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anodizing intercoolers

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Old 05-01-2007 | 04:24 PM
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Default anodizing intercoolers

can it be done? i want to anno mine black to be less noticable.
Old 05-02-2007 | 02:47 AM
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????
Old 05-02-2007 | 03:02 AM
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I've seen a member on here paint theirs black. He claimed it didn't affect the function of the cooler.
Old 05-02-2007 | 10:58 AM
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it can b done. a regular type paint can b used. i wouldnt recommend powdercoating tho.
Old 05-02-2007 | 11:05 AM
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anodizing would have the least effect on the thermal diffusion properties of aluminum, as an oxide layer forms on aluminum already when its bare. I wouldn't be surprised if some didn't come anodized already
Old 05-02-2007 | 06:27 PM
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redlude's got it right, if you're going to change the color, anodized would be the best way to go b/c it'd have the least effect on the IC's thermal properties...if you painted/powder coated it, it'd trap more heat in, which is the opposite of what an IC is desinged for.
Old 05-02-2007 | 10:01 PM
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doesnt Nitrouz has his FMIC anodized?
Old 05-03-2007 | 06:48 AM
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Only anodize/PC the endtanks. It is not suggested to alter the fins themselves.
Old 05-03-2007 | 09:17 AM
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eastwood co. sells radiator paint? this may be a cheap option that doesnt really effect the cooling abilities of the I/C.
Old 05-03-2007 | 10:50 AM
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Originally Posted by scotts300
Only anodize/PC the endtanks. It is not suggested to alter the fins themselves.
why is that? whether they are anodized or not, the oxide layer will form so it the thermal properties will not be significantly different
Old 05-03-2007 | 01:36 PM
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Originally Posted by redlude97
why is that? whether they are anodized or not, the oxide layer will form so it the thermal properties will not be significantly different
It's all about how you define "significantly different". Even Bell eludes to this w/r to paint or powder coat: http://www.bellintercoolers.com/pages/techFAQ.html

Yes, aluminum in the atmosphere thermodynamically forms an oxide skin of alumina. When you anodize, you a) increase the thickness of the skin and two, infiltrate some of the parent aluminum. The outer layer is porous, giving room for the dye for coloring, with aluminum hydrate formed on the outer most surface. The more you grow the anodized/oxide layer and the hydrate layer, the longer the diffusion path to the parent aluminum which takes away from your thermal efficiency. Sure, these amounts are small, as the coatings are 1/2-2 mils in thickness; however, air:air intercoolers are already relatively inefficient, I'll take every percent in efficiency that I can.

Most people PC or paint, and don't go through the trouble of anodizing a huge intercooler, which is even worse if you do the through-thickness of the core. Intercooler efficiency can be easily measured before and after anodizing/PC'ing/painting. I have performed many IC efficiency calculations on my own ride (unpainted/coated), you just need two TCs with readouts.
Old 05-03-2007 | 02:04 PM
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Originally Posted by scotts300
It's all about how you define "significantly different". Even Bell eludes to this w/r to paint or powder coat: http://www.bellintercoolers.com/pages/techFAQ.html

Yes, aluminum in the atmosphere thermodynamically forms an oxide skin of alumina. When you anodize, you a) increase the thickness of the skin and two, infiltrate some of the parent aluminum. The outer layer is porous, giving room for the dye for coloring, with aluminum hydrate formed on the outer most surface. The more you grow the anodized/oxide layer and the hydrate layer, the longer the diffusion path to the parent aluminum which takes away from your thermal efficiency. Sure, these amounts are small, as the coatings are 1/2-2 mils in thickness; however, air:air intercoolers are already relatively inefficient, I'll take every percent in efficiency that I can.

Most people PC or paint, and don't go through the trouble of anodizing a huge intercooler, which is even worse if you do the through-thickness of the core. Intercooler efficiency can be easily measured before and after anodizing/PC'ing/painting. I have performed many IC efficiency calculations on my own ride (unpainted/coated), you just need two TCs with readouts.
Yes, but anodizing would be the best option for the OP, who wants a black intercooler, Garrett recommends either anodizing or painting
http://www.turbobygarrett.com/turbob...nter/faqs.html
Old 05-03-2007 | 02:07 PM
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Originally Posted by redlude97
Yes, but anodizing would be the best option for the OP, who wants a black intercooler, Garrett recommends either anodizing or painting
http://www.turbobygarrett.com/turbob...nter/faqs.html
Best option would be to leave it. Gun-to-my-head, I agree that anodizing being is the best alternative, and leaving the core, as 2nd best. Third would be anodizing the whole thing, core and all, "with negligible loss in performance", a la Garrett...
Old 05-03-2007 | 02:18 PM
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annodizing shouldnt affect the heat transfer like paint or powdercoating. this is something i rele plan on doing. cant you anno peices black?????
Old 05-03-2007 | 02:36 PM
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Originally Posted by scotts300
Best option would be to leave it. Gun-to-my-head, I agree that anodizing being is the best alternative, and leaving the core, as 2nd best. Third would be anodizing the whole thing, core and all, "with negligible loss in performance", a la Garrett...
I agree the best option is no coating at all, but the OP asked how to get it black, and anodizing would be the best option
Old 05-03-2007 | 02:36 PM
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Originally Posted by Bottled Water
annodizing shouldnt affect the heat transfer like paint or powdercoating. this is something i rele plan on doing. cant you anno peices black?????
Read my post above. It certainly has SOME affect.
Old 05-03-2007 | 03:00 PM
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If I am not mistaken you can not anodize cast aluminum but you can anodize billit or sheet metal intercoolers such as those from Bell Intercoolers. This is what Bell Intercoolers told me at least.
Old 05-03-2007 | 03:40 PM
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I have seen cast aluminum annodized. My bicycle cranks are annodized gold and they are cast aluminum.

JET
Old 05-03-2007 | 03:54 PM
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I wonder if it considered plated? I remember there is a way of coloring it but I don't think it is called anodizing. Could be wrong though


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