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I replaced my rear window :arghh:

Discussion in 'Z3 Roadster & Coupé' started by Dobiwallah, Dec 11, 2014.

  1. Dobiwallah

    Dobiwallah Zorg Legend
    New Zealand Zeds

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    Yesterday I replaced the rear window of the Zed (or Zee) The new window was a present from Sinterklaas http://en.wikipedia.org/wiki/Sinterklaas As all the howto's talk about building the window in within 1 to 1.5 hour, not mine. I can tell you, that job is not for the faint-hearted. On the end, I had zipped and unzipped the window about 6 or 7 times. I'm a specialist on zipping in Zed rear windwos now.

    The first time I zipped it, the zip didn't go beyond the left bottom corner. Dobiwallah junior was helping me, and he noticed that the corner stitching had let go. So I had to sew that back (I am a electrician, not a tailor as the doctor would have said...) The second time the zip let go in the corner, it opened right after the zip fastener. I took the window out again, and placed it on top of the old window. The new window was 8 to 10mm smaller in the left bottom corner. So, or the old window had stretched out, or the new window was to small, I could not tell, as it was not an original, but a window from ebay http://goo.gl/lFMLdx (Thats what Sinterklaas told us ofcourse). But logic would say, if the old window had streched, the zip would have deformed, and the zip spiral would have been wider as well.

    So anyway, after 5 or 6 times I was finally able to close the zip in that corner. Placed the double sided tape. Pressed the tape to the profile piping, and the top zip popped out (that was a big $%$%# word) But, 2 more times, and the window was zipped again. Carefully I inserted the fabric into the profile piping and pressed the fabric with one hand on the other side this time against the double sided tape.

    Now I found out that the left top corner is not exactly fitting. You can still see an edge of the fabric. I don't know yet what to do, I hate to use silicon, that looks so wrong...

    I hoop the window will stay put if I drive with the top down :(. It is not a plug and play job..

    The old window profile piping was detoriating. The old window had a metal rod in the top. The new window does not have that.
    [​IMG]

    Point of no return:
    [​IMG]

    The corner had to be stitched after the first trial
    [​IMG]

    The size of the new window is different:
    [​IMG]

    The window is placed, only the fabric has to be inserted:
    [​IMG]

    Mask taped for possible scratches:
    [​IMG]

    The left top corner does not fit:
    [​IMG]

    This is the damage you get if the window blanket is to small:
    [​IMG]

    The dog has to find a new blanket now:
    [​IMG]

    End result looks nice:
    [​IMG]

    XLarge photo of the window:
    [​IMG]
     
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  2. Cooper

    Cooper Zorg Guru (IV)
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    That is a great write up and quite funny as well - poor dog!

    The end result is great, well done!
     
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  3. vintage42

    vintage42 Dedicated Member
    American Zeds

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    I am surprised the zipper tabs on the window and top survived so many starts. After a few tries, the blue fabric tab on a new BMW window became so frayed and fuzzed up that I could not get it started, so returned the window to the vendor for partial refund. The same thing happen to the second window I bought, also returned for refund after a shop tried once and didn't want to try further. I had to get a new top with sewn-in window.
     
  4. miller1098

    miller1098 Zorg Guru (V)
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    After reading this I have reached this conclusion for me....new window= new roof
     
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  5. oldcarman

    oldcarman Zorg Guru (V)
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    It's difficult to see as I only have an iPhone but was the top fully closed as you performed the surgery doctor? The instructions I've read are to always partially open the top before trying to zip in the new window and to be sure to count the number of teeth to the centre of the old window to insure you hit the curves at the correct place. I suspect that with the problems you have with two diagonal corners that somewhere your frame is a bit out of line extending the distance across the window. As such your new window is an oval whereas your old window has adjusted to the new odd shape as verified by the pulling out of your threading in the corner.
    All things considered you've done a great job, congrats!! JIM
     
  6. Dobiwallah

    Dobiwallah Zorg Legend
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    Yeah nah, I had a rolled towel between the window and the roof to create the distance. You are probably right about the frame out of line. I just sort of measured up the window, and it looks like the distance top/bottom is equally left and right.

    This afternoon I went to the VET and bought a syringe with a large needle and filled up the space inside the profile lining in the left top corner with silicone. It is almost invisible to see, but at least I can't get water via the profile lining space into the cabine. I hope this window will last 14 years as well. We have the highest UV radiation of the world I believe.
     
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  7. oldcarman

    oldcarman Zorg Guru (V)
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    The thing is too that when they do the install at the factory the window is already inserted and sewn in so if the top frame was knocked around a bit during install it could have been like that from day one. I think this problem is the reason only BMW and not any aftermarket vendors sell zip in windows.
    Good on you for sticking to it and making it work. JIM
     
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  8. zedonist

    zedonist Guest

    I would recommend a new roof as the only way to go, or make sure it is as hot as hell to ensure the window can stretch a little, the other issue is that the fabric actually shrinks, so you need to put a bead of silicone under the hem and then slide the fabric into the piping with a credit card and leave to dry with the roof half open to relieve the pressure.
     
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  9. Dobiwallah

    Dobiwallah Zorg Legend
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    The roof was way to good to replace. The zed has and is always parked inside. It is a bit cloudy the latest 3 days, but I will place the zed in the hot sun for a day to let the window stretch, before I put the roof down.
     
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  10. FRANKIE

    FRANKIE Zorg Guru (V)
    American Zeds The M44 Massive

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    When I went to replace my window, I noticed the poor condition of the stitching and after some of it gave way, decided to replace the entire top. I should sell the new replacement window I still have as I never used it or tried to put it in the top. Frankie
     
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  11. Dobiwallah

    Dobiwallah Zorg Legend
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    Yes i have seen your video. That top looked very poor. How did the install of the new top go? How is the quality of the ebay top? It is always a gamble with what you get from ebay. I think my top will do another 5 or 6 years. If it goes it is because of the high UV radiation in New Zealand, not of the moisture
     
  12. vintage42

    vintage42 Dedicated Member
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  13. FRANKIE

    FRANKIE Zorg Guru (V)
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    I was disappointed with the top when I got it. I didn't open it right away. Be the time I opened it, it was too late to return. It didn't have the sewn-in pieces on the sides that the original one has. I'll have to live with it. These pieces attach to the metal frame on the sides and help protect against wind and rain. A NOTE TO ALL: MAKE SURE THESE PLASTIC PIECES ARE INCLUDED IN YOUR NEW TOP REGARDLESS OF WHETHER YOU INSTALL IT YOURSELF OR HAVE IT DONE. INSPECT IT FIRST BEFORE IT IS INSTALLED ON YOUR CAR!!!!! FRANKIE
     
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  14. FRANKIE

    FRANKIE Zorg Guru (V)
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    Just goes to show you what a good job you did. Happy to hear it. Frankie
     
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  15. oldcarman

    oldcarman Zorg Guru (V)
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    The fact that you thought it through and succeeded says a lot about you personally, congrats again on not throwing your hands in the air and paying someone to put a new top on. JIM
     
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  16. Dobiwallah

    Dobiwallah Zorg Legend
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    Uhh, yeah I don't give up so easely..

    I hope the inflatable toy boot smell will go away soon:depressed: Btw, this is my first car that I thought, I want to keep this a very long time. If I keep it 20 years, I will be almost 70 year old. I will be one of the clichés, bald grey guy in a sports car :pompus: Hm, I think I can handle that.
     
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