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Thread: oil leakage from valve cover

  1. #1

    oil leakage from valve cover

    Hi,

    a lot has been writen on this topic....
    I only have a question what sealant could help fixing the issue shown in the picture.

    I suspect that this cut shown in the picture(even if it is not over the full surface) causes my annoying oil dripping. Or it sneaks through the thread and nut.
    Does anyone has experience supporting the normal gasket with 574 or CurilT....
    Initially for the cut but maybe also on the thread?

    Thanks for reading and hopefully someone can give me a direction here!
    Bart
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  2. #2
    Senior Member
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    Use some silicone on the gouge . Are the covers warped ? Flat covers and silicone gaskets = no leaks and the gaskets are reusable and no sealant required . Available at Pelican Parts .

  3. #3
    I have a large flat piece of steel that I use with sandpaper adhered to remove the warpage from the covers. I check them first with a straight edge to see how twisted they are first then check again when done. I shoot for .002-.003" of warpage when done.

  4. #4
    Senior Member
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    i am a huge fan of Toyota FIPG - I've used on bits like this, and it will seal and handle the heat (for years). (Choose the black stuff - not the red). https://www.amazon.com/Genuine-Toyot.../dp/B000EDDTV0 - there's an example. Yes yes yes, I know it's a Porsche, but its a high-temp form in place gasket.

    I've used it on about every vehicle I've had in some form or fashion. If both surfaces are CLEAN (use a chemical cleaner or a lacquer thinner) to prep the surfaces after cleaning, then use a thin layer of FIPG on each side of the gasket. It will not leak. YMMV.

  5. #5
    Senior Member jim amato's Avatar
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    n.e. ohio
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    i would use anaerobic sealer, loctite #38657
    registry #2072

  6. #6
    Serial old car rescuer Arne's Avatar
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    I second the recommendation for Toyota FIPG. Absolutely the best product of that type I've used in over 40 years of working on cars.
    - Arne
    Current - 2018 718 Cayman, Rhodium Silver, PDK

    Sold - 1972 911T coupe, Silver Metallic; 1984 911 Carrera coupe, Chiffon white; 1973 914 2.0, Saturn Yellow; 1984 944, Silver Metallic

  7. #7
    Thanks a lot for all replies!

    I am waiting for some parts and will let you you know which solution worked best ;-)

  8. #8
    I have found in many cases the leakage points are around the stud holes of the cover. Using an end mill to resurface the washer seat will cure a lot of leaks.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  9. #9
    Gentlemen,

    I used the silicon bead gaskets and so far bone dry ;-)
    Probably one of the many solutions for the same problem!

  10. #10
    Senior Member
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    Quote Originally Posted by Richy View Post
    Use some silicone on the gouge . Are the covers warped ? Flat covers and silicone gaskets = no leaks and the gaskets are reusable and no sealant required . Available at Pelican Parts .
    this has been the best solution in my experience as well. just make sure you follow the instructions for torqueing the nuts. these also hug the studs much more tightly which help prevent leaks past the stud openings.
    Bill

    Early 911S Registry Member #4087
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    '72T hotrod 210 0228
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    '97C4S (sold - and regretting it)

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