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Old Jul 2, 2003 | 10:16 AM
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Stock SC400's come with Denzo Iridium plugs right?

I've just heard that platinum or iridium plugs are no good if you are running richer than 14.7:1(stoich) since they tend to foul out(permanently) and it cannot be cleaned.

what are you Turbo SC guys using for your spark plugs? iridium, copper, or platinum? does it even matter?

thanks.
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Old Jul 2, 2003 | 09:43 PM
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I might be wrong ( I usually am) but I thought only the newer 97+ SC's came with Denso Iridiums.
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Old Jul 3, 2003 | 10:22 AM
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yes you're right, the 97+ came with those
my 95 came with some Denso, forgot which model tho.
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Old Jul 3, 2003 | 12:06 PM
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Turbo guys generally use NGK 3330s BPR7ES? (i think) or 6097s, Or Denso Iridiums IK22. The Iridiums are around $12 each from Horsepower Freaks. They carry the others as well. The 3330s are great for warding off detonation under boost and don't misfire under boost but idle a little poorly. The 6097s idle a little better - haven't tried them. The Iridiums are decent and don't need changed nearly as often. Putting these in this weekend.
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Old Jul 3, 2003 | 02:42 PM
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Originally posted by SC300T
Turbo guys generally use NGK 3330s BPR7ES? (i think) or 6097s, Or Denso Iridiums IK22. The Iridiums are around $12 each from Horsepower Freaks. They carry the others as well. The 3330s are great for warding off detonation under boost and don't misfire under boost but idle a little poorly. The 6097s idle a little better - haven't tried them. The Iridiums are decent and don't need changed nearly as often. Putting these in this weekend.
exactly the info I was looking for.
thanks dude
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Old Jul 3, 2003 | 02:55 PM
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What spark plugs are ideal for the SC400?
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Old Jul 3, 2003 | 02:55 PM
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I have the Denso Iridiums in my SC4, seems to run about the same as the Platinums it came with, then again there's no boost...
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Old Jul 3, 2003 | 03:21 PM
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i need the plugs for boosting.....
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Old Jul 3, 2003 | 03:57 PM
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i need the plugs for boosting.....
Interesting. Whatcha doin?
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Old Jul 3, 2003 | 04:38 PM
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can't say...... sworn to secrecy... already said too much..

Last edited by VSsc400; Jul 3, 2003 at 04:48 PM.
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Old Jul 4, 2003 | 03:05 PM
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Gotta love secret projects. If you told me would you have to kill me?
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Old Jul 4, 2003 | 03:37 PM
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he he he.... no killing..... but still can't say..... but may make all of V8 guys alot happier..
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