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Thread: excessive oil pressure

  1. 10-21-2010, 11:45 AM #1
    blucille
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    excessive oil pressure

    so, I bought the hotrod in april, I guess I can say I hadn't driven it in really cool temps until this past weekend.

    oil pressure was always on the high side of normal, I'd see 100psi at startup...

    until this past weekend, very cool temps (40's) at a DE at watkins glen, I'd see almost 140 at startup, got me nervous.

    got to looking at the 3.0L oil sender, looks like it's setup for an SC gauge, part number 911-606-111-01, so I ordered a correct '72 sender calibrated for a 140 or 150psi gauge, hope that fixes the problem.

    anyone see flaws in my logic?

    Lewis
    looking for 1972 911t motor XR584, S/N 6121622
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  2. 10-21-2010, 02:28 PM #2
    John Straub
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    That should work...it fixed my problem.

    John
    1959 356 Coupe, 1600 Super, sold
    1960 356 Roaster, race car, SCCA, sold
    1960 356 Roadster, show car, sold.
    1962 356 Cab, show car, sold.
    1965 911 #301111, Red Book Vol 1 "Cover Car," owned 54 years.
    1967 911 #307347, bare-bones, some road wear, a little surface rust, and a few dents..., owned 14 years.
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  3. 11-02-2010, 07:33 AM #3
    blucille
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    ok, so which is the correct oil pressure sender?

    It seems there are 2 different thread sizes, smaller and larger....since I have oil fed tensioners, I need larger....but it needs to be calibrated to my gauge, which is 100psi, or I guess 7 bar.

    thanks
    Lewis
    looking for 1972 911t motor XR584, S/N 6121622
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  4. 11-02-2010, 08:38 AM #4
    tom1394racing
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    Lewis

    I have a 3 liter in my '73 using the original '73 gage. I can help you with the right combination of hardware and sender to make yours work properly.

    Send me an email and I'll get you the details
    Tom Butler
    1973 RSR Clone
    1970 911E
    914-6 GT Clone in Progress
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  5. 11-03-2010, 02:42 AM #5
    66S
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    The oil pressure relief valve can stick and cause high oil pressure.
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