New Spark Plugs - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-28-2004, 12:40 AM   #11
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DO NOT GO FOR THE BOSCH PLATNUM +4! My car misfires badly , esp. when cold, between 20mph and 50mph with them. Ther're ok at higher speeds, but it isn't anything special.

I've heard the Autolihts are good....
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Old 03-28-2004, 01:27 AM   #12
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John, anything bosch is bad news, but platinums in a forced-induction motor is worse. Stick with copper plugs, and irridiums seem to do well, too (although I've never run them).

The NGK'* all do well here in the SSEi'*. Everyone is happy with them, and they provide a bit more 'performance' spark-wise than a standard plug. You need the TR55'*. By next year, you'll be into the TR6'* with me

How'* the job going?
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Old 03-28-2004, 01:29 AM   #13
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im on hold right now till i get get to school and use the air valve spring compressor... I think I'm going with the TR55 plugs... I'm not exactly sure on wires yet...
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Old 03-28-2004, 01:37 AM   #14
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If Taylor Spiro Pros or MSD superconductor'* aren't in the budget, go with stock Delco wires, or BASE Taylors (non-spiro). Stay away from Bosch and Accel wires.
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Old 03-28-2004, 03:34 AM   #15
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All right... Thanks Will... will stock wires be ok to use with NGK'*? Even if I get the MSD coils? I'll look at the Taylor BASE wires, to see if they are in my budget.
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Old 03-28-2004, 03:41 AM   #16
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If you need budget wires, I went to Pep Boys and got the stock replacements made by NASCAR Select (don't know who the parent company is). So far, so good.....
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Old 03-28-2004, 01:31 PM   #17
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MSD coils by themselves don't REQUIRE a wire change, but there is a little to be gained if you do so. Plugs make no difference in wire selection.

The MSD 8224 coil was designed specifically to work with the MSD DIS-4 ignition system, which produces a hotter spark.

The coil ratio of the MSD coils IS slightly different from stock coils, but not enough to make a huge difference. You're still initiated the sequence with the same voltage from your ICM as before, and the different turn ratio of the MSD coil is gaining about 5% or so hotter spark. That'* a guess, btw. I haven't measured my MSD'* in ages. It HELPS a little bit to have a good-quality wire to gain the most out of that, but it'* not required.

The main advantage to going with MSD coils is that they're about the same price as stock replacments, are a LITTLE hotter if you're going to take advantage of that, and they look cool
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