Run it at idol for the first 5 mins, 25% more is acceptable, then let it cool, then ride it at light throttle for a minim of 30 mins and let it cool and re torque the head, then run it for another 30 to 40 mins at light throttle.
this is the info I was given with my cylinder after it was repeated, they also gave me a small amount of castor oil to wipe over the cylinder and piston.