Originally Posted by funola

I thought your set screw was placed to plug up the glow plug hole where the flare was. Didn't even consider placing it through the prechamber into the head. How long do you expect that to last? I wouldn't even consider it. Wasted effort IMO.

Sorry, didn't mean to beat him up. It was to understand why he did what he did, learn from other's mistakes.

If I were to do such as job, I'd have a good glow plug on the bench before starting so I can take measurements in order to choose the correct drills and taps.