CVK stands for Constant Vacuum Kiehin. 24mm is the correct stock size carb. 30mm DO NOT improve the performance of stock unmodified gy6 157/152/1p57 as they are too large. A 30mm FLAT-SLIDE carb is for a gy6 with engine mods, such as a significant BBK.
The cheapest and easiest way to get optimum carb performance is with a an open-element air filter and a larger main jet ( #110 to #125 for UNMODIFIED gy6 152/157/1p57) the 24mm is more than large enough for a stock engine.
__________________
2011 Roketa MC-23-150
4T 150cc 157 qmj
24mm carb w 115 main jet and paper cone air filter
Manual petcock w Tygon fuel lines
Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust
RED spring clutch
Adjustable CDI (brand unknown, it's blue and red and works great!)
KOSO high performance variator w 12g sliders
Gates Powerlink 835-20-30 belt
GPS verified 65mph on flats.
|