The typical Haynes (and other) repair manuals have torque values for various fasteners that are used in each section of the manual.
Torque values for NPT and SAE fittings.Years ago, in a career far,far away, I worked as a backroom mechanic in a Texaco station. Station was owned by a Bulgarian, Peter Blagoev. Peter and my coworker, Steve, told me tales of their friend, Brutal Bill. Bill's big claim to fame was mounting hub caps with his head. I confirmed this talent on an infrequent visit from Bill.
Bill was also a chronic over-tightener of fasteners. He sent us a post card from Ohio, once, to announce his hire and success at Cummings Engine. About two months later, he was back in our shop, drinking Cognac and relating that Cummings didn't use all of his talents. We figured that was about the lead time it took for the engine failures and the REAL discovery of Bill's prowess with a wrench.
