jdgreentruck wrote:is it worth indexing plugs ?
also run Non- Projected tip or Projected Tip
The only time I feel indexing plugs makes a difference, is when you don't have a choice
a couple of friends, have some big domes on their pistons with witness marks where the piston had hit the ground straps....so for them it is worth it to index their plugs.
On my motor without interference issues, I saw no gains when I tried indexing
You should try it and see for yourself, results may very.
As for the plugs, most guys are running non-projected plugs in race motors, less chance of the ground strap becoming a glow plug.