Spark Plugs for N/A
05-24-2011, 07:52 PM
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Spark Plugs for N/A hello guys...i've been doing a search here on what spark plugs to run on a full bolt-on car, but i can find anything useful just mixed answers, i've had my car for a while now and since i got i've been running some Bosch Platinum +4 Spark Plugs, and i wanted to change to NGK which is what most people here are running. But some people say tr6's for N/A(which i heard is also a nitrous plug) and other tr55's. Can some one more experience please tell me what plug would best suit my application. thanks alot in advance.
05-24-2011, 07:56 PM
#2
i had NGK tr55's for a long time and they ran fine. I then went ot a heads/cam car and upped the compression, so i made the switch to a colder plug. Im now on the TR6 and its running fine as well. Ive always heard to err on the side of being too cold, so a full bolt on car would probably be alright with either 55's or 6's. mine are gapped at .045 now too.
And the TR6 is still a projected tip plug, so i think the preference now is to run something like the BR7EF for nitrous.
And the TR6 is still a projected tip plug, so i think the preference now is to run something like the BR7EF for nitrous.
05-24-2011, 08:04 PM
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i had NGK tr55's for a long time and they ran fine. I then went ot a heads/cam car and upped the compression, so i made the switch to a colder plug. Im now on the TR6 and its running fine as well. Ive always heard to err on the side of being too cold, so a full bolt on car would probably be alright with either 55's or 6's. mine are gapped at .045 now too.
And the TR6 is still a projected tip plug, so i think the preference now is to run something like the BR7EF for nitrous.
And the TR6 is still a projected tip plug, so i think the preference now is to run something like the BR7EF for nitrous.
05-24-2011, 09:38 PM
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N/A heads and cam here running NGK TR5's with .040 gap...N/A likes .050 gap. TR5's come pregapped at .039 and you can only +/- .010...so you can squeeze .049 outta TR5's but the TR55's are pregapped at .055. TR6's are a colder plug for nitrous and not needed here.
End result, run TR55's and gap to .050 or leave at .055. That's what I'm going to next for sure after doing a buttload of research myself on N/A.
End result, run TR55's and gap to .050 or leave at .055. That's what I'm going to next for sure after doing a buttload of research myself on N/A.
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05-25-2011, 12:31 AM
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Our spark plug gap is no longer set for .060 as originally stated when the cars were new. I think it was revised down to .035 or something close. I have run TR55s at .060, .055, .050, .045 for extended periods with no issue on either. I am currently running TR5s at .045 (IIRC) with no issue.
