Trying something new: - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-08-2006, 06:04 PM   #21
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Quote:
Originally Posted by willwren
This is NOT spray. It'* an applicator similar to PVC glue.
So you paint it on with a brush? Sorry I just can't picture this?
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Old 05-08-2006, 06:09 PM   #22
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This is sorta exciting. I do recall 1995SSEi(I think his name is Joe) saying something about heat soaking the engine by insulation the exhaust pipes too much.... I guess we'll find out. Subscribed!
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Old 05-08-2006, 06:16 PM   #23
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Quote:
Originally Posted by OLDsman105
Quote:
Originally Posted by willwren
This is NOT spray. It'* an applicator similar to PVC glue.
So you paint it on with a brush? Sorry I just can't picture this?
Ever done any PVC gluing? Same type of applicator. I assume, anyway. I'll know on Thursday when it gets here.
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Old 05-08-2006, 06:29 PM   #24
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I'm very interested in your results too! I want to clean up my manifolds, but I won't be painting them like I did before.
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Old 05-08-2006, 07:15 PM   #25
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Quote:
Originally Posted by willwren

It'll be here Tuesday.
Quote:
Originally Posted by willwren
Thursday when it gets here.


Oh great... Now he'* making us wait it out in suspense.

PVC glue type applicator? That sounds like it will take a painful amount of time to apply.
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Old 05-08-2006, 07:46 PM   #26
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Actually, I think it'll be quite easy.

I tracked the shipment. It'll be Thursday.
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Old 05-08-2006, 08:42 PM   #27
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Sounds very interesting....Is it too much to ask you to document the process and findings? It seems like you're the type in the first place; I'm just respectfully requesting you to do so.

-IKZ
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Old 05-08-2006, 10:40 PM   #28
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I will take temps before and after at warm idle. 1" above the front collector. The process? Wire brush off the loose scale, and paint it on.
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Old 05-09-2006, 12:04 AM   #29
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This seems strange to me. I do not understand why this coating would be black. Black objects have higher emissivity and therefore radiate more heat. I would think you would want a shiny light colored coating if you don't want to radiate heat out from the headers. I even remember being told that this is why stainless exhaust is good; the shiny surface finish radiates less heat, keeping the exhaust gas hot and flowing at higher velocities (as willwren said). I wonder what they used to measure the temperature; some infrared temperature guns are quite sensitive to the surface type and can read different for black vs shiny surface. Although I thought most tend to read too low for shiny surfaces...
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Old 05-09-2006, 12:12 AM   #30
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Chinski, do an internet search on 'black body'.

You want your exhaust to hold heat NEAR the heads to increase velocity. Shiny surfaces are generally only an issue where LIGHT is involved. Not necessarily heat.
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