Hi all so i have built my cyclekart and instaled a gy6 125cc engine which is fitted to most cheap chineese mopeds, purely because i had the engine !, it had its complications instaling it, but it works, i managed a top speed of 36 mph on dirt tracks, and its quite quick of the mark it wont spin the wheels but not far off from doing so . I have not driven a kart with a gx200 engine but i think the gy6 engine is an equal match !!!?.
The only issue i have is that running over rough ground the engine starts to splutter and smoke a bit due i think to the float shaking about causing the engine to run very rich , dose the honda engine have a float bowl and have the same problem ??.