Best Spark plugs for forced induction App?
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Joined: Oct 2004
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Best Spark plugs for forced induction App? I was just curious as to what the best spark plugs were for a forced induction application, high boost that is... I'd prefer something that'll last through hell and back, as I don't really want to change them that often. I've seen on the majority of the sponsor sites that copper cored plugs seem to be a popular item, however do those last a while? I've also seen NGK Iridiums, I need something two or three heat ranges below stock.. Thanks for your time.
NGK TR6's are like 3 heat ranges colder than stock.
I have used TR8's a bit, and like the Autolite 3911's a bit more. I am running 19-21 psi, and have my plugs gapped at .025.
Cheers,
John
I have used TR8's a bit, and like the Autolite 3911's a bit more. I am running 19-21 psi, and have my plugs gapped at .025.
Cheers,
John
spark plugs I have denso iridiums in mine......honestly not much difference from the tr6 pushing 13 psi NR22 I think slightly better idle than tr6 but other than that no other noticeable differences except the price.
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Originally Posted by Pro Stock John
NGK TR6's are like 3 heat ranges colder than stock.
I've run a 7 heat range and an 8 heat range in the NGK's. I stuck with the 7's, they seemed to have the best results for timing marks and keeping themselfs clean w/ retained heat.
i have a set of tr6's in my motor now and am going to the dyno tomorrow, probably see 15psi or so on the 408. should i run the tr6's or swap them out to 7's? i have the 7's and they aren't to hard to change but they do make it idle a little worse so i dont want to use them unless i need them.
