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Thread: Heat Exchangers questions …1971

  1. 10-23-2021, 01:11 PM #1
    Simonjjb
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    Heat Exchangers questions …1971

    Just two questions….

    Installing the heat exchangers. It doesn’t look like the PET manual calls for any washers under the Nuts that attach the exchangers to the exhaust studs ?

    Just also wanted to also confirm that no sealant should be used ?
    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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  2. 10-24-2021, 03:55 AM #2
    fizeus
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    Quote Originally Posted by Simonjjb View Post
    Just two questions….

    Installing the heat exchangers. It doesn’t look like the PET manual calls for any washers under the Nuts that attach the exchangers to the exhaust studs ?
    Yes, washers under nut aren't required, it's a really tight space so it better to have a good drag on the nuts. Also consider that thermal stress on washers can reduce tightening between surfaces leading the exhaust leaks. I suggest to only use 12 bolts.


    Quote Originally Posted by Simonjjb View Post
    Just also wanted to also confirm that no sealant should be used ?
    If I remember well PET report a mounting paste ... it's not a *must* but it should be a lube paste to be placed between screws and bolds to prevent stucking
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  3. 10-24-2021, 06:45 AM #3
    Richy
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    No washers or sealant , but definitely anti-seize on the threads .
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  4. 10-24-2021, 07:55 AM #4
    Simonjjb
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    Thanks guys
    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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