XS 650 Motor Rebuild

I got this motor last year with the cylinders seized.  Took the top end off and one of the valves were stuck open.  Most of the rockers look good and tight.  But definately needs new exhaust valves and guides. 

Then we tried to get the pistons out... had to beat on the top of the pistons with a 2x4 and sledgehammer for about 20 minutes before the pistons finally worked their way out.. Should be good with a bore and new pistons/valves. 

A learning experience anyways...