Author Topic: Position of the crankshaft seal  (Read 191 times)

Figoulu

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Position of the crankshaft seal
« on: August 24, 2025, 05:17:02 »
Hi gents

I was working under my car and noticed that the crankshaft seal isn’t sitting flush with the crankcase. There’s no sign of an oil leak, and I can see some sealant around it. What’s your opinion on this? (Please, only from those who really know 😁)
1965 230 SL
1991 Porsche 911/964 carrera 2

My youtube channel #lfgdf

Figoulu

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Re: Position of the crankshaft seal
« Reply #1 on: August 24, 2025, 18:39:53 »
Nobody to help me ? 😅
1965 230 SL
1991 Porsche 911/964 carrera 2

My youtube channel #lfgdf

yves

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Re: Position of the crankshaft seal
« Reply #2 on: August 24, 2025, 19:36:05 »
Sorry Francois……! I can’t help you but am on the professional answer…soon?
Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...

Figoulu

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Re: Position of the crankshaft seal
« Reply #3 on: Today at 04:48:16 »
Sorry Francois……! I can’t help you but am on the professional answer…soon?

In case you have some time to spare if you could just take a look at yours and possibly post it here, it would ba great 👍
1965 230 SL
1991 Porsche 911/964 carrera 2

My youtube channel #lfgdf

WRe

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Re: Position of the crankshaft seal
« Reply #4 on: Today at 06:28:08 »
Hi,
the sealing ring must sit flat on the engine block.  Yours has moved too far outwards . Perhaps the inner Borgmann ring has shifted outwards too.
Attached are two pictures from the German Pagoda Forum.
...WRe

Figoulu

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Re: Position of the crankshaft seal
« Reply #5 on: Today at 07:38:49 »
Hi,
the sealing ring must sit flat on the engine block.  Yours has moved too far outwards . Perhaps the inner Borgmann ring has shifted outwards too.
Attached are two pictures from the German Pagoda Forum.
...WRe

thanks  !

I noticed in the first picture that the seal doesn't appear to be 100% flush, but the angle of the photo might be a bit misleading…

If that’s really the case, I suppose it could be easily repositioned? I don’t think the seal has moved since it was installed.

I've asked the mechanic who did the work and I'm waiting for his response, but I wanted to get your advices in the meantime.
Anybody else to complete ?
1965 230 SL
1991 Porsche 911/964 carrera 2

My youtube channel #lfgdf

WRe

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Re: Position of the crankshaft seal
« Reply #6 on: Today at 07:58:40 »
In my first picture, too much additional sealant was probably used.
The "collar"/edge should fit tightly, if there is one (different parts).

su8pack1

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Re: Position of the crankshaft seal
« Reply #7 on: Today at 12:44:42 »
I just replaced mine last month.
1969 280SL
1984 300CD
1987 190E 2.6
1988 190D 2.5

Figoulu

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Re: Position of the crankshaft seal
« Reply #8 on: Today at 13:45:40 »
I just replaced mine last month.

And how was the seal against the crankcase ? Flush or not ?
1965 230 SL
1991 Porsche 911/964 carrera 2

My youtube channel #lfgdf

 

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