Hello everyone my question is whats The best spark plug to use for my GN1s that are fully race ported & will be run at @ 28lbs Of boost and what to gap them at. I'm using a 6870 Turbo with 93 n alky on my 4.1. Thanks guys
I know Champion recommended 103 plugs for their alum heads when they were first introduced, and this was before 109 builds were into the 9's yet....... important for aluminum heads.
non-projected tip. non projected tips help to avoid detonation...............
Me too. I've always used projected plugs and never had any problems. But it's hard to argue with knowledge and reasoning that makes sense and backed with experience.Nick, thanks for the info. Definitely got me reconsidering my plug choice.
I run ar3932 but these are non resistor plugs, and some have interference problems with them. Gapped out of the box, which is tight. Any plug on e85, i gap to .025.
That is where I got my 5430s. That was the only place in the US I could find them. I wish a TB sponsor would carry some.here is a link to a source. (no tb.com sponsors carry them, so I think its ok to post this.)
not sure how many they stock, and I have no connection to them, I just found them after googling around for a while.