lifan 110

hi there chaps i am new to this forum and wondered if anybody could give me a little help... i recently bought a second hand 110 lifan engine for my pitbike, at high revs the bike just runs so flat and litterally has no top end pull... i have changed litterally most things i can think of... i...

hey guys just another question (couldnt find much in the search) as my other thread said im thinking of 88 bore kit or 110 motor swap. my question now is wat are the lifan 110 engines like? are they reliable ? i know there fairly cheap but i want something pretty reliable so i dont mind spending...