Is the firewall cable harness hole round or oblong?

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Is the firewall cable harness hole round or oblong?

Postby berntd » Sat 12 Aug, 2017 9:23 am

I can't tell for sure from what was left of my firewall/bulkhead.

I need to know if the upper cable hole near the brake booster is round or slightly oblong in the horizontal plane.

Maybe someone has a picture?
I think W114 might be similar.

Regards
Bernt
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Re: Is the firewall cable harness hole round or oblong?

Postby John Green » Sat 12 Aug, 2017 10:05 am

I would go with round, never seen an oblong one, would be hard to get the grommet to seal.

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Re: Is the firewall cable harness hole round or oblong?

Postby berntd » Sat 12 Aug, 2017 1:36 pm

Thanks.

My grommet appears a bit ibling at the back as if it qas in an obling hole. Could just be a result of rust though.
I just made a 44mm sample round hole and everything can fit through but the grommet is quite sloppy.

Then made a 38mm sample and I can just get everything through with difficulty.

I can't get the grommet through though.

Can't move ahead because the remnants I have left seem to have a flat part in the top of the hole indicating either a flat spot for licating or the top of an obling hole.

If so, I suspect 38mmx50mm or 38x45.

Dunno.

Nothing is simple.

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Bernt
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Re: Is the firewall cable harness hole round or oblong?

Postby T-Modell » Sat 12 Aug, 2017 5:01 pm

Hi Berndt,

here's a photo of a 1983 RIGHT side ... all round ...
2017-02-09 - 72 - SL Kabelbaum_1280x960.JPG

Regards
Thomas
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Re: Is the firewall cable harness hole round or oblong?

Postby berntd » Sat 12 Aug, 2017 7:45 pm

Hallo Thomas, that looks much different to all I have seen.
It looks like a LHD?

In that case I need your left side (driver side)

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Re: Is the firewall cable harness hole round or oblong?

Postby T-Modell » Sat 12 Aug, 2017 7:59 pm

Hi,
that's the best photo I have from the left side ...
2017-02-09 - 12 - SL Kabelbaum_1280x960.JPG

Regards
Thomas
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1967 W111 250SE Cabriolet, horizon blue
1973 W115 220D 5.0 Pick-Up Argentina, work in progress 2017/18
1986 R107 500SL, arctic white, the midlife crisis viagra replacement
2007 R171 SLK350, calcit white
2008 S211 E63T, calcit white, sleeper
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Re: Is the firewall cable harness hole round or oblong?

Postby berntd » Sat 12 Aug, 2017 8:20 pm

Thanks Thomas.

I must say that I still can't recognise it but I do see a similar grommet still covering the hole. Is that a R107??

BTW: I have made the hole oblong for now 36x41mm.
It is not much oblong but I can still enlarge it later if I have to.

I wanted to send a picture but it us too big and I can't edit size on phone.

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Bernt
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Re: Is the firewall cable harness hole round or oblong?

Postby T-Modell » Sat 12 Aug, 2017 9:19 pm

Yep, it's a R107; I don't have a better picture, but I'm pretty sure, everything's round ...
Thomas
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1967 W111 250SE Cabriolet, horizon blue
1973 W115 220D 5.0 Pick-Up Argentina, work in progress 2017/18
1986 R107 500SL, arctic white, the midlife crisis viagra replacement
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2008 S211 E63T, calcit white, sleeper
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Re: Is the firewall cable harness hole round or oblong?

Postby berntd » Sun 13 Aug, 2017 12:18 am

If the fusebox is on the right like ours, then the cabling will come through on the right.

It looks nothing like ours though. That big hole there is probably 3 times the size we have here. So yes, at that size, it can certainly be round and one can jyst throw the harness through it :-)
Or maybe they changed it later.
Anyway, thanks for trying but it can't help in this case.

Isn't it amazing that no pictures of the crucial details can be found.
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Bernt
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Re: Is the firewall cable harness hole round or oblong?

Postby berntd » Sun 13 Aug, 2017 12:35 am

Here you can just see the 2 grommets.

This was pre-restoration
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