Spent all Saturday down at REM
Senior Member
Joined: Sep 2000
Posts: 1,636
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From: Olive Branch, MS, Memphis Burb
David,
I'm running the standard TR5 right now and have been since the first part of October. I've been running a #5 pulley since Sept. 5th.
I'll probably go back to the TR5IX for the idle. The idle is not that bad on mine but the TR5IX makes it smoother even though I give up MPH on the big end like the TR6.
I have to tell you that I'm a little leary of the Iridium because I think they might have the same flaw as the Platinum. The small center electrode tip might cause it to retain more heat in the ceramic insulator. This in turn causes it to crack like the plugs that started this thread. I can't say that I've see this happen with a standard plug but of course that doesn't mean it hasn't. I know it is a known problem with the Platinums and now I'm starting to see it in the Iridiums. The standard plug will melt down the center electrode but the Platinums and Iridiums seem to stay intact at the cost of the ceramic insulator. This is the second Iridium that I've seen do this but the jury is still out even though the evidence might be mounting.
I just hope I don't have to pay the price for a smoother idle.
This is just a little food for thought from somebody that has done a ***** load of plug testing at the same track with the conditions and programs documented on the time slips.
I'm running the standard TR5 right now and have been since the first part of October. I've been running a #5 pulley since Sept. 5th.
I'll probably go back to the TR5IX for the idle. The idle is not that bad on mine but the TR5IX makes it smoother even though I give up MPH on the big end like the TR6.
I have to tell you that I'm a little leary of the Iridium because I think they might have the same flaw as the Platinum. The small center electrode tip might cause it to retain more heat in the ceramic insulator. This in turn causes it to crack like the plugs that started this thread. I can't say that I've see this happen with a standard plug but of course that doesn't mean it hasn't. I know it is a known problem with the Platinums and now I'm starting to see it in the Iridiums. The standard plug will melt down the center electrode but the Platinums and Iridiums seem to stay intact at the cost of the ceramic insulator. This is the second Iridium that I've seen do this but the jury is still out even though the evidence might be mounting.
I just hope I don't have to pay the price for a smoother idle.
This is just a little food for thought from somebody that has done a ***** load of plug testing at the same track with the conditions and programs documented on the time slips.
