differences between XR350 and ATC 350X engines....

[EvilMooseofDoom]

Anyone know offhand the structural/physical differences between the 1983-1985 XR350R and ATC 350X engines, if there are any?

[85ytz250n]

the XR350 had dual carbs, and obviously the kickstart would kick backwards. I have an engine off of a 350R but never even seen a 350X so the carb difference is all I know for sure about.

Barry

[random-strike]

my 85 xr350r has one carb.

the XR motor also has radial valves.

other than that... not sure.