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Thread: Oil leak when cold near oil cooler.. no leak when warm

  1. #1
    David Sperow Davz912/911's Avatar
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    Oil leak when cold near oil cooler.. no leak when warm

    That’s what I’m dealing with. Completely dry up top.
    I’m thinking oil thermostat stuck open allowing cold thick oil
    to the cooler, causing seals to leak?
    So now I’m trying to pull it... not happening, any tricks?
    I’ve tried prying it up, but no go.
    Or is it something else completely?

    Thanks in advance,
    Dave
    911S registry #1103
    R-Gruppe #513
    1967 912 converted to 2.2
    Period Dune Buggy


    Some drive Porsches' to be seen.....
    I prefer it when nobodys looking.

  2. #2
    I just removed my thermostat the other day during disassembly of my engine and this is the tool I used. There is just enough gap between the case and the base of the thermostat to insert the edge of the pry bar. The pry bar is available at Harbor Freight. Very cheap. The O ring creates a little resistance, but it came right out.
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    1969 911S
    1969 Datsun 2000...worth less, but more valuable

  3. #3
    Senior Member
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    The nail removing end of a claw hammer works pretty well as a pry bar.
    Tom Butler
    1973 RSR Clone
    1970 911E
    914-6 GT Clone in Progress

  4. #4
    David Sperow Davz912/911's Avatar
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    Thanks Tom, tried that, no luck. Theunz, ordered one up, thanks for the advice.
    Currently soaking area with PB Blaster.

    Dave
    911S registry #1103
    R-Gruppe #513
    1967 912 converted to 2.2
    Period Dune Buggy


    Some drive Porsches' to be seen.....
    I prefer it when nobodys looking.

  5. #5
    David Sperow Davz912/911's Avatar
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    Sep 2006
    Location
    South San Francisco
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    Got it out... found it open around 3mm. Adjusted it to fully closed, stuck it on the stove top.
    Full open @180-190 (cheap meat thermometer). O-ring came in today. Re-installed thermostat.
    No leaks! Will run it this weekend to confirm proper operation.
    911S registry #1103
    R-Gruppe #513
    1967 912 converted to 2.2
    Period Dune Buggy


    Some drive Porsches' to be seen.....
    I prefer it when nobodys looking.

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