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where are and how to gap plugs

1.8K views 22 replies 10 participants last post by  slostjoe  
#1 ·
Got my n2o kit in and going with colder plugs, I assume they are behind the engine but I feel like beung ignorant, also I really dont know how to gap, I have to tool, that round half dollar looking thing with a sloaping groove around it and markes and numbers, but what the he** do I do?:xyxnervou
 
#14 ·
02civicsi said:
Aftermarket or OEM why would anyone downgrade from Iridium?
Copper plugs are better for performance. You can buy them in different heat ranges for different applications. They are much, much cheaper than iridium or platinum plugs. I have fouled many sets of copper plugs when adjusting fuel pressure when I had my Mustang with a blower. $1.25 a plug is a lot easier to come up with than $6.25 a plug x 8.
 
#16 ·
RockyMtnFBPSi said:
Not exactly. Iridium is a lot stronger than platinum and can take the spray just fine. Platinum plugs tend to melt under extreme cylinder conditions. I have never seen it happen...but nobody I knew who ran forced induction or nitrous ran platinum plugs.
no... really.. i was right.. that is why he bought COLDER plugs. we arent talking about strength here. lol
 
#18 · (Edited)
Nathen said:
no... really.. i was right.. that is why he bought COLDER plugs. we arent talking about strength here. lol
The question was "why would anyone downgrade from Iridium plugs (in general)?".

You said "because they are too hot for nitrous" which is not exactly true.

If you were answering a different question, there was a miscommunication and I apoloigize.