Car insulation

Author Topic: Car insulation  (Read 6351 times)

Offline shoooter

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Re: Car insulation
« Reply #15 on: May 20, 2013 - 01:09:35 AM »
I now have everything out of the interior. I removed the old factory insulation, do I replace that with the same stuff or can I do the whole firewall in the sound deadener? Do you do the roof also?





Offline shoooter

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Re: Car insulation
« Reply #16 on: May 22, 2013 - 04:41:22 PM »
 :feedback:



I now have everything out of the interior. I removed the old factory insulation, do I replace that with the same stuff or can I do the whole firewall in the sound deadener? Do you do the roof also?

Offline HP_Cuda

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Re: Car insulation
« Reply #17 on: May 22, 2013 - 06:51:28 PM »
You can buy the insulation pieces from Yeardone or many other outfits.

I have included a pic here which shows a couple of new pieces.

Btw, under the carpet I have fatmat installed.
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD

Offline Surfmichaels

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Car insulation
« Reply #18 on: May 22, 2013 - 06:51:32 PM »
I thought long and hard about this tarry, gooey, sticky, never to be removed easily under floor insulation.

My decision was not to use it.

Since I'm going with 2.5" stock manifolds, it should cut down on decibels considerably.
The engine will get about 6-10 mpg. Certainly not a daily driver qualifier.

As far as heat: I do have a special insulation (NASA good stuff thats not sticky) on the floor areas that keeps heat from penetrating into the interior. Keeping heat out is more of a concern.


Topcat can you share more info on what you used? I had a fully stripped miata and could hear everyone including rocks pinging underneath the car. It was very engaging but the heat in the floor well and along the transmission tunnel was intense. My 73 cuda will be totally stripped interior but 'd like to add something to keep my feet and right leg from being cooked. I am removing the Dynamat that the PO installed and would love to find a solution that isn't so permanent. Word of warning if you install any viscoelastic material (Dynamat,fatmat) you better want it forever.... It's taking tons of effort to remove.

Offline ntstlgl1970

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Re: Car insulation
« Reply #19 on: May 23, 2013 - 01:52:38 AM »
I now have everything out of the interior. I removed the old factory insulation, do I replace that with the same stuff or can I do the whole firewall in the sound deadener? Do you do the roof also?

I did the roof on my car, made a huge difference in reducing the noise inside the car - try knocking on the roof sometime, it's like an empty drum without the sound deadener. I also used expanding sound deadening foam between the roof skin and the crossbeam too which also helped.
70 Cuda, 7.0L Gen-III Hemi, Viper T56 w/9310 gearset, 3.91's, Megasquirt MS3x v3.57, Innovate wideband, Firm Feel upper arms, torsion bars, springs and strut rods, QA1 DA shocks. I did everything on this car except the fancy paint stuff and I drive it...and I can't seem to stop messing with it....

Offline 73EStroker

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Re: Car insulation
« Reply #20 on: May 23, 2013 - 06:54:59 PM »
 :iagree: I used a product everywhere including the roof. It now is bearable in 100ºF heat. Product is about $250 to do the entire car including the trunk and door exterior panels. It is a bitumen like sticky side with tin foil on it. Sticks like $h'ite to a blanket.  Called B-Quiet. They also told me on the phone it is suitable for the roof even in a place like Arizona in summer.
Barry (Salmon Arm)

Offline shoooter

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Re: Car insulation
« Reply #21 on: May 23, 2013 - 07:01:09 PM »
thanks for the info I already bought the insulation and I am planning on doing it real soon. Question was about the firewall but ill grab some stock insulation. does it come in a kit? I am planning on doing the interior , inside of the doors, roof but not the trunk, i will leave that painted

Offline ntstlgl1970

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Re: Car insulation
« Reply #22 on: May 23, 2013 - 07:59:11 PM »
thanks for the info I already bought the insulation and I am planning on doing it real soon. Question was about the firewall but ill grab some stock insulation. does it come in a kit? I am planning on doing the interior , inside of the doors, roof but not the trunk, i will leave that painted
I plan to do my firewall and the cowl area with dynamat - the best prices I found on it was on Amazon of all places. I ran dynamat under the carpet and floor and tunnel shield on the underside of the car. Really cut down on the heat transmitted into the car from the exhaust
70 Cuda, 7.0L Gen-III Hemi, Viper T56 w/9310 gearset, 3.91's, Megasquirt MS3x v3.57, Innovate wideband, Firm Feel upper arms, torsion bars, springs and strut rods, QA1 DA shocks. I did everything on this car except the fancy paint stuff and I drive it...and I can't seem to stop messing with it....

Offline shoooter

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Re: Car insulation
« Reply #23 on: May 23, 2013 - 09:28:19 PM »
I plan to do my firewall and the cowl area with dynamat - the best prices I found on it was on Amazon of all places. I ran dynamat under the carpet and floor and tunnel shield on the underside of the car. Really cut down on the heat transmitted into the car from the exhaust

I got a good deal on eBay. Will you still use the stock insulation or just the dynamat on the firewall?

Offline Topcat

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Re: Car insulation
« Reply #24 on: May 23, 2013 - 10:23:58 PM »
Topcat can you share more info on what you used? I had a fully stripped miata and could hear everyone including rocks pinging underneath the car. It was very engaging but the heat in the floor well and along the transmission tunnel was intense. My 73 cuda will be totally stripped interior but 'd like to add something to keep my feet and right leg from being cooked. I am removing the Dynamat that the PO installed and would love to find a solution that isn't so permanent. Word of warning if you install any viscoelastic material (Dynamat,fatmat) you better want it forever.... It's taking tons of effort to remove.


It's about 1/4" thick. Originally used for buildings.

After talking to Charlie, he told me this stuff was ideal for floor and roof areas on cars. He sent me some for practically free.

After I 3M adhesive spray; I put down a carpet insulation over it.

http://www.lowereflectiveinsulation.com/products.php
Contact Charlie at:    info at lowereflectiveinsulation dot com for more information.

Mike, Fremont, CA.


Offline Topcat

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Re: Car insulation
« Reply #25 on: May 23, 2013 - 10:30:50 PM »
And it's lightweight!

How Does LOW-E Reflective Insulation Work?
Mike, Fremont, CA.


Offline gafletch

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Re: Car insulation
« Reply #26 on: May 28, 2013 - 02:23:48 PM »
I'm considering a product on eBay called sound deadener, sold by flamekits1 . It's 50ml thick, 50 sq ft for $60 shipped.  It doesn't  appear to be the bubble type of product like ez kool, but a rubber and aluminum barrier.  Have you heard any feedback?  Thanks, Greg.

Offline ntstlgl1970

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Re: Car insulation
« Reply #27 on: May 28, 2013 - 03:52:33 PM »
I got a good deal on eBay. Will you still use the stock insulation or just the dynamat on the firewall?
I won't be using the stock insulation at all, just the dynamat and then some generic carpet underlayment from summit that is aluminized on one side that I glue to the the dynamat
70 Cuda, 7.0L Gen-III Hemi, Viper T56 w/9310 gearset, 3.91's, Megasquirt MS3x v3.57, Innovate wideband, Firm Feel upper arms, torsion bars, springs and strut rods, QA1 DA shocks. I did everything on this car except the fancy paint stuff and I drive it...and I can't seem to stop messing with it....