Spark plugs ?
Well, it depends.
im sure this has been covered before, theres also recommendations on the sloppy mechanics wiki<----
it.
But i use NGK BR7s with out of the box gap (.028?) for lowish boost, like less than 15-16 on my setup. But theres other factors besides boost pressure that should factor in. For a mostly stock engine they will work good less than 18 psi IMO.
im sure this has been covered before, theres also recommendations on the sloppy mechanics wiki<----
it.But i use NGK BR7s with out of the box gap (.028?) for lowish boost, like less than 15-16 on my setup. But theres other factors besides boost pressure that should factor in. For a mostly stock engine they will work good less than 18 psi IMO.
i use tr6's for low boost (~12psi) on pump **** 91 and 70/30 water-meth. never had a problem .028 gap.
switched to br7ef right at the end of the season when I upped the boost to 14psi, never got traction for a full pass tho.
switched to br7ef right at the end of the season when I upped the boost to 14psi, never got traction for a full pass tho.
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It would be nice to know the "real deal" with sparkplugs now. Since the advent of FI, there are no more worries about fouling a cold plug, so how do you determine if a plug is too cold? Too hot is simple, but where do you draw the line?