The Stovebolt Site Forums The Shop Area General Truck Talk Can you explain soundproofing

Can you guys give me an explanation of what soundproofing the cab is? Is it something I can do myself or does it require outside help? I mean I can kinda figure that you need the right rubber seals and padding to doors and stuff, but what else goes on in this process. I see the old timers talking about it here on the bolt as if its quite an involved project.

You can buy some sticky pads at a auto supply.just pill an stick on roof an doors.that will cut the noise road noise and vibraction down.undercoating will also help

Anything you can do to seal out wind, road, and engine noise will be sound proofing, and there are a number of ways to do it.

One that we all found that worked well was a product called 'Peal N Seal'. It is an asphalt based product backed on to a foil. You place it on the cab floor (or anywhere else) and it works like 'dynamat' but it is much cheaper and it sticks where you put it. I used it under my heavy duty rubber mat on my 59 and it was a big improvement.

This time I got a big roll of insulation to go with it that is also aluminum foil sealed on both sides for my 72 truck.

Carpet helps - really deadends the sound, and the trucks also had a jute mat that got stuck to the firewall on the inside of the truck above your feet.

You can also spray on a heavy undercoating/sound deadner on the bottom of the truck and that will help as well.

On the various luxury cars I have had (such as buicks and lincolns) you often found 1-2" insulation stuck under the hood to dampen engine noise.

And all of that stuff can be put behind the in cab gas tank to further deaden noise as the truck is a big sheet metal shell and does resonate pretty well.

Then you can get quieter mufflers, make sure the door windlace (seals) and window channel felt seals are in good shape and that the rubber grommets on the fire wall are all in good shape and are sealing up.

That's what I can think of off hand. I have noticed that newer vehicles have no exposed cab metal now, and so its obvious that all that covering material must also make the thing quieter.

arnswine is right... there are some good tricks out there... the peal n' stick roofing stuff he talked about is available at any large box building supply store. Do yourself a favor and apply that to your entire floor and strips inside your doors. Buy the jute carpet padding at any carpet store and use 3M's 77 spray adhesive... lay that down over the peal n' stick. It all works. Also check out the Interior Forum for more about the topic. And be sure and go to Alan Horvath's website (url on the Interior Forum) for more on these topics.

Read about these:
With the dynamat (resonance killer), you only have to cover a portion or percentage of the area (tin or sheet metal area). When covering larger sections of say the large roof area use several patches or strips. A roll is about $55.00.
all the above responces have it covered. Make sure (ha-ha) that your window rubber seals are good because of the moisture inside the cab floor on jute will hold the wet inside the cab.
> http://www.dynamat.com/
> http://www.quietride.com/faq/default.htm
> http://www.stockinteriors.com/HeatSound.asp?ItemId=4783&MakeId=&ModelId=

One thing I do not recommend is that spray foam insulation that you use around the house. It traps moisture and could cause a rust thru in time. The dynamat seems to be the answer but make certain if you use anything that has an exposed edge that it too gets sealed.

my friend used dynamat in his truck to reduce roadnoise and vibration. it worked all right..in the end an old truck is noisy and vibrates so you can expect results but only to a point. Personally I enjoy the noises and vibrations of my truck, it lets me know things are still working. when noises and vibrations stop i start to get worried.

Only if the stove bolt engine starts to run quite.then look out.If the valves an ya don't hear a knock something is wrong.this is there trade mark .Just like a Buick,you can hear them comming 3 mi down the road