CRG Discussion Forum
Camaro Research Group Discussion => Originality => Topic started by: MyRed67 on October 24, 2011, 12:51:53 AM
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I just finished cleaning up my original #3755820BC standard SB Crankshaft Pulley, it doesn't look like it ever had paint on it. It looks like almost a natural cast or bare metal color. Did these have some kind of a coating on them? I find it hard to believe it was not more rusty if it was just bare metal.
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The answer is in Jerry's book, pg 206 (The Definitive 1969 Camaro Z28-SS396 Fact Book). The short answer is no, it wasn't bare metal it was black. Jerry's book tells you what percentage of black was used.
http://www.z28camaro.com/publications.html
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I have Jerry's 67 Definitive Z28 book, it does not have list you referred to. But I found it here; http://www.67z28.com/finishes.htm
I printed it out, and have used it a LOT. If you go to Pulley, crankshaft: you will see; Camaro Nationals says Natural, and McNeish Book says 60 % gloss black paint or gray phosphate acceptable. My original has clearly never had paint on it. I used nothing but degreaser and small detail wire brush to clean it. I am going to post a couple pics. On the back you can make out the outline of Y from the front of the Harmonic Balancer and you can clearly see it never had paint. BTW, my car is a 11A 66 LOS build, that may make some difference.
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Whoops...missed the gray phosphate.
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OK, so how do I restore the Gray Phosphate?
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OK, so how do I restore the Gray Phosphate?
Check this link and read the whole thread. The ordering info is in the 4th post.
http://www.camaros.org/forum/index.php?topic=1092.0 (http://www.camaros.org/forum/index.php?topic=1092.0)
There are two different shades of phosphating.....black, which is usually used for bolts and gray, which is what you would need. When you order, you need to specify which you want.
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I did my pulley in grey phosphate, came out great, also did the fan pulley, as the back was definitely grey phosphate in color. I used the Palmetto chemicals, get the grey phosphate and black manganese which is used on most of the bolts. Get a small electric burner, do not do indoors. I have a double one from Walmart and get a small and large porcelain coated crab pot, also from Walmart and cheaper than stainless steel. I use the small pot for bolts as you don't need to heat up a ton of solution. Also if you strain the used chemical with a coffee filter you can reuse the solution with great results over and over again.
Also parts must be cleaned either by sand blasting or with bolts I use a wire wheel.
Results are great, but I never thought about using distilled water from the thread, so I am going to try that, as once in a while there is some streaking.
I prefer to reuse an original bolt as opposed to the reproduction stuff if I can help it
Mike