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How much rwhp is header coating worth?

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Old 04-17-2006, 11:48 AM
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Default How much rwhp is header coating worth?
Anyone have a valid dyno testing comparing coated to uncoated headers without any other variables?

Is there really a performance benefit in getting coated headers as opposed to uncoated.

I am referring to longtubes here.
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Old 04-17-2006, 12:03 PM
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the coating only helps to prevent rust.
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Old 04-17-2006, 05:30 PM
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No, the coating also helps to keep the temperature down in the engine compartment.
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Old 04-17-2006, 06:17 PM
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I am hearing a lot of conflicting ideas here. IDK
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Old 04-17-2006, 06:39 PM
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very little benefit ie anti rust cooler under hood temps. I don't believe it will speed up the exhaust velocity any so I would say little or no power increase but I have no real world data.
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Old 04-17-2006, 07:00 PM
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Wrapping headers is said to improve exhaust velocity and scavaging. Maybe ceramic coating them helps some but to a smaller degree.
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Old 04-18-2006, 09:55 AM
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I doubt you'd see any gains at all.
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Old 04-18-2006, 10:08 AM
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wow...
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Old 04-18-2006, 10:40 AM
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They make your car's engine look good.
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Old 04-18-2006, 10:48 AM
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I highly doubt you'll see any gains from it, but they do keep engine bay temps down and prevent rusting.
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Old 04-18-2006, 11:06 AM
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I saw about 50 RWHP out of it - roughly...

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Old 04-18-2006, 11:33 AM
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it's all about temp. & anti rust .

peace
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Old 04-18-2006, 11:59 AM
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hahaha
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Old 04-18-2006, 12:13 PM
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I GAINED 11.23 hp switching from non-coated lt's to ported manifolds with two heat shields......
true story
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Old 04-18-2006, 12:16 PM
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but really the only thing would be Intake air temp reductions over regular coated headers..how much off i am not sure....maybe 5-10 degrees?
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Old 04-20-2006, 12:00 AM
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It may not be wise to coat stainless steel headers (I am not talking about 409 mild steel).

http://www.z06vette.com/forums/showt...ing#post717611
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