SWB restoration questions

[304065]

Ladies and Gentlemen,

As I prepare for engine assembly there are a couple items remaining that I could use some help with.

The original fastening hardware was CAD plated. I may have found a local source for Cad, as opposed to zinc plating. However, the plater would like a sample. Can anyone snap a photograph of some ORIGINAL hardware, such as that at the bottom case parting line, from a '64-67 car? It would be a big help in getting the finish correct.

Final quesion. I believe the early Weber manifolds were plated as well. Can anyone confirm this? Looking at mine they are aluminum, but they appear to have a plating of silver cad as well.

Any assistance would be greatly appreciated!

Best,

John

[304065]

I know original is hard to find. And many cars are "restored" using nylock nuts instead of DIN 934. But I bet SOMEONE knows what I mean. . .

[Tom F.]

John, I'm sorry that I can't answer your question, but I just HAVE to know, what is the difference between Nylok and DIN 934? Thanks. Tom

[preS]

John can you post a picture of the nut that has your quest is about?

Richard

[typ901]

Ladies and Gentlemen,

The original fastening hardware was CAD plated. I may have found a local source for Cad, as opposed to zinc plating. However, the plater would like a sample. Can anyone snap a photograph of some ORIGINAL hardware, such as that at the bottom case parting line, from a '64-67 car? It would be a big help in getting the finish correct.

John;
i thought all '900' series fasteners to be yellow Cad. i don't know that there are different shades of yellow. I believe the "zinc" that you're referring to, as seen on earlier cars, is actually clear Cad. although there was some limited use of zinc.
HTH
best
jerry

[Bobs 67S]

John,
have you picked up a conversation with Paul Henninge. He is in the process of a real labor of love...the cataloging of the factory colors on as much of the early 9 series cars parts and hardware as possible. Some of the conversations with him have been real eye openers. Parts that I have just "asumed" were black were in fact grey, and after disecting 40 year joints and inner surfaces of rust and dirt his investigation is priceless.

Also: In looking at Paul Risinger's 1967 911S and the conversation of details, Paul had gone thru re-replaceing a number of bright polish siver zink to a satin silver zink so they would be closer to the "original". (It seems the concouring folks follow trends and fads too, so when going for a "Manhattan" back in the 1980's-90's a little bling was a good thing...)

Let us know what you find out. Thanks.

[911quest]

John I have an early motor I will be disassembling in a few days if you want I can get you some pictures I can tell you they look dark grey. Probably were clear plated.

[Bobs 67S]

John,
here are two photos of Paul R's 1967 911S. The trans photo I took and Paul's car on a hoist was taken by someone else (I wish I could remember who so I could give proper credit).

It looks like the thru case bolts/nuts are gold? and almost everything else is gold cad....but this is a 1967...
HTH

[304065]

Bob, I had a nice chat yesterday with Paul.

Here are the manifolds.

It's clearly a factory coating because it's underneath where the bracket mounts to hold the carburetor crossbar linkage. You can also clearly see that it was applied PRIOR to final machining- there's a clear line where the flanges were ground flat that doesn't have the coating present.

I think it's a conversion coating of some sort, like Alodine or Iridite, but the equivalent on magnesium.

Given the toxicity of chromate-based conversion coatings, I wonder what finish could be used to replicate it? I would powder-coat it but am concerned that the magnesium substrate isn't compatible with powder, although many have reported success with powder-coated fans.