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Today at Atelier Kaz - Private NSX Enthusiast, ex-Honda R&D engineer with F1, Indy/CART background

Final Touch

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Replacing the right door upper weatherstrip.

If you can close your door with ease,
your weatherstrip is already tired and is no longer pluffy.

When the NSX is new, you must keep applying force on the
door lever area until the door is fully closed otherwise,
it won’t shut properly.















If you own an early model NSX,
you must first check the type of front triangle sash before
replacing this weatherstrip.

Regardless of the year model,
you will receive the later design weatherstrip that is only
compatible with the later spec front triangle sash.

Unfortunately, the parts manufacture changed the sash design
without telling Honda so on the parts system,
there is only one parts no. for each side on all 91 -05 NSX
but actually,
there are two different types exist.

[Edit: The original design on the blue NSX and
the later spec one on my red NSX.]

Therefore, if you just replace the weatherstrip on the
early model NSX, water and air will leak into the cabin.









On almost all of the NSX that I carried out the Health Check,
the weatherstrip was not installed properly
if it was removed in the past.

You must push the ‘rib’ of the weatherstrip behind the
‘lip’ of the pillar retainer.

Most of the time,
the rib was just sitting on top of the lip and
if not addressed early enough,
the weatherstrip will take set and if you try to
re-install it properly later,
it will cause wind noise as it was already deformed to
the wrong shape.

You need to be very careful not to damage the
new weatherstrip during the installation.













Weatherstrip properly intalled.

If yours doesn’t line up against the panel like this,
it’s not installed properly.

Now it requires extra force to close the door properly
but on this NSX, the door glass alignment is slightly off
so not too bad.

There is no point in adjusting the glass alignment
at this stage because the power window speed itself
is still very fast.



Quick test driving session to check the
wind and any rattling noise.

Happy with the result so applied extra water around the
right side door for leak check while washing the car.

No issues so just quickly blow dry the paint work.
Thank you to my garden blower especially in the cold winter.

I’m glad I didn’t have to wash the car in the rain.
Good sign for 2013.








JDM spec TB kit contains two stickers inside the package.

As seen before, attached it to the door opening.



Due to holiday season and other commitment,
it tool extra time for the service but finally
the NSX is ready to be returned to the owner.



As mentioned in the past,
you only need my Engine Refresh every 10 years.



Thank you for using my service and
hope you will enjoy your NSX for many years.

Regards,
Kaz

Updated 14-01-2013 at 01:01 PM by Kaz-kzukNA1 (Added extra photo for original/updated front sash.)

Categories
Body , Engine Refresh Stage 2

Comments

  1. greenberet's Avatar
    Dear Kaz,

    Your point about the front sash explains a lot. Years ago, I replaced my driver's side front sash holder assembly because it had developed a tear and I replaced all the weatherstrips around both doors. I installed and adjusted everything very carefully but since then, a few drops of water leak into the interior around the front sash on the passenger's side whenever I wash the car. Now I know why! I guess it's time for a new front sash holder assembly for the passenger's door as well. Thanks for the information.
  2. britlude's Avatar
    "Therefore, if you just replace the weatherstrip on the
    early model NSX, water and air will leak into the cabin"....

    funny you should mention that, as mine has had the occasional wind noise from the sash triangle since it had new door seals.... so do i have to specify a later style sash for the replacement, or is the later version now the default one?
  3. Kaz-kzukNA1's Avatar
    Hi, britlude.
    I have added extra photos in the above post so please refer to them when reading the followings.

    The difference between the original and later spec front triangle sash is quite significant.

    The original design is very thick and stiff.
    It requires the original design weatherstrip as a set but no longer available.
    With this combination, the glass and sash will be pushed strongly against the weatherstrip in order to prevent the air and water from getting inside the cabin.
    However, once the weatherstrip gets tired or if the glass alignment is off even slightly, it will cause problem.


    On the other hand, the later design sash is thin and flexible.
    The weatherstrip design was also upgraded and when the door is closed, the edge of the glass and the sash will be wrapped around by the weatherstrip preventing the air and water leakage.

    It’s been a while since last time I ordered the front triangle sash but when I ordered it from Japan, it was already the latest design one.
    Having said this, I'm not sure about the old stock in UK or US.

    You may want to show the above photo and specifically ask for the later spec one when ordering the parts.

    Kaz

  4. Dutchie's Avatar
    Hi Kaz, even a few later - still very valuable info!
    Do you know the part number for the front triangle sash's? Can't figure it out. My 92 NSX clearly has the old version.

  5. Kaz-kzukNA1's Avatar
    There is only one parts # each for the front sashes at R & L doors yet there are two different spec, the original and the later one.
    Regardless of the country spec, RHD, LHD or the year models, this is the same.

    Not sure which side of the door you are referring to, where you are based or the spec of your NSX but your userID may suggest something.

    For European models, please visit lingshonda website and select the parts diagram that you are looking for.
    Delete the [ _pfk ] section from the address bar so that it will show the proper Honda parts #.
    Without this, you will get parts # in a format such as ‘PFK*****’ that is Lings specific # and not the Honda one.

    Lings site may not display properly using the Firefox with certain add-ons so you may need using different browser such as chrome, edge, IE, etc.

    For US Acura, there are plenty of parts info through oemacuraparts, acurapartswarehouse, etc.


    Kaz

  6. Dutchie's Avatar

    Hi Kaz, thanks for the detailed steps. Yes I am from the Netherlands - I am replacing borth sides to reduce the windnoise (and so I can enjoy the engine noise even more!).
    I found partnumers 72241-SL0-003ZA and 72281-SL0-003ZA - those are the plasic sides of the sash at the inside of te door!

    Thx!
  7. Kaz-kzukNA1's Avatar





    Not sure whether we are talking about the same parts or not but if you are after the triangle front sash like in the photo, then it's
    R-side: 72240-SL0-003
    L-side: 72280-SL0-003

    Although there are 2 different spec for the single parts no., if you order it now, you will receive the later spec.

    If replacing, you must replace the upper weatherstrip at the same time.
    NSX-T was introduced in 95 so already came with the later spec front sash and you really don't want replacing these weatherstrip. Super expensive.
    You mentioned that your NSX is 92 so only Coupe model.

    For Coupe models,
    R-side door upper weatherstrip: 72381-SL0-013
    L-side door upper weatherstrip: 72391-SL0-013

    Just to remind you, if you are going to replace the front sash, be prepared spending all day just for adjusting the window alignment.
    Your guide rails are already worn and warped so setting the adjusters to the same position as the old front sash won't work.

    Good luck.


    Kaz