A B757-200 WITH CHRONIC HISTORY OF #2 ENG HIGH EXHAUST GAS TEMP AND OVERTEMP ON TKOF WAS TAKEN OTS AND ENG REPLACED DUE TO CAPT'S REFUSAL TO OPERATE ACFT.

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ACFT HAD A HISTORY OF OVERTEMPS (4 OR 5) ON TKOF. ON OUR TKOF; R ENG EGT WENT TO 897 AND RED RIGHT AFTER ROTATION. FO IMMEDIATELY PULLED THE ENG BACK TO PUT EGT BACK INTO NORMAL BAND. UPON CONSULTATION WITH DISPATCH AND MAINT TECH; WE CONTINUED TO ORD AND WROTE UP PROB. WHEN WE GOT TO GATE; THE LEAD TECHNICIAN ON THE ACFT WROTE UP THE CORRECTIVE ACTION AS EXCEEDANCE WITHIN LIMITS -- OK FOR SVC. WHEN I TOLD HIM THE ONLY REASON THE TEMP DID NOT GO HIGHER WAS BECAUSE MY SHARP FO PULLED THE ENG BACK; HE REPLIED THAT IS WHAT YOU ARE THERE FOR. I EXPLAINED THAT IS HOW THE ENG DID NOT GET HOTTER; NOT TO CONTINUE WITH A KNOWN PROB. I THEN CALLED MAINT TECHNICIAN AND HE SAID HE WANTED TO CHANGE THE ENG; BUT ENGINEERING WAS TRYING TO KEEP THE ENGS ON THE WING. HE SAID HE WOULD PULL UP THE HISTORY AND GO BACK TO ENGINEERING AND STAY ON THE LINE. 2 MINS LATER HE CAME BACK AND SAID THE ACFT WAS OTS. THE ACFT WAS THEN FERRIED TO DFW AND TODAY; THE ENG WAS CHANGED. MY PROB IS; WHY DID THE ORD MAINT TECHNICIAN SAY THE ENG WAS OK; BUT THE RPT FOR THE ACFT TODAY SAID IT OVER OVERTEMPED BY 115 DEGS? ALSO; THE ACFT WAS SUPPOSED TO GO TO SNA; AND WITH THAT DEP; THE ACFT WAS IN A PRECARIOUS SIT IF ALLOWED TO CONTINUE. I ALSO THINK THE MAINT TECHNICIAN COMMENT ABOUT THAT IS WHAT I AM THERE FOR IS RECKLESS.