Here you go!
Cylinder head usable range compression 105 -164 psi
Cylinder Warp 0.03mm
Piston
cylinder dia 86.020-86.035 service limit 86.1mm
piston dia 85.910 85.925 service limit 85.8 mm
piston clearance 0.105-0.125 mm
ring grove clearance 0.05-0.09 service limit 0.19mm
ring grove width 1.124-1.26 service limit 1.34 mm
ring thickness 1.17-1.19 service limit 1.10 mm
piston ring gap 0.02-0.04 service limit 0.70 mm
Piston pin dia 18.995-19.00 service limit 18.96 mm
Piston hole dia 19.00-19.006 service limit 19.07 mm
small end inside diameter 24.002-24.013 service limit 24.05 mm
Source 1988 kawie service manual
Alan