Upgraded B58 Girdle and Oil Pump Bolts

The OE (Original Equipment) B58 Fasteners are TTY (Torque to Yield); a method that is economical to produce in large quantities with moderate material standards. This fastening technique allows each fastener to reach its maximum theoretical elongation, thereby providing maximum clamping force based on that material's property and strength. However, a significant issue with this method is the fasteners' non-reusability. Additionally, upon close examination of clamp load, it becomes evident that two fasteners positioned adjacently do not apply the same amount of force, which is problematic. If we cannot rely on the even distribution of load, we cannot trust these fasteners—as evidenced by the failures we are observing. Another concern is the availability of replacements, indicating that many of these fasteners are not being replaced during engine rebuilds. While the OE B58 Girdle fasteners may suffice for original equipment properties, they fall short for enhanced output. In higher power