Rocker Shaft Bolt Helicoil

[TTipe]

The helicoil for the third rocker pedestal on cylinder 5 on my GN1's may not have been properly installed. The top thread of the helicoil was unsupported in the countersink and interferes with the bolt down of the rocker shaft at cylinder 5. Does anyone know if Champion uses a thread locker (locktite) as part of the install process?

 

[Trashman]

Probably not why are you going to try to remove it? If it is locktight it will melt quickly with a torch, You can grab the tail that is sticking up with a pair of needle nose and carefully try to unwind it & try to spiral it out counter clockwise while lifting up, or you can get a small sharp chisel and right where the lifted thread meets the head, give it a shot with a metal hammer and it will scribe that single thread, then grab the tail with a pair of needle nose and work the tail back-and-forth without pulling it out of the head, it will break right where you scribd it. Have patience when you're bending back-and-forth you don't want to distort that thread, there's not much supporting it, also when you're scribing the top thread make sure the chisel doesn't touch the second thread underneath.