I have replaced the water outlet on my 2004 doge stratus twice what would be making this happen?

Ah! The only really rational explanation I can see for THAT one is mechanical stress, like perhaps the upper radiator hose is too short or the motor is moving too freely (like from a bad motor mount) under torque. The motor will rock under torque, especially with a manual transmission, as you accelerate and decelerate. It's that equal-and-opposite-reaction thing. If the motor can rock too far, it may be rocking so far that the upper radiator hose reaches the end of its flex and yanks on that neck, eventually stressing it so far that it breaks off. You might do well to check out the motor mounts carefully, even set the park brake & chock the wheels, then have someone rock the car back & forth (in gear) so you can watch the motor for unusually large movement. Ah! The only really rational explanation I can see for THAT one is mechanical stress, like perhaps the upper radiator hose is too short or the motor is moving too freely (like from a bad motor mount) under torque. The motor will rock under torque, especially with a manual transmission, as you accelerate and decelerate. It's that equal-and-opposite-reaction thing. If the motor can rock too far, it may be rocking so far that the upper radiator hose reaches the end of its flex and yanks on that neck, eventually stressing it so far that it breaks off. You might do well to check out the motor mounts carefully, even set the park brake & chock the wheels, then have someone rock the car back & forth (in gear) so you can watch the motor for unusually large movement.

I assure you - there's no way it's building up enough coolant pressure to blow that thing apart - the radiator core would never stand up to that much pressure. I assure you - there's no way it's building up enough coolant pressure to blow that thing apart - the radiator core would never stand up to that much pressure.