Alight guys had a question.

Mainly for road noise, would on layer of dynamat extreme covered in the trunk/hatch area help at all?

basically is it worth it?

thanks!

also anyone tried out peel & seal? lol

http://www.youtube.com/watch?v=d3KdEHoq2l4

 

I used dynamat along with another foam material on top and I didn't notice any difference at all. In my opinion from my experience it wasn't worth it at all.

 

awwwww that sucks!

pulled out my interior for nothing lol

 

peel and seal is asphalt based, you need to use butyl rubber bases such as dynamat exteme, or eDead if you want to save money (eDead about 1/2 the price of dynamat. plus peel and seal smells bad.

you would be better off doing the floor and door panels, not the hatch for road noise.

 

maybe i worded it wrong.

the floor trunk arear. where the spare tire lays.

anyone else have more input? on improvment for road noise after this mod?

thanks!

 

This is what mine looked like. I only used dynamat because I used my employee discount at Best Buy and got it cheap. Hopefully your results will be better than mine.

 

I'm getting ready to do mine tomorrow in my 370. I can't help but think that it will be better. I'm driving around right now with everything out of the back end and it sounds like I'm driving with the hatch open.

I'm purely speculating, but you may not notice as big of a difference in the 350 as the 370. Oddly enough, my 370 is a lot quieter up front, but the back end is raucous, especially with the bigger wheels and tires.

I wouldn't see why it wouldn't help. Basic physics say that it will.

 

im gonna try it out too.

i think i will go with b-quite extreme and top it off with Vcomp.

does that sound right?

also b-quite > edead?

thanks

 

I did my trunk and the inside of the trunk plastics and it made a pretty noticeable difference for me And I used eDead which everyone seems to think sucks.

 

I'm a fan of B-Quiet and also a liquid roll/spray/paint on product from Cascade. The Cascade stuff is like really thick undercoating - but it doesn't smell or look anything like it.

I'm planning on using cascade over the complete rear end on all interior panels then the B-Quiet foam products on the flat areas!

A little expensive, but should make things tight as a drum... without the drum sound.

Oh yeah - and expanding foam (minimal expand) is a good thing to seal off dead air areas - just dont get it jambed between body panels!

 

OP you should do the entire floor of the car. also i have used eDead before and liked it. i have also used dynamat extreme and tsunami silencer extreme. eDead was fine for me and worked as good as the others. there are plenty of good silencers out there. just make sure that you get butyl rubber based no matter the brand.

also there are different levels of eDead. so when deciding what to use look at the thickness of it.

you will be best off doing the entire floor and door panels.

 

Raamat is a good alternative, Second Skin if u want the best. But sound deadening will won't really help with the road noise unless you take extreme deadening and do stuff like deadening the fenderwells and everything. I think you chose the wrong car, the Z is a very noisy car. I just turn up the radio. It's what happen when you drive with a hatch that's incabin, gotta deal with it I suppose.

Take a look at this...gets quite pricey though.

http://www.secondskinaudio.com/produ...d-Barriers.php

Edit: forgot to mention these stuff does add a tremendous amount of weight, it probably is not going to be worth it in the end unless you must have a quiet car and want the z to be sluggish.

 

i know i wont be getting lexus quiet with some sound deadining lol

but just seeing if you quiet downt he car some.

tonight i bought some fender lining spray? it said for fender walls and its a rubber compound. really easy to apply. also said it adds sound deadining.

i just put it on, and letting it dry over night. see if that helps any. i hate the sound of pebbels and rocks hitting the fender well lol

 

Hey i use dynamat and i think it work great. I used about 10 trunk kits to do the whole car. it took a long time to do. I want to say that i spent about 10 hours to do this if not longer. broke lots of tabs and 50lbs later. I used so much cuz i did a whole set up. If you need a deal on Dynamat let me know.

 

I deadened my car and noticed the difference.

I did everything behind the seats with one layer and two layers over each wheel well. Prior to the treatment every single little pebble/grain of sand made noise. Now not so much. The smell went away after a few weeks. I don't buy the magic juice but only the added mass makes the difference, the thickness isn't enough to make a frequency difference so the primary effect is the added mass. A heavier object is harder to get to move so sound energy has a more difficult time vibrating a treated panel. Peel and stick or paint it on works IMHO

PS: Good video!

 

Try FatMat!!!! I have it in my car and its good stuff. They have a floor liner specifically made for road noise. Its a heavy duty rubber liner that has adhesive on the back and you just peel and stick it down. I believe its cheaper then dynamat also, but check their site to be sure, its been a while since I looked into this. Good luck!

 

I'm spraying the entire rear area, and doors with Second Skin Spectrum next weekend...
Will go about 2 mil in areas.

DONT use Peel and Seal... You will regret it... Smells really bad...

Check out eh second skin stuff, works very welll.

 

I think Dynamat is as good anything out there that’s sold for the aftermarket.

Some thoughts:

• The Z is noisy. That’s especially true of the coupe since the rear wheels are inside the car.
  
  
• As Paul mentions, sound-deadening the rear cargo floor and rear wheel wells provides the best improvement for the $$.
  
  
• Installing deadening in the front certainly helps, but this project involves additional effort and co$t.
  
  
• When installing sound deadening, try to eliminate as many gaps as is reasonable. Gaps allow sound “leaks.”
  
  
• Always install sound deadening in the doors when you replace the speakers. You already have the door apart.
  
  
• Sound deadening from the factory is probably better than what you can do by adding aftermarket products. Examples: The Corvette is relatively quiet, and this is accomplished using custom fitted panels that are thin and lightweight. The Infiniti G is quiet comparing this car to the Z. Some of this is because the rear wheels are inside the car’s trunk; but overall the G is much quieter than the Z, and that is because the G has factory installed sound deadening.

And finally, remember you didn’t buy the Z for its luxury. You bought this car because it’s a great handling two-seat sport car that is affordable, and is track-capable “right out of the box.”

--Spike

 

i gonna add some of this to the exterior wheel wells.

http://www.secondskinaudio.com/sound...r/spectrum.php

i got the idea cause on my mercedes and lexus, the rear wells are lined with FELT.

so i added some felt to mine too and helped alot with pebbles hitting the well.

so my plan is to add this and cover with felt.

 

To save on material it isnt important to cover all areas it actually wastes deadner which in turn waste $