Not spark plugs again...
#1
Not spark plugs again...
Found this article:
http://www.ngkspark.com.au/pages/bulletins/T01-7.htm
It isn't a direct comparison between Denso and NGK plugs, but it suggests a good reason why NKG Iridium IX plugs (0.6 mm tip) last two to four times as long as Denso Iridium plugs (0.4 mm tip) and still show similar performance. Apparently, going from 0.6mm to 0.4mm SERIOUSLY compromises the life of the plug for not too much performance benefit.
The article also suggests that the Densos would have to be re-gapped much more frequently. That jives with my experience -- I had Denso Iridium Powers and definitely recall re-gapping the plugs after around 20k miles (they had gone from 0.044" to about 0.045). I now have NGK Iridium IXs, and I recall that all six gaps were still perfect after about the same mileage.
FWIW...
http://www.ngkspark.com.au/pages/bulletins/T01-7.htm
It isn't a direct comparison between Denso and NGK plugs, but it suggests a good reason why NKG Iridium IX plugs (0.6 mm tip) last two to four times as long as Denso Iridium plugs (0.4 mm tip) and still show similar performance. Apparently, going from 0.6mm to 0.4mm SERIOUSLY compromises the life of the plug for not too much performance benefit.
The article also suggests that the Densos would have to be re-gapped much more frequently. That jives with my experience -- I had Denso Iridium Powers and definitely recall re-gapping the plugs after around 20k miles (they had gone from 0.044" to about 0.045). I now have NGK Iridium IXs, and I recall that all six gaps were still perfect after about the same mileage.
FWIW...
#8
Originally Posted by d00df00d
The only other manufacturer that everyone talks about Maximas not liking is Bosch. Plenty of people use Densos...
apparently they shouldn't be though?
Granted, it's not the most conclusive 'study'.. I guess my line of thinking is, you replace them so infrequently and considering the # of cars I've heard about that have problems with non-OEM plugs.. why bother putting in a plug that the car might not like, just to save a little bit of money.
Originally Posted by platinum03SE
what did they come stock with
NGK Plats
#9
You still want Denso Iridiums for the best possible performance, just like how you want soft summer tires for the best possible handling. This article just shows that, like that kind of tire, Denso Iridiums make compromises that will totally offset the gains for most people.
#18
Originally Posted by NmexMAX
I still have one of the highest auto dynos, so, no tard here
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