Replacing sound deadening and staying legal. - Subaru Enthusiasts Car Club of the Sierras

Libila · 2009-10-10, 06:21 PM

Months ago I began an interior swap (tan for grey) and when I pulled the carpet I found that the original sound deadening had completely lifted and was broken in to chunks, so I just tossed it. Now that I'm modding toward SP to save money and my sanity I realize the sound deadening has to be replaced. What advice can you, the experienced auto-crossers, give me so I can become legal?

One slight detail I left out, I didn't weigh it but others have so I know about how much I need to put back in weight wise.

cody · 2009-10-10, 09:54 PM

I have a bunch of Dynamat Extreme in my front doors...but my front speakers rattle when it's cold. Yah, I'm no help.

Kevin M · 2009-10-11, 04:51 PM

I would just get some 3/8" carpet padding and cut some sheets to replace the parts you tossed out. On the other hand, you're talking about 3 ounces of sound deadening that's beneath your carpet.

Even the most jaded and cynical national level autocrosser isn't go to go digging for that sort of thing,

Libila · 2009-10-11, 06:17 PM

I'm talking about the tar stuff that usually requires dried ice and a hammer to remove...

Kevin M · 2009-10-11, 07:03 PM

Oh. In that case, just get a can of the sound deadening/undercoating from NAPA or Kragen or whatever got to town. The non-spray stuff I mean.

cody · 2009-10-11, 08:04 PM

Wear clothing.

Libila · 2009-10-12, 08:33 AM

Cody, thanks for your advice. It's insightful to the extent of altering my worldview.

Kevin, I was thinking the same thing but I'm always unsure about the level of scrutiny when it comes to modifications and autox rules.

A1337STI · 2009-10-13, 07:42 AM

damn.. all the work i put into removing that crap from my rally car (still a lil bit left) and yours just falls out?

life is funny

2009-10-10, 06:21 PM	#1
Libila EJ205 Real Name: Tim Join Date: Jun 2004 Location: Reno, NV Posts: 1,384 Car: '94 L	Replacing sound deadening and staying legal. Months ago I began an interior swap (tan for grey) and when I pulled the carpet I found that the original sound deadening had completely lifted and was broken in to chunks, so I just tossed it. Now that I'm modding toward SP to save money and my sanity I realize the sound deadening has to be replaced. What advice can you, the experienced auto-crossers, give me so I can become legal? One slight detail I left out, I didn't weigh it but others have so I know about how much I need to put back in weight wise.

2009-10-10, 09:54 PM	#2
cody Candy Mountain Real Name: Cody Join Date: May 2005 Location: Californication Posts: 7,751 Car: 03 Pussy Wagon, now with more pink! Class: TESP OMG Internet!	I have a bunch of Dynamat Extreme in my front doors...but my front speakers rattle when it's cold. Yah, I'm no help. __________________ Slow and low, that is the tempo.

2009-10-11, 04:51 PM	#3
Kevin M EJ22T Join Date: Sep 2003 Location: Reno Posts: 9,445 Car: '93/'01 GF6, mostly red Class: 19 FP	I would just get some 3/8" carpet padding and cut some sheets to replace the parts you tossed out. On the other hand, you're talking about 3 ounces of sound deadening that's beneath your carpet. Even the most jaded and cynical national level autocrosser isn't go to go digging for that sort of thing, __________________ FWD is the new AWD

2009-10-11, 07:03 PM	#5
Kevin M EJ22T Join Date: Sep 2003 Location: Reno Posts: 9,445 Car: '93/'01 GF6, mostly red Class: 19 FP	Oh. In that case, just get a can of the sound deadening/undercoating from NAPA or Kragen or whatever got to town. The non-spray stuff I mean. __________________ FWD is the new AWD

2009-10-11, 08:04 PM	#6
cody Candy Mountain Real Name: Cody Join Date: May 2005 Location: Californication Posts: 7,751 Car: 03 Pussy Wagon, now with more pink! Class: TESP OMG Internet!	Wear clothing. __________________ Slow and low, that is the tempo.

2009-10-11, 06:17 PM	#4
Libila EJ205 Real Name: Tim Join Date: Jun 2004 Location: Reno, NV Posts: 1,384 Car: '94 L	I'm talking about the tar stuff that usually requires dried ice and a hammer to remove...

2009-10-12, 08:33 AM	#7
Libila EJ205 Real Name: Tim Join Date: Jun 2004 Location: Reno, NV Posts: 1,384 Car: '94 L	Cody, thanks for your advice. It's insightful to the extent of altering my worldview. Kevin, I was thinking the same thing but I'm always unsure about the level of scrutiny when it comes to modifications and autox rules.

2009-10-13, 07:42 AM	#8
A1337STI EJ205 Join Date: Jan 2006 Location: Reno, NV Posts: 1,840 Car: Impreza and an Impreza Class: AS / CRS PerfStock "pedal on the right"	damn.. all the work i put into removing that crap from my rally car (still a lil bit left) and yours just falls out? life is funny __________________ Fighting uphill battles, one bullet at a time!