spark plug questions
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spark plug questions
2.0 gsr motor
9.5.1 compression
440 hp at 24psi
only run like 19 psi on the street
i am running the ngk v power plugs r5671a-9
is this plug right for this power level?
what should i gap to?
car is sputtering on a new set of plugs after about 300miles. 2 19 psi pulls couple more at 14 psi and about 300 miles of highway driving. sound normal?
9.5.1 compression
440 hp at 24psi
only run like 19 psi on the street
i am running the ngk v power plugs r5671a-9
is this plug right for this power level?
what should i gap to?
car is sputtering on a new set of plugs after about 300miles. 2 19 psi pulls couple more at 14 psi and about 300 miles of highway driving. sound normal?
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Re: spark plug questions
I also like the older non-resistor steel electrode NGK race plugs, R5671A-x. In a B-series you'll want an 8, so R5671A-8. It's what I'd run, the only reason to go to iridiums on a B-series is if you have a Hondata S300; their daughterboards are poorly shielded and susceptible to EMI.
#7
Re: spark plug questions
Cheap iridium are not good. Avoid Denso, Bosch, etc, as I've never had a good experience with any of their plugs in a performance application. I wasn't a big fan of iridiums for a long time, but after talking long and hard with a rep at PRI, harrassing NGK via phone, and using enough NGK Iridiums I'm a believer.
I also like the older non-resistor steel electrode NGK race plugs, R5671A-x. In a B-series you'll want an 8, so R5671A-8. It's what I'd run, the only reason to go to iridiums on a B-series is if you have a Hondata S300; their daughterboards are poorly shielded and susceptible to EMI.
I also like the older non-resistor steel electrode NGK race plugs, R5671A-x. In a B-series you'll want an 8, so R5671A-8. It's what I'd run, the only reason to go to iridiums on a B-series is if you have a Hondata S300; their daughterboards are poorly shielded and susceptible to EMI.
go on... what about a chipped obd1 with lets say ectune.
i ran r5671a's for a while without issue w/ obd0. they are cheap, and come real cold.
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Re: spark plug questions
2.0 gsr motor
9.5.1 compression
440 hp at 24psi
only run like 19 psi on the street
i am running the ngk v power plugs r5671a-9
is this plug right for this power level?
what should i gap to?
car is sputtering on a new set of plugs after about 300miles. 2 19 psi pulls couple more at 14 psi and about 300 miles of highway driving. sound normal?
9.5.1 compression
440 hp at 24psi
only run like 19 psi on the street
i am running the ngk v power plugs r5671a-9
is this plug right for this power level?
what should i gap to?
car is sputtering on a new set of plugs after about 300miles. 2 19 psi pulls couple more at 14 psi and about 300 miles of highway driving. sound normal?
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Re: spark plug questions
Originally Posted by welfarepc
iridium is around 600% harder than a conventional copper core tip and will produce a better spark.
I've never seen a comparison involving an iridium, but I doubt they produce a better spark. The pointy tip of an iridium - much like platinum, or "funny" shaped electrode plugs - makes it easier for the ignition energy to jump the plug's airgap which dictates a weaker spark. GRM did an article on this 8-10 years back, and V=IR with and eye to P=VI (basic equations for the relationships of voltage, amperage, resistance, and power) concurs.
That being said, as long as the plug works then don't worry about it. It's splitting hairs.
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