Yasuni Exhaust DE-RESTRICTION - UNLOCK Your Scooter's Power!

[@theo2522]

Great tutorial as always👍

[@scooterstreetau]

Love the support 🙌 thanks.

[@matthewnorris203]

Thank you. Just the video I needed to see. When you bolt the silencer up to the pipe, use HondaBond on that seal.

[@scooterstreetau]

Thank you, 👍👍

[@kirksmith8659]

Would this also need to be done to the Yasuni "Z" exhaust? Thanks again for all you vids. Huge help for my son and I. We just recently purchased a 2006 Derbi Bullet.

[@scooterstreetau]

Yes always check. Thanks for watching and the support we really appreciate.🙌. All the best🦘

[@connorwu1233]

Great tutorial. I've just bought a Malossi Flip sport exhaust for my Piaggio Typhoon 50. Do you know if the restrictions are the same (2 restrictors) or just the 1 in the headerpipe? Thanks

[@scooterstreetau]

Yes check the same restrictions.

[@nastynatesscooters9896]

Gotta love the yasuni r.well made piece of art

[@scooterstreetau]

Completely agree🙌

[@Ice-T.]

Yes it's great, i had that exhaust(i bought it new) on my Runner 50, but i sold it, can run on 50cc, but it's better for 70cc Here in Croatia that exhaust is "holy grail", everyone wants it

[@everythingbro4786]

Yasuni mounting plate is the cheapest one i have seen tho😂

[@emirhan030]

@@everythingbro4786 does it matter though? I wouldnt mind.

[@everythingbro4786]

Well it rusts very quickly

[@tinozedd8528]

yeah keep those videos coming. I'm up in Woodford and rock a 2005 Peugeot Ludix Blaster LC with a LeoVinceZX and a 21mm Dellorto. Badly tuned but goes and is obnoxiously loud and makes people laugh lol

[@scooterstreetau]

Great little scoot the Blaster LC, loads of power in them.. Loud is safe, they can hear you coming.😂

[@Lillemand3112]

Thank You it help My scooter is Way to fast now 🎉🎉

[@scooterstreetau]

Great🛵🛵🚀🚀

[@itsroads206]

Just curious, what’s the difference if you leave them in vs when you take them out?

[@kommandant.357]

performance increase

[@itsroads206]

@@kommandant.357 Can you elaborate more?

[@kommandant.357]

@@itsroads206 In the EU we have restrictions on speed for 50CC bikes We cant go faster than 45 to 55kmh (depending on the country) and that means that scooters are restricted with a combination of or a ring in the variator gearbox (CVT), a metal stud like this in the exhaust muffler and beginning and a restricted air intake. So if an exhaust is sold for 50cc bikes it needs to be restricted. Hope that helps!

[@kommandant.357]

Also means that the ring only blocks speed and not acceleration, stuff like restricting airflow through exhausts and air intakes will also ruin acceleration and such

[@EinarLerschen]

What kind of setup would you recommend for a stock piaggio variator with this pipe? How about mainjet? Does the clutch springs or torque spring need to be changed?

[@scooterstreetau]

I would use the YasuniZ, between 58-68 mainjet, Adjustable Polini clutch, 6.1-6.5gram rollers.

[@davidm6975]

Is there a video on changing clutch springs and rollers

[@waninio7863]

Good shit mate very understandable

[@scooterstreetau]

Thanks Bro🙌

[@robertoramos3131]

Nose mucho inglés podrías explicar que es lo que le quitaste al principio ese pequeño tubito

[@scooterstreetau]

El tubo es una restricción al flujo de aire, retírelo para permitir más flujo y mayor potencia.

[@leonardocarraro1559]

My savior!!!

[@scooterstreetau]

Hallelujah Brother😆

[@numankralj]

I was wondering what if i just take the rescrictor out the one at the cylinder head? What the difference if i take both out vs only the one at the cylinder head and which tools are best because i dont have these that you used.

[@scooterstreetau]

The best way is too try it and find out, believe me from experince when both are removed the result is 100%

[@ItzJoJoOnYT]

Would this pipe work for a tbg 303r hawk 50cc and what pipe I should get if not

[@scooterstreetau]

No, You need the exhaust which is manufactured to fit the TGB 50cc engine. You may find them on our website under the TGB 50cc category.

[@dalefehring9537]

Which combo is best for piaggio hyper 2 2T , stage 6 50cc street race cylinder kit with Yasuni Z exhaust or Malossi 70cc sport cyclinder with Malossi wild lion exhaust ?

[@scooterstreetau]

Stage6 50 is less power then 70cc. Yasuni is much better performance than Wild Lion. Stage6 50 if laws bind. Wild Lion if you want the conservative look.

[@marcvanderdeure5386]

Does destricting the silencer do anything to the performance or is that just sound

[@scooterstreetau]

Yes it Derestricts the exhaust. if you want the scooter restricted in power leave it as a standard scooter. If you want more power,derstrict all restrictions including exhaust.

[@aleksarasljic7462]

I want to get a 70cc malossi kit ( its the 926 kit , cast iron cylinder ) for my 2011 piaggio zip , i have a yasuni r exhaust , a polini hi-speed vario 6.3 g roller weights , would the stock 17.5 dellorto be enough for the setup and what jet size should i go for , also should i get lighter rollers and maybe change the clutch springs and a contra spring?

[@scooterstreetau]

Sounds great so far, yes the carby be ok to start out but the carby can be upgraded when you upgrade the cylinder class. Jetting. Always start rich. I would use heavier rollers if required.

[@viestursducens2282]

So the thigs that you took out you just throw them out and that gives you extra power ?

[@scooterstreetau]

Don't throw them out use them as key rings. Yes extra power. It is like blowing thoough a straw full of rice, clear out the rice and then the air flow become unimpeded and flows quicker.

[@jbsvault]

Hi there. I have a question about an exhaust, of which I cannot find anything on the web relating to my desired answer. I have a Minarelli Horziontal (YQ50 block) with a Yasuni City 16 (bought second hand), have been running it for years. And no, not with stock engine :). It seems there is a sealing ring in the pipe itself (engine side, pre-expansion), sealing or clamping the exhaust port flange. I cannot find any good references for that part online. Do you have an idea about this part? Is it a regular silicone o-ring? Or a deformable metal seal ring? As it feels like a soft metal, but perhaps because it was a silicone o-ring that has carbonised by now. Asking because I think its leaking there, exhaust seems louder and I've excluded all other options. It's not the silencer. Thanks in advance!

[@scooterstreetau]

@@jbsvault I checked the parts diagram and there is a O-ring Ø28 x 2.5mm.

[@jbsvault]

@@scooterstreetau ...Did you remove my reply with the 28 x 2.5mm information? Anyway, PSA: if someone needs to replace this O-ring or any other, like in the silencer for example, be aware to pick a material that is suited for the operational conditions. NBR, silicone or EPDM will likely not work (for long) due to their chemical or thermal incompatibilities. After some searching on operational conditions and characteristics (hardness, high thermals, exhaust fumes, petrochemicals such as oils and petrol, etc.) and general availability, I ended up with an FKM O-ring. Found an 80 shore A 28x2,5mm one from Viton for about 4 EUR, but there are probably other manufacturers as well. The flange fits snugly now and there appears to be no leakage. Haven't received any reply from Yasuni yet... But that doesn't matter anymore now.

[@scooterstreetau]

@@jbsvault Yes I edited the thread so any others reading get the measurements straight up, see above. Just want to say thank you for following up, it will definitely help others with the same issue🙌🍻

[@vonix3843]

hello, i ordered yasuni r, multivar 2000, malossi x kevlar belt and im going to try some 5.3g rollers. do you think yasuni r is too open for stock 50cc?

[@vonix3843]

i have a gilera runner 2012

[@scooterstreetau]

R is good for water cooled engine and better again for 70cc kit.

[@refloxz7142]

Does removing the restrictions improve the overall sound of the exhaust?

[@scooterstreetau]

That is personal preference, It does improve the sound for me, give the exhaust that cracking 2 stroke sound.

[@blade663]

tell me is there any exhausts better than the yasuni r(boost more kph) around the 150-200 euro price range. And my second question is my planning to buy a stage 6 air filter the one thats like a rectangle a stage 6 belt, stage 6 variatior rolls and a yasuni r with all those mods how much kph would i expect and is there anything from stage 6 that will boost my kph thats not one of the mods i mentioned above and is around 50 euro? Btw my scooter is a 50cc and it goes 80kph

[@scooterstreetau]

You are best to buy an exhaust that matches your cylinder.. What Scooter?

[@blade663]

@@scooterstreetau sorry for late reply gilera runner sp50 full stock

[@scooterstreetau]

Yasuni R🎉🎉@@blade663

[@k4cperz_333]

Hi, do you guys have any Yamaha neos, and would you recommend it for tuning?

[@scooterstreetau]

Hi there, Neos has the same cylinder as the Jog. Check the small end bearing 10mm or 12mm. All of the usual parts for the 2 stroke. Cylinder, exhaust and transmission, carby if the budget allows..

[@theleoto2691]

hello,i have yasuni r malossi delta cluch 4.3 rollers white spring malossi special belt malossi red air filter in box on aprilia sr 50R 2005 what jet should i get?

[@scooterstreetau]

Always start with a rich jet and slowly move down 1 size at a time until you have a clean burning carby.

[@justingauthier1788]

Good afternoon my son has a r after doing this does he have to rejet the carb ? Thanks great video

[@scooterstreetau]

Thanks JG👍 It is good practice to jet up, the out flow will be greater and it is a good idea to up the jet. In saying that your set up will dictate whether more fuel is required, I would also look into the rollers and clutch too.

[@justingauthier1788]

@@scooterstreetau thank you for your time much appreciated :)

[@MrZarnach]

Quick question, mate. Gilera Runner 50, old shape, with Malossi Sport 70cc, will get 19mm or 21mm dellorto carb. Which exhaust would you put on it? Yasuni Z/R? Currently on Leovince ZX, but it's dirty as hell and I have no way to clean it, could use something better. Crank, transmission etc are changed to at least street level.

[@scooterstreetau]

The "R". In the meantime, remove the ZX and using sanding block/paper rub it back and clean it up, repack the silencer and replace the nuts. The final step is using Heat Proof Paint (can spray) give it a couple of light coats. While the pipe is drying wash and degrease the silencer and the end pipe. Will look new again. Careful to fit it on to the engine and when the exhaust gets hot the paint will set. Will look great👍🎅

[@MrZarnach]

@@scooterstreetau oh, that's not what I meant. It's been fitted on the bike since it had 2k km, and now it has almost 20k. It's seriously clogged up inside with oil/carbon deposits, and pipes inner diameter are quite a bit smaller. Call it natural restriction, lol. Tried cleaning it with drain cleaner and hot water, but amount of dangerous waste was too high to do it more than once, and it didn't really help. Current vmax is about the same I had on stock, ~85 km/h.

[@scooterstreetau]

@@MrZarnach 😂😂, ok dirty inside. Only way is to burn it out, so yes time to change it. "R"

[@MrZarnach]

@@scooterstreetau jeez, there is no end to this bike! Put Dellorto 19mm on it, and it looks like when main jet starts, it bogs down for a second and then works more or less normally. Does this sound like too big main jet? I honestly have no clue. Also when you put on a bigger carb, should you downjet from the one you had before? Remember seeing something like that on the forums. I'm trying to learn tuning 2 strokes on that bike, but I'm getting more and more confused.

[@scooterstreetau]

@@MrZarnach A larger carby will generally require a smaller jet then the carby it replaced. You need to start the whole tuning process again, so start rich until the splutter clears, tune only when off the choke in an Auto choke. On the Dell 19 the needle will need to be changed and the pilot jets to as they are more sensitive than the stock carb. If manual choke you can cheat tune by lifting the lever.

[@atsarmstrong]

Hi i just bought the yasuni z, didnt remove the restrictors because i thought that it would still be better than my stock one (like 70kmh) but now the scooter runs at like 40kmh and i have no idea what the problem is. is it the restrictors,jet or anything else? the scooter is aprilia sr50

[@scooterstreetau]

I don't understand why you leave the restrictor in place? The restriction restricts the power. This is why we make this video. You must tune all parts of the engine to suit a new exhaust otherwise low engine power will result.

[@cliveswabs9365]

Stupidity beyond all comprehension ​@@scooterstreetau

[@RobertMorrey-fp7fb]

Is the restriction on a standard exhaust as well or not

[@scooterstreetau]

Yes very retricted that is why the scooters are so slow. Watch some of our videso and you will see where retrictions are, this is why people fit the performance exhaust.

[@blade663]

I have a gilera runner and stock it goes 80kph how faster will it go after i install a yasuni r with no restrictors?

[@scooterstreetau]

You would expect around the 88kph.

[@blade663]

@@scooterstreetau tell me is there any exhausts better than the yasuni r(boost more kph) around the 150-200 euro price range. And my second question is my planning to buy a stage 6 air filter the one thats like a rectangle a stage 6 belt, stage 6 variatior rolls and a yasuni r with all those mods how much kph would i expect and is there anything from stage 6 that will boost my kph thats not one of the mods i mentioned above and is around 50 euro?

[@scooterstreetau]

It really depends on the type of engine and the cylinder. Save and buy the 70cc kit, it will be the best value upgrade.@@blade663

[@blade663]

@@scooterstreetau yes i think thats the best option to buy a 70cc kit and a exhaust then do small upgrades later on. Bte can u tell me the best value 70cc cylinder from either stage 6 or malossi. And also when i get a 70cc kit would the stock parts be able to handle the 70cc cylinder

[@scooterstreetau]

Stage 6 is good value and performance, Malossi is good reliability.@@blade663

[@emmanuelalipio4906]

Does yasuni exhaust comes with a bracket?

[@scooterstreetau]

Hello, yes it comes with all of the parts in the video. See at 3:33

[@Betinator69]

Was it hard to put everything back in the stinger?

[@scooterstreetau]

No, it slides back in to place easily.

[@eliasogoskar2686]

Can i ask what the metal tool you are using is called?

[@scooterstreetau]

at 2:49 you will see us use a DREMEL, brilliant tool for fine work.

[@theo2522]

Hi guys, this will be quite long but I would appreciate some help😁. I have a sr 50r mhr rep yasuni r some variator stuff and stock air box. After installing the 70cc I realized that when driving in the rain the moped start sputtering on high rpm and after a few minutes driving it finally just turns off. When I looked the air filter was full of water. I just waited let it be and it started the next morning. But a few weeks later I got caught in the rain again and the same thing happened but this time the moped was hard to start(The day after). When I got it started it revd fine and the back wheel spins like normal up until 6k rpm I’m guessing, while on the stand. Then the rpm drops quickly then goes back up in span of 0,5 second. And I let go of the gas because I don’t want to be brake anything. With both wheels on the ground the bike won’t move forward just does a small hope. This was a couple weeks ago but the problem remains. Have you guys experienced the same problem or at least have an idea if what could be wrong? It would really help, thanks in advance.😁

[@scooterstreetau]

I don't understand why water is getting into the airbox, look into the air intake, as you may have to redirect it. If you ever get water in the engine it must be cleaned and dried out ASAP, this is urgent and important so clean the intake to carby to reeds.

[@theo2522]

@@scooterstreetau The water only became a problem after I installed the 70cc so I guess it just sucks so much air that some water in. I can’t se any other way because I have done anything to the air box. Can you specify more on the cleaning/ drying part? Because I feel like all the water would have evaporated now because I have started and it’s been a few weeks, and what is there to clean?

[@scooterstreetau]

@@theo2522 Or if you are riding through deeper puddles. Remove the air box and clean the inside and check the air filter as water will sit in the filter. Clear the carby, remove bowl ad dry everything, make sure jets are clear as water restricts the fuel. If you dont clear the water internal parts can damage prematurely.

[@theo2522]

@@scooterstreetau what part could have broken? And in what way, rust? Because it has been standing still now for some time so I fear this may have happened. Also do you have any ide of where the problem could be, from the symptoms mentioned I the fist comment. Also I would like to thank you for the fast response and help much love.

[@scooterstreetau]

@@theo2522 Start the checks and you will see.

[@repsajjjjj]

does the yasuni R fit on an zip 1997? please let me know

[@scooterstreetau]

The website says yes, it does have a fitment for the Pre 2000 ZIP, YAS420.

[@repsajjjjj]

@@scooterstreetau alright thank you!

[@suzukigsxr8856]

Yasuni r main jet dellorto 17.5 , roller and spring aprilia sr 50r 50cc?

[@scooterstreetau]

Jet approx. 70-62. roller to 6.8-7.4g. Spring tension minimum 3000rpm.

[@danielgodin852]

Does this make the exhaust louder ?

[@scooterstreetau]

It allows the exhaust to pass air faster and this allows the rpm to increase, when the rpm increases it produces more noise.

[@Kinamoto]

How much top speed will you gain?

[@scooterstreetau]

15+

[@Kinamoto]

@@scooterstreetau Ohh nice

[@scooterstreetau]

@@Kinamoto the engine must be tuned to suit the additions you install.

[@Kinamoto]

@@scooterstreetau Okay this is my Setup: Malossi 70cc Sport Technigas Q-TRE Exhaust (with the restrictor in it) Dellorto PHVA 17,5 Carburetor A mix with weights 3x 5G and 3x 6,5G Malossi Delta MHR Clutch Red Malossi Clutch Springs Blue Jasil Pressure Spring (30%) Original CDI 😦 My top speed is 73kmh How much do you think I Will Gain if I remove the restrictor?

[@scooterstreetau]

@@Kinamoto I cant believe anyone would buy an exhaust and not derestrict it. I don't understand?

[@Miro-18658]

Can i take the wool off?

[@scooterstreetau]

Yes, but the wool muffles the noise.

[@Miro-18658]

@@scooterstreetau how much noisyer it is without the wool

[@scooterstreetau]

@@Miro-18658 Take off the silencer and start the engine, this is pretty much be what you get. Make sure you have plans to move out of your house, the neighbours😂

[@Ivan-wp1cs]

why do you need to take those parts out?

[@scooterstreetau]

Did you watch the video? Too get more power out of the exhaust these items need to be removed.

[@everythingbro4786]

Do giannelii exhaust’s also have restrictions?

[@JDMz]

Yes. Only at the neck.

[@everythingbro4786]

Where muffler connect’s or pipe to cylinder?

[@scooterstreetau]

Yes, when we used them we had restrictors in the head pipe. I cannot remember if in the silencer but a quick check is easy.

[@everythingbro4786]

I did check where muffler connects, and there’s no restrictions there, atleast not on extra v2.

[@scooterstreetau]

@@everythingbro4786 Too easy👍

[@Octavian17]

I have a 2020 Aprilia Sr 50 and i run a Leovince tt on it with stock springs and contra spring. Should i go for a malossi fly clutch with white springs or yellow springs and a purple contra spring? or is the purple spring to stiff for a 50cc?

[@scooterstreetau]

I would go for an adjustable Polini G3 clutch shoe. The Contra spring will depend on the roller weights and the ability the engine has to build rpm. The spring is needed to assist lowering of the gear when off the throttle.

[@Octavian17]

@@scooterstreetau I have 6,5g rollers and i am using the 50cc with leo pipe and multivar variator, could this handle yellow clutch springs and purple contra?

[@scooterstreetau]

@@Octavian17 Give it a try and you will see the results.

[@Octavian17]

@@scooterstreetau should i use the 6,5g rollers for the purple contra spring or o should use lighter rollers?

[@scooterstreetau]

@@Octavian17 You need to give it a try and you will see the results. How can you learn if you don't try?