I have a 2005 G35 coupe that has a over temp problem. The over temp has rise the pressure in the radiator and it break. A new radiator was installed but still the same problem. Any possible solution?

 

Did you bleed the system? Compression test?

 

maybe the thermostat is stuck closed and needs to be replaced

 

For overheating when it was previously operating fine, it's likely the thermostat stuck closed.
If the pressure in the radiator rose higher than it was supposed to, that's the radiator cap.
If overheating caused the pressure to rise higher than it was supposed to, replace both.