In my opinion for the smoking is to buy a non bore in cylinder and head kit. 61mm typically bolts right in.
This will give you new power due to compression, clean running and keep the carbon from building up on the valves.
Before I tore my engine apart, it was also lacking power and smoking. I knew it was lacking power because I have two buggies and this one was noticeably slower. Also harder to start.
After tear down, I could see so much hard deposits on the valves. Probably added a little compression but man it looked terrible due to the oil burning.
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Buggy 1
150cc Buggy
A12 Cam, 12g Sliders, Ban Jing Bell, NCY Green Clutch, 24mm Carb, 115mm Koso variator ramp, redneck intake, uni filter, straight through exhaust.
Guang Max 150
All stock but to be like Buggy 1 with all koso cvt.
Roketa 150
Complete tear down building port/polished 61mm NCY head, 62mm cylinder, A12 Cam, 28mm carb, straight through exhaust, 8 pole stator, possibly 2.5 stroker, painting frame, adding plastic including doors and rzr seats.
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