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Hey Roger: The service manual says " The 7/16 inch bolts attaching engine
to mount are used with rubber bushings which prevent metal-to-metal contact.
Bushings make tensioning of mounting bolts of prime importance. In tightening
nuts, apply a torque of 60 to 80 inch-pounds. After operating engine, and before
flight, readjust these bolts to obtain minimum engine vibration. Replace
bushings at each engine change."
This seems fairly clear. I do not see the problem
about finding a torque. (this is all on page 43 of the service manual). Though
Tony's books may provide assistance to plane owners, He uses the Lycoming and
RV-6 as examples. One should always obtain the service manual and parts manual
for the airplane you are working on. There may be many situations where standard
torques or general procedures are not appropriate. I applaud you on figuring out
that Tony's example was too much torque for our small Continental engine motor
mounts.
Lynn Nelsen
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