AN ACR B767-300 CREW EXPERIENCES A HIGH EGT READING ON BOTH ENGS OUT OF LAS AND A HIGH READING OUT OF SLC. PIC HAD THE ENGS BORESCOPED AT SLC AFTER THE MAINT COORDINATOR DIDN'T THINK IT WAS NECESSARY. RPTR CONCERNED WITH THE COMPRESSOR BLADES LOSING CAMBER UNDER STRESS; CREATING HIGH TKOF EGT TEMPS.

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TEMP 33 DEGS C. ON TKOF; ABOUT 10-15 KTS PRIOR TO V1; THE L ENG REACHED MAX TEMP; SO I PULLED THE PWR BACK 2 DEGS C ON EGT. AT ABOUT 400 FT AGL; THE R ENG REACHED MAX (940 DEGS C); SO THE COPLT PULLED IT BACK ALSO. WE WROTE UP THE PROBS AND INFORMED OUR MAINT COORDINATOR BY ACARS; BUT NEVER RECEIVED AN ACKNOWLEDGEMENT. WHEN LESS THAN 100 NM FROM OUR DEST (SLC); WE CALLED THE LCL MAINT ON VHF. THEY HADN'T HEARD ABOUT OUR PROB; BUT SAID IT WASN'T UNCOMMON. THE LCL MECH BORESCOPED THE ENG PER MAINT MANUAL PROCS BUT SAID #2 MAINT COORDINATOR DIDN'T THINK IT WAS REQUIRED SINCE THE TEMP DIDN'T GO OVER THE LIMIT. ON TKOF FROM SLC; THE L ENG AGAIN REACHED MAX AND WE PULLED IT BACK. I SEE 2 PROBS: THE GE CF6 ENGS ARE HAVING PROBS AND THE MAINT COORDINATOR DOESN'T THINK THAT REACHING MAX EGT IS A PROB. IN THE PAST; WE HAD PROBS IN SLC WITH OVERTEMPS AND INVESTIGATIONS REVEALED THE COMPRESSOR BLADES WERE FLATTENING OUT AS WELL AS GROWING UNDER STRESS; BUT BLADE CAMBER WASN'T ONE OF THE THINGS CHKED ON OVERHAULS. IT APPEARS TO BE A PROB AGAIN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT STATED THAT THIS PROB OF HIGH EGT'S ON TKOF FIRST SHOWED UP ABOUT 5 YRS AGO. ALL OF THE EVENTS WERE OUT OF SLC; UT; WHEN THE FLTS WERE USING MAX TKOF THRUST FOR DEP. THE AIRLINE GOT TOGETHER WITH THE MANUFACTURER OF THE CF-6-50 ENGS; THE ENG ON HIS B767- 300; AND THEY RAN A TEST ON THE COMPRESSOR BLADES. THEY FOUND THAT THE COMPRESSOR BLADES WERE GROWING IN LENGTH AND THAT THEIR CAMBER WAS ALSO CHANGING. BEFORE THIS DISCOVERY THE OVERHAUL BASE WAS ONLY CHKING THE BLADES FOR GROWTH IN BLADE LENGTH. NOW THE CAMBER NEEDS TO BE CHKED. THIS IS NOT BEING DONE DURING ENG OVERHAUL AND THE PROB IS ONCE AGAIN BECOMING EVIDENT. IT IS THOUGHT OR ALLEGED THAT THE COMPANY MIDDLE AND UPPER MGMNT IS NOT AWARE OF THIS PROB EVEN THOUGH SOME OTHER DEPTS ARE. RPTR WAS COUNSELED TO RPT THIS PROB TO HIS FLEET MGR AND CHIEF PLT FOR THEIR ACTIONS. IT WAS SUGGESTED THAT THE ENG MANUFACTURER BE SENT AN FYI FOR THEIR INPUT AND PERHAPS AN ALERT SENT TO OTHER AIRLINES FOR THEIR INFO.