Spark plugs: need to get one-step cooler
#1
Spark plugs: need to get one-step cooler
Does anybody know which spark plugs I should get to replace my stock plugs? I have a Garrett GTX2863R .63 AR turbocharger, and am working on perfecting things, and have been told to get one-step cooler plugs. Are my stock plugs Denso brand, and should I stick with Denso, or go with one of the NGK products that are spec'd for my product, e.g.:
NGK 5018 LFR5AGP Single Platinum
NGK 4469 LFR5AIX-11 Single Iridium
NGK 96779 ILFR5T11 Iridium/Platinum
Naturally I would get one-step cooler, which I think changes the 5's in all the second column part # to 6, e.g. LFR6AGP, etc.
Also, I've heard from someone that my gap should be smaller than stock, around .0028-.003. But the plugs all come with a gap of .0044, if I remember right. One shouldn't adjust gap on an iridium spark plug tip, I hear, so I don't know how to proceed. Should I avoid iridium plugs, so that I can safely regap, or can I regap iridium plugs just fine, or should I be satisfied with the stock gap because it won't make much/any difference anyway to "optimize" the gap anyway?
I'm clueless. Help? :-)
Eternally grateful if you can spare some wisdom, folks.
Sincerely,
-John
NGK 5018 LFR5AGP Single Platinum
NGK 4469 LFR5AIX-11 Single Iridium
NGK 96779 ILFR5T11 Iridium/Platinum
Naturally I would get one-step cooler, which I think changes the 5's in all the second column part # to 6, e.g. LFR6AGP, etc.
Also, I've heard from someone that my gap should be smaller than stock, around .0028-.003. But the plugs all come with a gap of .0044, if I remember right. One shouldn't adjust gap on an iridium spark plug tip, I hear, so I don't know how to proceed. Should I avoid iridium plugs, so that I can safely regap, or can I regap iridium plugs just fine, or should I be satisfied with the stock gap because it won't make much/any difference anyway to "optimize" the gap anyway?
I'm clueless. Help? :-)
Eternally grateful if you can spare some wisdom, folks.
Sincerely,
-John
#3
I know when Dezod was building my kit, i inquired about this exact question and was told it was not necessary. Don't remember the logic/reasoning behind it. When i did my turbo research though, most of the places said it was a good thing to do so i wanted it done. Hopefully Paul_Dezod can enlighten us on this topic.
#4
Does anybody know which spark plugs I should get to replace my stock plugs? I have a Garrett GTX2863R .63 AR turbocharger, and am working on perfecting things, and have been told to get one-step cooler plugs. Are my stock plugs Denso brand, and should I stick with Denso, or go with one of the NGK products that are spec'd for my product, e.g.:
NGK 5018 LFR5AGP Single Platinum
NGK 4469 LFR5AIX-11 Single Iridium
NGK 96779 ILFR5T11 Iridium/Platinum
Naturally I would get one-step cooler, which I think changes the 5's in all the second column part # to 6, e.g. LFR6AGP, etc.
Also, I've heard from someone that my gap should be smaller than stock, around .0028-.003. But the plugs all come with a gap of .0044, if I remember right. One shouldn't adjust gap on an iridium spark plug tip, I hear, so I don't know how to proceed. Should I avoid iridium plugs, so that I can safely regap, or can I regap iridium plugs just fine, or should I be satisfied with the stock gap because it won't make much/any difference anyway to "optimize" the gap anyway?
I'm clueless. Help? :-)
Eternally grateful if you can spare some wisdom, folks.
Sincerely,
-John
NGK 5018 LFR5AGP Single Platinum
NGK 4469 LFR5AIX-11 Single Iridium
NGK 96779 ILFR5T11 Iridium/Platinum
Naturally I would get one-step cooler, which I think changes the 5's in all the second column part # to 6, e.g. LFR6AGP, etc.
Also, I've heard from someone that my gap should be smaller than stock, around .0028-.003. But the plugs all come with a gap of .0044, if I remember right. One shouldn't adjust gap on an iridium spark plug tip, I hear, so I don't know how to proceed. Should I avoid iridium plugs, so that I can safely regap, or can I regap iridium plugs just fine, or should I be satisfied with the stock gap because it won't make much/any difference anyway to "optimize" the gap anyway?
I'm clueless. Help? :-)
Eternally grateful if you can spare some wisdom, folks.
Sincerely,
-John
#5
This is a turbo application so the person who commented on swapping their plugs to the NGK's won't apply to us.
I went with 1 step colder Denso's. And I gapped them to .0024. Seemed to work well for me.
Delorean2006, your car is running better cause your plugs were probably just old and needed replacing anyway.
I went with 1 step colder Denso's. And I gapped them to .0024. Seemed to work well for me.
Delorean2006, your car is running better cause your plugs were probably just old and needed replacing anyway.
#7
Either way, yes I'm still here
#9
I know when Dezod was building my kit, i inquired about this exact question and was told it was not necessary. Don't remember the logic/reasoning behind it. When i did my turbo research though, most of the places said it was a good thing to do so i wanted it done. Hopefully Paul_Dezod can enlighten us on this topic.
Typically, I like to change to one step colder at 10 PSI or more just to help keep that plug cool as possible. Too cold of a plug range can make tuning awkward and not help combust the entire mixture. Too hot of a plug can cause pre-ignition detonation. So it's a balancing act.
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