Because flywheels flex and can break hardened washers. Then you have projectiles, and a loose crank bolt.
I don't know if this is correct, but I use thread locker on the threads, and carefully brush a very small amount of lube on the flywheel where the bolt head contacts it. Torquing is smoother, and does less damage to the wheel.
I thought I was the only one that done that When I build rear ends the shur-grip gets ARP lube under the head and red on the treads,the same for ring gear bolts
Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
When I build rear ends the shur-grip gets ARP lube under the head and red on the treads,the same for ring gear bolts 
