85 200x compatibility

[weaseljeep]

also what other parts off of other equipment would work.. i know the head and cam from an xr200r would work and the cam is a little hotter , what about just the xr200. i need help to get this project finished before middle of jan.

[ATCMedic]

The top end parts from a 185s, and any 80-86 200(s,m,e,) will work for you.

[TRI-Zbrian]

im surprised no one has ever used the old xr engine that had 2 intake and 2 exaust valves twin headers and dual carbs i used to have an 85 xr 200 with this engine and it was lot more powerfull then any 200x engine i think that the xr engine would be a good power plant for a 200x.