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Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

ABS Upgrade, Door Window Refresh, etc 12

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Kaz-kzukNA1
, 19-06-2015 at 01:31 PM (2860 Views)







Have been tackling the door window alignment for many days recently with one nearly dead finger as a result.






It looks like someone already mistreated some of the parts that I planned reusing and at the end, I had to make custom adjustments that were not on the workshop manual.
As in my previous blog, I should have replaced all four front/rear sashes and not just one of them.






Some of them were internally damaged but couldn’t be seen from outside and looked like excessive force was applied and changed their original shape.
This was the reason why I had to use the custom method for aligning the window because all of the adjusters were maxed out at the right side window.










For any door window refresh, these are the minimum parts to be replaced plus the rear sash and these are just for one side (L side window for the above photo).
Addition to these, there are several parts and spacers to be prepared as you will need to decide where and how many to apply these depending on each NSX.
Again, I have full respect to the Honda people who assembled and adjusted these window glass at the factory because each car has different alignment.
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Body

Comments

  1. greenberet's Avatar
    Dear Kaz,

    Do you recommend replacing the front sash and upper weatherstrip whenever a window refresh is carried out even if the front sash is already the later-spec design?

    Do you know whether the design of the rear sash also changed at some point so that the later spec is required in order to seal properly against a new upper weatherstrip? I have a tiny bit of wind noise at both of my rear sashes that I thought was just normal but maybe it's due to my installing new upper weatherstrips and front sashes but not new rear sashes.

    Adding up the prices of one regulator, two rails, four sliders, the front and rear sashes, and an upper weatherstrip, I come to a bit over USD 2000 for parts (from a US dealer) per door. The cure for slow windows is not cheap!
  2. Kaz-kzukNA1's Avatar
    It has changed but I think it was more to do with the rubber material and the opening lever mechanism.
    The rear sash design where it meets the ‘saddle’ of the latest design upper weatherstrip at the door opening may have changed slightly but not much, unlike the dramatic change at the front sash.

    If you know the full history of your NSX, then you may be able to get away without replacing the rear sash.
    However, if you don’t know the full history or if it’s really old or even showing the sign of fatigue, best to replace it.
    Good example is the final two blogs (Final Touch 01 and Final Touch 02) posted several days later from this post. Had to spend ages for the alignment due to the re-use of old/tired/damaged parts......


    Everytime when you replace the front or rear sash, you will be forced to make small adjustment of the glass alignment even if you have marked the original position and counted the number of turns at the adjuster bolt.

    You should not get any wind noise if the glass alignment adjusted properly.

    Also, most of the time, it’s the upper weatherstrip that is not installed properly and causing the wind noise.
    If it left too long in the wrong position, the weatherstrip will take set and thus, when installed properly later, it’s too late and will make the issue even worse.

    On many occasions, I had to re-install the weatherstrip in the wrong way after showing the proper way to the owner simply because the wind noise got much louder if installed in the correct way and thus, had to go back to the original wrong state.

    Kaz
  3. greenberet's Avatar
    Dear Kaz,

    Thank you for the insight. When I had new upper weatherstrips installed, the dealership didn't do it right so I reinstalled them myself the same evening and made sure they were seated properly. I don't get a wind noise above a certain speed at the rear sashes, a tiny bit is always there. It's as if there were a pinhole on both sides somewhere around the rear sashes or as if the upper weatherstrip couldn't completely seal against the step between the rear sash and the glass. If there shouldn't be any wind noise there, I'll have to look into it. My daily driver has double paned windows so maybe I'm just overly sensitive.

    In any case, thank you again and I hope your finger(s?) recover soon from the window alignment marathon!