Dynamatting the whole car.. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Skyline0586 · 02-21-2006, 04:04 PM

i just got 100sq ft of Dynamat sound deadening material which is about .3lbs per sq inch. Not sure if im gonna use all of it, but im basically covering the whole floor of the car as well as the headliner, trunk, license plate areas, and behind the rear fenders. Do u think its worth it for the extra weight? Reason I am doing this is because I plan to put a 12inch sub in there and hated the rattle in my Eclipse.

Shawn_of_the_Dead · 02-21-2006, 05:20 PM

I would put the sub in there and see IF and WHERE the rattling occurs. Why add it if you dont need to? I understand it also helps cancel out road noise, but weighs more than it is worth in my opinion.

aznpoopy · 02-21-2006, 06:22 PM

you're on the wrong forum when it comes to this kind of stuff... lol.

i guess it's worth it if you really care about the interior noise level. unless you are in to serious competitive racing, i don't see why you should worry about some extra pounds.

you're putting in a sub... if you were really worried about weight, you'd rip out the entire goddamn sound system instead of upgrading it. it's useless as far as performance goes.

94cc0rd · 02-21-2006, 08:32 PM

i have 2 12"s in my trunk and my license plate rattles soo frickin much.. i hate it! i'm embarassed to bump my system even though I love bass...

you should try sound deadening the trunk only first ... and see if theres still any rattles...

koukidough · 02-21-2006, 08:43 PM

use double sided tap for license plate, works everytime =)

TurDz · 02-21-2006, 09:15 PM

Yeah, or foam tape.

I have dynamatted an entire car before, it's worth it if you're looking for a quiet ride, and something ideal for SOUND QUALITY. If you're just doing it for your subwoofer, isolate where the problem is and just do that portion. No point in doing the whole car unless you're going for great sound staging and want every last detail to come out.

***S14DB*** · 02-21-2006, 09:37 PM

A lot of people go overboard with the Sound deadening. You need to cover the seams and holes with 0.5-1" trim over the edges. The flat panels only need a piece 1/4 the size of the panel in the center of the panel.

Then hit the bass and cover any rattles.

Most OEM sound deadening is worthless. Remove all the tar and replace the carpet underlayment with house carpet pad.

Suk02Si · 02-21-2006, 10:07 PM

+1 on the Foam tape. If all you're worried about is License plate rattle, foam tape is the ticket.

94cc0rd · 02-21-2006, 10:40 PM

i'm assuming it's available at any hardware store??

do you guys know of the most common or well known "rattles" on a s14?

all I hear right now is my license plate rattle, but i'm sure once that's eliminated, i'll hear more..

***S14DB*** · 02-21-2006, 10:53 PM

Quote:

Originally Posted by 94cc0rd

do you guys know of the most common or well known "rattles" on a s14?

all I hear right now is my license plate rattle, but i'm sure once that's eliminated, i'll hear more..

The wall below the tail lights in the trunk.

Shawn_of_the_Dead · 02-21-2006, 10:56 PM

you can also just buy the dynamat license backing...it does the same thing....just more expensive...20 bucks I think.

Ricks15 · 02-21-2006, 11:38 PM

What you dont want hear nosies damn nothing sounds more better than a stripped out fastback you hear everything.

FRpilot · 02-22-2006, 12:58 AM

isnt it expensive too?

Maeda · 02-22-2006, 02:36 AM

Quote:

Originally Posted by S14DB

Most OEM sound deadening is worthless. Remove all the tar and replace the carpet underlayment with house carpet pad.

Elaborate for me if you would S14DB.

So what you're saying is if you have a gutted car, you can make it quiet by adding janky yellow foam from the carpet stores dumpster?

Sweet. I'm totally in if it means I get to raid another dumpster for 'car parts'

***S14DB*** · 02-22-2006, 06:43 AM

Let me elaborate:
1) Remove tar. Replace with Dynamatte. Lighter and more effective than stock.
2) Take out the OEM carpet liner. all it really does is hold carpet shape in our cars. Not much support or deadening. Get some home carpet pad and replace the OEM carpet liner/pad with it. It will make your carpet softer and deaden sound better.

neverlift · 02-22-2006, 07:15 AM

anyone try r blox heard its really good

Maeda · 02-22-2006, 11:40 AM

Hm. Any guesstimation how much replacing the tar with dynamat weighs?

As far as the carpet pad thing goes, you mean put a home carpet pad down then put the top of the carpet over it?

axiomatik · 02-22-2006, 12:14 PM

I hope that is 0.3lbs per square *foot*, otherwise you bought over 4000 pounds of dynamat.

***S14DB*** · 02-22-2006, 01:02 PM

Take up the carpet. Rip off the felt backing and padding off the carpet. Replace with home carpet pad.

Maeda · 02-22-2006, 01:22 PM

Ah. Thanks S14DB

I went the strip the floors down to metal, and use floor mats approach.

S14-vietusmc · 02-23-2006, 10:05 PM

Quote:

Originally Posted by nbrindley

I hope that is 0.3lbs per square *foot*, otherwise you bought over 4000 pounds of dynamat.

hell yeah, 4000lbs aint shit for the might KA

02-21-2006, 04:04 PM	#1
Skyline0586 Zilvia Member Join Date: Jan 2006 Location: Fresno, CA Posts: 207 Trader Rating: (0) Feedback Score: 0 reviews	Dynamatting the whole car.. i just got 100sq ft of Dynamat sound deadening material which is about .3lbs per sq inch. Not sure if im gonna use all of it, but im basically covering the whole floor of the car as well as the headliner, trunk, license plate areas, and behind the rear fenders. Do u think its worth it for the extra weight? Reason I am doing this is because I plan to put a 12inch sub in there and hated the rattle in my Eclipse.

02-21-2006, 05:20 PM	#2
Shawn_of_the_Dead Zilvia Junkie Join Date: May 2005 Location: In my garage.... Posts: 301 Trader Rating: (0) Feedback Score: 0 reviews	I would put the sub in there and see IF and WHERE the rattling occurs. Why add it if you dont need to? I understand it also helps cancel out road noise, but weighs more than it is worth in my opinion. __________________ '93 Coupe BlkTp-SR '07 Chevy HHR - DD

02-21-2006, 08:32 PM	#4
94cc0rd Nissanaholic! Join Date: Apr 2005 Location: Los Angeles, CA Age: 38 Posts: 2,390 Trader Rating: (8) Rides Gallery: 94cc0rd Feedback Score: 8 reviews	i have 2 12"s in my trunk and my license plate rattles soo frickin much.. i hate it! i'm embarassed to bump my system even though I love bass... you should try sound deadening the trunk only first ... and see if theres still any rattles... __________________

02-21-2006, 08:43 PM	#5
koukidough Zilvia Junkie Join Date: Feb 2006 Location: Long Beach, California Age: 43 Posts: 399 Trader Rating: (0) Feedback Score: 0 reviews	use double sided tap for license plate, works everytime =) __________________ 1997 Nissan S14 SE Redtop SR20DET @12psi 1999 Honda Civic Hatch EK9 N/A b16a2 (SOLD)

02-21-2006, 09:15 PM	#6
TurDz Nissanaholic! Join Date: May 2003 Location: Bay Area, CA Posts: 1,618 Trader Rating: (0) Feedback Score: 0 reviews	Yeah, or foam tape. I have dynamatted an entire car before, it's worth it if you're looking for a quiet ride, and something ideal for SOUND QUALITY. If you're just doing it for your subwoofer, isolate where the problem is and just do that portion. No point in doing the whole car unless you're going for great sound staging and want every last detail to come out. __________________

02-21-2006, 06:22 PM	#3
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 44 Posts: 5,013 Trader Rating: (1) Feedback Score: 1 reviews	you're on the wrong forum when it comes to this kind of stuff... lol. i guess it's worth it if you really care about the interior noise level. unless you are in to serious competitive racing, i don't see why you should worry about some extra pounds. you're putting in a sub... if you were really worried about weight, you'd rip out the entire goddamn sound system instead of upgrading it. it's useless as far as performance goes.

02-21-2006, 09:37 PM	#7
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	A lot of people go overboard with the Sound deadening. You need to cover the seams and holes with 0.5-1" trim over the edges. The flat panels only need a piece 1/4 the size of the panel in the center of the panel. Then hit the bass and cover any rattles. Most OEM sound deadening is worthless. Remove all the tar and replace the carpet underlayment with house carpet pad. __________________ Comments should be taken as Opinions not as Statements of Fact

02-21-2006, 10:07 PM	#8
Suk02Si Zilvia Addict Join Date: Dec 2004 Location: Los Angeles Age: 42 Posts: 831 Trader Rating: (8) Feedback Score: 8 reviews	+1 on the Foam tape. If all you're worried about is License plate rattle, foam tape is the ticket.

02-21-2006, 10:40 PM	#9
94cc0rd Nissanaholic! Join Date: Apr 2005 Location: Los Angeles, CA Age: 38 Posts: 2,390 Trader Rating: (8) Rides Gallery: 94cc0rd Feedback Score: 8 reviews	i'm assuming it's available at any hardware store?? do you guys know of the most common or well known "rattles" on a s14? all I hear right now is my license plate rattle, but i'm sure once that's eliminated, i'll hear more.. __________________

02-21-2006, 10:56 PM	#11
Shawn_of_the_Dead Zilvia Junkie Join Date: May 2005 Location: In my garage.... Posts: 301 Trader Rating: (0) Feedback Score: 0 reviews	you can also just buy the dynamat license backing...it does the same thing....just more expensive...20 bucks I think. __________________ '93 Coupe BlkTp-SR '07 Chevy HHR - DD

02-21-2006, 11:38 PM	#12
Ricks15 Nissanaholic! Join Date: Apr 2005 Location: Los Angeles, CA Age: 39 Posts: 1,661 Trader Rating: (1) Feedback Score: 1 reviews	What you dont want hear nosies damn nothing sounds more better than a stripped out fastback you hear everything.

02-22-2006, 06:43 AM	#15
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Let me elaborate: 1) Remove tar. Replace with Dynamatte. Lighter and more effective than stock. 2) Take out the OEM carpet liner. all it really does is hold carpet shape in our cars. Not much support or deadening. Get some home carpet pad and replace the OEM carpet liner/pad with it. It will make your carpet softer and deaden sound better. __________________ Comments should be taken as Opinions not as Statements of Fact

02-22-2006, 07:15 AM	#16
neverlift Zilvia Member Join Date: Jan 2006 Location: DUVAL Posts: 166 Trader Rating: (0) Feedback Score: 0 reviews	anyone try r blox heard its really good __________________ derp derp

02-22-2006, 11:40 AM	#17
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	Hm. Any guesstimation how much replacing the tar with dynamat weighs? As far as the carpet pad thing goes, you mean put a home carpet pad down then put the top of the carpet over it? __________________

02-22-2006, 12:14 PM	#18
axiomatik Post Whore! Join Date: Dec 2003 Location: ATL Posts: 4,702 Trader Rating: (0) Feedback Score: 0 reviews	I hope that is 0.3lbs per square foot, otherwise you bought over 4000 pounds of dynamat. __________________

02-22-2006, 01:02 PM	#19
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Take up the carpet. Rip off the felt backing and padding off the carpet. Replace with home carpet pad. __________________ Comments should be taken as Opinions not as Statements of Fact

02-22-2006, 01:22 PM	#20
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	Ah. Thanks S14DB I went the strip the floors down to metal, and use floor mats approach. __________________