Nissan 370Z Forum

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

brucelidat 05-19-2012 05:58 PM

Plan to go back for brake lines/fluid drain.

MacLean 05-20-2012 12:26 PM

Quote:

Originally Posted by brucelidat (Post 1727183)
He actually undercharged me by a bit. I picked up some post MAFs that I brought along to install as well since I was having all that other stuff done. He was going to charge me $20 for that, but forgot it at the end. So the final tally

Swift springs - $290
spring install - $130
Dynamat install - $140
post MAF install - $0
total - $560

I think it was a pretty good deal overall.

That is a hell of an effen deal.

RiCharlie 05-20-2012 09:43 PM

Quote:

Originally Posted by brucelidat (Post 1727183)
He actually undercharged me by a bit. I picked up some post MAFs that I brought along to install as well since I was having all that other stuff done. He was going to charge me $20 for that, but forgot it at the end. So the final tally

Swift springs - $290
spring install - $130
Dynamat install - $140
post MAF install - $0
total - $560

I think it was a pretty good deal overall.

Well as I said before, for this price I could have driven to California, had a vacation and returned for less than what I paid. It cost me $1200 including materials... This is just so far out of line with what I paid, its incredible! Good for you!

Bonzo 05-21-2012 08:46 AM

Quote:

Originally Posted by RiCharlie (Post 1727173)
Bonzo was right!

WOW!!!!!!! :eek:

Even us morons get lucky every once in a while. :happydance:

brucelidat 05-21-2012 11:47 AM

Here are some pics I took during the install.

[IMG]http://www.the370z.com/members/bruce...5-img-6338.jpg[/IMG]

http://www.the370z.com/members/bruce...4-img-6335.jpg

Tribalpinoy91 05-22-2012 07:17 PM

Do the two big plastic triangular pieces in the trunk just pop off I'am assuming? Then the carpet just pulls off?

P.S. My Z hasn't arrived yet..

brucelidat 05-22-2012 07:18 PM

I don't know. I wasn't watching the entire time. I just stepped in to take some progress shots to post here.

scottIN 05-22-2012 07:32 PM

Carpet first, then interior pieces, then foam, then spare.

vermithrax 05-23-2012 11:40 AM

Was wondering if mounting a product like Dynamat or Luxury liner pro to the top or underside of the plastic corrugated cover in the hatch would help? Sort of sandwich it between the carpet and the plastic cover maybe?

You would think that that would pretty much seal off the noise coming from below. Has anyone done this? iF so, what were your results and how much did you need?

scottIN 05-23-2012 12:07 PM

Quote:

Originally Posted by vermithrax (Post 1732802)
Was wondering if mounting a product like Dynamat or Luxury liner pro to the top or underside of the plastic corrugated cover in the hatch would help? Sort of sandwich it between the carpet and the plastic cover maybe?

You would think that that would pretty much seal off the noise coming from below. Has anyone done this? iF so, what were your results and how much did you need?

It's somewhere in this thread about doing that.
I've got the plastic, base carpet and then the truck carpet so I don't know how much more I could pack in there.

RiCharlie 05-23-2012 02:37 PM

:roflpuke2::stirthepot:
Quote:

Originally Posted by Bonzo (Post 1728889)
WOW!!!!!!! :eek:

Even us morons get lucky every once in a while. :happydance:

I was referring to a different Bonzo...:):stirthepot::tup:

Bonzo 05-23-2012 03:59 PM

Quote:

Originally Posted by RiCharlie (Post 1733324)
:roflpuke2::stirthepot:

I was referring to a different Bonzo...:):stirthepot::tup:

:rofl2:

:owned:

Mwagner07 05-29-2012 06:33 PM

Cabin Noise - Now Reduced
 
Hello all. Just finished some 12 hours worth of sound damping (the whole rear hatch)
Purchased product from Canada (B-Quite Ultimate). I did a lot of research and this product comes so close to dynamite I had to try it. I used 43 Yards for the whole trunk so purchase the 50 Yard roll. This product is a butyl base and smelled slightly like a new tire. I have had loads of hot days and have not yet once notice any odor from the product. I did notice great noise reduction but read on. I also used the V-comp matting (2 Sheets) placed it on the entire lower back area under the spare tire, but not after the bracing and also cut a duplicate layer that covers the WHOLE rear truck (size of the rear factory trunk mat).
Also I added some B-Quite to the inner left tire wheel well . Started from the lower front of the well to 12 o’clock top. Then I covered that with Duplicolor professional under coating / sound deadener (from Advanced Auto Parts $7.49 can) used 2 1/2 cans.
Interior Sound from the Bose is simply amazing now. The bass hits clean and tight - I LOVE IT!!!
At around 35MPH to 60MPH I notice the rear tire noise still comes through but much less.
Now at 60-65MPH it is virtually gone. and I mean gone. My guess is due to the factory set camber.
Once you hit the 60mph mark the tire camber becomes more neutral and thus the noise is gone..
Any thoughts on that ???

I will have the camber brought to neutral just to test this theory.
(may require some adjustable aftermarket parts)
I understand that the Z is a sports car and will have less refined cabin sound. The point isn’t for people who enjoy that but to help those who are daily drivers and would like a quieter cabin..
I only have a 10 min ride to work, but during lunch many a times just go out and hit the bends and it is much more enjoyable now.
Thanks to all whom keep info flowing into the Z community….

Mwagner07 05-29-2012 08:40 PM

Tire Pressure and Sound
 
Just wanted to do a quick update.
Cold Tire pressure was sent to 41psi rear 40 psi front. at 90 degree outdoor temp today.

I couldn't figure out why after doing all my mods was the inside cabin gaining noise.. Well it was because when it was 70 out when I did the install everything sounded great.. So I checked pressure at the local gas station (FORGOT MY GAUGE) and added some air. Well then the heat came on this week and the noise went up. Then it occurred to me my tire pressures.

Any how I took my digital tire gauge (accurate to 2 psi) and when out to check my tires.. at 65 degrees outside temp (cold tire) and the rears where 38PSI along with the fronts. I brought them back to 35 Psi cold and the cabin noise from the rear went down even more after a test ride. I could not believe how 6 psi in the rear would add so much more road hum.

ALSO from the sound deadening I did the rain swish noise was greatly reduce.
PS you will lose quite a bit of your exhaust note. (Time to get that back with and aftermarket exhaust)

- I will also have my camber reduced to maximums or as close to neutral as possible as a further test later this week.

Testing makes perfect!

MacLean 05-29-2012 09:09 PM

Mwagner07 glad you finished everything up on B-Quite Ultimate install. I would agree that having the wrong psi (too much) would cause a lot of road noise.


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