Correct Pulley Seal Part Number?

[spitz]

Hi Everyone -

I hope I am not posting this in the wrong place, apologies if I am. Elementary problem here, but can't seem to find it through search.

I am replacing the pulley seal on my 1969 911T Engine (2.0), and tried to purchase a NLA pulley seal through our sponsor.

The order was canceled due to having to order the original Porsche seal from Germany. I see that the seal I removed was Elring - however I can't seem to find an Elring seal for this specific year.

The closest match is 999-113-290-41-M30 which seems to be for 74+ 911's.

Would this work on a 1969 car? The NLA Porsche part is labeled as: "http://forums.pelicanparts.com/Pulley Seal, undersize 29.5x50x10mm" Will wrong sizing be a cause for leaks?

Thank you in advance for the guidance!

[Flat6pac]

The -41 seal is used from 65 through into the Carreras
Bruce

[spitz]

Great! I guess they just have it labelled wrong. Thank you!

[KTL]

Bruce is correct. The original part number 999-113-049-50 has been superseded by 999-113-290-41. This is what Pelican catalog produces when you type in the original part number

Pelican Parts - Automotive Parts and Accessories - Porsche & BMW

Elring Klinger is a good seal and I would not hesitate to use that brand of seal.

The label "undersize 29.5x50x10" is for a leaking shaft that won't seal with the standard -41 part number. The inside diameter of the seal is 0.5mm smaller to seal more tightly around the shaft. Typically the shaft is machined undersize to accept the tighter seal.

One last bit of information worth sharing. Often times people replace that seal and there's still a leak. Make sure you check the intermediate shaft cover. If that's not leaking, the leak may be due to the o-ring inside the case that is beyond the pulley seal. This o-ring seals the case bore where the #8 main bearing housing is located in the crankcase. It's the red ring on the left side of the crankshaft in this picture



Only way to fix that leak is to split the engine case and replace the o-ring, with a little extra sealant around it for good measure.

[spitz]

Thanks so much Kevin - Great information to know!

It looks like the PO of my car may have put some sort of epoxy around where the o-ring you mentioned may leak. It doesn't look to have any punctures or leaking so I THINK it is good to go. I have seen several fixes like this on the forums, not entirely sure on the success rate, but hey, mines not leaking! I have seen people use a sort of 'clamp' the lack of better terms and some epoxy to seal the area: http://www.mobileworkswest.com/images/TAS-nosebearing-sealsleve.jpg