Head to Head : NGK or Denso Iridium ... ???
11-04-2003, 07:06 PM
#1
Honda-Tech Member
Thread Starter
Head to Head : NGK or Denso Iridium ... ???
why...?
or will the numbers just decide...?
I forgot to include the OBX V-slotted Iridium plugs...
Modified by digitalcongo at 11:55 AM 11/9/2003
or will the numbers just decide...?
I forgot to include the OBX V-slotted Iridium plugs...
Modified by digitalcongo at 11:55 AM 11/9/2003
11-04-2003, 07:43 PM
#2
Senior Member
Denso Iridium all the way. I've never had any hint of a problem with mine, and they seem to be holding up to my abuse better than any NGK's I've ever seen. Maybe I just got lucky, but I have several friends who swear by them also.
11-05-2003, 06:03 AM
#3
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Re: (dc231)
This is just what I "heard" so I'm sure someone will dispute or confirm it soon.
But I heard NGK has better conductivity and spark because of the better/higher copper content. But they don't last as long.
Denso last longer but not as good of a spark.
But I heard NGK has better conductivity and spark because of the better/higher copper content. But they don't last as long.
Denso last longer but not as good of a spark.
11-06-2003, 12:14 AM
#6
Senior Member
I'm notoriously **** about things such as spark plugs, I check them every week or so, and always replace them as a set, even if only one plug went bad. From my experience, the Denso Iridium outlasts the NGK Iridium by a good 40%-50%. They both work outstandingly well, however I have not tested each of them on the dyno so I can't tell you which one is more effective. The difference is small, however, and the only place where it would really matter would be in a fully prepped race car. But at this point my faith remains strong in Denso.
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