I have noticed that most of the discussions on Lifan bikes / engines (good and bad) have been in this section of TT, so that's why I'm here. I just received a 200cc Lifan engine today that I purchased on eBay. I plan to install it in a 1985 Honda XR350 rolling chassis. After a "once over" of the engine, I see that the $400 I paid was not in vain, but only time will tell if the engine runs ok, and lasts awhile. Heck, if it runs for 2 or 3 years with little problems, then blows up, I'll just buy another! I don't plan to do any heavy racing, or test the limits of this engine. It will be used mostly for barn yard / light duty trail riding, so I have reason to believe it will last a good long time. I have a few questions, and hope some of you that have these bikes can help me out. The XR350 has a 520 rear sprocket. The Lifan came with a 428 on the counter shaft. Is there a Honda 520 front sprocket that fits the Lifan counter shaft? Is there room for a 520 chain on the Lifan? Or should I go with 428? Do you know if the exhaust system for a CRF150/230 will fit this engine, with little to no modifications? Or will I have to make an exhaust from front to back? The carb is a Kinzo brand. It looks like a Keihin clone. I understand these engines are jetted on the lean side, and I know I'm going to want to go richer. Do Keihin main jets fit these carbs? The main jet in the Kinzo is not marked with a size, or not that these old eyes can see, so what would be a good starting point for a jet? The engine number starts with a 163. Is that the short or long stroke? And lastly, is there a wiring diagrame on the internet some where? All I will need to buy is a chain and sprocket, clutch cable, make the exhaust or retro fit one, a battery, make motor mounts, and find a used dual sport headlight and tail light. I figure for under $600 total, I'll have a like new trail bike, with a much better frame and suspension then the Chinese bikes. Thanks in advance for any help.