i want to sound deaden my car. any tips ? hints?

[Manuelitoohno]

I tried to search but all i get is noobs that say

"i want to remove the sound deadening from my car" threads like that.


and i really want to do the opposite.



I herd dynamat is the way to go.

but also quick roof? is another alternative?


oh well i think unlike most cheap 240 owners here that are froogle as fuck id go the dynamat way. i rather have quality then shity material.

but my main question is.


to those that have sound deaden your car. besides the doors and hatch what other places have you put dynamat in? those buying extra for the roof, floor all the way through, really make a difference or should i be good to go with just the doors and hatch?

[lflkajfj12123]

you can dynamat from the firewall all the way back to the hatch

anywhere else id think would be a waste of time and money

[BustedS13]

there are other threads on this, but yes, dynamat is the best way to go. i'm in the middle of covering all surfaces in my hatch with FatMat.

i've heard over and over that filling cavities with foam blocks and such is another great way to kill noise, i'll probably be doing that once i fabricate a new interior.

[Manuelitoohno]

there are other threads on this, but yes, dynamat is the best way to go. i'm in the middle of covering all surfaces in my hatch with FatMat.

i've heard over and over that filling cavities with foam blocks and such is another great way to kill noise, i'll probably be doing that once i fabricate a new interior.

yea i herd that too.


well i know a guy that used carpet foam (the padding) and pud it on top of the sparetire hole and then put the carpet back on top and it worked.


so basically what you guys are saying. doing the roof will be a waste of time and money?

[lflkajfj12123]

yes

most of the noise and vibration you'll be dealing with come from the bottom of the car

dynamat on the top would prob just help with heat from the sun and flexing noises? thats about it

[Bmadd]

no, I think you would kill a lot of wind noise doing the roof. I removed my headliner, and there was a lot more noise. I think there is room for improvement.

[lflkajfj12123]

i suppose thats true but dynamat isnt cheap

exhaust noise and road vibration would be my main concern and its relatively easy to do the whole bottom

[BustedS13]

fat mat/b quiet/etc isn't all that expensive, like a little more than a buck per square foot, really. my main concern would be with the shit melting if you put it on the roof.

[Manuelitoohno]

thanks guys :) im prolly gonna dynamat the hatch and doors, and floor

and try to do quick roof on top to see if it helps

[soreballz]

Expanding foam and spray on bedliner.

[projectRDM]

Expanding foam and spray on bedliner.

Bingo. We just did a big thread on this, you suck for failing to search.

[Manuelitoohno]

Bingo. We just did a big thread on this, you suck for failing to search.

shit man im sorry i didnt think of anything else to search besides sound deadening

do you have the link to th epost?

[SlideWell]

i wouldnt Dynamat your car if you want a quieter ride. it turns the interior noise down only a notch. not worth it for the weight you add. ive dynamatted my entire last S14 and was not happy. i spent $500 in dynamat (retail $1200) and the best thing it did was just take out vibrations. s-chassis will always be cars with a high level interior noise. id look along the lines of a foam filler. in the end, i will never dynamat my car again unless im rocking a 10,000 watt stereo lol.
http://i11.photobucket.com/albums/a196/PearlWhiteS14/DSCN4618.jpg
http://i11.photobucket.com/albums/a196/PearlWhiteS14/DSCN4611.jpg

[Manuelitoohno]

damn bro so what do you have now?>

[ayuaddict]

i too would like to apply some sort of sound deadening to my car, ive never had a problem with road noise in my S13, simply because i accepted it for what it was, but with my S30Z i would like a luxurious feeling. i understand that bedliner works well for stripped cars where a tar or foam based mat(s) would just look stupid. however i have (a pristine) full interior that i plan on keeping. are there any good ways to deaden road and exhaust noises with a non adhesive based product? i also have an extremely clean chassis that i would like to keep that way, original, so i dont want to go and glue tar to it...say for example a foam blanket i can put behind door panels, under the hatch, under the trunk board, under the floor mats, transmission tunnel etc?

am i being too picky?

is such a product too good to be true?

[BustedS13]

^don't be a baby, dynamat it. if you REALLY don't want dynamat in there later (seriously who is taking this shit out after putting it in? who are you people, everybody says this), you CAN. it's NOT IMPOSSIBLE. you aren't hurting anything by putting it in. peel, stick. heat with heat gun. go over with a roller. done.

[xpertsnowcarver]

The Ultimate in a Sound deadening paint (http://www.soundproofing.org/sales/liquid.htm)

Not sure how much you'd need.. 5 gallons for $420 seems pretty steep though.

[ayuaddict]

alright, fair enough.

so, dynamat:

its pretty pricey, is it really worth the money? i have seen other products that are significantly cheaper with the same basic idea, are they significantly inferior? whats the best bang for the buck?

please, feed me with a spoon.

[TravisSW]

I've always wanted to do this, but has anybody calculated how much weight you may be adding on?

[ayuaddict]

im guessing 20 pounds at most?

shit cant be that heavy right?

[SlideWell]

if you Dynamat an entire S-chassis like i did, you will add an easy 100lbs

[projectRDM]

Bedliner is a much better choice over dynamat, and way more permanent. I worked in car audio for over a dozen years, dynamat does eventually peel loose and fall off. With bedliner you also have the chance to fill in and cover any unused holes too, which helps to seal the chassis better and looks awesome. My car was down four years ago, it still looks immaculate. Afterwards all the interior goes right back in perfect. I paid a professional shop to do it, but they did every inch from footwell to rear trunk wall, up to the quarter windows and both sides of the rear deck. All you do for the bolt holes you need is thread extra bolts halfway in, pull them out and the holes are clean.

[mehsilvia]

Bedliner is a much better choice over dynamat, and way more permanent. I worked in car audio for over a dozen years, dynamat does eventually peel loose and fall off. With bedliner you also have the chance to fill in and cover any unused holes too, which helps to seal the chassis better and looks awesome. My car was down four years ago, it still looks immaculate. Afterwards all the interior goes right back in perfect. I paid a professional shop to do it, but they did every inch from footwell to rear trunk wall, up to the quarter windows and both sides of the rear deck. All you do for the bolt holes you need is thread extra bolts halfway in, pull them out and the holes are clean.

I would just be careful with which spray-in bedliner you use.

I had mine done professionaly by Extreme-bedliner, and it cures to a hardened surface. Great for weight savings, but made my rear hatch considerably louder!

http://i163.photobucket.com/albums/t282/mehsilvia/S13%20build/Interior/IMG_2295.jpg

For my new build, i purchased FatMat like Busted mentioned before. Its a cheaper alternative to Dynamat, and prob weights alot less.

http://i717.photobucket.com/albums/ww175/350sxVert/Interior/IMG_2801.jpg


Word of caution for those using the Dynamat/FatMat - i would only recommend this shit to be used with full interior. Leaving it exposed is gonna lead to a fucking mess in your car. The aluminum exterior is very thin, and once punctured, will leave the sticky shit exposed.

[240sxjohny]

you can also deaden the plastic covers by the seatbelts but thats dumb

[NINJASPY]

^don't be a baby, dynamat it. if you REALLY don't want dynamat in there later (seriously who is taking this shit out after putting it in? who are you people, everybody says this), you CAN. it's NOT IMPOSSIBLE. you aren't hurting anything by putting it in. peel, stick. heat with heat gun. go over with a roller. done.

don't be a baby and don't use dynamat, get more amps, more speakers and more balls. you aren't hurting anything by putting it in?? your cars weight/gas mileage/performance, and your $$$

wear earplugs if your worried about noise, or go drive a hybrid.

[Johny5]

shutup dude

i have more amps and more speakers and track my car and would still prefer an awesome dynamat'd car. take your crap elsewhere

[Bushido]

Russ, what brand of bedliner did you use on your car?

[projectRDM]

Russ, what brand of bedliner did you use on your car?

Line-X. I took it to their shop fully stripped, then pulled the entire harness out once I got there and laid it up on the dash crossbar. They did an amazing job, perfect tape lines. With the interior back in it's noticeably quieter but I plan to deaden it more when the time comes.

[BustedS13]

don't be a baby and don't use dynamat, get more amps, more speakers and more balls. you aren't hurting anything by putting it in?? your cars weight/gas mileage/performance, and your $$$

wear earplugs if your worried about noise, or go drive a hybrid.

you are completely retarded.

[garagelu]

Dynamat is built more for deadening vibration. You need something with more padding.

[mrflip69]

there's different types of dynamat. they have a foam/fiberglass/carpet type that can be used as insulation on both the floor and headliner.

[mastadon]

If you go to an autobody/paint supply store you can pick up some professional sound deadening sheets made by 3m. I do not remember the exact name, but it comes in sheets that are approximately 1ftx1ft and black in color.