166 FFM Engine
 

Hy i have china bike Chituma with 166 ffm engine. I bought it with low kilometars, and this engine spends a lot of oil. I guess thats piston rings od valve rubbers ( I`m not sure if that is real name in english ) are in bad shape.... I hope you could tell where I can buy those parts or if someone know dimensions of piston rings for this engine? I tried to find service manual to download but i haven`t found it....If you can help me somehow I would be grateful!!

223 MD33 clone? I will bet that is powered by Zongshen or other smaller brand, similar story heard in chinese foum 8O BUT not Loncin / Jialing :lol:
IF want to burn $$$ Genuine Honda SL230 (a domestic market model) parts will fits.
Genuine Loncin: http://item.taobao.com/item.htm?id=6021892573 | Generic for ZS & clones: http://item.taobao.com/item.htm?id=6763804175
Depends the situation, one of these will suit ur case:
http://item.taobao.com/item.htm?id=10226973122
http://item.taobao.com/item.htm?id=9877705399
http://item.taobao.com/item.htm?id=10236432912

https://www.819599.com/assistant/dat.../image-396.jpg

SL230 never offered in the USA

only CR230

http://webmotorcyclenews.com/wp-cont...l-elegant1.jpg

Those have 6 speeds

So you are 100% sure that parts fit from honda to my engine?

I have opened this engine and found piston in very bad shape...I really need to change piston so I`m looking for new piston but nobody has any spare parts for chituma around here. If piston really fit from honda then I`ll buy piston from honda.

Your piston you been looking for.....
 

https://a.aliexpress.com/_mO1J9Jl. Will fit for sure

If your piston is bad, I would look closely at the cylinder wall. Replacing both piston and cylinder is a common venture. They are available in combination from a lot of sources. Likely the Brozz piston/rings/cylinder will be a bolt-on, see here:

https://shop.brozz250.com/eshopprod_...r_Assembly.htm

Note the image(make it bigger) and you will see the cylinder head, which should confirm the part is correct.... I think. Mebbe yours is smaller bore??

You may look here:
https://www.aliexpress.com/item/32769547579.html?spm=a2g0o.productlist.0.0.6f86170 cLwQQAU&algo_pvid=022f276f-6045-41c3-8f0b-93cd62395cc9&algo_exp_id=022f276f-6045-41c3-8f0b-93cd62395cc9-31&pdp_ext_f=%7B"sku_id"%3A"62282761417"%7D

Air-cooled piston/rings/wristpin/cylinder/gasket for CG250