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Sound Proofing a Lexus

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Old Oct 21, 2010 | 08:46 AM
  #1  
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Default Sound Proofing a Lexus

The noise from the road rushing beneath our vehicles can prove annoying. It can interfere with the quality of the sound coming from car stereo systems and make it more difficult to hear conversations among passengers. To help insulate the passenger compartment from outside noise, Dynamat sound-deadening sheets can be installed.


1.1
Park the vehicle on a level surface. Apply the parking brake and open all doors. Put on your safety glasses. Remove the vehicle's door sill plates by removing the mounting screws with your screwdriver and set them aside.

2.2
Remove the seats. Loosen the mounting bolts of the front seat with a wrench. (The mounting bolts can be located in the passenger compartment on the seat sliders or under the vehicle coming up through the floor pan and into the seat sliders.) If they are accessible under the vehicle, there is no need to raise the vehicle--they can be accessed by reaching under the vehicle approximately 6 to 8 inches. Once the bolts are removed, set the seats aside on the floor. To remove the rear seat, simply push the seat bottom down and at the same time push it toward the trunk (to the rear). When you feel it pop free of the mount, lift the seat up and out of position. Set the seat outside of the vehicle on the floor.

3.3
Remove the seat belts and carpeting. Use a wrench to loosen the mounting bolts and set the seat belts aside. Mark each belt with a piece of masking tape and a pen to ensure it goes into the correct location when reinstalled. Remove the carpeting by simply starting at the front and pulling it toward the rear. It is not glued down and will slide out. Set it aside on a clean floor.

4.4
Clean the floor of the car. Vacuum the entire floor and use a hose to wash it down. Allow it to dry completely before proceeding.

5.5
Peel the protective covering off of the back of the Dynamat to expose the adhesive and apply it to the vehicle's floor. Take care to work slowly so as to eliminate air bubbles. You can trim the Dynamat to size or cut it to shape with a pair of large tin snips. Be sure to cover the entire floor and push it down evenly to smooth it out. If you get any air bubbles, use a razor blade knife to slit the bubble and push the air out with the fiberglass installation tool. Use the razor blade knife to cut around all bolt holes in the floorboards.

6.6
Replace the carpet. Slide the carpeting into position and make sure it is straight.

7.7
Replace the seat belts into their proper position and replace the bolts. Tighten the bolts with a wrench.

8.8
Replace the seats. Replace the rear seat first by sliding it into position and push it down as you push it into place. When you feel it snap into the track, allow it to slide forward and into the locked position. Replace the front seat by setting the seat into position and replacing the mounting bolts. Tighten the bolts with a wrench.

9.9
Replace the door sill plates by setting them into position and replacing the mounting screws. Tighten the screws with a screwdriver. Close the doors.

Last edited by DaveGS4; Oct 22, 2010 at 08:41 AM. Reason: removed link with advertising; do not repost please.
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Old Oct 21, 2010 | 09:51 AM
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i did EVERYWHERE even my headliner except my floors.. did the inner door skins also just didnt show them in the picture.i will do the floors when i change to black interior.


took these pics while i was working on it some some parts havent been done,i just used extreme on all the interior.











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Old Oct 21, 2010 | 11:51 AM
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i got nothing to add but wow!!! that is alot of dynamat...
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Old Oct 21, 2010 | 12:00 PM
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This may be a stupid question, but is there a noticable difference?
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Old Oct 22, 2010 | 07:18 AM
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Originally Posted by kamlung
i got nothing to add but wow!!! that is alot of dynamat...
yup, will be even more when i finally get my black interior and do my floors

Originally Posted by gray_es300
This may be a stupid question, but is there a noticable difference?
yes....
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Old Oct 22, 2010 | 08:32 AM
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Don't know what to say but wow ........ for the work and time.
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Old Oct 23, 2010 | 01:14 PM
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Looks great! Wondering how much weight it adds.
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Old Oct 24, 2010 | 05:43 PM
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how much did that cost? dang man that stuff isnt cheap!!!!!!
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Old Oct 26, 2010 | 01:07 PM
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Originally Posted by ClearP
Looks great! Wondering how much weight it adds.
alot, my car is fat as a pig but i dont care. i dont drive fast....plus my sub is 72 lb,2nd battery is 68, box/amp rack are in the mid 150's so weight is the least of my issues. im redoing my box to house 2 subs now and then im gonna weigh her

Originally Posted by willhickey
how much did that cost? dang man that stuff isnt cheap!!!!!!
alot lol....i found bulk kits on ebay. WHERE IS OP NOW?
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Old Oct 26, 2010 | 03:55 PM
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Originally Posted by sakataj
WHERE IS OP NOW?
My guess is that since it was a flyby spammer, he's long gone or was shown the door.

Big Mack
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Old Oct 26, 2010 | 05:38 PM
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must be quiet like a coffin after soundproofing a lexus
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Old Oct 27, 2010 | 11:40 AM
  #12  
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Originally Posted by Big Mack
My guess is that since it was a flyby spammer, he's long gone or was shown the door.

Big Mack
yea i noticed dave removed his link so i guess so

Originally Posted by chikoo
must be quiet like a coffin after soundproofing a lexus
yeah except that wind noise from the incorrectly replaced windshield
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Old Oct 27, 2010 | 12:29 PM
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Originally Posted by sakataj
yea i noticed dave removed his link so i guess so



yeah except that wind noise from the incorrectly replaced windshield
Balance is very important.....the amount of noise from the doors, floors and wind noise should negate each other. The moment you soundproof one of these, you will start hearing sounds from the other areas. Not new. They were already there.
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Old Oct 28, 2010 | 12:02 PM
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Nice install! If Dynamat wasn't so expensive, I'd buy some for my cars.
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Old Nov 2, 2010 | 02:14 AM
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an alternative/cheaper version of dynamat is b-quiet. http://www.b-quiet.com/index.html


you're just adding mass to metal to reduce rattles. so if you want to save even more money you can go to home depot and buy this roofing stuff that has asphalt on one side and aluminum on the other. looks just like dynamat without the logos.

i used it on my old car. no rattles and doesn't smell in the summer.
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