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Has the s3 got lsd,s

Discussion in 'A3/S3 Forum (8L Chassis)' started by s3dave, Aug 5, 2010.

  1. s3dave
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    s3dave TFSI Hybrid

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    [Aug 5, 2010]
    As above have we got limited slip diffs or dont they work like that with the Haldex?
    #1
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  3. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Aug 5, 2010]
    I dont think we have dave.
    #2
  4. S3 Nattie
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    S3 Nattie Quattro ist für sissies

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    [Aug 5, 2010]
    Haldex is a type of diff itself.

    Nathan
    #3
  5. Matt82
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    Matt82 Active Member

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    [Aug 5, 2010]
    you should have EDL

    electronic locking diff

    uses the abs sensors to detect slip then brakes the appropriate wheel to reduce slip.

    vag stuff has had it since 96-98 onwards. the S4 had it front and back so i bet youve got it too
    #4
  6. Matt82
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    Matt82 Active Member

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    [Aug 5, 2010]
    every car i can think of has a diff, but hes asking about locking ones
    #5
  7. S3 Nattie
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    S3 Nattie Quattro ist für sissies

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    [Aug 5, 2010]
    As Matt says, uses steering angles and abs sensor and yaw angle sensors (no sure if the S3 has yaw angle sensors) to distribute power between the front and rear and brake individual wheels.

    Nathan
    Last edited: Aug 5, 2010
    #6
  8. Matt82
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    Matt82 Active Member

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    [Aug 5, 2010]
    s4 had an older fashioned torsen. 60/40 natural rear split and could shuffle power upto 90% in each direction.

    haldex is definately more fancy i suppose its questionable whether its more effective *shrug*

    as for LSD. you need a field and some donuts!!
    #7
  9. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Aug 5, 2010]
    Haldex 4WD is more tyre friendly than torsion/permenant 4WD, its pretty effective on most normal powered cars but certainly on higher power cars the performance controller would be the way forward as I can catch the thing out on occasion...

    <tuffty/>
    #8
  10. s3dave
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    s3dave TFSI Hybrid

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    [Aug 5, 2010]
    it would be nice to have a controller to put the rears 100%..
    #9
  11. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Aug 5, 2010]
    what for? donuts? :)
    #10
  12. s3dave
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    s3dave TFSI Hybrid

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    [Aug 5, 2010]
    for some drifting....
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  13. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Aug 5, 2010]
    oh dear :)
    #12
  14. s3dave
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    s3dave TFSI Hybrid

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    [Aug 5, 2010]
    ??
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  15. jojo
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    jojo S3 Drift King! Staff Member Moderator

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    [Aug 5, 2010]
    I think it needs to be pointed out that Haldex is a clutch and not a diff.
    #14
  16. s3dave
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    s3dave TFSI Hybrid

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    [Aug 5, 2010]
    yes true, but then it runs the diff
    #15
  17. jojo
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    jojo S3 Drift King! Staff Member Moderator

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    [Aug 5, 2010]
    Hungry huh? Heard Dunkin' Donuts do many 'diff' flavours. lol
    #16
  18. Matt82
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    Matt82 Active Member

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    [Aug 5, 2010]
    i thought haldex was a diff... operated by a clutch
    #17
  19. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Aug 5, 2010]
    Haldex is the electronically controlled hydraulic clutch mechanism that controls drive to the rear diff... you could (in theory) remove the haldex unit and connect the prop direct to the rear diff but wouldn't make for a very nice drive without a centre diff/torsion wotsit me-jigger...

    <tuffty/>
    #18
  20. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Aug 5, 2010]
    why thank you kind sir.....i might have to 'go' git me one those :)

    mmmmm Wotsits

    :whistle2:
    #19
  21. Matt82
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    Matt82 Active Member

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    [Aug 5, 2010]
    right this is bugging me now. lets get to the bottom of it

    Haldex is a company
    Haldex Traction AB is a division of the Swedish manufacturing company Haldex AB. It specialises in the development and manufacture of All-Wheel Drive systems

    a 4wd vehicle can have a centre differential to apportion torque between the front and rear axles.

    what you call haldex is really a Haldex Traction LSC multi-plate clutch with ECU electronic control, acting as a center differential

    #20
  22. s3dave
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    s3dave TFSI Hybrid

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    [Aug 5, 2010]
    lol......................... i would get to the bottom of it but that is out of my league ....
    #21
  23. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Aug 5, 2010]
    as said its a clutch

    and to the op, no LSD fitted to S3 as std, although its posisble to add one to the gbox which would work on the front wheels
    #22
  24. Chlippo
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    Chlippo Member

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    [Aug 5, 2010]
    ^^^^^
    what he said.
    you can have a LSD but i dont think its worth the $
    i think it is 1300$ what tt owner paid to have a LSD from i dont remember whatcompany
    #23
  25. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Aug 5, 2010]
    #24
  26. finesse
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    finesse Active Member VCDS Map User

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    [Aug 5, 2010]
    good thread, great info
    #25
  27. S3KO4
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    S3KO4 Member

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    [Aug 5, 2010]
    The max torque the rear diff can handle I think is about 50% after that it would probably destroy itself. Hence the power distributions even with the performance controller you can not get anything above 50% to the back.

    The question is what would happen if you remove the front drive shaft? Silly I know but surely this would turn it into a RWD! As the ecu detects permanent slips on the front. ; )
    #26

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