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Join Date: Dec 2001
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Engine case before and after
I dug up an old shot of my case "before" tumbling and cleaning and "after."
As I near assembly time, I am making sure the details are right. I used tool blackener on the original studs which were a black oxide finish. I have seen VERY nicely done concours cars with studs with the finish worn off, but this was a very simple step that will make this engine look like the ones in the factory shop manuals! The corrosion protection is a coating of oil. The factory went to zinc-plated studs in later production, but in these days, the DIN studs were black oxide with an oil finish. I also found the correct black oxide wave washers and the nuts went to the plater today. Enjoy!  
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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08-08-2007, 04:50 PM
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Location: Irvine, CA
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Wow John that looks great! What exactly is tool blackener?
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-Jess |
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08-09-2007, 09:41 PM
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The blackening agent is a mixture of selenious acid, phosphoric acid, copper and nickel.
http://www.eastwoodco.com/shopping/product/detailmain.jsp?itemID=251&itemType=PRODUCT&iProductID=251
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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08-10-2007, 12:09 PM
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Join Date: Oct 2006
Location: Raleigh, NC
Posts: 760
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How did you get all the nooks and crannies of the case so clean? I am having issues getting all the dirt out of those sumps between the crank journals.
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John A. 1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.) 05 Boxster S: For the Track. 06 Dodge Ram 2500 Power Wagon: Tow Vehicle |
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08-10-2007, 01:17 PM
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Join Date: Jul 2001
Location: Thunder Bay, ON
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Crap! John - I was going to send you out some nuts with the correct stampings - do you still need any?
AM
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1970 911E - track / weekend car 1970 911S - under restoration 1986 930 Slant Nose - fun car |
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08-10-2007, 01:33 PM
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John, here's my thread on the case prep. Not expensive. Aluminum 901/05 Engine Case Tumble-Polished: Perfection Defined
Andrew, my stuff has gone to the plater already! But I'm always looking for the right stuff.
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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08-11-2007, 05:51 AM
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Join Date: Jul 2001
Location: Thunder Bay, ON
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Hey John - I'm just getting a whole bunch of stuff plated in the next week as wekk. If you find you have some bad hardware after plating, I'll fire off some of my plated stuff. Are you doing the hardware in yellow zinc or cad?
Regards, Andrew M
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1970 911E - track / weekend car 1970 911S - under restoration 1986 930 Slant Nose - fun car |
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08-11-2007, 07:09 AM
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Silver Cad. Yellow Zinc is late sixties or early seventies, wouldn't be RIGHT!
 Thanks for the offer.
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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08-12-2007, 03:26 AM
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