Head torque procedure

daveforty said:

'79 onwards T140s used composite head gaskets.

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'78 models onwards (71-4619).

I previously checked my head bolts by seeing if the torque wrench would move the bolt before it clicked. This procedure has the tendency to overtighten bolts. After I stripped one bolt, mechanic (retired aircraft mechanic) demonstrated the proper procedure: loosen the bolt a little, then torque to correct setting. So far so good.

Let the motor cool completely before retorquing and check the valve lashes after