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Thread: LSD standard or option on Z3 2.8?

  1. #1
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    LSD standard or option on Z3 2.8?

    I am just getting familiar with all the stats on 2.8 Z's and it seems like a 3.23 diff was standard but are more LSD or open? Is there a good website with lots of details on the different models, down to weights, brake diams, diff ratios, etc?

    Thanks in advance!
    Phil
    1999 318ti Sport, Open Air roof, Dinan CAI and software- FOR SALE!

  2. #2
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    I think i've read that LSD's only came on M models...correct me if I'm wrong.

  3. #3
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    Not true

    Quote Originally Posted by fmcfad01 View Post
    I think i've read that LSD's only came on M models...correct me if I'm wrong.
    My 2.3 has LSD. Not sure about what other models have
    ZZZING 2000 Z3 2.3 Oxford Green Beige/Black Sharked, StrongStrut , Whalen Knob, LeatherZ, M upper shock mounts, Koni Sport Shocks, SSR Competition Wheels, HIR bulbs, Oxford Green Hardtop

  4. #4
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    Quote Originally Posted by fmcfad01 View Post
    I think i've read that LSD's only came on M models...correct me if I'm wrong.
    Yep, your wrong. My 97 2.8l has the LSD, but I don't know if it was standard or an option.
    1997 Z3 2.8L Montreal Blue/Beige Ext. Leather.
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  5. #5
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    standard in all 6cyl models

  6. #6
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    Quote Originally Posted by Matt Day View Post
    standard in a 6cyl models
    Ah, maybe thats what I should have remembered!

  7. #7
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    Cool actually most '97's wouldn't have LSD....

    it wasn't an option and although some brochures mentioned it, LSD wasn't actually put into the schedule until late August 1997...leaving most '97's without...became standard on '98 2.8's...when confronted, dealers stated same song and dance which Z8's got when they discovered it missing from their rides as well: "electronic traction control is same thing"...so if anyone's '97 truly has LSD...very lucky indeed!...my '97 2.8 fully optioned, bought new,with a build date, of July, Z3#070XX..has an open diff(1428258/E8021J;3.15)...Z3 Cheers! dk

  8. #8
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    Quote Originally Posted by 96cali View Post
    I am just getting familiar with all the stats on 2.8 Z's and it seems like a 3.23 diff was standard but are more LSD or open? Is there a good website with lots of details on the different models, down to weights, brake diams, diff ratios, etc?

    Thanks in advance!
    Phil
    Standard. 2.8 manuals had 3.15s, S52 Ms had 3.23s, S54s had 3.15s

  9. #9
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    Thanks for the info, yes the manual diff ratio is what I was missing. I'll look for a '98 +
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  10. #10
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    wasnt there different models of LSD?

  11. #11
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    My '99 2.8 coupe has an open diff

  12. #12
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    Quote Originally Posted by bcausseaux View Post
    My '99 2.8 coupe has an open diff
    No it doesn't. It has a Torsen. Torsens behave just like an open diff in the simple "jack the rear up and spin" test.

  13. #13
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    Quote Originally Posted by DaneKane View Post
    it wasn't an option and although some brochures mentioned it, LSD wasn't actually put into the schedule until late August 1997...leaving most '97's without...became standard on '98 2.8's...when confronted, dealers stated same song and dance which Z8's got when they discovered it missing from their rides as well: "electronic traction control is same thing"...so if anyone's '97 truly has LSD...very lucky indeed!...my '97 2.8 fully optioned, bought new,with a build date, of July, Z3#070XX..has an open diff(1428258/E8021J;3.15)...Z3 Cheers! dk

    I don't mean to argue with you, but I'm looking at the factory equipment list that came with my car and it lists both All Season Traction AND Limited-slip differential separately as standard equipment on my car. The build date on my car is 04/97. Are you saying that's not true?
    1997 Z3 2.8L Montreal Blue/Beige Ext. Leather.
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  14. #14
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    so then traction control and LSD were available together? Interestingly the 318ti's were only offered with LSDs for one year until ASC+T was added though they work fine together.
    1999 318ti Sport, Open Air roof, Dinan CAI and software- FOR SALE!

  15. #15
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    Quote Originally Posted by JoshS View Post
    No it doesn't. It has a Torsen. Torsens behave just like an open diff in the simple "jack the rear up and spin" test.
    Then how do you inspect for LSD- look for a "S" tag on the diff itself?
    1999 318ti Sport, Open Air roof, Dinan CAI and software- FOR SALE!

  16. #16
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    I don't know what mine had stock, the previous owner replaced it with an M3 diff. Oh how do I find out exactly what the ratio is on my diff?
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  17. #17
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    Cool My 12/96 Diff. has a 3.15 LSD

    Which I removed and installed a 3.73 LSD from a E30.

    And yes the 3.15 passed the spin test!

    Regards
    Alx

  18. #18
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    Quote Originally Posted by Matt Day View Post
    standard in all 6cyl models
    Quote Originally Posted by JoshS View Post
    No it doesn't. It has a Torsen. Torsens behave just like an open diff in the simple "jack the rear up and spin" test.
    Can anyone tell me what I have in my 2001 3.0 Coupe? LSD? Torsen? What ratio?

    And can I get LSDs from 6-cyl models or from other chassis and install in my soon-to-be DASC'd M44 Z3?

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