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Thread: cleaning/testing 912 oil cooler

  1. 11-01-2023, 05:41 PM #1
    caproader
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    cleaning/testing 912 oil cooler

    Guys,

    Is it allowed for me to ask if we know a source to clean and test a 1969 912 oil cooler? I noticed a serious oil leak dripping down from underneath the #3 cylinder today. Any source for a new oil cooler that I find does not have the top mounting tab on the 1969 912 oil cooler so if it is not the seals and I need a replacement oil cooler, it looks like I might need to restore the current one.

    BTW, does anyone know what the psi test pressure might be?

    Thanks

    John, member #322

    69 912
    73.5 Targa
    991.2 European Delivery
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  2. 11-01-2023, 07:59 PM #2
    bob joyce
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    try pacific oil cooler service
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  3. 11-01-2023, 07:59 PM #3
    Jon B
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    Quote Originally Posted by caproader View Post
    ...so if it is not the seals and I need a replacement oil cooler, it looks like I might need to restore the current one.
    Another possibility, which is unfortunately common on 356 and 912 engines, is a cracked crankcase under the cooler.
    But certainly check the seals and the cooler first.

    Jon B.
    Vista, CA
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  4. 11-01-2023, 09:53 PM #4
    SIMI BOB
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    Check the case for a crack under the oil cooler. The cooler can be checked if you have a fixture to do it, probably 50 PSI would do it. After you pressurize it, submerge in liquid to see if it bubbles. The case can be welded and machined. I have a cooler with the tab, also one with no tab. I also have a 912 case. Where are you located. PM me if you need any advice.
    Pacific Oil Cooler, 1677 Curtiss Court, La Verne CA., (800) 866-7335.
    Bob B
    Last edited by SIMI BOB; 11-01-2023 at 10:05 PM.
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  5. 11-02-2023, 10:02 AM #5
    caproader
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    Guys,

    Thanks for the help/advice. My first step is to get the engine out and identify the problem. am off to the garage now to start the process. More news as it develops.

    John
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