Sound deadening

[j0n]

I want to cover the entire inside of my iroc in sound deadening in an effort to eliminate rattles, however I'd like to refrain from spending the $1000+ paul spent on his camaro for dynamat. Any cheap alternatives that work well? I'm not trying to make my mad tyte system thump like whoa I just want to get rid of road noise. thanks

[NightRydaSS]

there is no cheap but effective way, at leat as far as im aware of and i sold sound equipment for over a yr.

[Knipps]

there's cheaper stuff than dynamat that ppl like, :google:

[camaro2you]

your biggest noise that will piss you off is the door lock rods.......gm......

[j0n]

aaaaaaaaaaaand back on topic...less expensive alternative to dynamat go

[Z28Justin]

hushmat, fatmat better and cheaper then dynamat.

[Knipps]

aaaaaaaaaaaand back on topic...less expensive alternative to dynamat go

:google:


bum.

[j0n]

fine ******* i googled it and the best product appears to be the RAAMmat BXT by RAAMaudio. It's not the best stuff on the market but it is by far the best value so I just ordered 3 rolls of 15"x50'

[Knipps]

:laugh:


:grin:

[BonzoHansen]

...in an effort to eliminate rattles...

It is the little details that help. The lock rods/door hardware do rattle, and dynomat won't change that (unless they hit the mat, I guess). I put vacuum hose over them. When I put the 82 TA back together, I put a lot of what we called 'dum-dum' on the back of a lot of parts, especially dash parts. That car had zero rattles/squeaks when it was done. No dynomat (which would have cut down on road noise, no doubt). I'm sure the new GM t-top weatherstrip was a big help too. Anything you can do to tighten up all the areas that get a bit loose over the years and can't be tightened up very well anymore. A little shimming here & there, etc.


This stuff: http://www.eastwoodco.com/jump.jsp?itemID=1621&itemType=PRODUCT
You should be able to get it locally.

[j0n]

It is the little details that help. The lock rods/door hardware do rattle, and dynomat won't change that (unless they hit the mat, I guess). I put vacuum hose over them. When I put the 82 TA back together, I put a lot of what we called 'dum-dum' on the back of a lot of parts, especially dash parts. That car had zero rattles/squeaks when it was done. No dynomat (which would have cut down on road noise, no doubt). I'm sure the new GM t-top weatherstrip was a big help too. Anything you can do to tighten up all the areas that get a bit loose over the years and can't be tightened up very well anymore. A little shimming here & there, etc.


This stuff: http://www.eastwoodco.com/jump.jsp?itemID=1621&itemType=PRODUCT
You should be able to get it locally.

good stuff thanks...any idea on a guestimate for how much I should get?

[BonzoHansen]

Of the 3M stuff? 1 box is enough for a couple cars.

For stupid little stuff, don't overlook weatherstripping and such at Home Depot. I just used some to seal the heaterbox to the insdie firewall. I'll be using dum-dum for the HVAC case to the engine side firewall.

[3.4 grape of wrath]

I know this post is old but I was searching for some info on this topic. My son told me he used some insulation from the home depot and it worked great for him. The price is so much cheaper also. Has anyone tried this in their car?
I'm thinking of giving it a shot.
http://www.homedepot.com/webapp/wcs/stores/servlet/Navigation?storeId=10051&categoryID=531843&langId=-1&catalogId=10053&cm_sp=bcfa4a44-c715-4935-a5cf-13b518b2a919

[3.4 grape of wrath]

OK I guess I'll be the first.

[edpontiac91]

Why not try to eliminate the source of the noise by getting a set of subframe connectors and a strut tower brace?

[usp55]

http://i188.photobucket.com/albums/z267/usp55/IMG_20101028_172742.jpg

3.4 - I used this stuff from lowes in the back of my tahoe to help with exhaust noise. I put two layers down from the rear seats back and it really helped alot. I have had it there for about a year and its still sticking like day one.

alot of perople uses the peel & seal from home depot then use a layer of reflectix for heat. Some love it cause its cheap and works pretty good and some love the exp name brand stuff. Its up to you.

[BonzoHansen]

No odors from that stuff?

[usp55]

None what so ever. We've had some nice hot days even this summer and with all the windows closed in the heat of the day there hasn't been any smell.

[HardcoreZ28]

FYI for any of you guys looking for sound deadener I'm a distributor for Dynamat and can get a pretty decent discount for you.

[LTb1ow]

FYI for any of you guys looking for sound deadener I'm a distributor for Dynamat and can get a pretty decent discount for you.

Rough estimate on how much it would cost to do 4th/3rd gen interior?

[HardcoreZ28]

Do you want to do the trunk area? Inside the doors? Up the sail panels at all?

[PolarBear]

FYI for any of you guys looking for sound deadener I'm a distributor for Dynamat and can get a pretty decent discount for you.

Good to know!

[amargari]

I did mine in Lizard Skin ceramic coating then a layer of 1/4 inch Ensolite IUO Peal and Stick. Added very little weigh to the car and stopped all the heat from the floor.

[WiMiMc]

Do you want to do the trunk area? Inside the doors? Up the sail panels at all?

trunk, rear wheel wells, doors, possibly seating floor

[WayFast84]

Would the ensolite iuo be the one for the heat? I need something bad!

[usp55]

no the ensolite is a closed cell foam for sound deadening. It will go over your heat barrier which would be just about any aluminum backed dynomat type material.

[amargari]

no the ensolite is a closed cell foam for sound deadening. It will go over your heat barrier which would be just about any aluminum backed dynomat type material.

Correct. The ensolite is for sound absorbing. Lizard Skin was used for a heat barrier.

[Coreylt1]

i did the entire interior of my old dodge ram with this stuff (the one in the center)

http://www.floridadisaster.org/hrg/images/roofs/tools_for_metal_roof_repair_large.jpg

its pretty cheap from home depot. you could double layer it if one isnt enough. some people say they get a tar smell in hot temperatures, but ive never had a problem at all with it. i put it in and forgot it was there.

[3rdGenHardtop]

For dynamat type materials, 25% coverage gives 90% of the results. This is what will save you money, not buying a cheaper material. Going nuts and covering the whole panel is overkill, and is just adding weight to the car. Tile a couple 1 sq ft pieces anywhere you see flat expanses of metal. Metal with stamped shapes into them are inherently stronger, and need little to 0 dynamat. Same goes for metal that bends, or attaches to a brace or a panel attached at a different angle.

The biggest problem is that dynamat only damps vibrations through long flat expanses of panels (think outer door skins). It does little to nothing to block low frequency noise (think 70mph up the highway hummmmm) contrary to popular belief.

Low frequency road noise is best blocked by a dense material such as MLV (Mass loaded vinyl) or a lead barrier. Lead not being the best for automotive use, and harder to come by, I'd say MLV is your best bet. http://secondskinaudio.com/index.php/products/mlv-noise-barriers/luxury-liner-pro-detail


Peel and seal or home depot roofing material is asking for trouble. This stuff gets soft and run's/melts with heat. It tends to have that asphalt smell as well. It is not intended to be an automotive product. At the very least, it stop's adhering to metal when heated. Avoid it at all costs. It's similar to using dryer ducting for your intake. Maybe it works to a degree, but there are much better solutions.

To sum this up, use dynamat on outter door skins, quarter panels, behind 6x9's, and on the roof, floor and trunk area floor w/ 25% coverage being all that's needed. Then apply a layer of MLV to the floor under your carpet, and watch how much quieter your car will get.

Unfortunately this won't eliminate all the rattles, but some felt tape, strategically placed foam, replaced panel clips, and a little creativity will get rid of most or all of those.

F-body's don't need to be noise boxes, and even the guys who don't care about music in the car can enjoy a quieter F-body.

[PolarBear]

For dynamat type materials, 25% coverage gives 90% of the results. This is what will save you money, not buying a cheaper material. Going nuts and covering the whole panel is overkill, and is just adding weight to the car.

I wish more people understood that. I see all these projects online and see people putting 100% coverage with the dynamat and think how they wasted time, money and are only making the car heavier.