Join Date: Nov 2009
Location: Lander, Wyoming
One must use a Crankcase SET. Not a Left half from one engine and a Right half from another. All of the bearing bores are "Line-Bored". As in the alignment dowels are in-place and the cases are securely bolted together, then boring begins, Perfectly Straight thru both sides.
Even a 1/2 a thousandth of mis-alignment between the 2 sides of a mis-matched case set would not be good.
2008 and 2009 are identical. Probably still the same cases, other than paint color thru 2017.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 85,000+ miles & counting