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Thread: J-B Weld on Crankcase Freeze Plugs

  1. #1

    J-B Weld on Crankcase Freeze Plugs

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    Hello to All

    This is a photo of my partially cleaned up flywheel crank end - a 2.2L mag case. There remains some kind of coating which
    appears to have flaked off of the freeze plugs. The plugs themselves appear to be in good condition.
    Should these be re-sealed (post final clean-up) with JB Weld or is there some other recommended sealer?

    Thanks in advance
    Cheers
    JB
    Success is not final, failure is not fatal: it is the courage to continue that counts. - Winston Churchill

    Early 911S Registry Member #3749

  2. #2
    I was instructed by a highly respected Porsche mechanic to use JB Weld on the cam cover plugs. I would assume the same holds true for your plugs.
    1969 911S
    1969 Datsun 2000...worth less, but more valuable

  3. #3
    Senior Member BrentF's Avatar
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    This may be a dumb question, but why does an air cooled engine need freeze plugs?
    Brent
    '70 911S
    '68 TR250

  4. #4
    Although Hawkeye called them freeze plugs, as Theunz pointed out they are actually camshaft plugs. We will, perhaps never know these two respondents actual names, but at least now we know it is appropriate to apply something that makes oil seepage less probable. Yes, as air cooled engines these 911s don't need freeze plugs.

  5. #5
    I must admit "freeze plug" was a throw-away term as I was unsure of the correct terminology or nomenclature identifier for those plugs. I understand they're installed to close off casting galleries necessary for manufacturing engine block crankcases. Apologies for the confusion.

    Cheers
    JB
    Success is not final, failure is not fatal: it is the courage to continue that counts. - Winston Churchill

    Early 911S Registry Member #3749

  6. #6
    Member #226 R Gruppe Life Member #147
    Join Date
    Feb 2009
    Location
    Portland, Oregon
    Posts
    2,355
    Porsche glued in oil galley plugs like that. On overhauls where a plug is left in we smear a little epoxy over the plug.

  7. #7
    That started with type 4 motors which on occasion spit out plugs, especially the ones by the oil cooler if I remember correctly.

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