1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

50/50 haldex mod

beachbuggy Jun 26, 2013

  1. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    I found out there are two types of Haldex ( early and late as normal ) so i will find out which one i get first and the first person to send me one will get the modification bit for free
     
  2. jojo

    jojo Looking for Boost! Staff Member Moderator Team Daytona Audi S3 quattro Audi A6 Audi Avant Owner Group

    28,998
    3,652
    113
    Does this apply to performance versions?
     
  3. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
  4. chaz20vt

    chaz20vt Member

    428
    21
    16
    Is this mod going to be for sale in the future andrew?
     
  5. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
  6. chaz20vt

    chaz20vt Member

    428
    21
    16
    What will this mod actually do?
     
  7. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    Read the first page

    Are Haldex systems as standard have a 80/20 ish torque split

    This modification will turn it into a 50/50 split
     
  8. chaz20vt

    chaz20vt Member

    428
    21
    16
    Subscribe now
    Can't wait for this to happen
     
  9. Sam_

    Sam_ Down under

    3,038
    480
    83
  10. superkarl

    superkarl MAN OF STEEL

    9,610
    2,481
    113
    The stock system does send 50% to the rear, its just v slow, and rarely does it. Thats what vag publish anyway, all the haldex allow 50/50.
    What would great is permanent 50 split, but system still allows slip for turning etc.
     
  11. Sam_

    Sam_ Down under

    3,038
    480
    83
    The only difference between the orange and blue is that the orange stays engaged under braking and can often result in the groaning during low speed manoeuvres (parking etc). The blue disengages under braking.

    Mines been great. I never get any diff groaning or noises from struggling tyres :)

    This might be a good solution since the aftermarket controller prices have rocketed.
     
  12. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
  13. Sam_

    Sam_ Down under

    3,038
    480
    83
    Surely you'd just want to mimic the behaviour of the blue controller or do you want it under braking too? I'm not sure there's much point adjusting the bias is there? Since you can't transfer more than 50% to the rear?
     
  14. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    I might copy the insert first

    50/50 isn't really ideal so i was thinking of making a simple adjust so you can have a 60/40
     
  15. Sam_

    Sam_ Down under

    3,038
    480
    83
    Why is 50/50 not ideal? Obviously more rear would be better. If only it was possible :(
     
  16. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    I wouldn't want any more at the rear with the power levels I have
     
  17. daz-20vt

    daz-20vt Well-Known Member

    2,836
    584
    113
    Hi Andrew. Sorry if im being stupid and im missing something. In the first post there is a pin being used. In thread 21 you show a dash dial and in thread 23 its an lcd display yet you say it will be like all of them but half price. Prices on these vary between 130 and 950 euros. Which route is it and is your plan based on the pin idea also. Sorry if im missing something. Sure i probably am. Daz
     
  18. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    I will be making the insert as shown on thread 1 then look into the other shown
     
  19. daz-20vt

    daz-20vt Well-Known Member

    2,836
    584
    113
    Ahh ok thanks for clearing it up. Top work!! Really interested in this. My cars going to be used for trck when i finally get it back so a 50 50 split would be awesome i would think.
     
  20. phil miller

    phil miller Well-Known Member VCDS Map User

    1,211
    166
    63
    hmm ive got a haldex 65335 code and have thought mine isnt as it should be, im interested in this out come and will have to do something soon tbh

    good work Andrew
     
  21. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    As I said before I just need to borrow a haldex controller.

    There are two types of controller so I may need to borrow two of them so I can it covers them all
     
  22. chaz20vt

    chaz20vt Member

    428
    21
    16
    How long would you need one from?
     
  23. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    A few months maybe

    any person that lends me the haldex gets the insert free
     
    Westy likes this.
  24. chaz20vt

    chaz20vt Member

    428
    21
    16
    What's the price on a second hand one
     
  25. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    Ive seen them go for £100+

    I would buy one myself but i don't have the spare cash this few months as more imported things have to be paid for first
     
  26. daz-20vt

    daz-20vt Well-Known Member

    2,836
    584
    113
    So do you need a faulty one or is this just incase your plan doesnt work lol. Could you still use the car without it fitted?
     
  27. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    I was after faulty one so i could strip it down without worrying about damaging it

    You would need the Haldex fitted
     
  28. superkarl

    superkarl MAN OF STEEL

    9,610
    2,481
    113
    the insert would do what the blue controller does and more.
     
  29. Sam_

    Sam_ Down under

    3,038
    480
    83
    According to the table, it'll result in more diff groaning at low speed and leaves the rear engaged under braking and handbrake. That seems to be where the differences end?
     
  30. Westy

    Westy Well-Known Member

    17,443
    1,105
    113
    I'm guessing haldex clutchs will wear out quicker if constantly engaged?
     
  31. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,879
    617
    113
    That's why I said I would make them adjustable so they could be wound back to standard
     
  32. Gops

    Gops Badger 5 Edition VCDS Map User Gold Supporter Audi S3

    3,198
    666
    113
    Sorry mate, I've been at work all day! I'm going home now to look for it
     
  33. chaz20vt

    chaz20vt Member

    428
    21
    16
    This will be epic if this is possible
     
  34. rupe

    rupe A3 TQS In Devon

    255
    35
    28
    I've possibly got a spare controller, but does anyone know the actual difference between the supposed non esp and esp controllers?
    Only reason I ask is my controller currently on the car, although working has oil migration through the wires to the rear plug, car is a facelift 2001 with esp, I have another controller but it's off a 2000 TT and am unsure if the TT had esp or not, so am unsure about swapping it out for mine.I guess I could plug it into the car without actually fitting it and if it shows up and I can run the output tests with vcds then it should be ok when fitted and driving?

    sorry to go slightly off topic, but it is sort of related ;)
    Hours of googling and I am none the wiser about esp and non esp controllers, their doesn't seem to be a definitive answer :think:
     
  35. Gops

    Gops Badger 5 Edition VCDS Map User Gold Supporter Audi S3

    3,198
    666
    113
    Found it! :)
     

    Attached Files:

  36. jezzy

    jezzy Member

    768
    16
    18
    I had your problem.
    oil migration to rear plug, it was the pre charge pump, not the controller.
    I could smell the burnt out motor in the pump when i removed from the car, oil leaked into the pump and ruined the motor.
     
  37. chaz20vt

    chaz20vt Member

    428
    21
    16
    Let's get it done Andrew :)
     
  38. rupe

    rupe A3 TQS In Devon

    255
    35
    28
    I did find a failed pump which I have replaced, but surely the oil can't of got from the pump up through the controller and too the plug where it connects to the car? which is the plug I was referring to, sorry for the confusion and sorry for the hijack again.
     
  39. superkarl

    superkarl MAN OF STEEL

    9,610
    2,481
    113
    if anything it will be the opposite, now, as standard the haldex coupling is constantly working the clutch pack based on so many variables, speed, throttle position, load, wheel spin etc.

    If theyre more locked all it will have to do is open up a little when turning.

    They are a 10plate wet clutch system too, pretty durable. Take more torque than people think. All the haldex drag cars still use stock haldex couplings with 6/7/800lbs torque goimg through them.
     
    Westy, s3dave and phil miller like this.
  40. jezzy

    jezzy Member

    768
    16
    18
    Mine has been fine since changing the pre charge pump.(no migrating oil in the plug.
    Yes the oil can migrate through the wires mate.
    quick read here if want to understand. VWVortex.com - Haldex pre-charge pump removal / disassembly PIC HEAVY
     

Share This Page