Re: Sound Deadener
[Re: mopowers]
#2050427
04/09/16 03:04 PM
04/09/16 03:04 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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You wanna do the whole floor + firewall. Dynamat is too pricey & I wonder if that is because of the self adhesive convenience. there's gotta be some thing just as good for less money out there & glueing it yourself ain't no big deal. EDIT And do the doors too
Last edited by RapidRobert; 04/09/16 03:12 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Sound Deadener
[Re: RapidRobert]
#2050502
04/09/16 05:26 PM
04/09/16 05:26 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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There is a great deal of misunderstanding about the sound deadening process and which products to use. Dynamat Extreme is expensive, because it is one of the best. You can find it at Amazon in Bulk Packs for about 1/2 off retail with free shipping. That makes it one of the most desirable products out there.
The job of these self-adhering butyl pads is to dampen panel resonation and to a lesser degree block noise and heat. The do the first part of the job very well, and you don't need to cover an entire panel to effectively dampen the resonation inherent to it.
If used to completely cover the floor, ceilings and doors of a car you will get a moderately good heat and sound barrier along with a high degree of panel resonance dampening.
The secret to doing an even more effective job at blocking heat, fumes and sound is after you put your Dynamat or other product down, is to completely cover the floors, doors, and ceiling with a product like "The Insulator" from Aircraft Spruce or a similar product from Speedway Motors. Cut out all the various shapes that are needed to fit a complete blanket of this stuff inside the entire interior of your car and tape up the seams with that aluminum ducting tape with the wax paper peel-off backing. You may have to use some contact adhesive to keep the stuff up on the roof until you reinstall your headliner.
Once you have used both products and reinstalled your interior, your car will be quieter than any new high end car save a Rolls Royce or Bentley.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Sound Deadener
[Re: jbc426]
#2050572
04/09/16 07:27 PM
04/09/16 07:27 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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As Paul Harvey would say "now you know the rest of the story"
live every 24 hour block of time like it's your last day on earth
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Re: Sound Deadener
[Re: mopowers]
#2050649
04/09/16 10:22 PM
04/09/16 10:22 PM
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Joined: Aug 2005
Posts: 4,861 Riverside, Ca
R70RUNNER
master
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master
Joined: Aug 2005
Posts: 4,861
Riverside, Ca
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I just did the rear seat area, the muffler wells and up the rear axle wall to the x brace. I was interested in dreading the exhaust and amplification effect the area has. It wasn't that expensive, I used a quality jute carpeting and left the firewall alone completely. Wanted quieter drive, but it's a muscle and wanted a muscle car experience ... If I wanted a Camary I'd bought one, it would've been cheaper
Edit: grammar
Last edited by R70RUNNER; 04/09/16 10:26 PM.
Current cars: 2000 Dak Quad Cab, 2012 Challenger,1970 Road Runner, 1994 Firehawk
1966 Coronet post sedan, 1988 Corvette, 2005 Magnum RT all SOLD
R70RUNNER<---VP Inland Empire Chapter of the MPM
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Re: Sound Deadener
[Re: Car Nut]
#2050860
04/10/16 07:10 AM
04/10/16 07:10 AM
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Joined: Apr 2003
Posts: 921 Long Island, NY
shocktrp
super stock
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super stock
Joined: Apr 2003
Posts: 921
Long Island, NY
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Check Home depot, they have the same stuff, different name, but cheaper. Duct insulation?
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Re: Sound Deadener
[Re: moparx]
#2051076
04/10/16 03:00 PM
04/10/16 03:00 PM
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Joined: Jan 2003
Posts: 1,307 BC, Canada
Black_Bee
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,307
BC, Canada
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I tried to sound and heat insulate my black '69 Super Bee. I had the entire interior (floor, doors, firewall, ceiling) coated with Lizard Skin spray on heat insulation. I put a layer of butyl rubber sound insulation from RaamAudio (similar to Dynamat) on the firewall, floors, ceiling, quarters, etc) I then put a layer of closed cell foam that is supposed to be a sound barrier over everything. I used carpet with the extra thick rubber backing. The doors close with a nice satisfying thud, none of the panels sound like an empty drum if you knock on them, and It is certainly quieter than it was previously. That said, the car has a 3" exhaust + 3.91 gears and you have to pretty much yell to have a conversation in the car on the highway @ 55-60MPH.
Paul '69 Super Bee 383 EFI Turbo
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Re: Sound Deadener
[Re: mopowers]
#2051088
04/10/16 03:24 PM
04/10/16 03:24 PM
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Joined: Jul 2007
Posts: 3,712 Sacramento, Ca
Darius
master
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master
Joined: Jul 2007
Posts: 3,712
Sacramento, Ca
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I use lizzard skin in every nook and cranny I could reach while the car was on a rotisserie. Under side of the roof , up in the wheel wells entire underside of the car too. Foamed all the pillars and everywhere else I could foam that there wasn't need for room for something. standard pad under the carpet. This car is VERY quiet. I run a 2 3/4 exhaust with Dynomax VT mufflers. SUPER quiet at cruise, and very nice when accelerating. I realize this is not practical when not involved in a full on restoration but I like posting this because the question comes up A LOT!!!!!! The lizzard skin seems expensive but it really is less than any other method for sure when you consider where you can spray it that you would never be able to apply any kind of peel and stick type product.
Driving modern convenience in classic beauty
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Re: Sound Deadener
[Re: BDW]
#2051880
04/11/16 02:58 PM
04/11/16 02:58 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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For the guys that used the Dynamat style, how many square yards does it take to do the trunk, floor pan and doors? I've put 5 Bulk Packs of Dynamat extream in a car with a high-end stereo. In my '70, I used 3 bulk packs.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Sound Deadener
[Re: jbc426]
#2052342
04/11/16 11:42 PM
04/11/16 11:42 PM
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Joined: Jan 2003
Posts: 7,545 Albany, NY
67SATisfaction
The member whose name is actually Art
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The member whose name is actually Art
Joined: Jan 2003
Posts: 7,545
Albany, NY
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For the guys that used the Dynamat style, how many square yards does it take to do the trunk, floor pan and doors? I've put 5 Bulk Packs of Dynamat extream in a car with a high-end stereo. In my '70, I used 3 bulk packs. For comparison - on our '65 Satellite I used 2 bulk packs from Amazon and I cut pieces to fit just the largest panel ares of the floor, firewall, doors, QP below the 1/4 windows and under the back seat - to reduce resonance. I had several sheets of material left over. I did not cover the trunk at all. The doors shut like a Mercedes. Cheers, - Art
Last edited by 67SATisfaction; 04/11/16 11:48 PM.
65 Satellite hardtop 361/4bbl console 727 2.76 67 Satellite convert 383/2bbl column 727 3.23 67 Lancia Fulvia Sport 1.3 Zagato. Alloy body, 1.3L V4 DOHC 4-spd 67 Lancia Fulvia Rallye 1.3. Alloy panel, 1.3L V4 DOHC 4-spd 71 Alfa Romeo GT Junior 1300 Zagato, 1.3L 4cyl DOHC hemi 5-spd 82 Alfa Romeo GTV6 2.5L SOHC hemi V6 5-spd transaxle 75 Maserati Bora US spec 4.9L DOHC hemi V8 5-spd ZF 77 Maserati Khamsin Euro spec 4.9L DOHC hemi V8 5-spd ZF 07 Aston Martin DB9 6.0L DOHC V12 6spd transaxle
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Re: Sound Deadener
[Re: mopowers]
#2053165
04/12/16 11:04 PM
04/12/16 11:04 PM
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Joined: Dec 2003
Posts: 10,938 Spokane Valley, WA
Big Bad Bee
I Live Here
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I Live Here
Joined: Dec 2003
Posts: 10,938
Spokane Valley, WA
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I got the good tip on the web and installed this last summer. it's at Lowe's home center and if you hit it right you can get it for $15 a roll. I think it took 5 rolls to do my 70 Superbee. Easy to work with, sticks like crazy and totally baffles the drum skin that is your floor don't listen to the critics that say it smells like tar. That's BS. I installed this stuff in 80-90° heat and it never smelled. I've read posts on other sites with guys setting their car out in 100°+ weather for hours with no odor. It's easy to work with. I used 1/4" overlap. Use a small wood or plastic roller to press it down. Sticks to itself great. It's ridiculous to spend hundreds of dollars on dynamat for the prestige of the label you'll never see.
I’m listening.
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Re: Sound Deadener
[Re: Big Bad Bee]
#2053218
04/12/16 11:37 PM
04/12/16 11:37 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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I got the good tip on the web and installed this last summer. it's at Lowe's home center and if you hit it right you can get it for $15 a roll. I think it took 5 rolls to do my 70 Superbee. Easy to work with, sticks like crazy and totally baffles the drum skin that is your floor don't listen to the critics that say it smells like tar. That's BS. I installed this stuff in 80-90° heat and it never smelled. I've read posts on other sites with guys setting their car out in 100°+ weather for hours with no odor. It's easy to work with. I used 1/4" overlap. Use a small wood or plastic roller to press it down. Sticks to itself great. It's ridiculous to spend hundreds of dollars on dynamat for the prestige of the label you'll never see. Great idea, Bee. I'm not married to blowing big wads of cash for name brand stuff if something cheaper works just as well. I have seen the tar/asphalt based stuff at the home improvement places though. Working in construction, I have developed a severe dislike of the smell of roofing tar !
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