Clear coat on metal

DScott · Jun 20, 2008

I am looking for a clear coat to use on bare metal surfaces such as carbs, magneto bodies, axle shafts and etc. I have tried some of the spray can poly clear coats but I would like something more solvent resistant. Aoso, some of the clears out of spray cans kind of turn yellow after awhile. So what is a good clear coat to use in these situations?

Rod (NH) · Jun 20, 2008

Look into PPG's DAU75 acrylic urethane clear. I have had very good luck in the past using that on a bare aluminum valve cover on a Honda 4 cyl engine, given the proper cleaning and pretreatment with the recommended PPG chemicals. I have not tried it on bare steel.

I'll give you a link to the tech data sheet for reference. I have been unable to find a way to direct link to the pdf file on the new PPG site. Instead, the link should get you a dialog box to either download or save the file to disk. Clicking on download will show the data sheet for DAU75, assuming you have the adobe acrobat reader software on your computer. The clear must be catalized with DXR80 urethane hardener.

Here's the link: <a href="https://buyat.ppg.com/refinishProductCatalog/ServeFile.ashx?FileID=949701fb-092b-481e-8af4-81f35da72b7c">DAU75</a>

Rod

Dick L · Jun 21, 2008

How much do you want to spend?

This is a little spendy but tuff stuff.
Read About It Here

RandyB(MI) · Jun 21, 2008

I believe any of the catylized urethane clears will do what you are asking. The manufacturer will not recommend it but sometimes you have to bend the rules.

GordoSD · Jun 27, 2008

You might look into the CastBlast line of paints. They are available in regular and hi-temp. It's a "grey" paint formulated to look like cast iron. It's what the high end auto restorers use on those 150k restorations.

Gordo

Anonymous-0 · Jun 28, 2008

No clear will adhere to bare metal as well as primer/paint. The problem with using catalyzed clear is that WHEN(not if) it fails, it is difficult to remove.

DickL · Jun 29, 2008

I know that the expurts here skoff at the Eastwood products I have posted but I have had good results using them. You can by a super gloss clear powder coat that will last as good as any color.
I painted two tractors with Rural King paint at the end of last summer. One I used the Eastwood clear coat on and the other I didn't. All my tractors set out side year around as well as both of these. There is a big difference already.
Clear Coat

Clear coat on metal

DScott

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Rod (NH)

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Dick L

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RandyB(MI)

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GordoSD

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Anonymous-0

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DickL

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