1981 KZ650CSR

oh yeah.
So I did a stack height on the jugs and head, 140mm 101mm and 120mm. Add 13mm for the case and the numbers are spot on for the new studs.
153, 116, and 133mm.

interesting. So i went to Kawasaki.com and punched in my vin numbers.
A few things are different here.
On my starter clutch I had 2 spacers but here they do not show them.
My block number is kz650DE036010. is it possible this block is not the original and the studs etc... or do I just choke it up to bad mechanicism. New made up word of the day.