Skip to main content...

The Place for Model-A Ford Carburetors

Instructions for installing Heli-Coils are generally on their package, but here is a summary of how to do it.

Installing Heli-Coils

  1. Drill out damaged threads with recommended drill size (for mounting flange use 21/64").
  2. Use Heli-Coil tap supplied with kit, to cut oversize threads for coil insert.
  3. Screw insert onto the mandrel, of provided tang, until driving tang is fully engaged in slot.
  4. With mandrel, screw insert into tapped hole until insert is 1/4 to 1/2 turn below top surface.
  5. Trim off excess wire.

ˆ Top of Page