hi guys i have a 92 civic si and i hate when im on the freeway and the faster i go the more road noise i get is there something out ther that would help eliminate some of the road noise. i heard dynamat works pretty well but not sure if it does. any advice as to what i can do would be nice. i forgot to mention my car is low so thats probably why i have more road noise.

 

dynomat works decent. i put some in my car and it helped a little

 

There are a number of things that you can do, Dynamat is one of them, but limited in getting rid of road noise.

If you are prepared for a fair amount of work, you can drop the "noise floor" of your car by a lot.

The question is are you prepared for the work, do you have the time, tools and a place to do it, and the money of coarse?

How far are you prepared to go, how much noise do you want to get rid of, as much as possible, like the inside of a BMW 7 series or a big Benz? 94

 

i would like to minimize road noise as much as i can atleast a good percentage. i would like to tone it down a bit and not waste a lot of time. i guess im looking for something atleast better than what it is now but not costly.

 

Most of the cost would be labour, it is time consuming, but if you do it yourself, you save a bundle.
To do it properly will require you to pretty much gut the cars interior, all but the dash. You will also need to remove the front plastic inner "fenders".
Most of the noise comes from your tires, and enters the pass. compartment at the rear "wheel wells" and the front fire wall/kick panel area.

You can start by picking up some spray "rubberized undercoating", remove the rear wheels, cover all suspension and wheel hub/brake parts, have a piece of cardboard or something under the wheel well, [when I do them I drive the car onto a sheet of plastic].

Spray the inside of the wheel wells with the rubberized undercoat, several thin layers, [allowed to dry] will work better then thick layers.

For the front, also remove wheels, you will also have to remove plastic inner fenders and cover suspension and wheel hub/brake parts, I also open the doors and tape off the opening between the fender and chassis, so you do not get undercoat all over the door, in the front you do not spray the inside of the fender, [unless you want to rust proof it] you spray the area around the kick panel/"A" pillar and fire wall.
The tape off the "contact" areas of the plastic inner fender and spray the inside of the plastic, from the bottom, [door end] to about half way around.
Again several thin layers built up works better then thick layers.

If you do the above properly you will notice an improvement right away.
You can then decide if you want to go farther, doing the inside of the car. 94

 

i didnt know rubberized under coat worked. i also took the mud guards off from under the fenders because they were damaged . could this be a reason why i have a lot of road noise?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by moz92 &raquo;</TD></TR><TR><TD CLASS="quote">i didnt know rubberized under coat worked. i also took the mud guards off from under the fenders because they were damaged . could this be a reason why i have a lot of road noise?</TD></TR></TABLE>

Yes that will cause a lot of road noise.

There are a few companies that make less expensive sound deadening material besides dynamat (although if money is no option they make great products).

Check out this stuff, I have used their "extreme" stuff in the last 2 vehicles I've sound deadened.

http://www.b-quiet.com/

-Nick

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by moz92 &raquo;</TD></TR><TR><TD CLASS="quote"> i also took the mud guards off from under the fenders because they were damaged . could this be a reason why i have a lot of road noise?</TD></TR></TABLE> Absolutely, besides blowing all sorts of crap up to your door hinges. 94

 

I guess i will have to go hunt for some mudguards then. thanx for the info guys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote"> Absolutely, besides blowing all sorts of crap up to your door hinges. 94</TD></TR></TABLE>

wait, I think he's talking about the little rubber mud guards that hang down behind the wheels, which are optional on most cars. Not having those should not make a difference at all in road noise inside the cabin, and certainly wouldn't make the inside door jamb dirty. You're thinking of the fender liners, which certainly would get the door jamb super dirty if they weren't there. I know because my car didn't have the passenger side one when I first bought it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PatrickGSR94 &raquo;</TD></TR><TR><TD CLASS="quote">

wait, I think he's talking about the little rubber mud guards that hang down behind the wheels, which are optional on most cars. Not having those should not make a difference at all in road noise inside the cabin, and certainly wouldn't make the inside door jamb dirty. You're thinking of the fender liners, which certainly would get the door jamb super dirty if they weren't there. I know because my car didn't have the passenger side one when I first bought it.</TD></TR></TABLE> I agree, however his discription makes it sound like the liners as I had mentioned spraying the insides of the liners, [plastic inner fenders] and he said... " i also took the mud guards off from under the fenders because they were damaged "

moz92 are you talking about "mud flaps" or the inner fender, [fender liner]? 94

 

sorry guys i meant the liners. they are the ones keep crap and water out the inside of your door. i really need to find some of these

 

Absolutely, I have been driving around for about 3 weeks with no front clip and no liners, [mod. clip and new fenders going on, we had one day of rain, what a hell of a mess, almost **** when I opened the door to a loud scraping/grinding sound, only to find it was only sand/gravel in my hinges, my pass door stuck about half way when opening it, it turned out to be a rock about the size of a dime, that got jambed in the upper hinge.
Because I am replacing the fenders, I will be doing the rubberized under coat with the fenders off, all the way up to the doors gasket line, new fenders already rust proofed inside and premiered inside and out, got the clip back this morning, no more rock chips for this Teg, whole front clip is Armourgard sprayed, even going to leave it black, I like it, I like it a lot. 94

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote">Absolutely, I have been driving around for about 3 weeks with no front clip and no liners, [mod. clip and new fenders going on, we had one day of rain, what a hell of a mess, almost **** when I opened the door to a loud scraping/grinding sound, only to find it was only sand/gravel in my hinges, my pass door stuck about half way when opening it, it turned out to be a rock about the size of a dime, that got jambed in the upper hinge.
Because I am replacing the fenders, I will be doing the rubberized under coat with the fenders off, all the way up to the doors gasket line, new fenders already rust proofed inside and premiered inside and out, got the clip back this morning, no more rock chips for this Teg, whole front clip is Armourgard sprayed, even going to leave it black, I like it, I like it a lot. 94</TD></TR></TABLE>

Any pics of that? I lined most of the bottom and sides of my passenger and cargo cabin with eDead rubberized sound deadening (w/ the foil layer) but it didn't seem to help much as far as tire noise and such. I've been thinking of adding a layer of foam inside my door panels. But if there's something cheap I could do inside the fenders then I'm all for that.

 

Rubberized undercoat, works like a damn, carried at most auto parts shops, been using that stuff for as long as it's been around, long before Dynamat and eDead and any other automotive sound dampening material.

Another, relatively inexpensive material I use for sound abatement is automotive carpet underlay, Honda/Acura, [other then their high end cars] have little or no underlay, covering your floor, anything [under the carpet] with this will help a lot. 94