In my future set up im thinking of using the denso iridium plugs i bought about 2 months ago with msd 8.5mm distributor wires. Are these good cold plugs or does anyone recommend different ones. Thanks

 

Sparkplug have heat ranges on them, without posting exactly what the head range is, we cant tell you what if the plug is cold enough. I have always used standard ngk's heat range 6 or 7 with no problems. I replace plugs every 5,000 miles so iridium one's will get expensive even though they last longer. Your better off with standard ngk plugs: cheaper, easiest to get and will make the same power.

 

I recommend OEM wires always. Nothing fits as good or works as well. I'll put an OEM wire up against anything.

For the plugs, the NGK iridium plugs are of better quality and they are cheaper as well. I can get them for about 7bucks a plug. I highly recommend them. We have a 450+hp SR running on the same plugs for almost a year now. Proof enough for me!


[Modified by VaporTrail, 1:10 AM 3/13/2003]

 

Go with Denso IK27 or IK31. They are plenty cold.

 

I dont like the iridiums myself. I have seen the ground strap break on them 2 times on a wrx and destroy the motor. I like the 1.52 a plug ngk 7's and 8's. especially since i change mine weekly on my street car.