Welcome to ZRoadster.org - BMW Z1 Z4 Z8 Z3 Forum and Technical Database

If you want to join in with the discussion, and see the areas which are available only to members then sign up now!

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

Rear roll bar drop links

Discussion in 'Z3 Roadster & Coupé' started by Brian4, Apr 1, 2014.

  1. Brian4

    Brian4 Zorg Guru (IV)
    British Zeds East Anglian Crew

    Joined:
    Dec 23, 2011
    Messages:
    2,546
    Likes Received:
    2,027
    Trophy Points:
    173
    Location:
    Hinckley/Burbage
    Model of Z:
    Z3 3.0i Auto
    I changed the rear drop links a week ago and on the drive to and from Sussex at the weekend I noticed that the rear is a lot more stable especially on the bumpy local roads.
    The drop links didn't look bad but when I compared them to the new ones the hole for the rollbar was much smaller and there were some cracks in the rubber and they had started to come unbonded from the metal.

    So for the sake of £15 worth doing anyway.
     
  2. Mint

    Mint Zorg Expert (I)
    Supporter British Zeds East Anglian Crew

    Joined:
    Sep 23, 2012
    Messages:
    9,224
    Likes Received:
    6,237
    Trophy Points:
    212
    Location:
    Staffordshire, UK
    Model of Z:
    1st Z3 | 2.2 | Sport | Individual 2nd - Z3 | 3.0 | Sport
    Getting ready for Sunday Brian?
     
  3. GazHyde

    GazHyde The Gaz Monkey
    Staff Member Administrator Global Moderator British Zeds

    Joined:
    Dec 2, 2011
    Messages:
    15,187
    Likes Received:
    9,329
    Trophy Points:
    226
    Location:
    Newbury, Berkshire
    Model of Z:
    BMW Z4 3.0Si Sport
  4. ge45ton

    ge45ton Zorg Legend
    East Anglian Crew The M44 Massive

    Joined:
    Mar 1, 2013
    Messages:
    102
    Likes Received:
    59
    Trophy Points:
    76
    Location:
    Cambridge
    Model of Z:
    1.9 M44
    Just ordered a pair as well, I've got to do the rear pads and clean/adjust the shoes so might as well do these too while I'm there. :happy:
     
  5. zedonist

    zedonist Guest

    Its not a big job, two bolts, one either side remove these then waggle off the roll bar, to refit just need to lube up and push onto the roll bar before you tighten the bolts up, do it with the car on the ground slightly raised, wheel off will help of course.
     
    • Like Like x 1
  6. GazHyde

    GazHyde The Gaz Monkey
    Staff Member Administrator Global Moderator British Zeds

    Joined:
    Dec 2, 2011
    Messages:
    15,187
    Likes Received:
    9,329
    Trophy Points:
    226
    Location:
    Newbury, Berkshire
    Model of Z:
    BMW Z4 3.0Si Sport
    May well add this to the list when I do the rear brakes then.
     
  7. Brian4

    Brian4 Zorg Guru (IV)
    British Zeds East Anglian Crew

    Joined:
    Dec 23, 2011
    Messages:
    2,546
    Likes Received:
    2,027
    Trophy Points:
    173
    Location:
    Hinckley/Burbage
    Model of Z:
    Z3 3.0i Auto
    I probably made take longer than needed but this is what I did.

    I did the links at the same time as cleaning up the springs and rear arms so I took all apart one day and reassembled next day.

    Jacked up and supported on axle stands under rear jacking points.

    Remove both wheels.

    Removed the bolts from base of shock absorber (18mm).

    Removed the nuts from the drop-link brackets to rear arm. (13mm)

    Lowered the rear arms and removed each spring and pads. The passenger side wasn’t so easy as I didn’t release the exhaust rubber support I now realise.

    Removed the spare wheel and carrier, and then the cage that fits to the body. The wire that is used to lift the cage up/down is screwed into the cage I think it is a 6mm spanner or adjustable!!. The rear is held up with a long bolts and a 10mm nut.

    (This makes removing the roll bar easier as the drop links are still fitted.

    Removed the nuts from the two roll bar bush brackets onto the car body. (13mm). These have a tab that fits in a slot in the body and stud/nut to secure them in place.

    Once this is done the whole roll bar can be wriggled out not forgetting which way round it goes, cos I did.

    Remove the bolt holding the link into the bracket these were pretty corroded nuts.

    Note which way the links are relative to the roll bar easy to get them 180 deg out’

    I then put the drop link in the vice and pulled wriggled the roll bar until it came off.


    Cleaned every thing up and painted the parts


    Fitted the links by lubricating the rubber with soapy water and pushing the link on the end of the roll bar, not easy but once it had started it went on ok.

    Line drop links up 75 deg as when they were taken off.

    Refitting is the reverse of dismantling. Replace all the nuts with new nylocs.


    Whilst it was all apart I cleaned and painted the springs and top of the rear arms. The underside is coated in a rubbery material I guess to stop stone chips etc.
     
    • Like Like x 3
  8. Brian H

    Brian H Zorg Guru (V)
    British Zeds Scottish Zeds

    Joined:
    Dec 5, 2011
    Messages:
    3,505
    Likes Received:
    2,551
    Trophy Points:
    195
    Location:
    Killin
    Model of Z:
    E36/7 3.0i - E85 Z4///M
    You have just cost me a small fortune Brian, new drop links ordered as well as a couple of new bolts, whilst looking on BMWFans for the part numbers I though I may as well get some new brackets and then a nuts for the brackets and then other nuts and so on and so on.............. got myself a wee job next weekend though :)
     
    • Like Like x 1
  9. Brian4

    Brian4 Zorg Guru (IV)
    British Zeds East Anglian Crew

    Joined:
    Dec 23, 2011
    Messages:
    2,546
    Likes Received:
    2,027
    Trophy Points:
    173
    Location:
    Hinckley/Burbage
    Model of Z:
    Z3 3.0i Auto
    Apologies Brian but I never intended to cause you expense but I am sure you will see a return on your investment. The additional benefit is that you won't be idle over the weekend.
     
    • Like Like x 1
  10. Brian H

    Brian H Zorg Guru (V)
    British Zeds Scottish Zeds

    Joined:
    Dec 5, 2011
    Messages:
    3,505
    Likes Received:
    2,551
    Trophy Points:
    195
    Location:
    Killin
    Model of Z:
    E36/7 3.0i - E85 Z4///M
    No worries Brian, I have been thinking about changing my ARB links for a while, you just helped me get on with it. :)