plug index

[Jeff Smith]

If one were to find extra time and had nothing better to do... which way do you want to have the opening for the plug gap facing? Electrode towards the outside, so the opening is towards the center?
I know this is not a high hp area but was just curious.

TIA
John

[Dave Hopple]

Hey John..
haven't did this since my drag racing days (a long time ago, and far, far, away) but we use to angle the opening toward the intake valve. this way the spark is closest to the incoming fuel mixture.
i am sure that some of are more savey engine builders will want to add to this...
but, that's my story...