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Old 02-09-2006, 10:38 AM
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Lean or Rich

I had my Sanderson headers ceramic coated two years ago and it has burned off at different places like the tight radius of inner two tubes and where all the tubes collect. The car has dual edelbrock 500's that have been leaned out after I got the car. I have been told that only running rich will cause this and I have been told that running lean will cause it. I have been told that you can't run lean with dual quads. The accelerator picks up the front carb about 1/3 through the stroke. Plugs look to a novices eyes like they are lean and not rich. I would love to find someone in my area that can "sniff" the exhaust and adjust the carbs to the proper mixture. I am sick about the headers conditions because I run open sides and they show. They looked almost as nice as my polished aluminum when I put them on. Opinions?????
Thanks
Tom

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Old 02-09-2006, 10:57 AM
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Might be timing, might be a bad coat.
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Old 02-09-2006, 11:45 AM
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Lean conditions and retarded timing will cause some areas of headers to get hot. I have not seen a rich condition cause the headers to burn the coatings off.
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Old 02-09-2006, 11:51 AM
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Agreed. Lean mixtures burn hotter.
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