Quote Originally Posted by MidMoMan View Post
I noticed Zongshen manufactures and overhead cam version of the 250 engine. Did your Yamaha 250 install relatively easily? I'm just thinking down the road and looking for a learning experience more than anything.
These engines, while OEM'd specifically by Zongshen for Dongfang, are pretty much the same as numerous other Zongshen and other brands' thumpers as found on chinariders.net under the dual-sport and off-road sections. Many members have had good experiences with the engines as long as you don't try to modify them internally. For performance, you are limited to exhaust and carb, and gearing. However, there aren't too many Dongfang bikes on chinariders, so you are really going with advice in general, vs. specific, like you are here; nevertheless, I would read up on the dual-sports to see what people do with various brands' engines (i.e. RPS Hawk and Magician, and Bashan's Brozz, Shark, and Enforcer).