924Board.org

Porver9two4 · Joined: 22 Jan 2004 Posts: 104 Location: United Kingdom

I appear to have sprung an oil leak from the bellhousing ('83 924 NA)..... I assume it is likely to be crankshaft oil seal? anything else back there it could be? It is definately engine oil and hasn't yet soaked the clutch.
How big a PITA is it to change?.... probably a $3 part and 40 hours labour!

Duncan · Posted: Tue Mar 01, 2011 2:39 am Post subject:

No, the part is more expensive, something like 40 GBP.

I have the same. It was leaking before the new clutch was installed, and
again when the engine was (professionally) rebuild, and now it seems to be leaking a little again. Sigh.
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1983 NA Alpineweiss since 2001
Peugeot 205 Generation

emoore924 · Joined: 13 Apr 2004 Posts: 2822

Hmm, not sure if you can do the rear main seal with the engine in-situ. At the least, I think the torque tube would have to come out, which means dropping the tranny too, and all the clutch stuff, and taking the flywheel off the crank?

IIRC, the RMS often fails because the crank starts to move around in the journals, which can mean the bottom end is worn. But I think there are endplay specs that could tell you whether something is going on with that...

Or you could just keep an eye on the oil level and drive it until the clutch starts to slip, if ever...

Duncan · Posted: Tue Mar 01, 2011 4:38 am Post subject:

My seal was replaced first when the clutch was done, with the engine in place.
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1983 NA Alpineweiss since 2001
Peugeot 205 Generation

Duncan · Posted: Tue Mar 01, 2011 4:52 am Post subject:

I hope in my case it is not the main bearings...they have been replaced in the rebuild.
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1983 NA Alpineweiss since 2001
Peugeot 205 Generation

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Not the main bearings. Most likely the rear main seal, which can be done with the engine in situ. For an '83, you will need to drop the transmission and then slide the torque tube back in order to have enough room to remove the clutch assembly and flywheel. Once those are out of the way, you should be able to replace the RMS.
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erstwhile owner of just about every 924 variant ever made

Duncan · Posted: Tue Mar 01, 2011 5:02 am Post subject:

Ideola,

Do you have any idea what makes the main seal go bad so quickly?
After the first change it started leaking again, and now again...
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1983 NA Alpineweiss since 2001
Peugeot 205 Generation

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

No, unfortunately, I don't, other than the obvious installation errors, such as contamination, damage to the seal during install, incomplete or improper seating, etc. It could be an inferior brand of seal as well, I've seen about 5 or 6 different brands of these here in the US. I've always used the Victor Reinz or Goetz seals that come in the head gasket kits.
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erstwhile owner of just about every 924 variant ever made

stevekat · Joined: 19 Jan 2008 Posts: 719 Location: Los Angeles, CA

Sometimes you get a bad or inferior seal. But also check the crankshaft surface.
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"Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."

Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's.

!tom · Posted: Tue Mar 01, 2011 5:51 am Post subject:

Insufficient lube on install may have caused it to burn, or it could have been damaged while installing.
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78 924 NA
5-lug

Brockoli · Posted: Tue Mar 01, 2011 6:06 am Post subject:

I just installed mine last weekend. It was difficult to install.

However, I dont think that oil would ever get to the clutch. I think the flywheel would prevent this from happening. Just a thought....

I would remove the transmission to fix it. Much less work than the engine and you dont need an engine hoist. Just be careful when installing the torque tube not to mess up your throw out bearing (ask me how I know).
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'80 924 M471,Wideband O2, Full coilover susp,23/19 sways,Bilstiens,KLA Strut Brace,Roll Bar,Test Pipe,BBS RS, Willwood BBK

25% of a '87 944 Chumpcar http://straightpipe.ca/forums/showthread.php?t=2454

'79 924 Sebring Edition(Sitting)

Porver9two4 · Joined: 22 Jan 2004 Posts: 104 Location: United Kingdom

Hmmmm.... I figured as much. Thats not going to be a particularly fun job then

I suspect it has gone hard as I think my car spent some time (possibly years) off the road before I got it and now it is being used again it is wearing out rather than flexing with the movement. I would just leave it, but it isn't a drop here or there, it leaks a fair bit and is getting worse.... at least it hasn't got to the clutch yet

Any idea where I can get this part in the UK? I can't seem to see it listed at the ususal suspects websites.....

Duncan · Posted: Fri Mar 04, 2011 9:51 pm Post subject:

The seal is right on the Porscheshop.co.uk site,
http://www.porscheshop.co.uk/acatalog/porsche_924_gaskets_seals.html
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1983 NA Alpineweiss since 2001
Peugeot 205 Generation

Porver9two4 · Joined: 22 Jan 2004 Posts: 104 Location: United Kingdom

Martijnus · Joined: 29 Dec 2006 Posts: 2019 Location: Netherlands

big seals are always pricy.

It could also be the oil gallery plug. I had leakage from that thing once, because there wasn't a plug. Can't really imagine that it'll fail over time, but who knows

Would be a bummer if you'd replace the seal and the leakage isn't solved

But i'm 99% sure it's the seal...since it has been replaced. Wrongly place it and it dies quickly. Combined with some wear on the crankshaft flange and it'll leak.
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"Rule: Turbo's make torque, and torque makes fun." (C. Bell)

924 "50-jahre", 1981.
MSII/extra, LPG, ITB's, 5lug.
To be turbo'ed in a while.
Killed her at the Nurburgring, Porscheless at the moment