sorry forgot befor pic this best I could do
http://i177.photobucket.com/albums/w220/dustypowers/Picture218.jpg
http://i177.photobucket.com/albums/w220/dustypowers/Picture021.jpg
http://i177.photobucket.com/albums/w220/dustypowers/Picture022.jpg
http://i177.photobucket.com/albums/w220/dustypowers/Picture023.jpg
http://i177.photobucket.com/albums/w220/dustypowers/Picture025-1.jpg
shined up nice

That looks great, but keep in mind that radiators are painted black because they dissipate heat much better when black.

Any special type of paint for aluminum radiators?

That looks great, but keep in mind that radiators are painted black because they dissipate heat much better when black.
Mine was never black it was brushed Griffin

That looks great, but keep in mind that radiators are painted black because they dissipate heat much better when black.

I'm not going to argue, but I would like to know how. Black absorbs more heat then white or polished, but thats from outside forces (IE the sun). How would the color of the radiator effect the dissipation of heat?

O and that looks very cool Dusty

I'm not going to argue, but I would like to know how. Black absorbs more heat then white or polished, but thats from outside forces (IE the sun). How would the color of the radiator effect the dissipation of heat?

O and that looks very cool Dusty
Thanks it was alote of work and alote of bathing afterwards

nice job dust...

I'm not going to argue, but I would like to know how. Black absorbs more heat then white or polished, but thats from outside forces (IE the sun). How would the color of the radiator effect the dissipation of heat?

O and that looks very cool DustyEastwood has special black radiator paint that actually dissipates heat. Same as some coating companies that sell intake manifold coatings in black that do the same thing.

http://www.rsperformancecoatings.com/rs_services.html

Go to heat reduction coatings and read.

http://www.processcoatings.com/techinfo_inmanifold.html


Jake

Very nicely done!!! From my understanding, the black ABSORBS the heat much like if you wear a black shirt on a very hot day you seem to be hotter. When it absorbs this heat, it transfers it to the fluid in the radiator, which is cooled by fans and just air from driving. The aluminum tends to deflect the heat back to its source (ie the engine). Probably not alot of difference in heat, but there could be some.

I'm not going to argue, but I would like to know how. Black absorbs more heat then white or polished, but thats from outside forces (IE the sun). How would the color of the radiator effect the dissipation of heat?

O and that looks very cool Dusty

Quick background on thermal radiation. The color black has the ability to radiate heat better than other colors. It's called emissivity. Radiative heat transfer occurs between two objects of different temperature, with heat going from the hotter object to the colder one. The greater the temperature delta, the greater the rate of heat transfer is going to occur, so much so that radiation varies with the fourth power of temperature, and vice versa. For instance if you went from a temperature difference of 2° to a difference of 6°; 6°-2°=4°, then your radiative heat transfer would jump by a factor of 256 (4 to the fourth power). So your temperature difference tripled, but your radiative heat transfer jumped by a factor of 256!

In an underhood environment though, convection heat transfer is going to dominate the total dissipation with the amount of air flowing over the fins. Particularly since the radiator is designed to dissipate heat from the fins (which are meant to provide the maximum amount of surface area for convective cooling), not from the external surfaces of the side tanks (which makes the name "radiator" somewhat of a misnomer IMO). So intuitively, I wouldn't think the color of the radiator would make a significant difference on it's ability to dissipate heat. But in the absence of real data, obviously I could be wrong.

If you were in space (with no convection medium) all you'd have is radiation. At which point you'd definitely want the color black for maximum dissipation capability.

Eastwood has special black radiator paint that actually dissipates heat. Same as some coating companies that sell intake manifold coatings in black that do the same thing.

http://www.rsperformancecoatings.com/rs_services.html

Go to heat reduction coatings and read.

http://www.processcoatings.com/techinfo_inmanifold.html


Jake

Hmm...I'd be interested to see some data to show that any significant additional cooling ability was gained.

Very nicely done!!! From my understanding, the black ABSORBS the heat much like if you wear a black shirt on a very hot day you seem to be hotter. When it absorbs this heat, it transfers it to the fluid in the radiator, which is cooled by fans and just air from driving. The aluminum tends to deflect the heat back to its source (ie the engine). Probably not alot of difference in heat, but there could be some.

Black does absorb heat, but it'll also radiate heat better than other colors. The reason you feel hotter with a black T-shirt is because the source of the radiation (the sun) is WAAAAAAAY hotter than you are. On a cold night, you'd probably feel colder if you were wearing a black T-shirt (all other things being equal) since your body would be at a higher temperature than the environment.

If the radiator is hotter than the surrounding underhood environment, it'll radiate heat, not absorb it.

Wow that came out great!!! Looks like a mirror!!

Black does radiate heat the best for a color. BUT not having any coating/paint will dissipate heat BEST because there is no barrier to keep in the heat.

Hmm...I'd be interested to see some data to show that any significant additional cooling ability was gained.
Yah me too. Ive noticed most of the EngineMaster contestants that have won had their manifolds coated black on the outside. But for the person looking to make an aluminum radiator look as stock as possible I'm curious if it would work without a detrimental affect on radiator performance.

Jake

All I know is it was dirty I was bored and now it is shinny

Wow that came out great!!! Looks like a mirror!!

Black does radiate heat the best for a color. BUT not having any coating/paint will dissipate heat BEST because there is no barrier to keep in the heat.

I'm with you any paint you put on the metal is an insulator. The only reason you paint most radiators is to prevent or slow down the corrosion mainly on copper or brass, it still hurts heat transfer.

Black asorbs thermal radiation from a source such as the sun better. That is why black cars get hotter. If you place both a white car and a black car in the shade both cars will be the same temperature because the temp change will be by air temp differences only, or condution.
Place a white painted peice of metal and a black painted peice of metal in the oven with a cookie sheet below them to block the thermal radiation, they will both gain temp at the same rate because the heat is from conduction.

Nice job on the radiator Dusty. You gave me inspiration to get on the ball and polish mine. Is that a Griffin you have, if so is it the epoxy reinforced one? I know your not supposed to weld on those if they have epoxy and see you have brackets welded on it. If you can, I sure wish I would have done that instead of making brackets to hold mine in place using the old brackets and rubbers bushings.

Ahhhhh, see I learned something!!! I feel much smarter already from joining this forum!!! ;)

So when I cook my T'giving Turkey this year...do I place the shiny side out or in, when I wrap the thing in tinfoil to cook it?

Dusty nice job on the polishing job... Looks real good

Dusty...the product of boredom looks really shiny...great job, but now if you want it to stay that way find something good to protect it. Without that oxidation layer it will be more likely to oxidize right back like it was before you started.

Dusty...the product of boredom looks really shiny...great job, but now if you want it to stay that way find something good to protect it. Without that oxidation layer it will be more likely to oxidize right back like it was before you started.
I was thinking of clearing it what r your thoughts

All I know is it was dirty I was bored and now it is shinny

That is the understatement of the century!!! That is one great job!!

So when I cook my T'giving Turkey this year...do I place the shiny side out or in, when I wrap the thing in tinfoil to cook it?

Paint your tinfoil black and the turkey will be done by Halloween.:)

And, never paint your tinfoil hat black because your thoughtwaves are absorbed into the black and out for everyone to read. :rolleyes:

Or, not.

I was thinking of clearing it what r your thoughts
What Should I coat the Radiator With And Not Lose My Shine

Dusty, a high quality clear coat will be the best maintainance free coating, but will not be quite as bright as the freshly polished aluminum. To keep it the brightest, simply going over it with a rag with liquid metal polish as needed will keep the shine.
I polished my 79Z turbine wheels to a mirror and every now and then a quick wipe down with polish keeps them shiny. Keeping wax on the polished metal will protect from oxidation, but I don't know how wax would hold up to the heat.

I polish different kinds of parts and metals every stinking weekday. At least the metal dust washes off easily.

that radiator looks great. i am going to have one in my 79transam also. i definitly would not paint it...i prefer the look of the aluminum. great work.

Dusty, a high quality clear coat will be the best maintainance free coating, but will not be quite as bright as the freshly polished aluminum. To keep it the brightest, simply going over it with a rag with liquid metal polish as needed will keep the shine.
I polished my 79Z turbine wheels to a mirror and every now and then a quick wipe down with polish keeps them shiny. Keeping wax on the polished metal will protect from oxidation, but I don't know how wax would hold up to the heat.

I polish different kinds of parts and metals every stinking weekday. At least the metal dust washes off easily.
Yeah I think i will clear it May not be as shiny but it will stay cleaner

that radiator looks great. i am going to have one in my 79transam also. i definitly would not paint it...i prefer the look of the aluminum. great work.
Thanks