Reuse the engine compartment black noise insulating pads or are there better options? |
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Reuse the engine compartment black noise insulating pads or are there better options? |
Tdskip |
Jan 31 2018, 03:50 PM
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#1
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Take a newbie to school here if you would, I've got it set of pads that are in decent condition but I'm not sure if there are better options available...
Thanks! |
Mikey914 |
Jan 31 2018, 04:01 PM
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#2
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The rubber man Group: Members Posts: 12,668 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Just finishing up a run of these -
Attached thumbnail(s) |
Larmo63 |
Jan 31 2018, 04:07 PM
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#3
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
Most people take that out of the car. I did, but I like the sound of a 911 engine.
I'm weird like that. (IMG:style_emoticons/default/driving-girl.gif) |
Steve |
Jan 31 2018, 04:19 PM
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#4
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914 Guru Group: Members Posts: 5,585 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
There also known to trap water and cause rust issues. I would not glue it, so you can remove it and clean it occasionally.
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rgolia |
Jan 31 2018, 04:49 PM
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#5
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GeoJoe Group: Members Posts: 704 Joined: 5-February 10 From: PA Member No.: 11,329 Region Association: North East States |
Mark - When are those going to be available?
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dr914@autoatlanta.com |
Jan 31 2018, 05:01 PM
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#6
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914 Guru Group: Members Posts: 7,858 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
we like the sound deadening pads, they make a huge difference. The original ones deteriorated and held water so many a back wall was rusted by now. Years ago we are up with a solution, water proof dynamat die cut for a perfect fit and perfect look. It easily glues on to the back wall, and you can still use the clips, has superior sound insulation and, again, it totally waterproof!!!!!!!!
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burton73 |
Jan 31 2018, 05:40 PM
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#7
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burton73 Group: Members Posts: 3,524 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
George,
Does it have a stickem back as my v8 car does not have clips? Bob B |
scallyk9 |
Jan 31 2018, 05:42 PM
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#8
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Member Group: Members Posts: 321 Joined: 16-October 16 From: Port Orchard, WA, USA Member No.: 20,499 Region Association: Pacific Northwest |
On my 3.2L conversion, the sound deadening is on the interior side of the bulkhead because of the Dzus fastened access door for the fan.
My LE has one more like the one shown in post #2 that won't hold water. |
Tdskip |
Jan 31 2018, 06:53 PM
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#9
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Thanks for the discussion and education.
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IronHillRestorations |
Jan 31 2018, 09:41 PM
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#10
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I. I. R. C. Group: Members Posts: 6,719 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None |
Get the one from Mikey!
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Mikey914 |
Jan 31 2018, 09:47 PM
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#11
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The rubber man Group: Members Posts: 12,668 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
We are using a felt like factory. It’s then treated to repel water and we bond a rubber backing to it to look like OEM. We have also backed the exposed side to make easier to glue (and use less). I had been waiting to try Velcro 1st.
I’ve had 3 people that have dropped by the shop and literally bought these before we listed them. We will do a group buy at $105 each. I’ll do up an official GB post. Mark |
Krieger |
Jan 31 2018, 10:19 PM
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#12
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Advanced Member Group: Members Posts: 4,711 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None |
I found another used oem "sound pad". The one that is on the inside of cabin. It is pefecly shaped for all the curbes. I trimmed it to fit the engine compartment side and used 3M spray adhesive to hold it.
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bbrock |
Jan 31 2018, 10:57 PM
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#13
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
My pad is surprisingly in good shape considering all the rust that was on the rest of the car. I was thinking about spraying the uncoated side with flex seal and reinstalling it. Haven't gotten any farther than the idea though.
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Larmo63 |
Jan 31 2018, 11:38 PM
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#14
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
Even waterproof, water can still get trapped behind them.
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Mikey914 |
Feb 1 2018, 12:15 AM
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#15
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The rubber man Group: Members Posts: 12,668 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Very true. Velcro or another method would be best. As for the interior pad behind the back pad. Most are in pretty good shape, but they are really heavy. I will get teh weight posted up on these in the morning.
Really the best way to dry out is to remove. If it's easily done, then you can inspect for rust and reinstall as required. |
bbrock |
Feb 1 2018, 08:38 AM
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#16
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
It seems the common place for upper firewall rust is the lower outside corners. Even my old rust bucket had a pristine firewall under the sound mat except those corners. If you think about it, that's the area where water absorbed by the felt would migrate and stay wet the longest. It seems waterproofing the back of those pads would be a great first step. I like the Velcro idea because if you orient the strips vertically, you would also be creating an air gap to keep moisture from getting trapped. The alternative would be to glue and seam seal around the edges but then you wouldn't be able to periodically inspect.
Deleting the sound mat is not an option for me. Even if my car was electric, I'd still be looking for ways to make it quieter. |
Mikey914 |
Feb 1 2018, 12:59 PM
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#17
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The rubber man Group: Members Posts: 12,668 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Yes. lowest point is the issue with most cars. My car didn't come with one, but I will add, using velcro co I can easily remove should I choose so.
Mark |
Larmo63 |
Feb 1 2018, 01:10 PM
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#18
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
My latest car came to me with solid hell holes and and worn out battery tray. We welded in new battery tray parts. The firewall behind the driver's seat had wormholes, so we removed that section and stitched in a new piece from another firewall. I've seen rust issues there enough to know that I'm skeptical of putting something back in there again.
I usually drive alone (I'm an asshole (IMG:style_emoticons/default/beer.gif)) in my car, so a radio isn't in it and/or conversation doesn't occur very often. I do wonder at times what this car might be like a little quieter inside. I guess I'm just used to that singing /6 now? |
gothspeed |
Feb 1 2018, 01:49 PM
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#19
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Senior Member Group: Members Posts: 1,539 Joined: 3-February 09 From: SoCal Member No.: 10,019 Region Association: None |
we like the sound deadening pads, they make a huge difference. The original ones deteriorated and held water so many a back wall was rusted by now. Years ago we are up with a solution, water proof dynamat die cut for a perfect fit and perfect look. It easily glues on to the back wall, and you can still use the clips, has superior sound insulation and, again, it totally waterproof!!!!!!!! Even waterproof, water can still get trapped behind them. (IMG:style_emoticons/default/agree.gif) even with water repellant on the pad, it would just 'repel' the water onto the firewall. Now if we could find water repellant paint for the firewall and hell holes? (IMG:style_emoticons/default/idea.gif) But as you mentioned with a -6, I would not want to insulate either! (IMG:style_emoticons/default/sunglasses.gif) |
Mikey914 |
Feb 1 2018, 01:57 PM
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#20
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The rubber man Group: Members Posts: 12,668 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Mine are die cut.
As far as water absorption goes - The idea is it will not hold water against the metal if it's not absorbed. The real issue becomes drainage and how much water is in the engine bay and why. With a 6 it's pretty obvious, but remember The problem is more a matter of continued exposure. I do make both rain trays. (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/biggrin.gif) |
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