nickpapp

I would like to quiet the interior noise in my '04 Base 6MT.
For those that have done this - is it better to use liquid paint type such as Lizard Skin, or better to use a DynaMat product?
The Lizard Skin seems pricey for a 1 gallon that only covers 20-25sq ft. its at $118
For the DynaMat - would the Kilmat, Noico and Siless be equivalent products?

Also- having read the threads on this subject - many suggest putting a sound deadener under the hood, then next area would be seating area for the most effectiveness.

Any suggestions are welcome.
TIA ​​​​​​​

jdmfetish

iTrader: (3)

If noise is the prime target Deadener mat.
If heat if the prime target Spray.

dkmura

iTrader: (64)

Sorry to say, if the OP wants a truly quiet car, the Z33 is honestly not the best choice. Nissan's design priorities included light weight and performance, so sound proofing was kept to a minimum. For my street Z, I've used a bit of dynamat behind the MB Quart speakers installs, but I've kept it to a minimum. On certain roads and pavements, there's simply no way to quiet the tire roar and interior noise.

Our Infiniti G37xS is built on the same FM chassis, but is far quieter. Infiniti had a different set of priorities for that vehicle.

jdmfetish

iTrader: (3)

Well he already owns it, and he wants to quiet down what he has.
I used 3 packs, of 36 sq. ft stinger road kill. I did the floors , driver / passenger , trunk floor, all double layered.
It did quiet down the car.

nickpapp

Thanks for all the replies. Very helpful!!!

Zelduh

My brother is over the moon smart & has been in the audio design business for probably 35+ years. One of his first few questions about the use of it was to have me pinpoint where the most offending noise emanated, apply it there (it need not be 100% coverage) and reevaluate the next target.

The most recent project, my son's now gone Silverado benefitted from the back cab wall and roof. There wasn't much difference with the floor, but we did it anyway. The most amazing transformation was when doing the roof, it was 95° outside and it was drastically cooler *as we were applying it*. He suggested HushMat as an alternative to Dynamat. The price point was better and performed very well.

I'm not an audiophile, but I love a vault like road car experience. I wouldn't expect much sound absorption from a spray on coating.

nickpapp

Thanks for the reply. Looks like I will pass on the liquid stuff. My noise seems to be coming from the passenger compartment - and I will start there. Thanks for the tip on Hush Mat!

Kalash

Definitely go with the DynaMat type product.
I have already tried Noico sound deadener on another car and it is quite nice, way cheaper than DynaMat and probably extremely close in terms of sound deadening.

nickpapp

Thanks for the nod to Noico.

Jim Stephens

I did the most of the rear of the car (seats back) with DynaMat. Took the Rear tire out and all the trim work in the back trunk area and just started cutting pieces and sticking it down. Used a tennis ball to press it into the curves and a 2" roller for the rest. You do not have to cover every square inch, but get the majority. Made a very big difference in the sound! Much better. Pay attention to getting the wheel wells good.

The next thing I did is use the DynaMat-DynaPad. I used this just in the cubbies right behind the seats. This is some seriously thick, dense, heavy material. Previous owner had taken all the insulation out and that area right behind the seats and it is like a metal drum. On the driver side (no subwoofer) just popped open the plastic cover and cut a piece to lay in there. On the passenger side, you can open the glove box, take out that plastic tray and then cut a piece and stick through that hole. I used Dynamat and stuck that down in there first and then the Dynapad. Another huge difference.

Not sure if I will go any further with it. I have seen people do the doors(used some in the speaker openings when I installed new speakers) and under the floor mat and then the roof. At this point, I have it quieted down to where I am more hearing the tire noise rather than every thing else. Not ever going to be like a luxury car and not what I want, but now it is at a good muffled level for me and it's good for long drives. If I ever pull the seats and get under the carpet, I might stick some Dynapad in there. Good heat insulator as well. My son was complaining about the additional weight, but I told him we will take the spare tire out when we run autocross and it will be a wash. LOL

The DynaPad is really only good for like under the carpet and big flat areas mostly. Very think and heavy. The Dynamat works well for all the other places.

nickpapp

Jim - Thanks for that detailed reply, and the suggestion for using a tennis ball. I will take your advice and start with the trunk/spare tire, and see what to do behind the seats. Crutchfield is having a good sale and I ordered the Dyna Mat. Thanks again.