Added: 5 years ago
From: ScarpRS
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  • check out my vid ill tell you what parts are best to make 4 stroke scooters faster !

  • Buy

  • What do i but to tune it how much will it cost

  • Is it nesisery to have engine cover , that black thing that you have on your engine, it's for cooling ?

  • does the air filter make much differance my mate put one on his and said it made alot more noise but no more power

  • Nice tunning.

  • were are you from im from serbia if you from serbia pls give me your facebook to i ask you something about scooter i have scooter like thet end air filter like thet

  • asan ang tuning jan?dapat hindi tuning title mo!

  • I'm new to scooters getting one soon so this is not a stupid question.What is scooter tuning exactly? Is is another term for customising it like you would a car? thanks

  • I've just replaced such carburettor with a 15 mm from the bavarian manufacturer BING. I was getting real tired of start problems and problems when driving. It works fine and gave me better performance on hills. It even makes the engine rev way beyond the limiter when the scooter is on the stand :)

  • i got a puch maxi k, and i was wondering if you can add a powerfilter without adjusting the carb?

  • what jet you got for that free flow air filter. also with your exhaust did you get the restrictions out there is 2 or 3 in these bik. coz i took my exhuast off and got 45 mph up hill and normally only get 30mph so me and my m8 took my whole exhaust apart and found 2 resrtictions. Also the little tube inside the exhaust i took out so its louder.

  • I hate it how gay 4 stroke mopeds sound... everytime i hear one i expect a nice young lady to come aroudn the corner while its some douchbag with his boyfriend

  • @strikeback7 Well if you dont like 4stroke you can just buy a 2stroke engine.The difrences are that the 2 stroke consumes more fuel makes a farty sound , leaves a lot of smoke and you also have to change a lot of parts beacouse this type of engine wears out faster than the 4 stroke.

  • A "power filter"? What the hell is that? Has a company conned you with a shiny air filter and used words like "power" "sport" etc? Filters CLEAN AIR, they do not restrict airflow. Companies have given up on boy racers with cars as they are not easily fooled, so they go for young motorbike riders now knowing they will pay anything for power. What you have done is decreased performance. I suggest you LEARN about engines and filtration, also gasflow and exhaust systems. Stop being conned!

  • @urbex2007 ..dude..STFU!!! good god..why the fuck do u care u fucktard

  • That scooter kinda sounds like shit, plus look at how much free play you have on your throttle cable, Only about the last 3/4ths of a turn are actually tensioning the cable.

  • kymco super 8??

  • motor made in china;) "tuning" filter too:)), take a polini, mallosi, top or europerformance;) then you feel the diference

  • my 4 stroke is running 70km/t about 40Mph.... :D

    just removed the little ring :p cant remember the name for it .... ;)

  • your jetting isnt right,

  • hey can someone help me, i have a 110cc pocket bike right now it goes 25-30 can someone tell me how to tune it to make it go full speed, thnks

  • @Bwest36cover4mad09 25-30 mile/h or km/h? and its transmission probably restricted. I have 135cc yamaha scooter and it can go 120 km/h max. but here in thailand local scooter garages can make 110cc scooter very fast and scary.

  • Интересно что означает power filter?.. ))) И еще что-то? Тюненх сцепы...

    И скока жрёт, скока прёт? Валит со светофора?

  • so if you got a powerfilter your scooter is "tuned"?! it doesnt even give you more power, just an other sound. like building a other exhaust on a 50cc 4 stroke. that won't help with a 50cc you need at least 75cc to get more power out of your engine. if people call this tuning almost everybody is a tuner. (sorry for bad english btw)

  • it work a powerfilter on 2-stroke?

  • it should help a hell of alot, but (im not 100% on this) please tell me you changed the standard exhaut, because i had problems when i did this to my 4 stroke (baotain tanco 50cc) and it lowers your overall power :S

  • just buy a 2stroke

  • Pretty good for a chinese motor,dont rev it to much or go boom boom!!

  • Yeah, I did a main crank bearing from revving mine until it was past the 10000 RPM mark and hanging around in space, and it was stock, it overrevved because the transmission was not delimited but engine was.... Until I found out you can put a (wider) Honda Today 50 belt in it and achieve 80Km/H with stock delimited engine :D

  • misleading title for your video...I thought u were actually going to instruct us on something usefull...thanks for wasting our time.

  • Comment removed

  • it givs effect on biger cc and 50cc

  • What's the use for a powerfilter on a 4T? Doesn't it actually slow performance, and suck in dirt and dead bugs, etc.

  • 4 strokes have more useable capacity than 2 strokes, considering that the overall displacement rating of the 2 stroke includes the lower part of the cylinder where the holes are, so effectively a 50cc 2 stroke is only using something like around 25-30cc's of its cylinder. 4strokes utilises all of its displacement as for why 4 strokes have more torque. 2 strokes have more BHP because they are naturally supercharged further assisted by the suck and pushback of the resonator chamber.

  • Does that rectify the difference between 2 strokes and 4 strokes? I am not totally against 2T's by the way, they have their uses.

  • bringt der sportluffi aufm 4 takt überhaupt was brauchst auch ne greößere düse und die ventile anders einsdtellen

  • actually just to let all you lot know 2-strokes have more bhp and 4-strokes have more torque soooo ha

  • Yeah I used to use a 2 stroke Hot 50 to do Pizza deliveries until it wore out, now bought a QMB139 based scoot, same engine as video except mine is still stock, and I find that after doing a decent run-in, the overall top speed is the same as my old scoot. 2 strokes are fun and zippy, but only fun and zippy, on the othr hand 4 strokes r those kind of engines that you can either have a nice relaxing cruise along the beach esplanade, or open the throttle and GO FOR IT!!!! Im over throttle pumping!

  • WOW an open filter 0.000005hp maybe..

  • 4T has more power, can tune higher with more reliability.

    My leo hit 80mph easy enough when it was 125.

    Shows how much you know kid. :D

  • I need this custom heck! Where did you find it! Please tell me!

  • dumbass,4 stroke has more power

  • uv added a K&N U FUKKIN GENIOUS

  • ah meno male che qualcuno lo ha spiegato non ci avevo capito na sega di che modello fosse

  • garelli ciclone

    uhauhahuahu

  • is it keihin carburetor? coz it look my yamaha mio`s carburetor.

  • It's a Walbro, which is a copy of a Keihlin. The engine is a copy of a Honda Elite engine from the 1980ies.

  • china müll^^

  • Hey mate i have a 4 stroke, i want to ask some questions, can a 50cc 4 stroke be de-restricted and can you get sports exhausts for them?

  • You can get an 80cc kit which will give you 50-55mph and a huge increase in acceleration. If you type in qmb139 80cc you should find lots of them.  You should be able to smoke your m8s Aprilia etc. As long as they haven't tuned theirs'.

  • you will never smoke any italian 2 stroke on a chinky 4 stroke!!! my chinky 150cc 4 stroke cant even touch a italian 50cc 2 stroke!

  • Did you miss "as long as they haven't tuned theirs"? an 80 tuned 4T will smoke a 50 still restricted 2T. Now if the 2T is derestricted then it will smoke even an 80cc tuned 4T & if it is tuned it will smoke a 150 A derestricted but not tuned Italian 2T will do about 50-55mph. Tuned it will do 60-80mph depending on how much tuning you did.  A 150

    4T will do about 55-60. So the 4 stroke 80 beats the 4 stroke if the 2T 50 is not tuned and about the same when the 2 t is just derestricted.

  • I just derestricted an Aprilia Mojito (Habana)

    it does 52mph (just over 80kph) and it can't even get close to my 150cc Chinky, which does 80mph with a little tuning (no big bore or anything.) A tuned, QMB139 with 80cc will smoke that Aprilia I just derestricted. Remember I didn't tune it I just derestricted it.

  • You will never get a true 80mph from a 150 chinky my friend, if you're looking at the stock speedo maybe (they always WAY overead) Even MRPs 200cc GY6 project scoot with ALL the tuning bits on just about topped 80mph, and that was only just!

  • I used my Garmin GPS to determine the top speed my friend. I tune scooters for a living. I have got over 80mph out of street legal aprilia SR50, over 100mph out of an aprilia RS50, 73mph out of a Zuma, 55mph out of a Shanghai Shenke qmb139 and a over 80 out of a SUNL 150cc. I do simple derestriction that range from 45mph to about 55mph and tuning using big bore kits etc. The bikes mentioned are just examples of what I have done. I have a couple of videos posted, including an 80mph Puch moped.

  • @ChazEverest how did you d restrict it please tell

  • i hawe a guestion too :D where can i find 80cc for 4 stroke?

  • On the internet :S:S

    Dumbass !!

  • i can't find! :S

  • scooter-assassins . com, they sell lots of tuning products

  • for some of them you can get an axhaust but for 139 Q?B engines very hardly I choosed to len my exhaust get remade by one company in slovakia

  • @pEng860661 Yeah , TECNIGAS have just 1 sport exhaust for 4 stroke scooters ( TECNIGAS NEXT R ) Specialy maded for 4 stroke ... Naraku , aaand LEOVINCE L HANDMADE for 4 stroke , that's all.

  • The biggest problem of these chinese scooters is the belt the original one is low quality and it slips when it heats so I bought a kevlar one and that increased the max speed. You know this is a 4 stroke engine you dont increase the max speed by a cilinder you just add power in 2 strokes you increase the speed because of the increase of RPM

  • Most of the time the 50cc ones can not get near their max revs, because they lack the power to do so. Whn you convert to 80cc they hit max revs much more easily. Also change the carb for a regular slide carb like on a XR70-110cc and you will get more revs.

  • Sounds quite good then, can't you get a gear-up kit for it at all? i know most of the tuning brands make them for the 2 stroke scoots.

  • Thats true it is very difficult to find some tuning parts for that engine I order them from Germany or from my driend from Stage 6 if you want to ask more things write me on my icq > 223-581-523

  • No it is very dificult to find some part I order them from germany but they only make some things

  • @cdsmith1990 yea you can get a gear up kit from Naraku Performance, they do all the usual stuff as well like main jets, race big bore kits as well as racing pistons, race cdi and race variators. you can also change the acceleration characteristics by changing the gear plate for a dogleg angle you can get most of this on Scooterassassins and ebay. these scoots have abit of go in em once there sorted out.

    safe riding

  • 2 stroke FTW, theres no point in 4 stroke scooters, you need double the cylinder capacity to even put out as much power a 2 smoke. 70cc 2t vs 125cc 4t - dead even.

    P.S. sticking an air filter on the bike doesnt make it tuned...

  • In some part you are right and to the second part sticking a sport filter doesnt make a bike tunned but putting a 80 ccm high performance cilinder putting a racing air cooler putting a higher air/fuel jet  an other manz things that are hard to translate that makes it tunned ;}

  • True. what bike is it on and what kind of speed are you seeing out of it?

  • It is a 4Stroke motor 139 QMB the speed is about 70 - 75 km/h it wont go faster because of the gear between

    the clutch and the vario but for example the 50ccm motor accelarates to maximum speed in 600 m an the 80 cc in 250 and in the near future i am planing to buz a 19 mm carburator so it will increase the power for another 20 percent .

  • True to an extent. Just because a 2 strokes has twice as many power strokes as a 4 stroke does not make it twice as powerful. The volumetric efficiency of a 2 stroke is not as good as a 4 stroke, so although you would think a 2 stroke produces twice as much power for a given capacity, it actually produces about 70% more power not 100% more. Still even that is pretty damn impressive.

  • yeah but 2 strokes sound HORRIBLE

  • My Honda C50 (4-stroke) has got 70cc cilinder and a 90 cc head. it's top speed is 90 KM/H !

    It also has a very nice sound

  • Duude =D i got an 72CC kit for my 4Stroke (4t) , i know 100% how to change it and stuff BUT! im not sure about the chain

    in the engine.. Does i need to change it to a stronger one? or i can keep the orginal and just place in the 72cc like normal?

  • depends if your bore is longer... get a new one anyway

  • normal one is good but when used 80 cc needed to change.

  • well that was reving a 4st not tuning

  • I gotta yamaha cygnus 125 engine, want to sell it and get a BWS 100 and tune it up.

  • sounds gd, what bike is that, what jet did you use.

  • It is written higher

  • oink, oink,,,,,putt putt putt putt oink oink

  • Ihave one of those on my jinlun fighter does about 70 75 km/h

  • damn that sounds so nice, just a few questions what size jet did u use? and how much turns did u do for air/fuel mixture>? how did u know it was the right jet?

  • You should have heard it in 8000 RPM very nice sound jet should be 88 or 90 and air/fule it depends but in these conditions between 2,5 - 3 turns and the filter size i dont know look in E-shops but a good filter is Malossi E5

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