Results 1 to 8 of 8

Differential Cover Leaking .... bolts backing out

This is a discussion on Differential Cover Leaking .... bolts backing out within the General Help forums, part of the LSx Technical Help Section category; Since I've done the transmission, converter and poly tranny mount, my diff cover bolts are backing themselves out. I'm sure ...

  1. #1
    Member 79Firebird_99TA's Avatar
    Join Date
    Apr 2007
    Location
    ATL
    Posts
    242

    Black
    99 Trans Am

    Differential Cover Leaking .... bolts backing out

    Since I've done the transmission, converter and poly tranny mount, my diff cover bolts are backing themselves out. I'm sure this is due to vibration.

    I'm going to go back to the rubber mount and some lock tight on the bolts as well. 2 are already completely gone.

    Anyone had this experience? This is weird as hell. Also is the stock 10 bolt aluminum? I read somewhere that the torque is 22 ft/lbs. I am fearful of torquing it down that much. I think I may have already stripped a couple..... sigh.

  2. #2
    Smiles for 9.5 Years cammed goat's Avatar
    Join Date
    Jan 2009
    Location
    Paterson/Ridgewood, NJ
    Posts
    11,474

    Phantom Black Metallic
    2004 GTO M6

    I think the stock rear is iron or steel. I don't think it's aluminum. You might have just stripped the bolts and not the holes in the rear. If the holes are stripped, look for a Helicoil kit from your local parts store.

  3. #3
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
    Join Date
    Feb 2009
    Location
    Pittsburgh
    Posts
    9,965

    White
    2008 Hummer H3

    Quote Originally Posted by cammed goat View Post
    I think the stock rear is iron or steel. I don't think it's aluminum. You might have just stripped the bolts and not the holes in the rear. If the holes are stripped, look for a Helicoil kit from your local parts store.
    This... and, lock tight should always be used when possible..

    Blue stuff will do just fine, the red stuff can be a bear to get loose again if ever..lol

    Stock housing is iron, cover is stamped steel..

  4. #4
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    First I have heard of this issue. I installed the cover on my 12 bolt with a dab of adhesive black silicone on the threads and have had no issues. Use brake cleaner (carefully) and compressed air to clean the bolt holes thoroughly and also clean your bolts before reinstalling them to remove any oil. Then apply a drop or two of blue Loc-Tite to each bolt as recommended above.

  5. #5
    O U 8 1 2 Spaz's Avatar
    Join Date
    Nov 1999
    Location
    over here...
    Age
    39
    Posts
    25,692

    []D [] []V[] []D
    1999 trans am

    i've never heard of this happening... going back to a rubber mount will not change anything for that problem...

  6. #6
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
    Join Date
    Feb 2009
    Location
    Pittsburgh
    Posts
    9,965

    White
    2008 Hummer H3

    +3.. Also agree with Jeff about cleaning out the bolt holes..

    Oil or lube, even left over sealant can cause issues with thinking a bolt is tight when really it may not be tightened enough..

    Remember also if you use locktite, to only apply a small amount to the bolt threads only..

    Applying it into the bolt holes can/may have the same effect as having debris or oil/sealant in the holes and may not tighten enough/properly..
    Last edited by Smittro; 10-20-2011 at 05:51 AM.

  7. #7
    Member 79Firebird_99TA's Avatar
    Join Date
    Apr 2007
    Location
    ATL
    Posts
    242

    Black
    99 Trans Am

    Good info ... thanks all.

    Turns out that it was not leaking again after torquing it down tight. It had rained and smelled and looked like a leak again. So we're good to go ... but I am going to do the blue loc-tite!!

  8. #8
    Smiles for 9.5 Years cammed goat's Avatar
    Join Date
    Jan 2009
    Location
    Paterson/Ridgewood, NJ
    Posts
    11,474

    Phantom Black Metallic
    2004 GTO M6

    Even if you smell gear oil, it doesn't necessarily mean the rear is leaking. It is the heat/pressure escaping through the vent. I did some reading on the rearend in my car because mine gives off the odor, but there is no leak. Apparently the rears are designed to vent the heat/pressure to atmosphere.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Fluid Leaking From Tube to Differential Joint?
    By slade8200 in forum Drivetrain
    Replies: 0
    Last Post: 09-24-2014, 08:10 AM
  2. Differential Cover Leaking & bolts backing out Solved!!
    By 79Firebird_99TA in forum General Help
    Replies: 3
    Last Post: 06-16-2012, 03:35 PM
  3. For Sale: SLP/AAM Cooling Differential Cover
    By '02 WS6 in forum Parts For Sale / Trade
    Replies: 4
    Last Post: 02-17-2012, 04:11 AM
  4. Replies: 4
    Last Post: 04-26-2007, 04:11 AM
  5. 1995 Z28 differential cover?
    By dkishton1486 in forum Drivetrain
    Replies: 2
    Last Post: 05-05-2006, 09:56 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •