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Author
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Topic: How much sound deadening?
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MrWesson22
Gearhead Posts: 1286
From: Dacula, GA
Registered: Sep 2000
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posted 04-11-2003 01:33 AM
   
I know Grandes got extra sound deadening. But how much total weight's worth did they actually get? I'm trying to decide if it's worth the effort of pulling it all out or not.
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Neal 69 Gulfstream Aqua Grande
351C/4sp
https://mustangsandmore.com/ubb/MrWesson22.html
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The Iceman
Gearhead Posts: 2122
From: Shelton, CT
Registered: Jul 2000
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posted 04-11-2003 02:43 AM
who cares how much is in there - pull it out anyways! (as I said somewhere else   )a Classic just isnt as "classic" without the loudness in my book ------------------
CrAzY Dan~
1965 Coupe "BeeBop"
200ci Straight Six, T-5, Cliffy 6-2 header, and some other goodies :)https://mustangsandmore.com//ubb/TheIceman.html July of 2000 pics
http://kingroyale.50megs.com/] Newest Pics!
1988 Notchback ~~ 2.3 w/AOD...upgrades coming soon!
There's Nothing Wrong With A Little Six In A Classic Mustang! ;)
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Fastback68
Gearhead Posts: 3721
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-11-2003 03:35 AM
I've heard the figure 50 lbs, but I don't know if that was serious or not.
During my recently finished total restoration, I added about 15 pounds of rubber matting that wasn't originally there, and I couldn't have added much more.
For what it's worth, I totally disagree with Iceman. I want to hear the noise when I open the windows, but when I want some peace and quiet, I'll have that option too.
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MrWesson22
Gearhead Posts: 1286
From: Dacula, GA
Registered: Sep 2000
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posted 04-11-2003 04:12 AM
Well, if there was any chance of it ever being quiet, it would be different. But dual 3" and turndowns just throws that right out the window.
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Neal 69 Gulfstream Aqua Grande
351C/4sp
https://mustangsandmore.com/ubb/MrWesson22.html
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cobravenom71
Gearhead Posts: 1042
From: Poinciana, Fl USA
Registered: Aug 2002
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posted 04-11-2003 08:44 AM
The Grande's all came with an extra 55 pounds of sound-deadner, and it made a big difference.
I also agree that it is nice to have a nice quiet car when you want one.
My 71 429 Mach is a fairly loud car. Flowmasters and 3-inch pipes make some noise, but it is still very quiet on the inside.
When I redid the interior, I put a good amount of the spray-in seam sealer in first, then I put in the best sound deadner underlayment availible, a little better than used in the Grandes. I also put a lot of 'insulation bags' in the inner panels to help some more. I got the idea from my 79 Lincoln. When I took the interior out for refurbishing, I found all the interior panels literally STUFFED with plastic bags filled with fiberglas insulation material. The bags are all seales so moisture and water won't get inside. So I made a bunh of these myself for the Mustang. I FILLED every nook and cranny thet I could find, and I covered the back of all the trim panels and door panels with foil-faced 'bubble' insulation.
This all made a HUGE difference in the driveability of this car. It is much quieter than I ever thought it could be.
There may be an additional 60 or 70 pounds of material in the car now, but I don't race it so it is of little concern to me. If you want a better driving, more comfortable car I highly recommend it! ------------------
1971 'J' code 429 Mach 1
1976 'Starsky & Hutch' Torino (460)
1973 Grande
1973 Mach
1973 Convertible
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Fastback68
Gearhead Posts: 3721
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-11-2003 09:04 AM
quote:
The bags are all seales so moisture and water won't get inside. So I made a bunh of these myself for the Mustang.
Brilliant! I haven't put my interior panels back yet. This one I'm gonna try.
Tell me, how seriously did you do this? Heavy-duty plastic? Heat-sealed? Or just ordinary plastic bags stapled shut?
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cobravenom71
Gearhead Posts: 1042
From: Poinciana, Fl USA
Registered: Aug 2002
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posted 04-11-2003 11:20 AM
I used the smallest, toughest garbage bags I could find, and a few large zip-lock bags. I sealed them with clear packing tape covered with duct-tape.
I used the highest 'R'-value paper faced insulation for the 'stuffing', and I stuffed them pretty full. Then I stuffed as many as I could fit in the panels. In fact a lot more than what was in the Lincoln.
You will be absolutely amazed at the difference this makes when you drive.
Good Luck, and let me know how it works out. Kit. ------------------
1971 'J' code 429 Mach 1
1976 'Starsky & Hutch' Torino (460)
1973 Grande
1973 Mach
1973 Convertible
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 04-11-2003 02:17 PM
Yep, as said above grandes came with 55 pounds of sound deadening materials. I also read that some Mach 1's got the same treatment, maybe all but I'm not totally sure on that one. All I know is that my car is alot quieter inside than in any other vintage mustang I have been in.------------------
1970 Grande
H code 351W FMX
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