]

wonder if it works on two strokes too

[@MrIngorodrigues]

I bet it had to be some ratio related to displacement

[@Crazyhorseracing461]

Just curious, did you jet the carb accordingly??

[@bigc7t]

Alright....I think it's time to turbo one of those things... Get it done

[@Black66]

Yes! Great idea!

[@therealilxaiden]

@@Black66 smog pump super charger

[@___michael___7165]

Redirect intake forward. Reduce the added drag.

[@Black66]

That video will be out Saturday

[@charleswieand4445]

Run intake up and thru front forks for ram jet

[@Black66]

Check out the video coming out Saturday!

[@markeverson5849]

How I wish it had gears and you could shift it would be an awesome rap Tilla

[@richardcoram1562]

The top speed is generated from pulley sizes,right?