Complete Sound Deadening Project

[tacosupreme____]

The front door video is live. No before and after dB tests yet, because it got too long. I will do that after the rear doors and lift gate are complete...

 

[J44]

What a great project, but way too much for most of us to do. I just had my LC under coated with Waxoyl, they spray under the car, wheel wells, hood, rear hatch, doors, they don’t drill just where there are access points. I run factory size KO3’s 34psi winter, have a 2.5” SST ReadyLift kit on it. I used the app today to measure dbl’s, on highway, heating off, stereo off, speed about 75 miles per hour/ 120 kph was getting between 65dB - 68.1dB. I did not take a base reading before I under coated, did not think of it until I saw this post. I will test running the app for longer periods to see what I get, today just took screen shots.

 

[tacosupreme____]

I can't wait to get the quarter trim panels off inside and deaden those rear inner wheel tubs. I'm sure it will kill a lot of road noise inside the cab.

 

[Area 51]

MFE project and posting.
Thx.

 

[tacosupreme____]

Dropping in to update this thread. Still trying to find the time to get the rear doors and lift hatch done with the holidays and a 4 month old.

Will get on it as soon as I can!

 

[tacosupreme____]

Getting started on the rear lift gate. Sounds like an empty oil drum inside…

 

[tacosupreme____]

Passenger side is easy to access with the speaker removed. I was adamant about matching the same amount of sound deadening on the driver side, but there is no giant access hole. So, I had to cut the large sheet in half and feed two pieces in a small opening at the bottom. Then squeeze my hands/arm deep in there to roll it all out.

 

[tacosupreme____]

3.5 hours in and just about got most of it done.

 

[tacosupreme____]

Got the rear finished up and reassembled. There were a total of 6 hours labor on the rear lift gate alone. Next up, rear doors and dB test after!

 

[solidsam]

Taco, request, can you install the GX550 laminated windows? Should be plug and play. Someone said the regulators might not be able to move them. I doubt it, I bet it moved the heavier windows and gives great sound deadening.

 

[tacosupreme____]

Taco, request, can you install the GX505 laminated windows? Should be plug and play.

I'm not sure, but I do know that my windshield is the acoustic option from the factory. Got a rock chip and that's what Toyota told me it was per my vin (part number: 56101-6B934):

Edit* I also have heads up display and adaptive cruise. Maybe that's why I have the acoustic glass.

 

[solidsam]

I'm not sure, but I do know that my windshield is the acoustic option from the factory. Got a rock chip and that's what Toyota told me it was per my vin (part number: 56101-6B934):

View attachment 55204

Edit* I also have heads up display and adaptive cruise. Maybe that's why I have the acoustic glass.

No we all have acoustic windshield, but the side doors are only acoustic and lamanted on the GX550. You can buy them from any parts place for about $350.

 

[tacosupreme____]

Not every LC250 has acoustic windshield… But I do think that would be a cool project to install GX550 side windows and see if it makes a difference.

 

[lar317]

Why would they make 3 different types of glass, This does not make sense, That would imply some model higher trim levels do not have acoustic glass because of the digital inner mirror, I have a 25 1958 with chips in the windshield and would like acoustic glass if it is replaced.

 

[Calokie]

Got the rear finished up and reassembled. There were a total of 6 hours labor on the rear lift gate alone. Next up, rear doors and dB test after!

View attachment 55023View attachment 55024

did the sound deadening on the rear hatch improve the audio system sound output

 

[ultane]

Taco, request, can you install the GX550 laminated windows? Should be plug and play. Someone said the regulators might not be able to move them. I doubt it, I bet it moved the heavier windows and gives great sound deadening.

Welcome to the asylum.

Using GX windows in a ‘24+ LC has been addressed in the past. They said that it won’t work.

 

[solidsam]

Welcome to the asylum.

Using GX windows in a ‘24+ LC has been addressed in the past. They said that it won’t work.

I don’t care why “they” say. If the source of that info is a dealer, then it ain’t worth a lick. The only reason I can think of for why it wouldn’t work is due to the heavier weight. I bet it works anyway. Would make a great video.

 

[ultane]

I don’t care why “they” say. If the source of that info is a dealer, then it ain’t worth a lick. The only reason I can think of for why it wouldn’t work is due to the heavier weight. I bet it works anyway. Would make a great video.

Well, go for it.

Please let us know how it goes..

 

[solidsam]

Well, go for it.

Please let us know how it goes..

I’m asking Tacosupreme to go for it. I hope he does. I found his videos before I found him on this forum, if anyone can do it, it’s him. Me personally? I don’t need the extra deadening.

 

[tacosupreme____]

Why would they make 3 different types of glass, This does not make sense, That would imply some model higher trim levels do not have acoustic glass because of the digital inner mirror, I have a 25 1958 with chips in the windshield and would like acoustic glass if it is replaced.

Not sure, but Toyota does weird things that's for sure!

did the sound deadening on the rear hatch improve the audio system sound output

Honestly yes, I hear an improved audio quality after doing the rear hatch. I asked my wife if she could tell but she just said I was crazy

I’m asking Tacosupreme to go for it. I hope he does. I found his videos before I found him on this forum, if anyone can do it, it’s him. Me personally? I don’t need the extra deadening.

It's not really something I plan to do...