Anyone know where I can get one? I need to fix the heads on my z. I don't want to remove the heads if I don't have to.

 

I am pretty sure the heads are gonna have to be off to re thread them right, if you did spark plugs or wires you know how tight the area is

 

I bought a car once that came with a stripped out spark plug hole. I wasn't ready to pull the head, so I fixed it with a thread repair kit made by Loc-Tite. If remember right, it was a two part epoxy similar to JB Weld and a release agent. I was a little skeptical about it working on a spark plug hole, due to the heat and periodic removal of the plug, but it held up fine until I tore the engine down a few years later. This was on an iron head, so I don't know if the results would be the same aluminum threads.