according to mister haynes,
loosen the clip, and remove the bottom raditior hose from underneath the car. On the Z22SE engines, ALSO remove the drain plug under the coolant pump housing. ( At the back of the engine timing chain end) The plug looks a bit of a nightmare to get to, I would just loosen the bottom raditior hose and flush the system through.
You double posted for some reason del,so deleted for you.. DAz