Dynamat - What's your experience?, Worth the cost and effort? |
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Dynamat - What's your experience?, Worth the cost and effort? |
jack20 |
Feb 7 2015, 12:02 AM
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#1
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Member Group: Members Posts: 406 Joined: 7-November 14 From: Granite Bay, CA Member No.: 18,099 Region Association: Northern California |
Hello,
Has anyone used Dynamat on the inside firewall below the black base layer pad? If so, did it make a noticeable difference in noise reduction? Any suggestions for most effective use of this product? Thanks, Jack |
914runnow |
Feb 7 2015, 12:08 AM
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#2
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Member Group: Members Posts: 340 Joined: 19-April 04 From: Modesto California Member No.: 1,948 Region Association: None |
Hello, Has anyone used Dynamat on the inside firewall below the black base layer pad? If so, did it make a noticeable difference in noise reduction? Any suggestions for most effective use of this product? Thanks, Jack hi there..you mighttah pushed the wrong forum button.. try the garage..tons of answers there.. |
jack20 |
Feb 7 2015, 12:28 AM
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#3
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Member Group: Members Posts: 406 Joined: 7-November 14 From: Granite Bay, CA Member No.: 18,099 Region Association: Northern California |
Hello, Has anyone used Dynamat on the inside firewall below the black base layer pad? If so, did it make a noticeable difference in noise reduction? Any suggestions for most effective use of this product? Thanks, Jack hi there..you mighttah pushed the wrong forum button.. try the garage..tons of answers there.. Rookie mistake. Thank you! |
boxstr |
Feb 7 2015, 11:52 AM
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#4
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MEMBER:PACIFIC NORTHWEST REGION Group: Members Posts: 7,522 Joined: 25-December 02 From: OREGON Member No.: 12 Region Association: Pacific Northwest |
Amazing difference. I used a product called fat mat, which I beleive was purchased by Dynamat. It sold for considerably less and was the same stuff.
You might want to consider using it in the doors and floors. Even a piece in the targa roof panel will help. There are many other products just like Dynamat out there. Prices can be all over the place. Good luck. Craig at CAMP |
Bossman |
Feb 7 2015, 12:04 PM
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#5
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Member Group: Members Posts: 67 Joined: 6-October 14 From: Red Bluff CA Member No.: 17,985 Region Association: Northern California |
I have used this product on many projects. Makes a big difference. I would also put some in both trunks and under both trunk lids. Takes out the resonating tones. You will actually hear your engine with out all the static "buzzing".
The down side of course is weight, but if you are concerned about acoustics you are obviously not building a racer. You could take it a step further with a layer of of closed cell foam over the dynamat topped with a layer of mass load vinyl (MVL), but with the thin glass and frameless windows you probably wouldn't notice this extra effort Sometimes you can find a shop selling a package of scrap pices pretty cheap on eBay that you can fit together |
boxstr |
Feb 7 2015, 10:32 PM
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#6
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MEMBER:PACIFIC NORTHWEST REGION Group: Members Posts: 7,522 Joined: 25-December 02 From: OREGON Member No.: 12 Region Association: Pacific Northwest |
Amazing difference. I used a product called fat mat, which I beleive was purchased by Dynamat. It sold for considerably less and was the same stuff.
You might want to consider using it in the doors and floors. Even a piece in the targa roof panel will help. There are many other products just like Dynamat out there. Prices can be all over the place. Good luck. Craig at CAMP |
pete000 |
Feb 7 2015, 10:35 PM
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#7
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Senior Member Group: Members Posts: 1,885 Joined: 23-August 10 From: Bradenton Florida Member No.: 12,094 Region Association: South East States |
Good stuff, many cheaper alternatives out there. The good is is makes the car quiet and solid feeling, the bad it is not so light and a bit pricey.
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914forme |
Feb 8 2015, 08:05 AM
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#8
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Times a wastin', get wrenchin'! Group: Members Posts: 3,896 Joined: 24-July 04 From: Dayton, Ohio Member No.: 2,388 Region Association: None |
copied this post from another site. you can also get this in big rolls at comercial roofing supliers.
"Peel & Seal is the cheap alternative to Dynamat. This is the stuff you get from Lowes Hardware. It is the same as the original Dynamat but a lot cheaper. It's very, very close to Dynamat other than the price. It has a 40 mil rubberized aspalt sticky back, two layers of high stregth polymer film over a reflective aluminum surface." The Peel & Seal comes in small rolls, but it works. You can find it in larger rolls from a roofing supplier. You can also look for a product called Alumaguard We use this stuff on outdoor chillers at work. Tough as nails, and will deaden sound. Oh and its cost is about a $1 a square foot wholesale. And this is a little more but I have used it before! |
VaccaRabite |
Feb 8 2015, 09:38 AM
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#9
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En Garde! Group: Admin Posts: 13,443 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I used Fatmat on my car. 2 layers on the firewall.
The sound of carbs creaming at 4K+ RMP cuts right through the rear window, but a lot o road noise is cut down. Zach |
a914622 |
Feb 8 2015, 11:04 AM
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#10
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Member Group: Members Posts: 316 Joined: 12-August 10 From: northwest Member No.: 12,048 Region Association: Pacific Northwest |
I have use a similar product on both the vanagon and the toyota. Good for removing vibration noise.
Stay away from the roofing material. On a hot day your rig will smell like a freshly tared roof. Mc Carr has sheets that are cheaper than the stereo shops. Jcl |
larryM |
Feb 8 2015, 01:20 PM
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#11
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emoze Group: Members Posts: 891 Joined: 1-January 03 From: mid- California Member No.: 65 Region Association: Northern California |
X2 - and see this - 914 firewall sound deadening
a stock firewall pad weighs 35 lbs - & assists in rusting I have use a similar product on both the vanagon and the toyota. Good for removing vibration noise. Stay away from the roofing material. On a hot day your rig will smell like a freshly tared roof. Jcl - I use similar DEI product on my 914-6 & several other cars - shop Summit Racing for it |
mepstein |
Feb 8 2015, 01:52 PM
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#12
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914-6 GT in waiting Group: Members Posts: 19,271 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
The stock firewall pad (interior) on my '75 weighed 9lbs
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malcolm2 |
Feb 8 2015, 02:16 PM
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#13
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
I used B-Quiet Ultimate behind the seat, and all over the floor. Folks also stick a square on the inner door. Some people do the same on the inner lid of the trunks. It absorbs vibration and reduces the noise. It works.
In my case it was not much work. I already had the car stripped and the original tar removed. |
ellisor3 |
Feb 8 2015, 04:10 PM
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#14
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HPWhore Group: Members Posts: 811 Joined: 23-October 08 From: Fleming Island, Florida Member No.: 9,683 Region Association: South East States |
Dynamat is a butyl based product where peel and seal is asphalt based. The asphalt will not work well on vertices surfaces as when it heats up the adhesive is likely to fail. Also asphalt may ooze when it gets hot. Not good. But may work ok on flat horizontal surfaces like floors.
Other options are Lizard skin or B Quiet and EZ Cool. |
wes |
Feb 8 2015, 08:25 PM
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#15
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
I used Dynamat on the interior doors, floors, and inside firewall and yes $$, lbs but I like it.
Now I see AA has a Dynamata engine compartment firewall insulation pad that clams to look like the OEM pad and Im wondering if any one has tried it? |
larryM |
Feb 8 2015, 09:01 PM
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#16
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emoze Group: Members Posts: 891 Joined: 1-January 03 From: mid- California Member No.: 65 Region Association: Northern California |
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bigkensteele |
Feb 8 2015, 09:30 PM
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#17
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Major Member Group: Members Posts: 2,197 Joined: 30-August 04 From: Cincinnati, OH Member No.: 2,660 Region Association: South East States |
The stock firewall pad (interior) on my '75 weighed 9lbs good for you! - mine weighs 35 lb - still in bag in storage if anyone wants it for free - local pickup or pay the shipping cost on actual weight . I think that the interior pad is probably around 10#. The engine compartment pad is MUCH heavier, so between the two of those and the tar that is scraped off the floor, adding Dynamat or an equivalent will probably still be lighter. |
tomeric914 |
Feb 8 2015, 09:49 PM
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#18
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One Lap of America in a 914! Group: Members Posts: 1,259 Joined: 25-May 08 From: Syracuse, NY Member No.: 9,101 Region Association: North East States |
I've use Dynamat in the past but switched to Second Skin Damplifier and Damplifier Pro and had much better results. As Vacca Rabbit has stated, the back glass is where a lot of the sound comes through but this will help.
http://store.secondskinaudio.com/damplifier-pro/ I also like their Spectrum noise control coating for the floor if the tar boards have been removed. Goes from tinny to thud in one coating. |
carr914 |
Feb 9 2015, 06:12 AM
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#19
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Racer from Birth Group: Members Posts: 118,603 Joined: 2-February 04 From: Tampa,FL Member No.: 1,623 Region Association: South East States |
I've used Fat Mat, DynaMat & DynaMat Lite. I like the Lite best - it's easier to use.
Dont Ever Use the Aspalt Roofing Products - I have seen the Asphalt melt and the Smell - damn! |
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