Help please, I do not know what to do.
I used to upgrade my scooter and had the following improvements:
- Unrestricted CDI, unrestricted variator boss;
- 72 cc Naraku Kit:
https://www.racing-planet.de/cylinder-kit-naraku-v2-72cc-for-gy6-kymco-50cc-2v-p-101917-1.html?backcPathco=16&cPath=26_11792;- Malossi Multivar 2000 Variator with 6g rollers;
- Secondary transmission gear up kit 17/49:
https://www.racing-planet.de/secondary-transmission-gear-up-kit-top-racing-18-17-49-for-china-kymco-4-stroke-p-260390-1.html?backcPathco=5&cPath=26_11792;- Main Jet 82.
The scooter was fine, being able to reach up to 75kmh.
However, it pulled up really slow and didn't do much good inside the city.
And, due to the high compression, the kick-start wouldn't work.
So, I installed an 80cc kit from Airsal:
https://www.racing-planet.de/cylinder-kit-airsal-sport-813cc-50mm-for-139qmb-gy6-50cc-kymco-50-4-stroke-p-270391-1.html?backcPathco=16&cPath=26_11792.After this upgrade, the scooter was pulling even slower and the top speed dropped to 65kmh.
Why is that?
I understand this kit has a lower compression.
It is true that now I can kick start the scooter.
After the 80cc kit, I installed a 19 carburetor with 33 pilot jet and 85 main jet:
https://www.racing-planet.de/carburetor-replacement-for-4-stroke-139qmb-qma-p-98831-1.html?backcPathco=16&cPath=26_11792.It was a bit better.
Then, I just went back to the stock secondary gear kit.
Now:
- the scooter pulls a bit better;
- maximum speed is 65 kmh and it revs very high, the scooter actually trembles at maximum speed;
- consumption is 3.8 litres per 100 km (that's 61 mpg).
I wanted to install a sports air filter:
https://www.racing-planet.de/air-filter-air-system-metal-gauze-filter-38mm-straight-version-blue-shield-p-98596-1.html?backcPathco=16&cPath=26_11792.But my mechanic said it won't do any good for a 4 stroke scooter.
Please help, what should I do. I am desperate.
Thanks,
Cristian.
