i changed my waterpump on my 99 z and just wanted to know an estimate of how much coolant to pour back in so there is not too much or too little. thanks

 

Unhook the hose on your throttle body or your throttle body bypass if you have done the throttle body bypass mod and pour in coolant untill it come out ...then reconnect the hose and keep on filling till you get the radiator full..that will get most of your air bubbles out...let the engine run with the radiator cap off untill the thermostat opens and then refill the radiator..you will need to monitor the coolant level and keep topping it off untill it is full..eliminating the air bubbles is your main concern when refilling the cooling system.

 

Also, it helps to drive it and get it hot, then let it cool off completely, then add more, and do this about 3 times. It's pretty hard to add too much. Just watch your resevoir.

 

just remember always too much is good it will overflow if to much but not enough get too hot and you will be pissed also be carefull on the ratio u use on the coolant, that orange **** is corosive if used at too high of blend, and you might want to use distilled water because it is not as bad as tap water .