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Location: Northern Virginia
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3.6/ 993 experts?????
I have posted a few times and made call to a few engine builders without sucess. What is the finish on the 993 chain cases? If I wanted to restore the tired "black" finish prior to a rebuild....who can do this? Can they be powder coated?
Rick '78 930 |
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07-22-2004, 12:59 PM
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I know folks that have powdercoated the covers. I don't know about the cases. But I think It shouldn't be a problem as long as you mask off the oil galleys and the gasket surfaces properly. As far as I know they are made from Magnesium and the finish is corroded blackened magnesium
 Sorry, I really don't know what the finish is.
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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07-22-2004, 03:48 PM
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Thank you. It's amazing to me that this is such a mystery. The finish looks almost like a composite type of finish applied over the metal substrate.
Rick '78 930 |
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07-23-2004, 07:09 AM
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Okay but don't laugh, We restore the finish on Hewland Gear Boxes with a Map gas torch and black BBQ paint.
The finish on the Porsche is a result of Pickling at the end of the casting process, I know of no place to redo this process. Best Regards |
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07-23-2004, 09:46 AM
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That sounds like a good idea. I guess that I should media blast the piece and then "pickle" the piece with a torch and paint. I guess that I could still powder coat as well.
Thanks. Rick '78 930 |
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07-23-2004, 10:24 AM
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Rick,
ASC (American Stripping Co.) in Manassas did great work on my engine tin, valve covers, fan and housing when I rebuilt. Check out the pics in the Dorkiphus gallery under Ted Thomas engine drop. |
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07-23-2004, 03:42 PM
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I think the covers are fiber reinforced plastic. I know that some powdercoaters can powdercoat mdf(wood) but it is special. Check around to see if they could do them.
Aaron
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Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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07-23-2004, 04:43 PM
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The plot thickens. What about the cases? If they are plastic, I ought to be able to blast them with a soft media and get them to look new.
Rick '78 930 |
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07-23-2004, 05:30 PM
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Only the covers are plastic. The cases are Magnesium alloy. Ryan had the covers on the 964 3.6 engine powdercoated.
Ingo
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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07-23-2004, 05:35 PM
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Thank you. That helps with the puzzle.
Rick '78 930 |
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07-23-2004, 06:45 PM
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1974 Porsche 911 Targa 3.6
