I believe the specs call for a torque value of 120Foot lbs or some huge number like that ... There is no way the exhaust nuts have to be that tight.
I clean the inside of the exhaust flange and make sure the pipes and sealing washer fit well, then clean the threads (chase them with a thread file if necessary)use high temp never seize and make sure the nuts go on smoothly all the way by hand, then tighten 1/16th to 1/8th of a turn.
I remove my right exhaust to change the oil in my 1984 R80RT (it's just easier)and have never had the exhaust nuts come loose or stick on.
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