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Powdercoating late NOS mag fan - opinions please
Posted by: Tom Rahochik ()
Date: January 18, 2018 08:29AM

I have a NOS late model magnesium fan I wish to have powder coated with 1000
degree heat coating. Should the fan be glass beaded prior to powder coating
or just coated over as is. All opinions appreciated.....

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Re: Powdercoating late NOS mag fan - opinions please
Posted by: cnicol ()
Date: January 18, 2018 08:36AM

I've always had them blasted before powdercoating. BTW, I've never specified anything other than standard temperature powercoat and it's worked perfectly and held up well. I've probably had 20 done over the years. The fan never gets that hot even after a heat soak.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: Powdercoating late NOS mag fan - opinions please
Posted by: junkman ()
Date: January 18, 2018 08:44AM

Powder coat requires that the part be free of any coatings be powder coated. For this reason, it must be degreased and then glass beaded. Most powder coaters use temperatures no higher than 400°F and the auto ignition temperature of magnesium is approximately 883°F in air. If your powder coater is using 1000 degrees in his oven, he will have a spontaneous combustion problem to deal with when your fan ignites.

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Re: Powdercoating late NOS mag fan - opinions please
Posted by: gnvair ()
Date: January 18, 2018 09:22AM

If you are building a stock class concourse car I would leave it bare as you will never be able to duplicate the patina and coloring if the bare magnesium. Plus it looks cool!

Lee J

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Re: Powdercoating late NOS mag fan - opinions please
Posted by: 2ragtops ()
Date: January 18, 2018 12:46PM

I have powdercoated fans before, most come out pretty nice.

I agree with lee, if your doing a concourse leave it alone.

If not, look around, Eastwood makes several colors in magnesium, aluminum, cast metal etc. that closely resemble a stock fan, and when they get dirty from belt debris and etc. they are easier to clean

Bob Bauer

Show-Me Corvairs

1966 Monza Convert 140 P/G with A/C, plastic wheel with tele-column am-fm posi-traction
1966 Corsa Convert 180 wood wheel tele-column am-fm sport steering posi-traction
1965 Corsa Coupe Crown V8 mounted mid-body temporarily red lined for repair
House Springs, Missouri

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Re: Powdercoating late NOS mag fan - opinions please
Posted by: vairmech ()
Date: January 18, 2018 06:24PM

The only reason NOT to powder coat is if you are going for factory stock concours.

Regular powder coat ONLY. I have had the mag fans ceramic coated because I wanted the silver color and my coater knew what was going on. Any part has to be blasted JUST before coating to get all of the impurities off the surface.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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