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Old 10-04-2009, 08:19 PM   #11
VettezukiVettezuki is offline
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Originally Posted by joedls View Post
I would bet that is your octane booster causing that.
Is that plug dead and gone? In other words, should I suspect plugs as the cause of my problem?

Next question, money no object (plugs aren't all that much) what is the best choice for my application? Mid-high compression somewhere in the 11.x:1, all motor.
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Old 10-04-2009, 10:04 PM   #12
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Quote:
Originally Posted by Vettezuki View Post
Is that plug dead and gone? In other words, should I suspect plugs as the cause of my problem?

Next question, money no object (plugs aren't all that much) what is the best choice for my application? Mid-high compression somewhere in the 11.x:1, all motor.
I have NGK TR6's on the Cobra. They've been great so far.
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Old 10-04-2009, 10:44 PM   #13
joedlsjoedls is offline
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Originally Posted by Vettezuki View Post
Is that plug dead and gone? In other words, should I suspect plugs as the cause of my problem?

Next question, money no object (plugs aren't all that much) what is the best choice for my application? Mid-high compression somewhere in the 11.x:1, all motor.
Yes, that orange color is exactly what I've heard others have experienced with octane booster. I don't know what plugs are best for your application.
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Old 10-04-2009, 10:50 PM   #14
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Originally Posted by SeanPlunk View Post
I have NGK TR6's on the Cobra. They've been great so far.
I'm sorry. Your' title and avatar are a little distracting. . .

Thanks for the tip though.
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Old 10-04-2009, 10:53 PM   #15
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Originally Posted by Vettezuki View Post
I'm sorry. Your' title and avatar are a little distracting. . .

Thanks for the tip though.
I hate all of you
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Old 10-04-2009, 11:50 PM   #16
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Originally Posted by Vettezuki View Post
Is that plug dead and gone? In other words, should I suspect plugs as the cause of my problem?

Next question, money no object (plugs aren't all that much) what is the best choice for my application? Mid-high compression somewhere in the 11.x:1, all motor.
I just run regular Autolites in both the Chevelle and the Cobra.
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Old 10-04-2009, 11:54 PM   #17
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I just run regular Autolites in both the Chevelle and the Cobra.
Anything about temp range, etc.?
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Old 10-04-2009, 11:54 PM   #18
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I'm sorry. Your' title and avatar are a little distracting. . .
...... nuf said!
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Old 10-05-2009, 12:07 AM   #19
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Anything about temp range, etc.?
For the Chevelle I'm using the ones for a 1967 427 Covette because it came factory with 12.5:1 compression and they were the only ones I found that didn't protrude too far into the chamber to the point that it hit the piston. On the Cobra I'm running 1 step colder plugs than what came on it stock. I also modify the ground strap by rounding the sharp edges just to be on the safe side. The Cobra is right on the edge of pinging so I don't leave anything to chance.
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Old 10-05-2009, 01:58 AM   #20
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Originally Posted by 94cobra69ss396 View Post
For the Chevelle I'm using the ones for a 1967 427 Covette because it came factory with 12.5:1 compression and they were the only ones I found that didn't protrude too far into the chamber to the point that it hit the piston. On the Cobra I'm running 1 step colder plugs than what came on it stock. I also modify the ground strap by rounding the sharp edges just to be on the safe side. The Cobra is right on the edge of pinging so I don't leave anything to chance.
Do you mean like a gentle de-burring of the strap or an actual rounding of the edges? Also, exactly what problem does that solve?
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