One last side gap bit of info. Projected nose plugs, like the ones pictured above, show less of an improvement from side gapping than do non-projected nose plugs (since the projected nose is kind of hanging out there in the combustion chamber in the first place).
Colder plugs, as are usually found in race motors, are not a projected nose design, so side gapping works well there.
OK, enough already. I'm 60 years old and it's almost 2:30 am. Beddy-bye time for grandpa!
