Hey I will keep it short and sweet, I know I probably need a two step colder spark plug, so with that said. What spark plug is recommended for the comptech SC in temperature of 80 degrees and above. I'll need part no as well. Platinum? Iridium? Or Copper?

 

NGK iridium BKR8EIX part # 2668

It's what I just picked up at advance auto for my comptech kit. They were about $30.

 

Also, this thread provides more options

https://www.s2ki.com/s2000/topic/291...d-spark-plugs/

 

NGK iridium BKR8EIX part # 2668 are the ones you want...try the stock .030 gap first. Also what kind of power are you making and on what type of fuel?

Also here is my thread
https://www.s2ki.com/s2000/topic/877325-spark-blow-out/

When we talk about Iridium 7's, 8's or 9's we are normally talking about these three plugs here:
http://www.evans-tuning.com/ecommerc...nition?cat=182

Also here is a good email sent to me from Evan's Tuning about my issue.

"Iridiums are superior to copper in every way. I have never seen a copper core
plug out perform an iridium. I can tell you that going to a stock heat range
plug will make the engine more knock sensitive. All the tuning I have done with
FlashPro shows higher knock counts with the stock heat range plugs, even N/A.
There is not a resistor style spark plug in the colder heat ranges, which is the
reason for needing the iridiums. You may be experiencing misfiring issues from
the gas you are using attacking the plugs and breaking them down. Iridium is
usually much better in comparison than copper with race gas as well (self cleans
better)."

 

2668 vote here too

 

2668 gapped to 0.040"

 

#2668 as well, advanced sells em for $7 each

 

Just picked up a set of 2668's yesterday

 

anyone have any input on #5311.

i just got a free set in the mail, trying to see if i should use these when installing my ctsc

 

bump