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Spark Plugs: Platinum or Iridium for F/I ??

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Old 05-01-2007, 09:55 PM
  #21  
Triple8Sol
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Definitely not going to go 2 steps colder. No need for that.
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Old 05-02-2007, 06:41 PM
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vqturbotec
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do you have a stock motor if not what is the compression ratio of your engine
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Old 05-02-2007, 10:44 PM
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Triple8Sol
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Stock block
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Old 05-03-2007, 07:32 AM
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vqturbotec
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i would run 1 step colder plugs (ngk iridium ) and gap them down to .025 and maybe spend a little tune time just to make sure it dosent detionate in the high revs
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Old 06-24-2008, 02:58 PM
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bringing back an old thread if i can.... anyone know WHICH copper plugs to use?
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Old 06-24-2008, 05:17 PM
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The only issue I had with iridium is they break easily when re-gaping.
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Old 06-24-2008, 06:15 PM
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i have iridium
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Old 06-24-2008, 09:42 PM
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Im going to be getting new plugs myself this coming week or so...
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Old 06-24-2008, 09:52 PM
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IIRC, the platinum puck on the platinum plugs can come off from the increased pressure and cause damage.
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Old 06-24-2008, 09:54 PM
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Originally Posted by Triple8Sol
I thought iridiums were too sensitive or fragile to gap?
To gap bigger, they are fragile and you can NOT gap them larger in my experiences.

Closing the gap just takes some pressure on the arm to close the gap up. This does not require pressure on the iridium part.
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Old 06-25-2008, 12:06 AM
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silver nismo
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Originally Posted by Triple8Sol
Definitely not going to go 2 steps colder. No need for that.
And why is that???
The 1 step and 2 step are the same how ever you can have more advanced timing on the 2 step. any other wise reason why u wouldn't go for something that is colder and might protect your engine more???????
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Old 06-25-2008, 12:07 AM
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As for the Plat. they r fine iridium r better its as simple as this :-)
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Old 06-25-2008, 04:54 AM
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Originally Posted by TurboSam
bringing back an old thread if i can.... anyone know WHICH copper plugs to use?
???
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Old 06-25-2008, 07:34 AM
  #34  
NETSHARK
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Originally Posted by silver nismo
And why is that???
The 1 step and 2 step are the same how ever you can have more advanced timing on the 2 step. any other wise reason why u wouldn't go for something that is colder and might protect your engine more???????
+1 i want to know why please ? BTW we live in the Oven Side of the World don`t ever compare our temperature in the summer to any other part of the world
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Old 06-26-2008, 08:16 AM
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What are you guys closing the gap to??
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Old 06-26-2008, 09:01 AM
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Originally Posted by Jay'Z
What are you guys closing the gap to??
+1 I have been using the same iridium plugs for the past 2 years without any problems and they where never gapped. I was told they are too sensitive and where already pre gapped to the correct specs. Also when should the plugs be replaced?
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Old 06-26-2008, 09:59 AM
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Id replace my plugs about every 30k miles.. But if im correct my iridiums came with a .045 gap or something close to that..
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Old 06-26-2008, 11:01 AM
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I had to close the gap when I ran Nitrous and I broke a couple of the arms. I thought the arms were Iridium or at least a weaker material becuase the plat and copper plugs never broke on me.
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Old 06-26-2008, 12:41 PM
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Originally Posted by TurboSam
bringing back an old thread if i can.... anyone know WHICH copper plugs to use?

NGK LFR6A-11
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Old 06-26-2008, 01:30 PM
  #40  
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What gap is good on the coppers? are those 1 step colder? is .025 safe?
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