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.

BMW Z4 Removing leather panels from door cards

Discussion in 'Z4 Roadster & Coupé' started by GazHyde, Jun 20, 2017.

  1. GazHyde

    GazHyde The Gaz Monkey
    Staff Member Administrator Global Moderator British Zeds

    Joined:
    Dec 2, 2011
    Messages:
    15,458
    Likes Received:
    9,814
    Trophy Points:
    226
    Location:
    Newbury, Berkshire
    Model of Z:
    BMW Z4 3.0Si Sport
    Having bought the new interior for my Z4, I was left with the challenge of switching the leather inserts from one set to the other. My cards were extended leather, and the supplied ones were the basic style and also slightly damaged.

    Very little information I could find on how to do it, so was left to my own devices with a diverse collection of tools. I've stripped down a Z3 interior, which is kids play compared to this.

    Below is a pic of the existing extended leather cards, and below that the donor cards. The aim is to replace the red leather panels with the yellow ones.
    upload_2017-6-20_20-3-39.png

    upload_2017-6-20_20-5-11.png

    There is an almost continuous seam of plastic weld around the area of the leather insert which needs to be broken. Next off is a picture of the door panel with the leather removed. This show well attached they are, and how much plastic weld needs to be broken to get them apart. The white line shown is the adhesive I used to fix the panels back on, it exactly follows the seams that were broken so you can see how much effort is involved.

    upload_2017-6-20_20-10-0.png

    So, is there a technique to splitting them? Not really, but the plastic panels are incredibly strong and the plastic seams are a weak point. A combination of Dremel cutting disc, broad flat blade screw driver and brute force seemed to work best. Using the Dremel cut a slot in the weld enough to get the screw driver head in, then twist it and the next inch or so would break open. Rinse and repeat, with varying levels of effort involved at different points. The speaker section (round area to the right) was tricky as the plastic would move around as you tried to twist the screw driver. The rectangular section was bonded more securely as it's where the air bag pops out of the panel.

    This is a close up of the plastic "seam" where the two meet.
    upload_2017-6-20_20-15-23.png

    This pic gives a reasonable close up of the technique I used. You can see the molten plastic from where the Dremel disc went in first, followed by the screwdriver.
    upload_2017-6-20_20-14-10.png

    The first panel took me an hour, but the fourth about 20 minutes once I'd perfected the process as best I could. The plastic on both the panel and the door card is really strong so could get a bit more physical than I was expecting.

    The reverse of a leather insert, again showing the seam.
    upload_2017-6-20_20-28-34.png

    Two sets of leather panels after much effort.
    upload_2017-6-20_20-26-11.png

    I spent 20 minutes in B&Q looking at options for glue and settled on Evo-Stik Seriously Strong Stuff Ultimate Adhesive. Various reasons, it worked with plastic, is high bond and had 10 minutes of adjustment before it started to go off. Then it had a 24 hour curing period which was fine as I had plenty of time.
    upload_2017-6-20_20-23-42.png

    Once the glue was applied, I created a basic jig to hold everything in place (assembled out of what was to hand in the patio)
    upload_2017-6-20_20-25-11.png

    Worked like a dream. As I say a real pain in the backside, but totally worth it. Would I want to do it again... Hell No!!
    IMG_2826.JPG

    ...and finally in situ..
    upload_2017-6-20_20-30-17.png
     
    • Like Like x 5
    • Thank You! Thank You! x 1
  2. Mint

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

    Joined:
    Sep 23, 2012
    Messages:
    10,744
    Likes Received:
    7,159
    Trophy Points:
    222
    Location:
    Staffordshire, UK
    Model of Z:
    1st Z3 | 2.2 | Sport | Individual 2nd - Z3 | 3.0 | Sport
    Great write up Gaz and well worth all the effort. Looks great:thumbsup:
     
  3. t-tony

    t-tony Zorg Expert (II)
    Supporter British Zeds #ZedShed

    Joined:
    Dec 31, 2013
    Messages:
    36,644
    Likes Received:
    16,894
    Trophy Points:
    226
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    The finished article says to me well worth the effort Gaz. Nice to know how it can be done, if I do that in the future. Thanks.

    Tony.
     
    • Agree Agree x 1
  4. Antm72

    Antm72 Zorg Expert (II)
    Supporter British Zeds

    Joined:
    May 4, 2015
    Messages:
    6,783
    Likes Received:
    4,449
    Trophy Points:
    240
    Location:
    South Yorkshire
    Model of Z:
    2.8
    Nice work the new interior is very nice the colour combo is great suits the new body colour perfectly :thumbsup:
     
  5. andyglym

    andyglym Shiny Dust Caps Make Your Zed Go Faster.
    Supporter British Zeds

    Joined:
    Feb 20, 2015
    Messages:
    18,008
    Likes Received:
    9,858
    Trophy Points:
    225
    Location:
    Moresby, West Cumbria, England
    Model of Z:
    2.8 Roadster
    Looks great and well worth the effort :thumbsup:
     
  6. Mac Romans

    Mac Romans Zorg Guru (III)
    Supporter British Zeds

    Joined:
    May 13, 2015
    Messages:
    1,253
    Likes Received:
    1,583
    Trophy Points:
    141
    Location:
    Ilkeston, Derbyshire
    Model of Z:
    My s***'s custom!
    I'm looking forward to seeing this on Sunday.
     
  7. Keith Pollard

    Keith Pollard Newbie

    Joined:
    Jan 12, 2019
    Messages:
    3
    Likes Received:
    10
    Trophy Points:
    3
    Great post, do you still have the red leather.
     
  8. spurs fan in a coupe

    spurs fan in a coupe Zorg Guru (IV)
    3rd Party Trader

    Joined:
    Dec 5, 2011
    Messages:
    2,891
    Likes Received:
    2,105
    Trophy Points:
    165
    • Like Like x 1
  9. philiper

    philiper Zorg Addict
    British Zeds

    Joined:
    Feb 24, 2018
    Messages:
    304
    Likes Received:
    89
    Trophy Points:
    45
    Location:
    East Anglia
    Model of Z:
    E86 Montego Blue Auto
    Extended leather :scorecard: