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Insulation and Sound Deadening

J

JonnybravoM3

Member
Hi all

So I'm installing a new 302 (306) BP motor (370hp) in my 65 vert and upgrading the transmission to a 4R70W.

To handle the extra power, I'm also installing welded subframe connectors.

I was also thinking, while at it, about dynamat insulation and sound deadening... anyone do this? Is it worthwhile?

Thanks!

JB

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I used Dynamat products when I did my car. Both the standard foil backed sound deadening and thermal blocking product as well as a pad on top. Very happy with it. Installed well in all areas and I have no concern about it staying in place in some tough vertical areas, etc. Car seems much quieter and "solid" sounding than cars I have had or been in without such products. I recommend to anyone who asks. I am also one to dispute the use of HVAC stuff in the same application. HomeDepot stuff doesn't do the same job. I work for a company that makes such things so I am a little "in the know" about the adhesion performance, water absorption characteristics and other properties of such materials.
 
Horseplay said:
I used Dynamat products when I did my car. Both the standard foil backed sound deadening and thermal blocking product as well as a pad on top. Very happy with it. Installed well in all areas and I have no concern about it staying in place in some tough vertical areas, etc. Car seems much quieter and "solid" sounding than cars I have had or been in without such products. I recommend to anyone who asks. I am also one to dispute the use of HVAC stuff in the same application. HomeDepot stuff doesn't do the same job. I work for a company that makes such things so I am a little "in the know" about the adhesion performance, water absorption characteristics and other properties of such materials.
Click to expand...
Thanks a bunch. So you would say go for it, with your eyes closed?


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Second what Terry stated.
I used:

Second Skin Audio Second Skin Audio
Damplifier Pro shop pack 80SqFt
3611 W. Cambridge Ave
Suite #3
Pheonix, AZ 85009
623-533-8193

I should have done my doors too.
 
I would certainly use some form of sound and heat insulation if you are going to the point of pulling the carpet out of the car. I did not use Dynamat, but used a couple of great products from Second Skin Audio. I used the Damplifier Pro all over the car to quiet it down, including the entire floor surface, inside the doors, as well as the roof (yes I know you have a convertible, so skip the roof). I then laid their Luxury Liner Pro over the Damplifier. The carpet fit over it just fine and now I have a nice and quiet, well insulated cabin.
 
KBMWRS said:
I should have done my doors too.
Click to expand...
When {.} came by a long time ago to lay a curse on my engine he closed one of my car doors and immediately remarked how much more solid it sounded. All it took was some strips on the outer skin, a few on inside panel and a bit more on inner striker panel to make a HUGE difference in how solid it sounded.
 
Horseplay said:
When {.} came by a long time ago to lay a curse on my engine he closed one of my car doors and immediately remarked how much more solid it sounded. All it took was some strips on the outer skin, a few on inside panel and a bit more on inner striker panel to make a HUGE difference in how solid it sounded.
Click to expand...

I just bought some dynamat to put on the doors. Tired of that tinny sound.
 
I added sounds deadening in my vert. Mostly to dull the electric fuel pump noise. It did make a nice difference even though it's always top down. It helps with the rattles and exhaust noise too.

Keep in mind you don't have to cover every square inch to make it effective. Especially in the doors. I did my trunk and back seat first. Then used the left over strips for the doors and rear wheel wells.



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As an alternative to Dynamat, take a look at Sound Deadener Showdown products as an alternative. I am impressed with the engineering that goes into their products.
 
I'm using Noico .080" butyl on my 66 fastback .
Not yet finished , but very nice product.
I totally stripped the floors and put on 2 coats
of POR15 . This was way more time consuming than
I planned , but I'll be glad when it's done . Now to
finish sealing the coup!e of cowl holes and then the
bucket of water test before installing the interior.IMG_20180707_164958.jpg IMG_20180704_133056.jpg
 
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