What was found
WHILE CLIMBING THRU 2000 FEET AFTER TAKEOFF, THE NBR 2 ENGINE EGT WENT OFF SCALE HIGH AND EPR DROPPED. ENGINE WAS SHUT DOWN AND 55,000 LBS OF FUEL WAS DUMPED. AIRCRAFT RETURNED TO DEPARTURE AIRPORT WITHOUT INCIDENT. MAINTENANCE INSPECTED ENGINE WITH NO DEFECTS NOTED. GROUND RUN AT IDLE WAS NORMAL. ENGINE TO BE BOROSCOPED. THE NBR 2 ENGINE FAILED A BOROSCOPE EXAMINATION. AIRCRAFT WAS FERRIED ON TWO ENGINES BACK TO MSP FOR AN ENGINE CHANGE. EXACT PART CAUSING PROBLEM TO BE DETERMINED.\N\NCORRECTION: ADDED INFO IN TEXT