Nibbi 19mm PE19 Carburetor on 139QMB GY6 50cc Maddog. Will A Smaller Carb Go Faster?

[@christianposekany1941]

Only person who seems to care about the 50s enough to go completely in depth video wise on them! Thank you for everything you do!

[@GhettoWrench]

You are welcome. Looking at my "analytics " on youtube, people like 50s way more than 150s. I love them.

[@christophersherratt7299]

I told him the same thing saves hrs of messing around

[@wesmadebuilds681]

I’m always a huge fan of making it work!

[@cav3man360]

Sweet video as always i got a china 50cc i dont have money for a BBK yet so im tryjng to figure out how to squeeze out any power from it i can

[@jayb5623]

I cannot find a new cable for the set up for the life of me. The cable that goes to the handle grip in the video doesn't have threads and all the ones online show threads. Where did you find the cable for this? I have the same bike and I've been looking for days now. I have all of the parts ready to order for this new carb set up minus the cable... I just need the right one. Any help would be appreciated. PS the dealer is sending me a new break caliper now because one of the pistons is stuck..ugh

[@GhettoWrench]

See if this works... can't paste a link. WTH. Search GY6 78" mikuni throttle cable on ebay. Like $11

[@jayb5623]

You are a life saver! Thank you. I was trying to find it on Amazon before and the longest I found was 72". Now I can place my order! I wouldn't have been able to do this without your channel. Thank you

[@churchhalfling]

Been chatting with you about my cvk 150cc issue... I just said fuck it and ordered a Taida bbk and nibbi carb with intake. Got that going in next week. I love the videos, keep it up.

[@GhettoWrench]

Thanks. And you're going to love the Taida 171 kit

[@themajordipp6769]

Just bought a big bore kit for my gen 5 when you put yours on could you please do an in depth install video ? There are ones out there I just feel like you do an overall better job at explaining

[@GhettoWrench]

Sure. I have other videos of putting big bore kit in 150 and 50. I think I just cover highlights tho... not entire thing.

[@Slane583]

I think the Nibbi carbs are popular because they're good quality for the money spent, they're not too cheap and they're not too expensive. Plus the red & black ones look nice on your bike when you have the right theme going. I have a 30mm Nibbi PE on my Hawk 250 along with the yellow Nibbi ignition coil. It was running great until I jetted it way too rich a couple of seasons ago. Then last season I bought my scooter and was riding that most of the time so the Hawk was put off to the side out of the way until I had time to get to it. I also had a Nibbi 1/4-turn twist throttle on my Hawk as well with some Pro Taper lock-on grips. But I eventually switched it out for a thumb throttle to help with riding in traffic better since I haven't ridden a clutched bike in years. I took the Hawk off of my bike insurance for this season and it's only going to be the scooter for road riding. It's much more practical in constant stop-and-go driving and does the same speed. The Hawk is going back to being a dirt bike for trail riding so it doesn't need any insurance. :)

[@GhettoWrench]

Cool. Ya I am pretty happy with it. Def has better build quality than the normal Chinese stuff. Pretty much identical to OEM honda XR carbs from back in the day. I would Def buy one of their CR of PWK carbs for something more modern.

[@Slane583]

@@GhettoWrench I'm looking at getting a couple of the 34mm Nibbi flat-slide carbs for my 1980 Honda CX500 when possible. Right now I have too much stuff to focus on and not enough money for all of it.

[@GhettoWrench]

@Slane583 if you don't mind getting a chinese knockoff of a chinese knockoff you can get really cheap carbs on Ali Express. I use them all the time and like them. I got a kehin 36mm for like $26 and the darn thing is real. All says made in Japan etc and legit box. Check out the last Chuck it video I did a few days ago and I show it.

[@Slane583]

@@GhettoWrench I've actually considered trying some on Amazon that had transparent blue fuel bowls that were $35 each but I never got around to buying. I waited too long and now I'm no longer working. So the funds are a bit tight for now. I also need to get my butt in gear and work on my vintage dirt bike to get it going too. I don't have a garage so I'm fighting with spring time weather. All sunny days so far have been dedicated to yard work.

[@Pipeargill]

I've never actually tried a PWK carb, I've been using a cheap PZ19 carb with the "gas bike" adapter and it's been great. Does anyone know the difference between PE and PZ carbs? I couldn't find much in a search

[@Pipeargill]

$12 for the gas bike intake adapter "Carburetor Intake Adapter FIT FOR engine capacity 48cc 49cc 50cc 60cc 66cc 80cc Motorized Bike and PZ22 XR80 motorcycle carburetor"

[@GhettoWrench]

Idk. I actually have a PZ that came on my 212 Ghost mini bike engine. It's a PZ22.

[@BrianHumphries1982]

Informative tutorial brother. You help tremendously. Quick inquiry... Do we have to install electric fuel pump to run the PE19 on a 139qmb?

[@GhettoWrench]

@@BrianHumphries1982 no. Any carb will work with the stock vacuum pump.

[@BrianHumphries1982]

@@GhettoWrench cool. I ordered a nibbi pe19mm an adapter and the manifold. Also a "high performance" exhaust. Ive been stranded due to it not cranking. Lost my job, just turned 42 today. Broke. Everything is a mess. Can't get this thing running and its only a yr old. 4000 miles on it. Used to do 43-45... Its a grom clone, but the minute I had a belt shred its never been the same. Been pouring money in it and can't get it right. I also have a brand new 80cc 2 stroke bicycle that has never started. 0 miles on it. I have to get something running properly... Need a big bore kit. Whats the cheapest one you recommend? Just valves, rockers, cylinder, & piston.... Nothing fancy just need a a few more mph.

[@BrianHumphries1982]

@@GhettoWrench its been a trial by fire. My brother took me off his insurance without telling me and the brakes in my honda gave out. Crashed into somebody at a red light due to it.... Found out I didnt have insurance and got sued for 20 grand so my license got suspended, but I had a class A CDL... Now.. Nothing. 50cc is all I can legally drive. Rain, cold, whatever. I'm going through it brother. I can pretty much tear it down and put it back at this point, but these parts on amazon are trash 90% of the time, and you can never get them tuned properly...

[@GhettoWrench]

@BrianHumphries1982 I would just see what no name brand is on Amazon or eBay. Get a 52mm one which is 88cc

[@GhettoWrench]

@BrianHumphries1982 damn that's rough. You will come out stringer and wiser though like all hard knocks in life.

[@DustySteel]

Why not just tap the one side and use a bigger bolt so you don’t have to use a nut? Maybe the bolt would be too thick?

[@GhettoWrench]

There was barely enough room for the 6mm bolts to stick out on the rubber side. I had to grind a groove in the rubber even for that

[@DustySteel]

@@GhettoWrench I was thinking that right after I commented lol.

[@MRGreen79]

7:59 do you have a link for the cable spacer you used to take up that slack? Thanks!

[@GhettoWrench]

@@MRGreen79 no its was just something laying in the parts drawer that came off the top of another carb

[@jayb5623]

Quick question. I received all my parts today and now I'm about to install the 19mm nibbi carb on my maddog 50cc. What did you do with your auto choke electrical connector? Since the cvk carb has one and the nibbi doesn't, did you just remove it all together?

[@GhettoWrench]

Ya. Disconnect it at the red plug under the seat right side area and just leave the wire hanging off the old CVK.

[@jayb5623]

Ok great. I got a bit worried..lol I just have to install the cable and then I can fire it up and see what happens...

[@seanmayo206]

Hello Sir. Could you pls reply to this an maybe list what is exactly needed to fit the maddog 50 as far as a carb that's not a cvk . . I've got a new black top cvk but it's trash to me. I just got a new harness but something anit right with carb. It has a 72cc piston. Help me out pls.

[@GhettoWrench]

The video shows all the stuff you need. The GY6 intake manifold, the adapter off the nibbi website, the carb and the mikuni style cable about 78" long.

[@jayb5623]

I'm having a bit of trouble dialing in this carb. I started with #98 main jet, #32 pilot jet, 4 on jet needle ran too hot. Changed to #100 main jet spark plug was black but rain a bit better. So I changed the pilot jet to a #30 and this is the best so far. But it will start right up but if I give it throttle it dies until the bike is warmed up then it's fine. Do you think I should move the jet needle from a 4 to a 3 and see if that fixes it?

[@GhettoWrench]

I think the adjustment you need is in that air fuel mixture screw. You can run a pretty wide range of pilot jets because its adjustable with that screw. I ended up putting mine in more (less air) than the "best idle" and it seemed to get rid of that off throttle stumble.

[@jayb5623]

Thank you. I'll keep messing with it and see. I couldn't seem to get it right last time I moved the air mixture screw.

[@jayb5623]

I can't get this to work. No matter how I have the air mixture screw it will still die when I start it and give it throttle until it warms up then I'm good. However I took it for a run and and it doesn't like to go over 30mph at all. It stalled on me at a light so I brought it back home. I don't know where to go from here.

[@jayb5623]

I went back to how it came but went from 4 to 5 needle hight and I believe I'm better now. It's pushing over 30 on the short run I went so I don't know what top speed will be

[@GhettoWrench]

@jayb5623 you could go back and lean everything out to max. Drop the needle, small jets and now you know it's too lean. Work em up 1 step at a time and see if it improves. Keep going richer until improvement stops. Also make extra sure you don't any vacuum leaks

[@scooterarmy]

What app are you running? You have a draggy setup?

[@GhettoWrench]

Called Drag Racer and icon is a DR, but people tell me the app is dead now. The speedo on screen is my gopro GPS.

[@scooterarmy]

@@GhettoWrench thanks, I'll look into drag racer

[@MrQ_Cruz]

Hey brother how are you? hope everything its going well. Im living in Morocco and those adapters are impossible to find here. What can you suggest me to use as adapter? I have gy6. 49cc with 98cc a big bore kit.

[@GhettoWrench]

Woth a 98cc I would just throw a cheap 21mm PWK on there. It will fit. The regular GY6 manifold and work great.

[@MrQ_Cruz]

@@GhettoWrench Great! thanks! the throttle response is so slow and keeps getting stuck closed at top speed. around 45mph.

[@GhettoWrench]

@@MrQ_Cruz have you looked in your carb while moving the twist grip and made sure it is opening and closing all the way with the throttle?

[@MrQ_Cruz]

@@GhettoWrench I will certainly double check. thanks again!

[@jayb5623]

I installed everything and now the bike won't start. Do you have to have an electric fuel pump in order for this to work? It seems as if there is no vacuum pulling gas into the nibbi 19mm carb now. My fuel filter isn't filling up like it should so something is off. I don't know what to do now.

[@jayb5623]

Does the choke need to be on? I have it off but after looking online I found out it has a choke so now I'm thinking I should have turned it on to get the gas to flow better the first time. Is that correct? PS sorry for all the questions. I don't know anyone who has knowledge on these and I'm learning myself based off your videos.

[@GhettoWrench]

Did you hook a vacuum line to the intake manifold?

[@jayb5623]

Yes, I did do that.

[@GhettoWrench]

Ok so first make sure it has the bowl has gas in it. I use electric pump but with vacuum I actually fill it with gas and a syringe via the drain tube. To start it I start it initially off the main Jet and needle with throttle. This is sketchy. Expect a 2000 to 3000 rpm start. Hold those brakes! The bike will take off. I keep it running and start adding big idle knob till I get control of bike by idle knob. It is turned way in. Then I slowly start reducing idle knob and adjusting air fuel mixture in increments so I am a little on the pilot jet and continue until the idle knob is back out and the I am completely running on the pilot jet. It is my fast method to initially tune it. New carb starts are a pain.

[@GhettoWrench]

@jayb5623 the choke is actually an enriching jet and opens another hole to pull fuel from in front of the slide. Put that on also and it will boost the pilot or idle jet. . Read my other reply for starting it. I forgot to say in my other reply you can also loosen that float bowl drain screw and suck gas out of it to help fill the bowl. When gas is in the drain line, close the drain screw and should be enough gas in the bowl to start. The pilot jet sits way higher in the float bowl than the main Jet and if the bowl is not completely full it is difficult. So like in my other reply that is why I use throttle and start initially with throttle and main Jet. Just crack throttle. Not much.

[@insomniasick]

I bought a 125cc pitbike it came with that nibbi pe19 carburetor. I buy a replica mikuni carburetor but havent installed it because i cant get the nibbi carburetor bolts off (they just keep turning), so i was thinking about taking it to a shop to get it swapped but i did more research and found that the nibbi carburetor is better, im wondering if i should change the jetting or just keep it the way it is or would the better option be just to by another nibbi carburetor? I just want my pitbike to go faster/perform its best. Its a kayo td 125cc fun bike

[@GhettoWrench]

@insomniasick Changing the jetting is all up to how it's running. If it runs good it is probably jetted good already.

[@insomniasick]

@@GhettoWrench That makes sense. Tested how fast it would hit awhile back and got 42 mph, it would cut out/bog going full speed at full throttle. recently I messed with the carburetor, and no more bog /hiccups. Does feel faster, I need to test it again. Thanks for responding I appreciate your videos. I'm starting to understand how it all works.

[@GhettoWrench]

@insomniasick was it too rich when bogging? Did you go smaller main or was lean?

[@themadscientizt3493]

Are you using the gy6 150cc intake on the 50cc?

[@GhettoWrench]

Yes. The bolt spacing is the same. I also use a Naraku spacer between the intake and the head. It is not necessary, but does make the holes transition from big to small better.

[@themadscientizt3493]

@@GhettoWrench thx

[@michaelhatala]

Do think the nibbi is the same way on the gen 5

[@GhettoWrench]

I think the nibbi starts being slide in and not flange mount on the 21mm and up. Gen of maddog makes no difference on mounting. All engines are the same.

[@onefamilyundergod9030]

great video!

[@GhettoWrench]

Thanks. I am going to get this bug boar on and tune the Nibbi. After that I will toss the PWK back on and see what is better for the 90cc mode.

[@cookncrack5334]

I GOT A 78JET ON MY CARB MY 50CC IS HITTING 47 NOW ALONG WIT A BUNCH OF OTHER SHIT LOL

[@GhettoWrench]

@@cookncrack5334 That's awesome

[@cookncrack5334]

@@GhettoWrench I have a 2nd ruck i just bought its a gy6 swap but i cant get it to start it just turns over might get a pop or 2 but never comes alive. been going over the check list. but i think i might get a carb like this one but 26mm.

[@GhettoWrench]

@cookncrack5334 I run 28mm carbs on my 150s and they work great. The 26mm will work great also. The intake valve is 27mm so either or is fine.

[@cookncrack5334]

@@GhettoWrench Im at sea level, what main jet would you recommend starting with?

[@GhettoWrench]

@@cookncrack5334 I'm at sea level also. I think I ended up using a 110 on that Nibbi

[@Anna-gm9ib]

🏍🛵🏍🏍🛵🏍🏍🛵🏍