Oil Seal between Gearbox and Enginecase on 328 | FerrariChat
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Oil Seal between Gearbox and Enginecase on 328

Discussion in '308/328' started by dirk, Nov 25, 2007.

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  1. dirk

    dirk Rookie

    Nov 4, 2003
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    Europe
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    Dirk
    #1 dirk, Nov 25, 2007
    Last edited by a moderator: Sep 7, 2017
    Hi Guys,

    i just finished ( i thought so ) my 328 engine buildup for my 308QV.
    I use a 328 Block and the 308 Gearbox, new crank, new pistons, overhauled camshafts and so on.

    But at the first run, i saw, that there was a little oil leak between gearbox and main enginecase.

    When i looked under the 308 Block i saw these oil seal on a stud nearby the oilpump.

    Do they seal the threat of the stud ? Its great, so i have to do the full engine job again.

    This seems to be like "Do it Yourself store" engeneering.

    Dirk
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  2. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,429
    Canada
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    Newman
    #2 Newman, Nov 25, 2007
    Yes theres an o-ring on one stud under the oil pump that get sandwiched between the pan and timing drive cover and yes it'll leak engine oil if you left it out. If thats the cause then you can pull the timing cover with the engine in the car. Im sure you could also fix it another less professional way, its up to you.

    P
     
  3. mk e

    mk e F1 World Champ

    Oct 31, 2003
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    #3 mk e, Nov 25, 2007
    I think I heard my name being caled :)

    You MIGHT be able to "fix" it by pulling the stud, hosing the hole out with carb or brake cleaner, filling it with RTV and putting the stud back.

    You all might be able to fix it by pullin the stud, scraping out any goo that is up in the hole, then pushing the o-ring in through the stud hole and expanping it out with a a tapered something so you can get the stud back in. Probably faster to just put the timing cover though.
     
  4. Verell

    Verell F1 Veteran
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    May 5, 2001
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    Verell Boaen
    #4 Verell, Nov 25, 2007
    Ran into the same problem back in '02 when I had to pull the timing cover to do the timing drive bearings. (There are 3 or 4 related threads about the project in the old fchat.) Didn't notice that while sliding the timing cover into place, the O-ring for that stud came adrift & worked it's way into the stud hole. Yes, the stud leaked.'

    Pulling the timing drive cover w/engine in the car once everything(belt covers, A/C compressor, etc. is fully assembled is about 2 days to remove, & another 2 days to reinstall. I've learned the hard way that I can't do it faster, & it can take a lot longer if you break a stud...

    It may be theoreticly possible to work the O-ring into it's groove as mk e describes, but I gave up after fighting it for a couple of hours. Maybe if you make some kind of a tool to expand the 0-ring into place. However, the 0-ring is going to get cut up somewhat by the threads as the stud is screwed back in.

    DONE THAT:
    As a last ditch attempt to avoid pulling the timing cover again, I did exactly that. Really packed the RTV into the hole before inserting the stud. That way when the stud went in, it squeezed the RTV into every possible nook & cranny. Did this back in '02 or so & it's still holding.
     

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