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  #1  
Old 09-08-2016, 11:37 PM
fan4chevy fan4chevy is offline
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Default NCY 62mm Cylinder Which Head Size?

Hi,

So I am considering the NCY 62mm for my gy6 150cc. I am also considering a 2-3mm stroker.

The question is that NCY only makes a 61mm and a 63mm head. I am wanting the best performance and wondering which head would be best for the 62mm cylinder.

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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  #2  
Old 09-10-2016, 12:33 PM
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SYCARMS SYCARMS is offline
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Default

I always get the 58.5 chamber head for more compression ratio
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  #3  
Old 09-10-2016, 01:47 PM
fan4chevy fan4chevy is offline
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Sycarms,

Have a 62mm NCY ceramic Cyl on its way.

So you fit a 58.5 on the 62mm?

What about a 61mm on the 62mm cylinder?

Are the valves big enough to create performance with this big of bore?
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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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