Nissan 370Z Forum - Cabin noise

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- - Cabin noise (http://www.the370z.com/nissan-370z-general-discussions/26760-cabin-noise.html)

Quote:

Originally Posted by hfriedberg (Post 1055844)

Addendum: my wife tells me it's an extra-thick yoga mat.

The ones I see for sale are presented as 1/4" thick. Have you found thicker? I assume the thicker, the better insulating.
I already have the hatch accessory hatch blanket or whatever it's called in there. This mat material would go under the non-accessory hatch carpet and even if it's not perfectly cut, it might improve the situation. Every little bit helps, I would think.

Yes. I used a Stott 1/4" mat. It's the thickest and the softest my wife has seen, so presumably it blocks the most noise. Gaiam (available on line) makes a denser mat, but my guess is that it is no better at absorbing noise. Ideally I should have made a pattern of the hatch itself rather than the thin blanket to get a tighter fit. But the noise reduction is impressive using the blanket, and the yoga mat doesn't show.

Has anyone done any sound deadening in the cabin area in the footwells and under the seats? What did you use and did it make a difference?

What's under the cockpit carpets anyway? Is it mostly bare sheet metal like the hatch area or has the factory put in any sound deadening?

I'm very interested to hear from the members on this issue.

I never hear any cabin noise. I drive with my windows open at WOT. Lol:driving:

Quote:

Originally Posted by UNKNOWN_370 (Post 1091156)

I never hear any cabin noise. I drive with my windows open at WOT. Lol:driving:

:tup::driving:

Calm down children, let's play nice. Behave and don't be the person at the back of the class that spoils it for the rest of us.

GuardDad- if you haven't already, check with 90ST. he's done a full dynamat on the car including floor board. :)

I've already PM'd him twice and got no response, that's why I posted.

hummm... ask him over in the audio section then?

I'll give him another shout, maybe I screwed up, thanks

Quote:

Originally Posted by ltp (Post 928735)

Half the noise due to the noisy stock tires. I just changed out the worn out stock tires with the Continental ExtremeContact DWS. The DWS tires are cheaper, much smoother & quieter than the stock tires. Now I enjoy my Z much more.

Thats what I plan to do. Conti DWS- Im hoping they are quieter then the Bridgestones

Quote:

Originally Posted by Guard Dad (Post 1090890)

I pulled up the factory carpeting on the driver's side to install some wiring, and as I recall, there is some kind of padding under the carpet. It's not glued to the sheet metal, and can be pulled up as well. Sorta like the padding under a regular carpet in your house? Probably provides some sound insulation too. Of course, this was a while ago that I did this so I might be totally wrong.

Hi everyone. Some months ago I mentioned that as part of of an audio upgrade I was going to add more sound deadener in the cockpit area, well I'm back to report the results.

As some of you know I've been aggressive in reducing the road noise in the Z. In the hatch I've applied generous amounts of Dynamat Extreme and covered most of it with Luxury Liner Pro. I've also applied Dynamat Extreme to the doors.

My most recent addition was to apply Rammat (essentially Dynamat Exterme from another supplier) on the bare metal of the cockpit floor. To do this I removed the seats and pulled the carpet back as far as possible. I was not able to apply Rammat to the top of the console and more than about 6-8" above the floor in the foot wells.

My observations are as follows:

Dynamat Exterme in the hatch and doors, approximately 38 square feet total: Huge improvement, modest cost, modest additional weight, modest degree of difficulty. Well worth the trouble.

Luxury Liner Pro in the hatch, approximately 20 square feet: Limited additional improvement over the Dynamat Extreme alone, this stuff is heavy. Probably not worth it unless the noise is a real issue for you.

Rammat on the cockpit floor, this requires removal of the seats, approximately 20 square feet: Rammat seems like a quality product but the improvement is this case was barely noticeable (the factory has already installed significant sound deadener on the cockpit floor) and is limited to a slight reduction of an annoying resonance from the foot wells that really wasn't noticeable until the application of the Dynamat Exterme and Luxury Liner Pro in the hatch. Probably not worth the trouble unless you are gutting the interior for some other reason.

The take away: Apply Dynamat Exterme or Rammat to the doors and hatch for a big noise reduction and only do more if you really feel the need.

Quote:

Originally Posted by Guard Dad (Post 1330918)

Hi everyone. Some months ago I mentioned that as part of of an audio upgrade I was going to add more sounding deadener in the cockpit area, well I'm back to report the results.

As some of you know I've been aggressive in reducing the road noise in the Z. In the hatch I've applied generous amounts of Dynamat Extreme and covered most of it with Luxury Liner Pro. I've also applied Dynamat Extreme to the doors.

My most recent addition was to apply Rammat (essentially Dynamat Exterme from another supplier) on the bare metal of the cockpit floor. To do this I removed the seats and pulled the carpet back as far as possible. I was not able to apply Rammat to the top of the console and more than about 6-8" above the floor in the foot wells.

My observations are as follows:

Dynamat Exterme in the hatch and doors, approximately 38 square feet total: Huge improvement, modest cost, modest additional weight, modest degree of difficulty. Well worth the trouble.

Luxury Liner Pro in the hatch, approximately 20 square feet: Limited additional improvement over the Dynamat Extreme alone, this stuff is heavy. Probably not worth it unless the noise is a real issue for you.

Rammat on the cockpit floor, this requires removal of the seats, approximately 20 square feet: Rammat seems like a quality product but the improvement is this case was barely noticeable (the factory has already installed significant sound deadener on the cockpit floor) and is limited to a slight reduction of an annoying resonance from the foot wells that really wasn't noticeable until the application of the Dynamat Exterme and Luxury Liner Pro in the hatch. Probably not worth the trouble unless you are gutting the interior for some other reason.

The take away: Apply Dynamat Exterme or Rammat to the doors and hatch for a big noise reduction and only do more if you really feel the need.

Wow... so how much weight gain are we talking about???

Dynamat Extreme/Rammat runs about 1/2 pound per square foot and Luxury Liner Pro is closer to 1 pound per square foot.