[XLsior]

Plug released its grip...

Cross threaded...quite badly. The thread tip of the extracted plug shows it started right at the tip all the way down.

I made a thread chaser out of a Chinese 'performance' sparkplug...So you can see what I think of its performance as a thread cleaner by making 2 disc cuts either side for swarf.

In other words don't get these orange 3 tip plugs...

Always start threading in spark plugs by hand people...

There must be enough material left to have some bind as a new NGK did seat with 1 half click of the wrist...

Glad I did it now while the head was on the bench as quite a bit of chewed thread material fell out of the spark plug hole...

This original Honda bike project is more of a personal shed/garage ornament and conversation starter, which I am just saving from a lost fate.

Yes I am trying to make it run. But replacement parts and maintenance make it expensive for long term on road viability.

Anyway If the plug holds I'll run it, if it ejects then I might think about helicoils and such...