[napster]

Is semi-gloss black the proper color for a 1969 GTO? Phosporus(sp)?

Thanks,

Jim

[SONIC 4 U]

Jim

Gray phosphate is the correct color for hood hinges. Ames supplies a nice reproduction or there are companies that provide the service if you want to stay 100 percent original.


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[GOAT WHORE]

It's my understanding that the correct finish in manganese phosphate. Heard this from an old timer who restored these hinges for years. He himself used to send them out to a local company to have plated but does not currently offer that service. He now just paints them. You can however find companies that still offer the service although it is quite expensive, around $200 a set iirc.

[dataway]

If you have a bead blaster ... and a stainless steel tank, and a hot plate to heat it up ... you can manganese phosphate them yourself for about $30.

Just did a rifle barrel, turned out great.

[charles bledsoe]

Hi dataway, would you mind posting a pic of your rifle barrel if you could? Just curious to see what Manganese Phosphate looks like.
Thanks.

[dataway]

Here is a picture of the barrel done in Mag-phosphate ... and a pic where you can see a control arm pivot done in zinc phosphate. The Zinc produces a medium to dark-medium gray, the Mag-phosphate produces a dark gray to blackish gray. The photo of the barrel appears a shade or so darker than it really is, it is NOT black ... but a dark-to-charcoal gray. Whereas the the Zinc is a medium-dark gray ..... hehehe hope that helps.

I need to find something of a very common color, that everyone owns, and take pictures of things next to that so people have a reference point.

[dataway]

The hardest part of the project was welding up a stainless pan to hold the barrel. The other parts I was able to cook in a large stainless cooking pot. Used an electric hot plate to do the heating.

Biggest thing is ... clean, clean, clean .... the parts need to be thoroughly degreased, bead blasted with clean beads, then handled with clean paper towels, lint free rags or gloves. But, done right, the results are very rewarding and the necessary chemicals quite cheap compared to paying someone for the service.

Some more info from when I did the barrel towards the end of this thread.

http://forums.maxperformanceinc.com/...d.php?t=803284

PS. If I had to make a guess ... I'd say the factory would use zinc-phosphate rather than mag-phosphate .... although I've seen hinges that could have been either. Seen them both old and gray, and old and blackish.

[charles bledsoe]

Just saw your pics. They help greatly. Thanks for posting them!!

[dataway]

After looking through my various experiment ... I'll have to backtrack and say you'd probably be happier with the results of Mag Phosphate compared to Zinc. The factory probably used Zinc-Phosphate ... but they had MUCH more control over the end color and I think the factory Zinc looks more like DIY Manganese.