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| 150cc GY6 and Under Engine Tech GY6 and Smaller Technical Discussion Forum |
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#1
09-18-2016, 06:53 AM
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62mm GY6 Big Bore Installation Boring Size
I am putting in 62mm NCY big bore kit and getting ready to bore for it. I noticed that the stock set up has some skirt clearance of like atleast 1/16" and it appears that ********** recommends : "62mm Kit (175cc) – Machine cases to 65.15mm ± 0.075" which also leaves a similar gap.
Is buggy depot correct? Any advice is appreciated. Charles
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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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