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PostPosted: Mon Jun 12, 2017 5:51 pm 
356 Fan
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Location: Redwood City, Ca 94062 San Mateo Co. CA
Hi all,
Are these flat chrome disc hubcaps with painted center crests any good? Are they made inn China and do they hold up,fit right?
The kind Stoddard and Sierra Madre etc. sells.
Thank you,
Steve

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PostPosted: Tue Jun 13, 2017 2:11 am 
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Location: Orange County, Ca
Steve, I sent you off an email. I have recently purchased both Stoddard and Sierra Madre caps. They are quite nice on the external surfaces. Insides are nice but I noted two variations. First the profile which engages the wheel has a slightly different profile from OEM but doesnt pose a problem. Second issue is how the crest is held on which is with a speed clip that is also coated with silicone. Neither create any issue on steel wheels.


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PostPosted: Tue Jun 13, 2017 7:48 am 
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Location: La Mirada, CA
The hubcaps on my C are polished stainless steel, not chrome.


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PostPosted: Tue Jun 13, 2017 8:20 am 
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Location: Lafayette, NJ
+1 what Jon said.


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PostPosted: Tue Jun 13, 2017 12:34 pm 
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I bought some hubcaps from Stoddard, Performance, or Automotion back in 1997 or 1998 so I'm not sure they aren't NOS or OEM.

I can't tell the difference between them and the hubcaps which were on my 911 (essentially the same wheels as a 356C but 0.2 mm thicker steel) when I got the car in 1997 or the many swap meet hubcaps I own.

They tend not to fit 100% flush to the wheel but they aren't about to fall off either. They're difficult to remove. I could probably take some pliers to the hubcaps to get them to fit more tightly until I have to remove them again.

By the way, many chromers won't touch hubcaps. I have heard of one outfit that will:

Charles Sihilling Metal Polishing
1018 "C" East Chestnut Street
Santa Ana, CA 92701

(714) 543-7051

I have no personal experience with Charles Sihilling Metal Polishing.

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1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster


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PostPosted: Tue Jun 13, 2017 1:09 pm 
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Original C hubcaps have a polished stainless steel outer skin.
Repros are chromed steel.

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64C coupe
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PostPosted: Tue Jun 13, 2017 2:48 pm 
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Dave Wildrick wrote:
Original C hubcaps have a polished stainless steel outer skin.
Repros are chromed steel.


Maybe, but...

The chrome shop I did ask about Porsche hubcaps identified them as "chrome-washed stainless." I should have asked for clarification but I took it to mean chromium plated directly over stainless as opposed to copper-nickle-chromium layers. It makes sense because stainless steel usually looks a bit different from chrome plating.

I checked all my hubcaps: 356A "Super" hubcaps with crest (reproductions), VW μbus hubcaps (reproductions), the hubcaps on my 911 and the all old 911 hubcaps. They are all ferromagnetic.

There are ferromagnetic stainless steel alloys (ferritic stainless steels); ferritic alloys may be preferred for hubcaps. At any rate, stainless versus non-stainless probably isn't a useful way to determine if a hubcaps an original or a reproduction.

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1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster


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PostPosted: Tue Jun 13, 2017 5:07 pm 
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Jim Alton wrote:
Dave Wildrick wrote:
Original C hubcaps have a polished stainless steel outer skin.
Repros are chromed steel.


Maybe, but...

The chrome shop I did ask about Porsche hubcaps identified them as "chrome-washed stainless." I should have asked for clarification but I took it to mean chromium plated directly over stainless as opposed to copper-nickle-chromium layers. It makes sense because stainless steel usually looks a bit different from chrome plating.

I checked all my hubcaps: 356A "Super" hubcaps with crest (reproductions), VW μbus hubcaps (reproductions), the hubcaps on my 911 and the all old 911 hubcaps. They are all ferromagnetic.

There are ferromagnetic stainless steel alloys (ferritic stainless steels); ferritic alloys may be preferred for hubcaps. At any rate, stainless versus non-stainless probably isn't a useful way to determine if a hubcaps an original or a reproduction.


Here's an item from Bruce Baker from 2004, which I based my proclamation on. I've seen others on 356talk say the same thing, but I honestly am no expert.
Maybe a metallurgist can weigh in? Maybe Ab Tiedemann knows or even Joris Koning in Europe?

[From: Bbspdstr@aol.com

Date: Mon, 12 Jan 2004 11:14:44 EST
Subject: [356Talk] disc brake hubcaps, cont'd
To: 356talk@356registry.org

<<Did anyone ever answer the question the other day about whether "C" hubcaps
are stainless or chrome? I've read they were stainless as well, but they
look like chrome to me.>>

Before any assumptions are considered facts, what I have found is they are a
stainless alloy with magnetic (ferrous) properties. 400 series stainless
alloys, (as used in cutlery etc.) are magnetic. 300 series alloys generally are
not. "Chromed" they are not either. I did some homework, having always believed
that they were "stainless" but confused by the magnetic test- having also
always assumed 'stainless' wasn't magnetic (thanks, Brett). I also polished some
nasty scratches out of some hard-to-find non-punched plain early disc brake
caps, so I knew there was no chrome plating. The parts book says nothing about
their composition as it will with DIN or specialty hardware but shows they were
assigned a 901 number. All this is for OEM; repro I don't know.
Bruce Baker]

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PostPosted: Mon Jun 19, 2017 12:55 pm 
356 Fan
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Location: Redwood City, Ca 94062 San Mateo Co. CA
Hi guys,
I sourced four original KPZ flat hubcaps and five original colored crest caps but I need three metal clips to hold one crest to posts on hubcap.
Can anyone drop me three in the mail with a stamp?
Certainly appreciate it.
Regards,
Steve


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PostPosted: Mon Jun 19, 2017 2:56 pm 
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Location: Los Angeles County
steve raucher wrote:
Hi guys,
I sourced four original KPZ flat hubcaps and five original colored crest caps but I need three metal clips to hold one crest to posts on hubcap.
Can anyone drop me three in the mail with a stamp?
Certainly appreciate it.
Regards,
Steve


The 356B/356C and 911/912 parts catalogs both identify the hubcap as 901.361.301.04 hub cap with bores, but

The 356B/356C parts catalog identifies the nuts as 999.591.423.03 Tapping Nut which is available at:
  1. Stoddard: 999-591-423-03 Speed Nut... $2.64
  2. Sierra Madre Collection: Speed Nut Clip, $1.54, 999.591.423.03

The 911/912 parts catalog identifies the nuts as 999.591.339.02 Tapping Nut which is available at:
  1. Einmalig: 999.591.339.02 Porsche Tapping nut 26¢
  2. Pelican Parts: Speed Nut 999-591-339-02-OEM $1.00

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Jim Alton
Los Angeles County, CA
1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster


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