Scooter Carb Tuning - You Can Do It!

[@victorhawkins3461]

Howdy, Brad...Mr. Mechanically Inept here. Another SUPERB! video from you! I swear, when I watch your vids, I almost believe I'll be able to wrench on my ET-2 when the weather cools off here in the SoCal desert this fall. You are generally ALWAYS on point, as I plan a 70cc Malossi kit with a Wild Lion exhaust. Thanks for what you do for us. It is GREATLY appreciated!

[@scooterstreetau]

Victor, you sound like a wonderful, happy person. Thank you for joining our channel🙌

[@badmanseed8936]

Good teacher, thanks for the knowledge

[@scooterstreetau]

You are welcome, thanks for watching👍

[@soultaker5577]

Very knowledgeable man , good content beautiful info

[@scooterstreetau]

Appreciate it, thank you for your comment🙌

[@tjjohnston7920]

I have zuma pre bug and a bugeye. Both have 70 kits and Polini Cp21s and If I would've seen this video years ago Iy would've saved me so much time. You gave so much knowledge In a small video. Good shit. Love you're videos. I had 2t dirt bikes In the past but these are my first cvt/auto scoots. So different for me as tuning goes. But Finally have them both dialed. Process of elimination. Fix 1 Issue at a time and try not to get overwhelmed. Try not to not you won't get overwhelmed. 😂 But at the end of the day this shit is supposed to be fun don't let nothing take the fun out of It. 🤙

[@scooterstreetau]

Fun and cheap😁, so glad you enjoyed the content, stick around and keep sharing your 2T journey, all the beast.

[@loganhubbard3177]

Wonderful video I watched all of it. Thank you for helping us understand these cards just a little more. I have a question for you. I have a 2008 Yamaha Zuma with the 70s CC kit Yansuni exhaust de restricted, 21mm polini With AirPod top performance clutch kit yellow spring upgraded variator about to do the install, and I was curious if you could give me a good starting point for the Jets and the needle depth.

[@scooterstreetau]

Thank you for comment👍To answer the question we would do as we say in the video start rich and gown down from there.

[@loganhubbard3177]

I was afraid you would say that ha ha ha ha ha. I was just looking for the easy route maybe eliminating a day or two and again thank you so very much for this instructional video. Have a good day.

[@scooterstreetau]

@@loganhubbard3177 😂😁, My crystal ball broke.

[@charlieoscar09]

Excellent video thankyou

[@scooterstreetau]

Glad you enjoyed it and thanks for comment🙌

[@slipslop7156]

Well explained 👍

[@scooterstreetau]

Thank you 😄

[@mofo980]

Excellent video which I needed to see today, so thanks a lot. I just put a Yasuni R on my bike instead of a Sito Plus (Piaggio engine with a 70 cc dr cilinder) and it doesn't ride well in the mid range. Basicly it only rides well full throttle. I'm running a 19 mm imi black racing carb and I'm thinking about changing it for the factory 17.5 mm dellorto which I still have. Do you think that's a good idea or will I lose performance in your opinon? I've got one more question about the idle mixture setting screw; does it need to be screwed all the way in? Because you said that it doesn't need to be tuned, and I did touch it though.

[@scooterstreetau]

Thank you Mofo, Keep tinkering with the 19mm. Main jet and needle. 3/4 to 1 screw out on the mixture screw.

[@landmonkey22]

Good you are back. Do you have this malossi kit in? M.2011754 i cant find the specs on it from malossi😢

[@scooterstreetau]

It is service kit for MHR Fixed Pulley. We can supply👍 send us an email.

[@49684]

Great video, will you do a video like this on CVT tuning please? 🙂💪👊

[@scooterstreetau]

HI Turtle, thank you and that's the plan! Did you see the Variator video?

[@thomdevries7639]

Hi Scooterstreet, I have an Piaggio engine with à stage6 70cc racing mk2 cylinder AC, 28mm carb and yasuni c21 exhaust. I ran it with a pod filter and even without a filter since I didn’t like these filters at all. Reasons for that are: -Way to much dirt and dust came through these pod filters, straight into the carb. -i find it quite hard to tune bottom end rpm with this much air supply, the balance between Lean and rich is way harder to find. -the most important one in my opinion, it makes way to much noise. You can hear the reed valves sucking in fuel way to hard. And on top of that the fuel consumption is beyond normal.(maybe the size of the carb also plays a role in this😅) So my question is: I want to use the original piaggio 50cc 2 stroke Airbox to bring the noise down and supply the engine with clean air, of course with a aftermarket filter in it(Malossi). However since this setup is racing/high rpm its advised to use a pod filter. Is their a way to increase the air supply from the standard airbox that will meet the air flow need of a big 28mm carb?

[@scooterstreetau]

You can introduce the pop stuffers and multiple holes in to the incoming side of the air box. This may require a little tuning down but still will equal heaps of power and fun👍

[@thomdevries7639]

@@scooterstreetau thx for the fast reply, I will definitely try that out. I am struggling with something else, namely the ignition. I am using the stock ignition currently since its convenient in its use.(working lights on the scooter) I know a inner rotor is advised for the optimal ignition curve and therefore optimal performance, however I do not really care about that. But I do care about the max rpm a standard flywheel can handle, since my setup especially with a yas c21 revs very high, beyond 13-14.000, I am curious what your opinion/advise is on this subject. Another option might be lightening the flywheel with a lathe, where i live its quite common to lower the rotational mass of the flywheel by removing material with a lathe.

[@scooterstreetau]

@@thomdevries7639 I would not consider anything other than the Inner Rotor ignition, try for one with lighting coil. We will be creating a video including the light hack late next month.

[@thomdevries7639]

@@scooterstreetau so you would strongly advise to not use a standard non modified flywheel on a race setup. If I understand you correctly

[@scooterstreetau]

@@thomdevries7639 After all of the years I have been doing this..... NO, but I always encourage people to try their ideas, just give it a go as you only learn when you embark on these projects👍

[@Jaxon_chickenjoe9]

have you ever used a wide band O2 sensor kit to tune? is it actually possible to use a wideband o2 sensor kit on a 2T?

[@scooterstreetau]

Yes, it is very god way to tune your scooter, if you have 1 scooter and attach the sensor to a gauge on the dash you can constantly monitor during the ride.

[@razzledazzle6574]

Hello amazing video I know I’m a bit late to the party but I have a piaggio typhoon 2t euro 4 2018, I recently swapped my carb from a 21mm to my original 17.5mm as the bike has a huge loss in power and I can’t figure out why, it’s top speed is 40mph it has a 70cc mallosi cast iron kit, a mallosi sports exhaust, stage 6 oversized variator, 3.5 gram roller weights and harder clutch springs, the main jet I had to install in the 17.5 is a 108 i know it’s very big but it’s the only jet that worked it also has a open pod filter one it’s so frustrating as I can’t figure out why there’s so much loss in power

[@scooterstreetau]

Gday, how are you? See our playlist on the Typhoon to explain the Fuel system for this model. Reduce the POD filter, too much air/fuel for such a small engine.

[@razzledazzle6574]

⁠​⁠@@scooterstreetauhello I’m doing well thanks hope your doing good, which video will it be that explains the fuel system I also see that the ecu is located on the upper body panel on the videos my cdi is located under the panel near my seat sorry if that’s hard to understand im not to sure what everything’s called :-)

[@scooterstreetau]

@@razzledazzle6574 kzbin.info/aero/PLi1jigkxR7eJEdv1PTq2mKyN1de9dtYN9

[@domaszemaitis9059]

I own a aprilia sr 50r 2017, currently in the process of changing my exhaust from stock to leovince tt, what jet would I need to change to? The current jet is stock (58 I think?)

[@scooterstreetau]

We explain all of this in the video.

[@numankralj]

Hi! I just bought a Torque wrench. I have an piaggio zip 2016 2stroke and i dont know how much to tighten (nm) the variator, and the clutch. Thanks in advance!

[@scooterstreetau]

I can't remeber either, was it 32? You will have to check the workshop manual.

[@darkogligorov3181]

Hey im loking to bay a clutch spring and the litle springs on clutch the transmision is all factory so whats betwen rpm to bay to have good start and end?

[@scooterstreetau]

It depends on the set up you have and what delay you require on take off.

[@darkogligorov3181]

@@scooterstreetau its all stock for now so i want to boost it a litl to have good start and end

[@scooterstreetau]

@@darkogligorov3181 Lighter rollers and an adjustable clutch.

[@functional_gaming7188]

hey i got a question. im planing to put a polini sport 70cc kit in my aerox ns50n what crank should i put in with the polini kit?

[@functional_gaming7188]

and is it worth changing my exhaust from an extra to a yasuni r?

[@scooterstreetau]

Use the recommended crank from Polini.

[@scooterstreetau]

Yes.

[@numankralj]

I just finished putting on an leovince tt on my piaggio zip 2stroke 2016 and heres my setup: 65 main jet, (dellorto 17.5 carb) leovince clutch springs, i 3x 5.7gr 3x 7.0gram rollers, malossi air filter. I took out the resctrictor at the cylinder head and my top speed is only 70kmh. What could cause this? Thanks

[@scooterstreetau]

Keep tuning.

[@oscarnygren6478]

…my two cents are that this sounds about right. For higher speed, more power is needed; i.e. a 70cc cylinder. If you prefer low end torque, stick with the 17.5 carb. Go for a bigger carb if wanting more power in the higher rpm’s. I would start with the 17.5 and see what it feels like.

[@sebastians6691]

Do you have any idea why it sound like gravel in a tin when i accelerate? Do you think it could be the crank bearing?

[@scooterstreetau]

Firstly check the muffler can, this noise can appear when the inside of the muffler breaks down. It sounds like a Rain stick when reving.

[@badmanseed8936]

​​@@scooterstreetau ive heard what i think is this a couple of times, its not necessarily a full grinding sound? And maybe only for a second or two? I mean the exhaust is rusty aslo

[@hodniss1889]

Hi, I was wondering if someone could help me get in the ballpark on jets, I have a Piaggio zip 50 2t, stock 50cc, tecnigas q-tre without the restriction, and a naraku phbg 19mm with a 75 main, and 48 pilot, needle is in almost lowest clip. Air/mixture screw is 1,5 turns out, I have only startet it up fast and it fires right up, havet run it warm yet, i also have a polini pod filter, with the cover around. It is Kind of cold right now, about 8 to 4 Celius. I have a 70 to 88 main jet kit, and a spare 60 pilot, what is the ballpark jet I should try first?

[@scooterstreetau]

With a Pod start with 88 main, needle to middle.

[@markolegendary2645]

Get award!! Why my aprilia '98 minarelli poping and dont drive (70cc top perfomance) help

[@scooterstreetau]

Too rich? IDK..

[@frazenin9637]

Hey I have a euro 2 piaggio typhoon 50 with the following installed : Super compression crank shaft Malossi mhr replica 70cc BR9ES plug Yasuni r exhaust without baffles removed yet And a 20.5mm carburetor With a pod filter The carb came with a 82 main jet and it is now 98 and a 50 pilot jet Wich I haven’t changed but it seems quite big, I can’t get it to idle no mater what I do and when it’s hot and I try start it again I have to hold the throttle wide open for it to start, it start after about 4 seconds of cranking but with the throttle wide opened it will just barely stay running and I have to hold it wide open for about 15-20 seconds before it bumps up in rpm enough where it’s isn’t just surging from 1000 rpm to almost stalling I was wondering if you could help me out on how to fix this issue, Also I don’t know where to buy the pilot jet kits from because they are the internal one with the 4 holes drilled in it Thanks heaps for reading this I hope to hear back from you because I’m really in abit of a pickle with this one👍👍

[@scooterstreetau]

Try needle adjustments, does the 20.5 have an auto choke or manual?

[@frazenin9637]

@ it has a auto choke which I replace last Friday because that was my first thought but I the future I will run a manual choke

[@frazenin9637]

@@scooterstreetau do you have anymore suggestions on what main and pilot jet to run and even needle height? Also I’m really struggling to fine any pilot jet kits for the dellorto 20.5 carby because the are the internal main jets not the flat tops ?

[@scooterstreetau]

@@frazenin9637 Follow the video and dont skip steps otherwise it may take months. You need to find rich/lean first.

[@frazenin9637]

@@scooterstreetau where do I get the internal pilot jets from for my delorto 20.5 mm carby You don’t have them list on your website they are the long ones with 4 pin holes drilled it the side of the tube part of the pilot jet ?

[@najdrazi_tatica]

I am not a good english speaker so i need you to expalin me what is "splattering" means,u are meantioning it so much time and i know it is important but i dont know what u think by that 😅

[@scooterstreetau]

Oh ok, when we say the engine is spluttering we mean the engine says blah blah blah, the engine not talking properly. I hope you understand.😁

[@najdrazi_tatica]

@@scooterstreetau oki thx 😁

[@Wild72]

Hello i have a piaggio zip 4t 2022 and I cant find my cdi and I don’t know what cdi to buy that is derestricted would love the help

[@scooterstreetau]

Is the engine number CD- - M? The fueling system is injection, so you will need an ECU. Polini and Malossi make them for EFI models. Watch our ECU video and you will see. kzbin.info/www/bejne/pWXIqaymiq2Jp5I

[@Wild72]

@@scooterstreetau I have just watched that video helping me alot but I am struggling to find my ecu

[@scooterstreetau]

@@Wild72 What is your engine prefix? Then find the suitable ECU. Euro 5 I suggest..?

[@Wild72]

@@scooterstreetau it is CD21M

[@scooterstreetau]

@@Wild72 CD21M is Zip 50 IGET 4T 3V E5 2021-2023. Polini and Malossi make ECU for this model👍