Spark Plug Clarification!
- Thread starter Koz
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Randy Arnold
New member
V6 repalcement plugs
I had an even mix, 3 of each, of NGK and Denso plugs in my '04 V6. I changed the plugs out at 41,000 and wouldn't think twice about running the stock Denso plugs out to 45,000. The NGK plugs had opened up to a gap of .052" and the Densos were at .045" or just .001" over the starting gap if they were gapped correctly in the begining. They were holding up much better than the NGK's in my application.
I had an even mix, 3 of each, of NGK and Denso plugs in my '04 V6. I changed the plugs out at 41,000 and wouldn't think twice about running the stock Denso plugs out to 45,000. The NGK plugs had opened up to a gap of .052" and the Densos were at .045" or just .001" over the starting gap if they were gapped correctly in the begining. They were holding up much better than the NGK's in my application.
Koz
New member
Re: V6 repalcement plugs
I've had 50K miles on a Toyota 3.4 V6 with 3 NGKs/3 Denso's and the NGKs looked new and the Denso's looked about half used. I have heard this from most all who have experienced this. This would lead me to believe the NGKs are much better. What may have happened in your case, the gap may have not been right on the NGKs when installed.
Koz
Randy Arnold said:
I've had 50K miles on a Toyota 3.4 V6 with 3 NGKs/3 Denso's and the NGKs looked new and the Denso's looked about half used. I have heard this from most all who have experienced this. This would lead me to believe the NGKs are much better. What may have happened in your case, the gap may have not been right on the NGKs when installed.
Koz
Randy Arnold
New member
NGK vs Denso
Koz,
I just read your post on your 3.4 V6. Quite interesting the differences and the similiarities. My plugs were also split evenly the NGK's were all on the drivers side and had noticeable erosion of the electrode in my engine. The Densos looked very good with the exception of some blow through on one insulator which I have seen on many different makes of plugs at different times. Between these 2 particular plugs I'd go with the Densos. If I can get the picture resized to fit as an attachment you could see the differences. Not all plugs are created, equal even under the same brand name, and will burn/erode at different rates because of many different factors. In this case I think the electrode in the NGK's was the factor. We have Denso coil packs in our Toyota's.
Koz,
I just read your post on your 3.4 V6. Quite interesting the differences and the similiarities. My plugs were also split evenly the NGK's were all on the drivers side and had noticeable erosion of the electrode in my engine. The Densos looked very good with the exception of some blow through on one insulator which I have seen on many different makes of plugs at different times. Between these 2 particular plugs I'd go with the Densos. If I can get the picture resized to fit as an attachment you could see the differences. Not all plugs are created, equal even under the same brand name, and will burn/erode at different rates because of many different factors. In this case I think the electrode in the NGK's was the factor. We have Denso coil packs in our Toyota's.
