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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Thu Apr 14, 2016 8:35 pm Post subject: Dynamat, ect. |
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So as it turns out I'm an old man now, so I guess it's time to do old-man mods or whatever. Namely I want to work on the sound deadening. Years of poor life choices have left me with terrible tinnitus and that doesn't work well with the whole Japanese-truck-as-a-rolling-beer-can.
I am thinking of using a brush-on product covered with an asphalt glued-on product. I am strongly temped to use bootleg internet recipes for both, because of course I am.
What do people like? What do you guys have experience with? |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
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Posted: Thu Apr 14, 2016 9:25 pm Post subject: |
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You're a carpenter.. throw a couple cans of spray foam in there... |
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QwkTrip 11sec Club
Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Thu Apr 14, 2016 9:47 pm Post subject: |
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I covered the floor of my Jeep Cherokee with asphalt stick-on mats and 1/2" of carpet padding and it did nothing for the sound. I think you've got to go all the way and do the doors and interior body panels if you want results. And you still won't have modern sound damping glass.
If you really want quiet, it's probably time to get a modern full-size SUV or truck. They are more quiet than cars it seems. |
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Dewey316 The Lama
Joined: 08 Jan 2004 Posts: 7295 Location: Bringing the tech
1990 Chevrolet Camaro RS
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Posted: Fri Apr 15, 2016 6:24 am Post subject: |
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What an aging group we are. Our boards now are sound deadening, and the advice is to buy an accord or SUV. hahhaa
On that note: The German cars also are fairly quiet inside, with the exception of VW or anything M |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Apr 15, 2016 7:19 am Post subject: |
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chevymad wrote: | You're a carpenter.. throw a couple cans of spray foam in there... |
Hey now, nothing wrong with spray foam as long as you can keep it from getting wet. Still, there are no cavities to fill, I need something I can apply to flat or curved panels.
QwkTrip wrote: | I covered the floor of my Jeep Cherokee with asphalt stick-on mats and 1/2" of carpet padding and it did nothing for the sound. I think you've got to go all the way and do the doors and interior body panels if you want results. And you still won't have modern sound damping glass. |
Oh I am absolutely going to do as much of the cab as I can: firewall, floor, back wall, roof, and doors. I don't have much real estate to cover so I may as well.
QwkTrip wrote: | If you really want quiet, it's probably time to get a modern full-size SUV or truck. They are more quiet than cars it seems. |
Thought about it but no one makes anything resembling a normal-sized truck anymore and I can't do full size, my cock is too big. It's a real problem, I know.
Dewey316 wrote: | What an aging group we are. Our boards now are sound deadening, and the advice is to buy an accord or SUV. hahhaa
On that note: The German cars also are fairly quiet inside, with the exception of VW or anything M |
This is very true. I was impressed with the amount of deadening in my BMW, especially considering that it was just a basic econo/sporty model and not even a fancy old-person Bimmer. Of course after I ripped all of that out it was one of the most miserable droney cars I have ever owned. |
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Alphius Peanut
Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Sat Apr 16, 2016 7:30 pm Post subject: |
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I'm hesitant to do something semi-permanent, but also interested in sound deadening. Let me know how the cheap DIY route turns out for you, Mr. Guinea Pig.
My truck is much quieter than the Camaro, and as near as I can tell the biggest difference between them is that the truck has nearly twice as thick of jute padding with a heavy rubber sheet over it, then a thick pile carpet. The Camaro has a thin and light jute layer with a tougher, shorter pile carpet. At least more padding is a reversible mod.
I remember reading something years ago that said any asphalt-based peel and stick or paint-on products don't dampen the reverberation noise of the panel itself very well, they only dampen reflected sounds. As such, they do contribute to a quieter ride, but they don't quell the primary noise as well as padding of some sort with an air barrier component. I was doing some reading after you mentioned this to me, and some people use a closed-cell foam product designed for duct insulation. Maybe something like that is worth a try?
http://www.homedepot.com/p/E-O-12-in-x-15-ft-Self-Stick-Foam-Foil-Duct-Insulation-FV516/100028603 _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow
Last edited by Alphius on Sat Apr 16, 2016 7:40 pm; edited 1 time in total |
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QwkTrip 11sec Club
Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Sat Apr 16, 2016 7:40 pm Post subject: |
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Alphius wrote: | I remember reading something years ago that said any peel and stick or paint-on products don't dampen the reverberation noise of the panel itself very well |
That's basically what a sound engineer told me when it didn't work on the Jeep. The whole idea is to change the vibration characteristics of the body panel so the panel does not transmit the sound as well. Problem is the frequencies we're dealing with in cars isn't in the range that the stick-on sheet works. You're probably better off with a thick acoustic pad. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Apr 17, 2016 9:59 am Post subject: |
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Well this has turned into a terrible rabbit hole.
It seems that most of the benefit of the paint-on Lizard Skin-type products is heat reduction which is not a concern for me, and combined with the annoyance and downtime involved with installing it I am ruling it out.
The whole mass load vs. barrier load thing is cool. I am not looking for a perfectly quiet Mercedes experience. This is an old truck with a four banger and a live leaf rear axle. I have no panel rattle (it's a Toyota, not a Chevy) and a minimal sound system (no amp or sub).
I think my current plan is to buy a small amount of butyl tiles (or maybe asphalt if I'm being cheap) to run in the door skins, back wall, floor pans, and roof. Then skin the entire thing with a closed-cell product like Ensolite or the stuff Gabe linked to.
My dash shell is crack city and I need to pull it all out and replace it with a new shell I purchased, so I think I will start with the firewall, then do the floor and rear wall since they are easily accessible. |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
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Posted: Sun Apr 17, 2016 11:28 am Post subject: |
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When you say asphalt product... I imagine you using 3 tab.
I've seen the guys on the 67-72 truck forum use the stuff Gabe linked. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Apr 17, 2016 1:30 pm Post subject: |
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Only the best, Brandon.
So I have been strongly considering going with this RAAMaudio mat and foam combo pack:
http://www.raamaudio.com/package-1-20-sheets-of-raammat-bxt-ii-37-5-sq-ft-and-3-yards-ofensolite-iuo-peel-and-stick-41-625-sq-ft/
To buy the equivalent amounts of an asphalt product (Peel & Seal) to replace the mat, and the closed-cell foam that Gabe linked to to replace the Ensolite, I would be in the neighborhood of $110 with tax plus the time going to pick it up. Plus I would then have to deal with doing the entire truck in product that comes in 6" and 12" wide strips.
The RAAM product is butyl instead of asphalt (no smell) and their foam is 36"x55" so there will be much less fiddling around and much less waste due to overlapped seams. All for $180 shipped to my door.
I really wanted a good bootleg scam, but I think spending money may be the wiser choice here. I really am old. |
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iansane Member
Joined: 16 Jan 2004 Posts: 5740 Location: Bothell
1991 Pontiac Trans Am
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Posted: Sun Apr 17, 2016 2:42 pm Post subject: |
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I used PeelnSeal. I love that stuff. It may be a it different not having a roof but the peelnseal + actual door panels all but eliminated the annoying noises I was getting straight up through the floor. It made the car so much nicer to drive. I know it didn't completely get rid of all the sounds but it quelled the frequencies that most aggravated me. _________________
Quote: | Sometimes I actually think I'm slightly retarded in the mouth. |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Apr 17, 2016 9:37 pm Post subject: |
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Heh, glad to see that silly thing sold. It was up on the local craigslist around Christmas time. I think they were asking 10K for the package then. |
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jchaussee Member
Joined: 14 Nov 2010 Posts: 1318 Location: renton
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Posted: Thu Apr 21, 2016 12:13 pm Post subject: |
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I used the peal and seal stuff as well. But as arron mentioned the small rolls don't cover much and it takes forever. I now have sprayed both underneath and inside of car with the ruberised stuff from harbour frieght. And the. Put 1/2 carpet pad down. But as I have no engine. Doors are not on and the interior is out I don't know how well it will work. But with 5 kids I was thinking of putting doors on it. Cutting hole in floor with a bucket and using it as my throne room. Because I need some damn peace and quiet |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Apr 25, 2016 11:29 am Post subject: |
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10% off sale on the RAAMmat and Ensolite foam suckered me in. We'll see how this goes! |
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Alphius Peanut
Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Mon Apr 25, 2016 2:39 pm Post subject: |
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*like*
Keep us updated. _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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