Seal / grommet at back of tunnel, for wiring loom

Need some help with a technical problem - ask away and let's see if we can all help.

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inaglasshouse
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Seal / grommet at back of tunnel, for wiring loom

Post by inaglasshouse »

Hi all,
Where the fore-aft wiring loom exits the tunnel at the rear, I believe there should be a grommet or seal. Porsche will happily sell me the equivalent items for the speedo cable, brake line, fuel lines etc, but can't help me with a part number for the wiring loom grommet.
Anyone have any ideas of a part number or supplier? A pic of an original one would also be a great help.
Many thanks in advance, Richard.
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by stretch »

Richard, i didn't think there was a grommet. The parts manual refers to a rubber bush which is probably the front bulkhead one.
Mine just had the "bicycle inner tube" sleeving over the outer flange with the cable tie.?

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Dave
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by fetuhoe »

I think that there was a rubber 'condom' that was fitted onto the loom which is why nothing shows up on the PET. There weren't any clips holding it in place.

The easiest way to solve the problem is with a couple of lengths of Adhesive Lined Heat Shrink.

You will need to increase the loom diameter with one piece of heat shrink so that the larger diameter tube on the body will shrink down and grip the loom.
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inaglasshouse
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by inaglasshouse »

Thanks Dave, thanks Chris.
My friendly local OPC parts fellow did say there was a "seal" mentioned as part of a replacement loom (seal not available separately) so maybe that's the condom.
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by RichardBTek »

When I did mine there was a grommet which allowed the starter main feed through the tunnel end and as previously mentioned I made the sleeve out of a new bicycle inner tube. Looked just like the original. Secured it with a cable tie to the tunnel.


ImageDSCF5424 by Richard Heaton, on Flickr
1971 911T RHD (Big Restoration)
stretch
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by stretch »

Apparently, S cars have a Black cable tie whilst the T has a white one. I kid you not....!
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by inaglasshouse »

stretch wrote:Apparently, S cars have a Black cable tie whilst the T has a white one. I kid you not....!
Different rubber compound for the inner tube, too?
Have you been on that American site again, Dave? It's not healthy, stop it.
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inaglasshouse
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by inaglasshouse »

RichardBTek wrote:When I did mine there was a grommet which allowed the starter main feed through the tunnel end and as previously mentioned I made the sleeve out of a new bicycle inner tube. Looked just like the original. Secured it with a cable tie to the tunnel.
Thanks Richard, for the pic especially.

The rubbery bit in question is quite elusive in pics, usually out of sight behind the torque tube. If anyone has a close-up from an obscure angle so avoiding the torque tube, please post away...

Cheers, Richard.
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by RichardBTek »

ImageDSCF2037 by Richard Heaton, on Flickr

Any help?

Richard
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inaglasshouse
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Re: Seal / grommet at back of tunnel, for wiring loom

Post by inaglasshouse »

Yes! Very helpful. Many thanks.
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