Quick Opinions on Spark Plugs please - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-30-2005, 04:26 PM   #11
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Quote:
Originally Posted by BillBoost37
Not hurt. I've got them in the 95. Changed the 97 out to copper once I noticed temps rising. Makes a difference, so far it hasn't hurt anything though.
OK, I gotcha....that is cool. BTW I got the leaves done today with the mower, the mulch deck does a decent job on them. I need a vacation however....I have 2 weeks left. I am definitely going to use them soon.
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Old 10-30-2005, 09:12 PM   #12
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Quote:
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Originally Posted by jr's3800
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Originally Posted by CFoote
Why not Iridiums? I had a set installed and 20k later no problems??
Blown 3800'* like copper plugs
Get out JR! Really? How could an AC Delco part hurt the engine? Shame shame GM!!!
do they put irridiums in the l67 from the factory? I'm not sure they do. anyhew, as an l36, you're just fine with iridiums, and they'll last a good long while in your car...
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Old 10-31-2005, 01:50 AM   #13
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Yes, irridiums are installed from the factory, but the direction most of us go is Copper after dropping at least one pulley size. Platinum is a no-no with forced induction of any kind (turbo, SC, Nitrous). Irridium may be ok stock, but as a general rule of thumb, copper is best for Forced Induction.
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Old 10-31-2005, 01:59 AM   #14
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Quote:
Originally Posted by willwren
Yes, irridiums are installed from the factory, but the direction most of us go is Copper after dropping at least one pulley size. Platinum is a no-no with forced induction of any kind (turbo, SC, Nitrous). Irridium may be ok stock, but as a general rule of thumb, copper is best for Forced Induction.
This may be a stupid question, but... why is platinum a bad thing for forced induction?
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Old 10-31-2005, 02:08 AM   #15
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Read Techinfo. It'* all explained there if I recall.
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Old 10-31-2005, 02:23 AM   #16
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Right... Techinfo...

Oh, it'* a heat thing. Melting temp of platinum is less than that of copper. Very interesting.

I always forget about Techinfo..
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Old 11-05-2005, 08:30 PM   #17
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So for NA cars, should we run irridiums? What gives the best results?
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Old 11-05-2005, 11:34 PM   #18
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Autolights here... + they are so cheep that you can afford to change them a lot.
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Old 11-06-2005, 12:20 AM   #19
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I use AL 104s
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Old 11-06-2005, 08:13 AM   #20
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But you should use copper plugs in supercharged cars, right?
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