YZ Engine swap in a WR
Posted September 07, 2012 - 07:17 AM
Posted September 17, 2012 - 05:53 AM
Posted September 18, 2012 - 07:19 PM
as far as I know the frame geometry is the same. I think the only difference is the swing arm pivot bolt diameter.
I put my 2002 WR426 motor into a 1999 YZ400 frame that was plated. As I swapped everything from the '02 to a bare '99 frame, I drilled the 17mm swing arm pivot bolt holes in the frame up to 18mm.
Mine was relatively easy as the 400 and 426 cases are the same. I wonder if you can say the same for the 450. Be careful about placement of other engine mounting holes.
Good luck! It's nice having a plated dirt bike!
Edited by loco4x4, September 18, 2012 - 07:22 PM.