Results 1 to 7 of 7

Thread: 3.46 Differential

                  
   
  1. #1
    Senior Member Zchild's Avatar
    Join Date
    Jun 2004
    Location
    Columbia, Maryland
    Posts
    561

    Cool 3.46 Differential

    Hey there Gearheads and Bimmer dreamers I'm sure this thread has got history as well as legs, but I'm currently planning my next mod and have chosen upgrade my 2.93 differential on my 00 323i to a 3.46. I'm wondering has anyone upgraded and is 3.46 a little too ambitious and maybe I should consider the 3.15. Any-who, get back at me with opinions as I'm planning this upgrade for sometime in May 2K7. Happy Motoring...
    V/R Zachary Pullins Sr.
    Florida Suncoast Chapter BMWCCA
    2006 E90 325Xi & 1999 E39 540i M-Sport
    " Vision without resources is just hallucination"

  2. #2
    Are we talking about auto or manual? I don't think the 3.46 is too aggressive. It's probably a happy medium between better acceleration and revving way too high for highway driving.

  3. #3
    Senior Member Zchild's Avatar
    Join Date
    Jun 2004
    Location
    Columbia, Maryland
    Posts
    561
    Quote Originally Posted by ChosenGSR View Post
    Are we talking about auto or manual? I don't think the 3.46 is too aggressive. It's probably a happy medium between better acceleration and revving way too high for highway driving.
    Manual of course, sorry I didn't state that upfront, would the 3.15 give me a better combination?
    V/R Zachary Pullins Sr.
    Florida Suncoast Chapter BMWCCA
    2006 E90 325Xi & 1999 E39 540i M-Sport
    " Vision without resources is just hallucination"

  4. #4
    Senior Member
    Join Date
    Sep 2005
    Location
    Springfield, VA
    Posts
    106
    I too had a 2.93 in my '03 330Ci 5-speed and replaced the dif with new from BMW 3.38 used behind the 330 automatics.

    There are many pros and cons for placing a different ratio dif in a car and I certainly had my reasons and never looked back. But it would help us all to understand yours and given such can offer specific objective advice.

    I found the E46 Fanatics site to be a great resource. One useful Do It Yourself (DIY) post is
    http://forum.e46fanatics.com/showthread.php?t=145570
    and searching for other dif posts are particularly useful to gain relevant opinions.

    Greg

  5. #5
    Banned
    Join Date
    Jan 2005
    Location
    Clifton, VA
    Posts
    570
    If you are going through all that trouble you may want to consider a limited slip or a quaiffe(sic) diff.

    Deal with a reliable seller. And change the fluid to Redline soonest.

    Also consider replacing anything that may fail later on seals, bearings, CV joints, boots etc.

    Dave Apker and the collies

  6. #6
    Senior Member 1996 328ti's Avatar
    Join Date
    Jun 2004
    Location
    Greenville, SC
    Posts
    3,450
    I don't know the different gear ratios from your tranny to mine, but. . .
    At 80 mph I'm reving at around 3800 rpm.
    I don't like having the revs above 4K for any length of time.
    Between all the solid bushings I have, there is a lot of buzzing and vibration.
    ...steven
    BMW CCA #146825

    318ti.org | bmwcca.org/forum

  7. #7
    Junior Member rodpaine's Avatar
    Join Date
    Jul 2006
    Location
    Purcellville, VA
    Posts
    18
    I just put a 3.46 LSD in my '83 528e, replacing the 2.93 LSD and I documented the installation on my web site at this page http://mysite.verizon.net/vze7aq8e/id20.html. The 3.46 is turning out to be a very good choice, over the 3.25 and 3.64 ratios I investigated and drove, given the type of driving I do, which is long distance and rural.
    FWIW,
    -Rod
    Last edited by rodpaine; 04-23-2007 at 08:14 AM.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Procedure for radiator flush?
    By madkow70 in forum Do It Yourself
    Replies: 18
    Last Post: 11-05-2006, 10:41 PM
  2. ok to jack on the differential?
    By beckley in forum Do It Yourself
    Replies: 6
    Last Post: 11-30-2005, 05:07 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
  •