Alternative Soundproofing/dampening

Lather · 10-25-2005, 02:15 AM

I stripped it down last weekend. Drilled out the speakers and took out the carpet. Here’s a pic. Sorry, I was in the garage and didn’t have enough light so I brightened it up. You can see the trunk and hybrid battery in the front and the dash in the back.

I used 2 gallons of sound damping paint. I didn’t paint anything except the interior; wheel wells, floor, inside and outside door panels; trunk walls and floor. Right now, I only have the carpet, front seats and console back in. It doesn’t sound like a real car when it’s going down the road. Lots of clicking. And kind of a whoosh. Right now I can’t tell how much quieter it will be. I’m still trying to find rattles and loud spots before I add speakers and put the rest on the interior in.

It takes a couple of hours to take it apart. I spent one hour (so far) putting it together and about 4-5 hrs/gallon to paint it. I did it over 2 days so the layers would dry better. I’ve got some Dynamat extreme but only put in a little bit so far. I’m going the use the rest when I put in the speakers.

Bill Merchant · 10-25-2005, 02:54 AM

Thanks for that awesome picture, Lather. For those of us who aren't as ambitious, did you notice any places where you really need to dampen sound? The doors are obvious. I'm thinking the back quarter panels, for example.

Lather · 10-25-2005, 02:09 PM

Thanks Bill, It’s always time consuming and the paint wasn’t much faster than doing dynamat.

Like you said, the doors needed it the most. After that, the four wheel wells, the walls of the trunk area, around the back seat and just in front of the firewall. There were small patches of white sound dampening material in the car but not a lot. The floor and spare tire space had a lot of the same heavy asphalt that my Tundra had. I was surprised to find that.

Considering the dampening effect versus time/money; the floor and spare tire may not have been worth it as much as the rest of the car. But when you’ve been painting for four hours and still have a quarter gallon left, the floor looks great. I gave it two coats.

The problem with doing the rear wheel wells is the electrical cables. The 12V is on one side and the NiMH is on the other. For some reason, I couldn’t get myself to stick a wet, possibly conductive brush near that big orange cable. I used dynamat there.

datavortex · 10-25-2005, 11:08 PM

Cool, nice pic. Thanks.

I've been putting tiny strips of B-Quiet into my doors for a few days now, cutting up my arms and feeling very hardcore. But, wow, that is really going all the way. You've inspired me to look at going beyond just the doors.

10-25-2005, 02:15 AM	#1
Lather Join Date: Sep 2005 Posts: 23 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	I stripped it down last weekend. Drilled out the speakers and took out the carpet. Here’s a pic. Sorry, I was in the garage and didn’t have enough light so I brightened it up. You can see the trunk and hybrid battery in the front and the dash in the back. I used 2 gallons of sound damping paint. I didn’t paint anything except the interior; wheel wells, floor, inside and outside door panels; trunk walls and floor. Right now, I only have the carpet, front seats and console back in. It doesn’t sound like a real car when it’s going down the road. Lots of clicking. And kind of a whoosh. Right now I can’t tell how much quieter it will be. I’m still trying to find rattles and loud spots before I add speakers and put the rest on the interior in. It takes a couple of hours to take it apart. I spent one hour (so far) putting it together and about 4-5 hrs/gallon to paint it. I did it over 2 days so the layers would dry better. I’ve got some Dynamat extreme but only put in a little bit so far. I’m going the use the rest when I put in the speakers. Attached Thumbnails

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10-25-2005, 02:54 AM	#2
Bill Merchant absit invidia Join Date: May 2005 Location: USA \| Oregon \| Portland area \| 97004 \| Posts: 4,096 My Car: 2007 Prius Model: Package: #5 Thanks: 19 Thanked 17 Times in 14 Posts Friends: 62	Thanks for that awesome picture, Lather. For those of us who aren't as ambitious, did you notice any places where you really need to dampen sound? The doors are obvious. I'm thinking the back quarter panels, for example.

10-25-2005, 02:09 PM	#3
Lather Join Date: Sep 2005 Posts: 23 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Thanks Bill, It’s always time consuming and the paint wasn’t much faster than doing dynamat. Like you said, the doors needed it the most. After that, the four wheel wells, the walls of the trunk area, around the back seat and just in front of the firewall. There were small patches of white sound dampening material in the car but not a lot. The floor and spare tire space had a lot of the same heavy asphalt that my Tundra had. I was surprised to find that. Considering the dampening effect versus time/money; the floor and spare tire may not have been worth it as much as the rest of the car. But when you’ve been painting for four hours and still have a quarter gallon left, the floor looks great. I gave it two coats. The problem with doing the rear wheel wells is the electrical cables. The 12V is on one side and the NiMH is on the other. For some reason, I couldn’t get myself to stick a wet, possibly conductive brush near that big orange cable. I used dynamat there.

10-25-2005, 11:08 PM	#4
datavortex Senior Member Join Date: Apr 2005 Location: Atlanta, Georgia, USA Posts: 114 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Cool, nice pic. Thanks. I've been putting tiny strips of B-Quiet into my doors for a few days now, cutting up my arms and feeling very hardcore. But, wow, that is really going all the way. You've inspired me to look at going beyond just the doors.