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weeping threads

Discussion in '308/328' started by lostbowl, Mar 12, 2010.

  1. lostbowl

    lostbowl Formula 3

    Apr 30, 2009
    1,246
    Michigan
    Full Name:
    Tom
    After seeing 23 quarter size spots of oil on the floor I realize that the threads on the studs for the oil pans are leaking and I have read here that some have used acorn nuts to solve this problem. Has anyone used nylok nuts with sucess? Needless to say other suggestions are welcome. thanks, lost
     
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  3. Steve King

    Steve King F1 Rookie

    Feb 15, 2001
    4,366
    NY
    I changed all of mine to nylok SS nuts. Dried everything up and looks good.
     
  4. lostbowl

    lostbowl Formula 3

    Apr 30, 2009
    1,246
    Michigan
    Full Name:
    Tom
    Thanks for the reply, nylocs will be fitted. lost
     
  5. Robz328

    Robz328 F1 Veteran
    Silver Subscribed

    Mar 16, 2009
    5,856
    ATL, Georgia
    Full Name:
    Rob Hemphill
    I think this is a good idea, but, does anyone know the temerature limits of nylon.
    BTW, I also am replacing the studs on engine and gearbox pans....some were stripped from over-torque. The closest torque value I see in the tech manual is for the cam covers at 6.5 ft-lb. I would thus torque the pan studs about that much and tighten slightly if needed and not above 10 ft-lb. If nylon is good, use them without locktite, otherwise a small drop of blue should hold well with std nuts.
     
  6. ramosel

    ramosel Formula 3

    Sep 11, 2004
    1,236
    Meadow Vista, CA
    Full Name:
    R Moseley
    Most nylok (ESNA) makers quote temp. limits at or just below 250° F.

    Rick
     
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  8. stacy

    stacy Karting

    Nov 2, 2003
    104
    halifax
    use 'statoseal' washers under the nuts.

    if you search the archives you will find stuff on these. they are a washers with oring bonded into it.

    worked for me.
     
  9. lostbowl

    lostbowl Formula 3

    Apr 30, 2009
    1,246
    Michigan
    Full Name:
    Tom
    My first thought was to use sealing washers but I could not find them in 6mm. Has anyone tried #12? lost
     
  10. ramosel

    ramosel Formula 3

    Sep 11, 2004
    1,236
    Meadow Vista, CA
    Full Name:
    R Moseley
    Parker "Stat-O-Seal" products are designed to be used under the head of a bolt. For stud and nut applications they make a product called "ThredSeal". Much better product for this application.

    Rick
     
  11. moysiuan

    moysiuan Formula 3
    Silver Subscribed

    Nov 1, 2005
    2,168
    Canada
    Hex Seal Nuts

    --------------------------------------------------------------------------------

    http://www.apmhexseal.com/self-sealing_nuts.aspx

    Aerospace grade silicon material bonded to the nut, it is a leakproof seal that worked for me. Not cheap, but should be good for a lifetime, and the sealing material is rosso corsa coloured .
     
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