Torque values correct?

lexer440

Petty Officer 1st Class
Joined
Aug 30, 2010
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222
787 RFI engine; bolts that hold the magneto cover on, the ones that are put in behind the flywheel. They are small, 5/16 bolts and I am questioning torque values after shearing one.

I have two different manuals for this engine and one says torque to 80ft/lb and the other says 81ft/lb's. they are a grade 8 bolt and surely will not take more than 30ft/lb's?, and thats why I guess one sheared, any advice from you guys that have done this?
 
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