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> New Item Rarely Seen on Ebay, NOS Limited Slip Differential Transmission Flanges
914Sixer
post Aug 9 2024, 07:00 AM
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Lot thicker and longer shaft.


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914Sixer
post Aug 9 2024, 07:13 AM
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One more


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Mikey914
post Aug 9 2024, 10:48 AM
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Saw these, was wondering how these may hold up. I believe the originals were forged. These appear to be welded.
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rfinegan
post Aug 9 2024, 12:09 PM
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good eye...
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914Sixer
post Aug 9 2024, 01:52 PM
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Somebody with a an original factory Porsche 914 LSD will have to chime in. I have never seen originals, so do not know. Pretty sure the factory 911 LSD were forged.
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Superhawk996
post Aug 9 2024, 02:35 PM
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QUOTE(Mikey914 @ Aug 9 2024, 12:48 PM) *

Saw these, was wondering how these may hold up. I believe the originals were forged. These appear to be welded.

Not welded that is heat treat zone from induction hardening
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mb911
post Aug 9 2024, 02:36 PM
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That color is from burnishing not welding
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mb911
post Aug 9 2024, 02:36 PM
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QUOTE(Superhawk996 @ Aug 9 2024, 12:35 PM) *

QUOTE(Mikey914 @ Aug 9 2024, 12:48 PM) *

Saw these, was wondering how these may hold up. I believe the originals were forged. These appear to be welded.

Not welded that is heat treat zone from induction hardening



Yup more likely than my response
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mepstein
post Aug 9 2024, 04:18 PM
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The ad reads like these were once made by Porsche, right? I’ve never seen a Porsche stub like this. Looks aftermarket to me. Maybe I’m missing something since I’m not looking at the actual ebay description.
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914Sixer
post Aug 9 2024, 04:31 PM
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Added picture of box with part number.
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Superhawk996
post Aug 9 2024, 04:48 PM
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QUOTE(mepstein @ Aug 9 2024, 06:18 PM) *

I’ve never seen a Porsche stub like this. Looks aftermarket to me.

That’s because we are used to seeing them rust covered. Uhmm, I mean with patina. (IMG:style_emoticons/default/happy11.gif)

Like you, I’m a bit surprised to see the induction hardening and wondered about the part. I would have thought they would be oven treated which results in a black / blue oxidation over the entire part. But it is plausible that it was induction hardened, Germany used to be a manufacturing powerhouse. Or, could be a part produced later for service after induction hardening became more common place and better suited to small production runs vs oven heat treat.

It is interesting to see one untouched like this. (IMG:style_emoticons/default/beerchug.gif)
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sixnotfour
post Aug 9 2024, 04:49 PM
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box says one flange.
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sechszylinder
post Aug 10 2024, 05:24 AM
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aftermarket product, original box…

original flanges feature at least a part number besides the fact that these are typically made from cast iron that have been turned to spec…

br
benno
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mepstein
post Aug 10 2024, 05:57 AM
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QUOTE(sechszylinder @ Aug 10 2024, 07:24 AM) *

aftermarket product, original box…

original flanges feature at least a part number besides the fact that these are typically made from cast iron that have been turned to spec…

br
benno

(IMG:style_emoticons/default/agree.gif) I think CMS or someone similar made them.

We bought a shops inventory of air cooled parts. There were many used parts taken out of cars and put in the original Porsche box of the replacement part. We did get a lot of nos parts in original boxes (nos 928 4 valve heads) but the majority of the parts were the used part, placed into the Porsche box of the new part and placed back on the parts shelf. It did make it easier to identify the part but sometimes disappointing that it was used.

I’ve also never heard of a stub that’s specific to an lsd. I’ll have to ask the higher powers on that one.
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Superhawk996
post Aug 10 2024, 06:11 AM
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QUOTE(mepstein @ Aug 10 2024, 07:57 AM) *

QUOTE(sechszylinder @ Aug 10 2024, 07:24 AM) *

aftermarket product, original box…

original flanges feature at least a part number besides the fact that these are typically made from cast iron that have been turned to spec…

br
benno

(IMG:style_emoticons/default/agree.gif) I think CMS or someone similar made them.


I’m not enough of an expert to disagree but we also know Porsche distributes parts made by certain aftermarket suppliers as Porsche parts complete with Porsche part numbers on the packaging. We also know with certainly some of those parts were not made to the same quality and fit & finish of the “original” parts.


Could this be similar situation? (IMG:style_emoticons/default/confused24.gif)
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mepstein
post Aug 10 2024, 07:57 AM
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I would bet money on aftermarket.
I’m not saying it’s a Martin Bott product but it looks nothing like a Porsche part.
Seller might have bought it in the Porsche boxes and been sold a story along with the part.


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sixaddict
post Aug 10 2024, 08:34 AM
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I have a gearbox with an ZF LSD……output flanges look normal.
Wondering what Chris Foley or Mike (Dr E) would say…
Not sure how to ping them
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oldie914
post Aug 10 2024, 10:09 AM
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As far as I know, the 914/6 transmissions were built using the internal parts from the 2.2 liter 911 transmission. 914/6 gear ratios are the same as the 2.2 911.
I went on a factory tour in 1971 and saw a 914/6 on the assembly line and also saw a 914/6 engine being assembled. Did not notice any 914s on the transmission line.
That being said, the only difference between flanges for 2.2 with factory LSD and stock is the length. The LSD is about 15mm longer.
The LSD flanges are rare and valuable so this may be a reproduction being offered, perhaps by Porsche. I wouldn't touch it unless the seller could provide dimensions. The box shows a sales date 03.11.97 (3Nov1997) and does not belong to the flanges.
Look at the Pelican 911 Forum for tech information on flanges.
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Superhawk996
post Aug 10 2024, 11:29 AM
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QUOTE(mepstein @ Aug 10 2024, 09:57 AM) *

I would bet money on aftermarket.
I’m not saying it’s a Martin Bott product but it looks nothing like a Porsche part.
Seller might have bought it in the Porsche boxes and been sold a story along with the part.

(IMG:style_emoticons/default/aktion035.gif) Alright I’m convinced by that picture.

Still look like nice parts but agree, almost certainly not NOS.
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technicalninja
post Aug 10 2024, 12:34 PM
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Maybe it's just ME!

The dowel pin holes look oversized to me...


Those look nice but I'm in agreement with everyone else.

Those DON"T look "Porsche" to me either!
(IMG:style_emoticons/default/beerchug.gif)
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