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Paint aluminium intake?

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Old Feb 15, 2011 | 10:00 AM
  #1  
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Paint aluminium intake?

Hey,
I had a quick question. I'm detailing my engine compartment right now and I have an aftermarket intake. Its kinda crappy looking and the only way I could really clean it up would be to take it off and sand blast it.

Is it possible to paint over the aluminum with the engine color? Would I need a primer? The engine has already been degreased its just dirty looking and I dont think it will look good with a yucky intake on top. Any thoughts?
 
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Old Feb 15, 2011 | 12:21 PM
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The better paint you put on it the longer it will last; a good 2 part epoxy would be the best if you got the bucks to spend on the paint.

You can get by with rattle can paint but it doesn't stand up to gas as good as the 2 part will.

If you go this route, the paint shop can tell you what surface prep you need to do; you should be able to get one you can spray without primer since you're not trying to cover another color.
 
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Old Feb 15, 2011 | 02:43 PM
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i have always went with sand blasting just make sure you get all the sand out of the orifices or tape off any of the openings and then i clear coated them it looks sharp and makes for a easy clean up
 
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Old Feb 15, 2011 | 03:12 PM
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I would sand blast it, but i dont want to take it off. I bought this real good engine paint from Eastwood that I can brush on. I was wondering it the paint will stick or do I need to primer it first?
 
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Old Feb 15, 2011 | 03:15 PM
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I would not "sand blast" per se, but use walnut shell or plastic beads for the blasting, as the aluminum is soft and the "sand" could damage it. Once cleaned, I would prep/powder coat it Ford blue or any color you desire. Like this and the valve covers:




HTH,
Gene
 
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Old Feb 15, 2011 | 03:18 PM
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Well that would require removing the intake. I'm looking for a solution with leaving it intact. I did not pull my motor. I'm just trying to give it a nice clean look. Not going for the "show" look.
 
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Old Feb 15, 2011 | 03:21 PM
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I would prime first. Look for a primer for aluminum like a self etching primer or epoxy.
 
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Old Feb 15, 2011 | 03:23 PM
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Ok...I'll post some pics when I complete it Thanks for the input.
 
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Old Feb 15, 2011 | 03:40 PM
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Originally Posted by HiddenForFortyYears
I would prime first. Look for a primer for aluminum like a self etching primer or epoxy.
Exactly and I believe your referring to "Zinc Chromate" primer. I have used it and it works well.
 
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Old Feb 15, 2011 | 03:43 PM
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Just talked to the local Auto Body shop they suggested POR-20 Aluminum paint. It is heat resistant and will make the intake look like new.They told me no primer or sanding is necessary. I hope they are right. Anyone use this stuff before?
 
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Old Feb 15, 2011 | 03:53 PM
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Originally Posted by PA74F250
Exactly and I believe your referring to "Zinc Chromate" primer. I have used it and it works well.
If you use this primer, use a respirator and plenty of ventalation. This is the same stuff we use on aircraft and according to the safty sheet on it, it can cause heavy metal poisoning.
 
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Old Feb 15, 2011 | 05:18 PM
  #12  
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Originally Posted by 68horses
I would not "sand blast" per se, but use walnut shell or plastic beads for the blasting, as the aluminum is soft and the "sand" could damage it. Once cleaned, I would prep/powder coat it Ford blue or any color you desire. Like this and the valve covers:




HTH,
Gene
nice headers
 
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Old Feb 15, 2011 | 05:48 PM
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Originally Posted by BigBlack71
Just talked to the local Auto Body shop they suggested POR-20 Aluminum paint. It is heat resistant and will make the intake look like new.They told me no primer or sanding is necessary. I hope they are right. Anyone use this stuff before?
Forgot about the POR products, they are great. Make sure to use gloves (you get it on your hands and it will be there for days) and don't get it on anything you don't want it on. That stuff wont come off once it dries.
 
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