 How important is this?, Firewall sound deadener |
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Model Specific Information
914/4: 70 71 72 73 74 75 76 914/6: 70 71 72
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| Speedo |
 May 26 2025, 03:42 PM
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#1
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Senior Member  Group: Members Posts: 559 Joined: 7-November 06 From: Boulder Member No.: 7,170 Region Association: Rocky Mountains 
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Finishing up my interior and wondered how important the sound deadener is? Its pretty heavy. Do people use it, lose it or replace with a more modern lighter sound barrier.
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| mepstein |
May 26 2025, 05:22 PM
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#2
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914-6 GT in waiting Group: Members Posts: 20,281 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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They do all of the above. You can always try it without it and go from there. The seats and back pad remove in 10 minutes.
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| Speedo |
May 27 2025, 08:24 AM
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#3
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Senior Member Group: Members Posts: 559 Joined: 7-November 06 From: Boulder Member No.: 7,170 Region Association: Rocky Mountains
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The interior is out. I'm about to recover the seats. Was thinking dynomat for the sound barrier.
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| Speedo |
May 28 2025, 07:02 PM
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#4
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Senior Member Group: Members Posts: 559 Joined: 7-November 06 From: Boulder Member No.: 7,170 Region Association: Rocky Mountains
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Anybody know the weight of the factory rubber barrier? This is an original six so if it is stupid to NOT replace the barrier, let me know.
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| gandalf_025 |
May 30 2025, 08:15 AM
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#5
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Senior Member Group: Members Posts: 1,507 Joined: 25-June 09 From: North Shore, Massachusetts Member No.: 10,509 Region Association: North East States |
Here you go…
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| sixaddict |
Jun 14 2025, 07:23 AM
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#6
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Senior Member Group: Members Posts: 1,007 Joined: 22-January 09 From: Panama City Beach, FL Member No.: 9,961 Region Association: South East States
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Since its original 6, to me it’s more logical to stay with it. Having said that, depends on your overall build philosophy. …..especially since it remains unseen. Just an opinion and many would say your car your choice. Hard to believe it will diminish value.
(IMG:style_emoticons/default/beerchug.gif) |
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| Cairo94507 |
Jun 15 2025, 03:48 PM
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#7
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Michael Group: Members Posts: 10,511 Joined: 1-November 08 From: Auburn, CA Member No.: 9,712 Region Association: Northern California
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I used Dynomat on my interior firewall. If I had a stock 6 interior pad in good condition, I would probably have added it too.
Took my wife for a ride the other day and she remarked how much quieter my car was with the 3.6. The next time the interior comes out I am going to add some additional sound deadening to the interior firewall. Why not? I am not racing the car and really do not care if it is 15 pounds heavier. (IMG:style_emoticons/default/beerchug.gif) |
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