1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Gasket or RTV for FJ40 3rd members ??

Discussion in '40- & 55-Series Tech' started by cmilliron, Feb 8, 2003.

  1. cmilliron

    cmilliron

    Messages:
    39
    Likes Received:
    0
    Joined:
    Nov 3, 2002
    I have noticed on several online "How to" Differential R&P or Locker articles, that everyone appears to use paper gaskets for 3rd member installation.  

    I have always used Copper RTV on Dana Diff Covers.  Is there a specific reason to use the paper on Cruiser 3rd members?

    I have always felt that RTV is much easier to clean and re-prep.

    Opinions please
     
  2. Gumby

    Gumby Supamod Staff Member s-Moderator

    Messages:
    11,778
    Likes Received:
    307
    Joined:
    Dec 13, 2002
    Location:
    Knee deep in hookers and gin
    Re: Gasket or RTV ??

    I can't think of a single good reason not to use RTV on a diff cover. It's a lot easier to carry in the toolbox and somewhat easier to clean. I'm not sure why you would use copper. Isn't that the high heat stuff?
     
  3. cmilliron

    cmilliron

    Messages:
    39
    Likes Received:
    0
    Joined:
    Nov 3, 2002
    Re: Gasket or RTV ??

    just had the better luck with sealing with copper than blue or black....

    but my question is specific to FJ40 3rd members....

    Did not know if the gasket is critical to axle alignment or ring gear clearance to the axle housing....
     
  4. HawkDriver

    HawkDriver

    Messages:
    3,218
    Media:
    64
    Likes Received:
    8
    Joined:
    Feb 1, 2002
    Location:
    No. Ogden, Utah
    I prefer to use a gasket on covers, and blue RTV on the 3rd member. Never had a problem with gear clearances or leaks.

    Just my preference.
     
  5. rocrawler

    rocrawler

    Messages:
    69
    Likes Received:
    0
    Joined:
    Sep 11, 2002
    I use RTV onb the trail and gaskets when working at home.
     
  6. nuclearlemon

    nuclearlemon not an addict Moderator

    Messages:
    15,588
    Media:
    87
    Likes Received:
    403
    Joined:
    Jan 30, 2003
    Location:
    meh-ico, colorado
    one or the other, not both. the problem with rtv leaking may be the ingredients...silicone based rtv will break down when exposed to oils...try "right stuff" by permatex.