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Differential gasket - needs sealant?

Discussion in '60-Series Wagons' started by Spanky Pete, Aug 26, 2009.

  1. Spanky Pete

    Spanky Pete

    Messages:
    311
    Location:
    Oregon
    I am about to put the third member back together and I am not sure about the gasket. I have read the diff cover gasket, which is cork, doesn't need any sealant, just set it up dry.

    The 3rd member to axle gasket from toyota is a different thinner paper material. Should I lay a bead of permatex on there?
  2. GLTHFJ60

    GLTHFJ60 Rum Runnin' SILVER Star

    Messages:
    13,228
    Location:
    Durham, NC
    Don't need to, but it can't hurt. I've done both with the dry toy gasket and with just RTV. Neither leaked.
  3. BGarcia88FJ62

    BGarcia88FJ62 SILVER Star

    Messages:
    838
    Location:
    Calhoun, Ga.
    I've never used anything more than the gaskets. Unless you mauled it getting it off and bent or put a groove in it or something gaskets are all you need IMO.
    :beer:
  4. KLF

    KLF Frame waxer SILVER Star

    Messages:
    5,337
    Location:
    Southern NH
    I always use a gasket, with a thin bead of RTV on both faces. Reason is for removal: when you need to take it back out, the gasket will split. But the layer of RTV will make peeling it off with a razor scraper much easier.
  5. cruiser88

    cruiser88

    Messages:
    11,888
    Location:
    WV
    I never have used a gasket.......just permatex:beer:
  6. specialk396

    specialk396

    Messages:
    458
    Location:
    Waynesboro, Va
    RTV

    I use either RTV and gasket or RTV only, depending on if I have the paper/cork gasket. On a thick mounting flange like is on these diffs, RTV should be fine.
  7. nuclearlemon

    nuclearlemon not an addict Moderator

    Messages:
    14,314
    Location:
    meh-ico, colorado
    i've never used any sealants outside of hightack to keep the gasket in place when i stabbed the diff.
  8. wengejor

    wengejor

    Messages:
    1,226
    Location:
    CinCinNati Ohio
    I just swapped 4.11's into my truck last week...I didn't use sealant on both and the rear didn't leak, but the front did. I used a razor blade to remove the old gasket material, but the front didn't seal up. I had to drain it, loosen it up and put some goop on it. I didn't fill it back up yet...giving it a few days to cure before refilling it w/ 90w.
  9. I hate to admit how many Toyota center sections I've pulled, I always removed the gasket and used RTV only, never had a leak. RTV is used by many axle manufactures these days, and no gasket.
  10. zebrabeefj40

    zebrabeefj40

    Messages:
    3,095
    Location:
    southeastern IN
    I've had better luck with RTV only than with any combination of gaskets and goop on diffs... YRMV!

    :cheers:

    Nick
  11. cruiser guy

    cruiser guy

    Messages:
    1,352
    Location:
    Sandy, UT
    I have always used rtb, its pretty forgiving if you get a skinny bead in an area, and removing it isn't all that bad either

  12. rusty_tlc

    rusty_tlc Dain Bramaged Member Moderator

    Messages:
    11,469
    Location:
    Reno, NV
    What are these "gaskets" of which you speak?:confused:
    [​IMG]

  13. That's the one! That is an actual Dodge part, they don't use gaskets on their diffs, just the Ultra Grey specificly.
  14. ntsqd

    ntsqd technerd

    Messages:
    4,716
    Location:
    Upper So. CA
    I used the "Right Stuff" when I put the FF in. I've used it on an NP241's cases as well. No leaks. Not looking forward to taking either apart, but I didn't put it together intending to take it apart anytime soon.

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