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  1. #1 Rings too small 
    C-Moto Noob
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    Ordered new cylinder, piston, and rings for a 200 cc chinese engine Lifan look a like.
    Checked ring gap, .059 way too big should be around .008 or less. I'm sure i will never
    find the right size, who is a ring maker? Or what wood you do?
    Don
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  2. #2 Re: Rings too small 
    Senior C-Moto Guru humanbeing's Avatar
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    What did u ordered?
    Typical 200 = 63.5mm as
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  3. #3 Re: Rings too small 
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    I ordered a X-Pro 63.5 cylinder, piston, pin,gasket ring kit for 200cc air cooled atv/ dirt bike.
    From Motopartsmax.com. This is a complete set not a mix and match. Model number from there site is
    304-999056. Should be right, not. What should i do?
    Don
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  4. #4 Re: Rings too small 
    Senior C-Moto Guru humanbeing's Avatar
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    Stolen from XR200R (63.5*62.2) shop manual

    Something wrong in there. Measure diameter... http://img.tradekey.com/images/uploa...a68c20d23d.pdf of piston / rings... Are there any logo/ markings? Picture the close ups, we can tell it's from OK brand or NOT...
    Last edited by humanbeing; 08-11-2017 at 05:43 AM.
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  5. #5 Re: Rings too small 
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    cylinder and piston fit is fine. Right at 63.5 mm. bore. First and second rings are marked S-DJ.
    Oil rings will almost fall through the bore.
    Don
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  6. #6 Re: Rings too small 
    Senior C-Moto Guru humanbeing's Avatar
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    Top grade rings retailed at least ~$4. Don't know WTH is that regular grade DY(~$1 https://item.taobao.com/item.htm?id=523105059695) wanna be in that kit...
    http://www.mychinamoto.com/forums/sh...ll=1#post73089
    Via agent = https://www.yoycart.com/Product/543952872707
    ===
    Old sckool bike mechanic in southern China prefers JCC (a Taiwanese brand that had factory in Fujian) piston
    http://www.ztjg.com (The trademark that looks something as "N Y") also a big player in OEM industry...
    Last edited by humanbeing; 08-11-2017 at 10:49 PM.
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  7. #7 Re: Rings too small 
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    Thanks, I will reorder rings in US first and if no fit again I will order from China.
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  8. #8 Re: Rings too small 
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    Got my new rings today and they fit fine.
    Don
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  9. #9 Re: Rings too small 
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    Human being
    Do you have head torque spec. for the 200cc engine?
    Don
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  10. #10 Re: Rings too small 
    Senior C-Moto Guru humanbeing's Avatar
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    CB (ohc) or CG (ohv) ?
    CB -Ref to XR200 shop manual http://pan.baidu.com/s/1dD3V81F
    CG -Ref to CG125 shop manual https://josemaco.files.wordpress.com...h-62ktjam5.pdf
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