If I can pull equal to more power out of a gy6 150 A block with 62mm bore and up to a 3mm stroker or perhaps a gy6 b bored and stroked which can be done up to 232 than I would certainly go this route. Using Taida parts.
However, if the money being spent is not going to perform against a modded 250 that has water cooling, it seems it would be good money being thrown at a lost cause with the 150 gy6, especially still being air cooled.
I do understand that bigger is not always better. I have a 327 engine and it can keep right up with a 396 or 454 chevy.
Another thing I am wondering is that a cf250 has a huge variator ramp and clutch ramp vs the gy6 115mm ramp. This alone seems that you would not be as limited on speed and would be able to go much faster top speed. Is this correct?
I have found performance being made for the cf250:
http://www.scrappydogscooters.com/25...rformance.html
Big Bore:
https://chinesescooterparts.com/prod...-cylinder-kit/
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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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