I recently installed a new mishimoto radiator, Z1 hoses, and thermostat (w/ new gasket) on my 2004 350z. I bled the coolant system, torqued the thermostat to 85 INCH pounds, and felt like everything went smooth and simple. Now the car overheats, A/C doesn't work anymore, and coolant leaks from the thermostat housing. I've tried various things with no luck. Got any suggestions?

 

Bleed more

 

Agreed - there's still air in the system. Try using a Lisle funnel to properly bleed your new radiator.