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Insulation and Sound Deadening

Discussion in 'General Mustang Discussion' started by JonnybravoM3, Aug 20, 2018.

  1. JonnybravoM3

    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?



    Sent from my HTC U11 using Tapatalk
  2. Horseplay

    Horseplay I Don't Care. Do you?

    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.
  3. JonnybravoM3

    JonnybravoM3 Member

    Thanks a bunch. So you would say go for it, with your eyes closed?

    Sent from my HTC U11 using Tapatalk

    KBMWRS What did the moron say today?

    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

    I should have done my doors too.
  5. kb3

    kb3 Well-Known Member

    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.
  6. Horseplay

    Horseplay I Don't Care. Do you?

    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.
  7. msell66

    msell66 Burning Fossil Fuels at c2 Donator

    I can’t believe I agree with the Chicago Slug.

  8. msell66

    msell66 Burning Fossil Fuels at c2 Donator

    I just bought some dynamat to put on the doors. Tired of that tinny sound.
  9. RapidRabbit

    RapidRabbit Well-Known Member

    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.

    Sent from my moto x4 using Tapatalk
    JonnybravoM3 likes this.
  10. JeffTepper

    JeffTepper Well-Known Member

    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.
    JonnybravoM3 likes this.
  11. c6fastback

    c6fastback Member

    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
  12. KBMWRS

    KBMWRS What did the moron say today?

    Do tell.....or use a garden hose and fill the interior....if nothing comes out the bottom...well....:eek::eek::rolleyes::D:p
  13. JonnybravoM3

    JonnybravoM3 Member

    Here we go... IMG-20180827-WA0012.jpeg

    Sent from my HTC U11 using Tapatalk
    Grabber70Mach and msell66 like this.
  14. c6fastback

    c6fastback Member

    Funny . Should have said bucket of water in the cowl . For you newbies , do a search before asking ....

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