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JawjaPorsche |
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#1
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,463 Joined: 23-July 11 From: Clayton, Georgia Member No.: 13,351 Region Association: South East States ![]() |
I am having my back pad recovered this winter. While it is out, I am considering soundproofing the firewall.
One of my friends used Dynamat on his 67 GTO's floorboard when he restored it and swears by it. Does anyone have thoughts or am I wasting my time and money? http://www.amazon.com/Dynamat-10435-Xtreme...f=pd_sim_auto_3 |
SLITS |
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#2
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"This Utah shit is HARSH!" ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None ![]() ![]() |
I went to Home Depot and bought their brand of gooey tar, silver backed stuff. Put it on the backside of my back pad. About $14.00 per roll (6" X 25').
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dflesburg |
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#3
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,722 Joined: 6-April 04 From: Warm and Cheerful Centerville Ohio Member No.: 1,896 Region Association: None ![]() |
We use it.
You can save some money and get fatmat. We have DynoMat in one car and FatMat in the other and we cant tell any difference... |
Phoenix-MN |
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#4
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Senior Member ![]() ![]() ![]() Group: Members Posts: 927 Joined: 23-January 04 From: ST. Bonifacius,MN Member No.: 1,590 ![]() |
I used Dynamat through-out the interior. With the uphosltry installed driving down the road is very quiet.
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effutuo101 |
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#5
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,735 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California ![]() |
Getting ready to spray my lizardskin soon. Both the sound and heat types. Have a look online. Jegs has it in 2 gal for pretty cheap.
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DRPHIL914 |
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#6
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Dr. Phil ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,820 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States ![]() ![]() |
Is that just used on the inside? What is the best thing to use on the engine compartment side, rather than the old original thaw falling off?
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infraredcalvin |
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#7
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Distracted Member ![]() ![]() ![]() Group: Members Posts: 1,623 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California ![]() ![]() |
I used dynamic on my doors hoping to help my anemic stereo system, it helped a little, but for the $$$ I should have built a bass box in the console. Probably would have helped more to do the floors and firewall as well...
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saigon71 |
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#8
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,011 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region ![]() ![]() ![]() |
Is that just used on the inside? What is the best thing to use on the engine compartment side, rather than the old original thaw falling off? Following this thread closely, as I intend to replace my factory piece on the engine side as well. I saw this on ebay: http://www.ebay.com/itm/Porsche-Ultimate-E...=item43abd1ebc1 |
Eric_Shea |
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#9
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PMB Performance ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 19,301 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains ![]() ![]() |
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Tom_T |
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#10
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TMI.... ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 8,321 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California ![]() ![]() |
Not sure if your avatar pic is Soccer, Rugby or Aussie Footie - but funny as hell Eric! (IMG:style_emoticons/default/biggrin.gif) ... it gives POA a who new meaning! (IMG:style_emoticons/default/lol-2.gif) Hijack - or side-track over! |
Mark Henry |
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#11
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that's what I do! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada ![]() |
I used brown bread on my VW bus, I think it was $60 for a 100' roll
works good, but it's no good inside the engine bay. |
jaxdream |
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#12
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Senior Member ![]() ![]() ![]() Group: Members Posts: 974 Joined: 8-July 08 From: North Central Tennessee Member No.: 9,270 Region Association: South East States ![]() |
Not sure if your avatar pic is Soccer, Rugby or Aussie Footie - but funny as hell Eric! (IMG:style_emoticons/default/biggrin.gif) ... it gives POA a who new meaning! (IMG:style_emoticons/default/lol-2.gif) Hijack - or side-track over! Slits Got Fired !!!!! Eric now has new people ! Jack |
ellisor3 |
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#13
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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 ![]() ![]() |
I used Dynamat throughout the interior (page 13 in my signature link). I did not really compare with fatmat but I am very happy with the results. Not sure about the weight difference but Dynamat is heavy as hell. I have a 3.2 so weight doesn't mean as much as in a 2.0. It is very easy to install, the noise dampening is fantastic.
I put Dynamat on the back of the firewall on the inside. Because of the glass window, you are not going to get a lot of reduced engine noise no matter what you do. |
effutuo101 |
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#14
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,735 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California ![]() |
Lizard skin can be used in layers for inside and outside. Then you can paint it.
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bryanf |
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#15
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Member ![]() ![]() Group: Members Posts: 105 Joined: 18-January 06 From: Half Moon Bay, CA Member No.: 5,435 ![]() |
Dynamat is best at damping out resonating panels and not really blocking sound (although it will do some of that). The best thing to use to block sound is Mass Loaded Vinyl (MLV), preferably one that is foam backed (you put the foam side towards the firewall so the MLV is 'floating' and doesn't resonate with the firewall). Many people recommend a combination of dynamat (or any of the cheaper knock-offs) covering a 1/4 of the area of the firewall (or any other panel) to kill resonance with a closed-cell foam MLV to block noise. The other trick with the MLV is to make sure you completely cover the firewall...any gaps really let the sound in.
I haven't done this to my 914, but I followed this strategy for my Elise and it made a huge difference...the car is actually pleasant to commute in. |
JawjaPorsche |
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#16
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,463 Joined: 23-July 11 From: Clayton, Georgia Member No.: 13,351 Region Association: South East States ![]() |
I appreciate everyone's input on this topic. There is a wealth of knowledge out there in 914World! Thank you so much and have a wonderful Christmas.
Terry |
stugray |
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#17
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None ![]() |
For >15 years, I have been hauling around a roll of sticky back, architectural , acoustic rubber (i think neoprene), So...
I just did this: Layout (IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1324008992.1.jpg) Rolled on (IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1324008993.2.jpg) Trim alignment & drill (IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1324008993.3.jpg) carpet glued to rubber (IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1324008993.4.jpg) I havent had an engine behind it running yet, but well see. Stu |
carr914 |
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#18
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Racer from Birth ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 124,653 Joined: 2-February 04 From: Tampa,FL Member No.: 1,623 Region Association: South East States ![]() ![]() |
Zach & I have used RamMat. It now comes in square sheets instead of a roll. They also sell an acoustic foam. I used both.
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