924Board.org

[mattaebersold]

I'll keep this brief. It's the last step in getting my car road worthy

Car: 1980 S1 turbo

- shop took out the transaxle for me. Told me to fix this right cause they only want to do that once haha

- the transaxle has leaks at basically every mating point (diff, housing)

Take a look at these diagrams: https://www.rosepassion.com/en/diagrams-porsche-924-1979-eu-924-turbo-coupe-manual-gearbox-5-speed/clutch-gearbox-parts-115/replacement-transmission-transmission-case-1563/477301191a-p7097-gasket-477301191-7097

My question is:
- if I were to get the o-rings, housing gaskets, etc, would it be as simple as a careful disassembly of the housing and changing the seals? Or would it require disassembling the internals as well?

I think the former (remove housing and swapping gaskets) is something I can take on, but the latter (dismantling internals) is something that I want to steer clear of.
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PARTSTASH: www.partstash.com

1980 931
1991 Japanese Classic Mini
2000 740i
2006 530xi Wagon

[Mike9311]

I wish pics would not disappear off this forum so fast. I understand the old one but the recent!?!

You should be able to do most if not all without too much difficulty. Not sure I would go with the new Curil T2 anymore. It just isn't Curil K2 which has been discontinued. So maybe a Loctite product like what is referenced on the other threads. As an opinion, Curil T2 seems like more runny like an O-ring lubricant but I have only started with my first tube. I digress... here are some links

https://www.924board.org/viewtopic.php?p=308786#308786

Jacob with his Woody project just fixed his

https://www.924board.org/viewtopic.php?t=44552&postdays=0&postorder=asc&start=120
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

[mattaebersold]

[Mike9311]

Yes, exactly with the Curil. This technique is also used with other VW transmissions
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

[Beartooth]

I haven't done anything with my G31, but I have rebuilt a ZF S5-47 (and actually went back into it recently - I had some growling I thought was due to a bearing going out but may have been due to bearing clearances; also, the output seal wasn't square and had been leaking). For what you describe, I'd agree with Mike that it shouldn't be too difficult. It's mostly a matter of undoing the minimum to get it apart, then making sure everything goes back in the right place. On the ZF, the two main pieces are sealed with anarobic flange sealer, and I used Permatex's version https://www.summitracing.com/parts/ptx-51531. Never so much as drop, and I also used it on the timing cover on one of my Mercedes V8s. To my knowledge, it's the best choice for machined flanges. Going back to the transmission in question, I've found transmissions aren't the horrendously complex thing I once thought. There are gotchas, and some are a lot easier to work on than others, but not that big a hurdle for a dedicated DIY type. Even a full rebuild is actually fairly simple with the right pullers and measuring equipment.
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1980 931 diamond in the rough