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Thread: Oil leak at oil line

  1. #1
    Senior Member Simonjjb's Avatar
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    Oil leak at oil line

    Finally figured out where the oil was leaking from. You can see in the close up photo where some oil is leaking at the inside fitting where the fitting meets the sealing ring. I have tightened these up until they wonít move - although itís not easy when they are installed in the engine bay to get enough leverage without feeling like you will break something.

    I guess my only choice is to remove that fitting and replace the sealing ring and try again. One question / is there any type of sealant or otherwise that I could use on the threads ?

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    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow

  2. #2
    Member #226 R Gruppe Life Member #147
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    I just rebuilt a 70 console and thermostat. I applied the thinest film of 574 to the seal ring only and installed fittings one at a time to super clean contact surfaces. I’m expecting no leaks. I’m not a glueber but these things are old enough to take every precaution. Once in the car any remaining seeping at junctions, you can at least counter hold fittings to tighten the nuts on the piping. I also use optimoly on all the fitting interfaces and threads.

  3. #3
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    Permatex 59214 high temperature thread sealant. It not difficult to remove later, is oil and gas resistant, and it works. Doesn't take much.
    - 1969 911T Ossi Blue #3981

  4. #4
    If you do happen to disassemble that fitting from the aluminum console you might consider some sort of sanding block on that seal seat to insure flatness.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  5. #5
    Senior Member Simonjjb's Avatar
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    Thanks all. Will take apart and reinstall
    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow

  6. #6
    Senior Member Simonjjb's Avatar
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    Removed the fitting. I see I have two different washers. One is flat and one rounded. The sealing ring is PorscheG90012301130. Could I use the rounded one for a better seal ?

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    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow

  7. #7
    member #1515
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    That sure looks like it is made for a round seal. I think a copper sealing ring would be easier to seat.
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs

  8. #8
    That fitting is odd, it is supposed to be a flat aluminum ring, but there sure doesn't appear to be a seat for it.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  9. #9
    Member #226 R Gruppe Life Member #147
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    Those fittings are unusual because they are for the nut and ferrel pipes. The Alu seal rings are correct, the only round crush rings are used on the pressure relief screw cap. (Usually copper).

  10. #10
    Senior Member Simonjjb's Avatar
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    Contacted Brad. Replaced all the washers and reset everything. I did use a small amount of Permatex on the threads. Tightened everything up and no more leaks.
    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow

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