Nissian maxima when timeing belt snaps can it bend the vaules when belt snap car shut off on freeway?

the car had a over heating problem thought owner changed water pump an timeing belt @ 100,000 but he didnt i changed the thermostat car still over heated|||year,size engine of your vehicle needed to determine if it non interfernce or interference motor|||when the belt snaps the top end of the motor stops moving while the bottom end keeps moving. so when the motor comes around the pistons will smack valves that should be closed. so yes if the belt breaks than expect to do a head job|||Normally not.|||Nissan doesn%26#039;t use belts, they use chains. Look for something else. Have you checked the Diagnostic Codes?|||??Are you asking about Over Heat or Bent Valves? Was Timing Belt Replaced? How many Miles? To Check for Bent Valves without pulling the Head(s) crank the engine over by Hand after the timing belt is Properly Replaced.