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Old 11-20-2019, 10:53 PM   #41
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Default Re: How to make van quieter from road noise

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Originally Posted by fisjon View Post
I have noticed that there is a little more engine noise in the cab when I open the air intake in the centre of the dash. No ac or clever stuff in my van, 1999 model.
Check your cover for the cabin air filter is seated properly. I insulated that whole HVAC system under the "hood" on mine with foil backed closed cell foam sheet. I also put some heavy butyl rubber on the inside of that cover because it is right above the engine.

Here is an example of one that isn't seated properly:
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Old 11-21-2019, 08:09 PM   #42
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Default Re: How to make van quieter from road noise

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Originally Posted by Robert Foster View Post
Adding a second bulb type weather stripping, in addition to the OEM door seals, to the two cabin door frames has significantly cut the cabin noise on both of the Sprinters that I've owned.
can you explain what you mean by a second bulb type weather strip Please?
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Old 11-21-2019, 08:41 PM   #43
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Default Re: How to make van quieter from road noise

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can you explain what you mean by a second bulb type weather strip Please?
he posted pictures/links on page 4 :)
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Old 11-22-2019, 01:51 PM   #44
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Default Re: How to make van quieter from road noise

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Originally Posted by owner View Post
Check your cover for the cabin air filter is seated properly. I insulated that whole HVAC system under the "hood" on mine with foil backed closed cell foam sheet. I also put some heavy butyl rubber on the inside of that cover because it is right above the engine.

Here is an example of one that isn't seated properly:
Thanks for the pic. I have done much the same with my van, I will double check that it is seated properly.
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Old 11-27-2019, 02:04 PM   #45
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Default Re: How to make van quieter from road noise

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Originally Posted by Nautamaran View Post
I did the same as Robert, using this stripping around my doors with the shorter leg up/forward.
The wind noise has dropped drastically (esp. at top of the A-pillar), and powdered snow no longer collects above the window frame over night, waiting to drop onto the driver’s seat when the door is opened.

https://www.napacanada.com/en/p/BKB7701617

-dave
Dave, curious why you used the short/long leg profile instead of the other suggested D bulb profile. Have you had prior experience with this shape and found it to be more effective?

Brian
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Old 11-27-2019, 11:57 PM   #46
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Default Re: How to make van quieter from road noise

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Originally Posted by Robert Foster View Post
Here's the product that I used and below is a picture of it on my previous Sprinter ... it's the black bulb weather stripping adhered to the van, not to the door. Properly positioned, when you close the door it perfectly seals the forward edge of the door, which absent this additional bulb catches the wind. I will try to take and post some pictures of it later today on my current Sprinter that better show the installation. ]
Been using the Noise app on my Apple Watch, which people say is pretty accurate.

Applied that gasket yesterday and measured a 1dB drop in noise. Not a huge difference, but cheap and easy.
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Old 11-28-2019, 12:29 AM   #47
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Default Re: How to make van quieter from road noise

Attempting to reduce wind noise, I gaffer taped the outside all the driver's side door joints so they were flush and smooth. I had to get in and out via the passenger door.

I noticed no significant noise reduction. So, Garandman's observations map perfectly with mine.

I don't have the horrid snow issues that Nautamaran experiences because

1) It never snows in British Columbia and

2) Frito lives in a garage all winter.

Besides the engine noise and the B-pillars (which are closest to my ears), the wind noise that results from those big-ass mirrors is the loudest thing I hear now. Bring on the rear view video cameras!
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Old 11-28-2019, 02:27 AM   #48
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Default Re: How to make van quieter from road noise

The Cabin Air Filter is NLA. I took off the old one and used it as a pattern for Thinsulate. It was advised to waterproof the scrim. We’ve not done so and it seems to be holding up fine.
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Old 11-28-2019, 02:53 AM   #49
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Default Re: How to make van quieter from road noise

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The Cabin Air Filter is NLA. I took off the old one and used it as a pattern for Thinsulate. It was advised to waterproof the scrim. We’ve not done so and it seems to be holding up fine.
what is a scrim,....and what does this mean??
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Old 11-28-2019, 05:33 AM   #50
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Default Re: How to make van quieter from road noise

The Thinsulate most of us use for sound and thermal insulation has a thin fabric coating on one or both sides. This thin fabric is called scrim. This helps contain and shape the insulation.
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