Sound deadening - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Zeuscannon3777 · 02-09-2023, 05:12 AM

Is 1000mil overboard for 100% coverage of the vehicle?

Spuds · 02-09-2023, 06:27 PM

My understanding is you get a lot more value per $ and lb if you use it in specific locations. What those locations are will need somebody else to tell you.

Grady · 02-09-2023, 10:17 PM

100% coverage is overkill. Shoot for around 80%

soundman98 · 02-09-2023, 10:24 PM

repost:
https://www.ft86club.com/forums/show...=143757&page=2

Quote:

Originally Posted by soundman98

most people lather it on like shaving cream.

the real trick is to deaden the floppy panels.
https://www.ft86club.com/forums/show...ostcount=22629

humfrz · 02-11-2023, 02:35 AM

Quote:

Originally Posted by Zeuscannon3777

Is 1000mil overboard for 100% coverage of the vehicle?

I suggest you just buy a quieter car -

Qwimby1 · 02-11-2023, 08:48 AM

I did a Dynamat treatment on my last Miata. Did doors, rear fenders and trunk area but not under front carpets. It didn't lower the decibel levels at highway speed, but did give the car an overall solider feeling, if that makes any sense. All my Miatas had hard tops which never came off, BTW.

x808drifter · 02-12-2023, 05:06 AM

Quote:

Originally Posted by Qwimby1

I did a Dynamat treatment on my last Miata. Did doors, rear fenders and trunk area but not under front carpets. It didn't lower the decibel levels at highway speed, but did give the car an overall solider feeling, if that makes any sense. All my Miatas had hard tops which never came off, BTW.

All that sound deadening can be offset by removing the soft-top like mine. XD

euniqe · 02-15-2023, 10:32 PM

Quote:

Originally Posted by Qwimby1

I did a Dynamat treatment on my last Miata. Did doors, rear fenders and trunk area but not under front carpets. It didn't lower the decibel levels at highway speed, but did give the car an overall solider feeling, if that makes any sense. All my Miatas had hard tops which never came off, BTW.

Sound deadening lowers the resonant frequency of the substrate to which it's applied by absorbing sound energy, turning it into heat. It lowered the low-frequency boominess of my exhaust when applied in the spare wheel well, but did nothing for higher frequency road noise.

The reason it makes the car feel more solid is likely because the sound made by rattling panels from bumps, suspension noise etc. are more greatly attenuated.

If you think about holding a sheet of metal in your hand, it's going to flex the most in the middle between your hands. If you put sound deadener in this location, that will do 90% of the job. As others have you said, you absolutely do not need full coverage for a substantial outcome.

Zeuscannon3777 · 02-22-2023, 12:31 AM

Quote:

Originally Posted by humfrz

I suggest you just buy a quieter car -

Trying to make it luxury style. Already started my interior from black to white. Trying to do 100% white. And trying to have a very very very quiet ride. I plan on keeping this car. Plan on keeping and building the engine. Then when the time comes EV swapping it with 4 wd motors. Want it to be super luxurious and nice while keeping oem as possible. Then body will be made out of complete carbon fiber. Then I’ll slowly move the interior to white carbon fiber. Don’t want to spend 100k on a car already built would rather spend 40k on something I did without touching the motor. Then plan on spending 60k on the motor. Excluding the ev swap.

Zeuscannon3777 · 02-22-2023, 12:33 AM

Quote:

Originally Posted by soundman98

repost:
https://www.ft86club.com/forums/show...=143757&page=2

Nice. I plan on doing it myself. With thick as possible. Then gotta find an all white carpet.

soundman98 · 02-22-2023, 08:12 PM

Quote:

Originally Posted by Zeuscannon3777

Trying to make it luxury style. Already started my interior from black to white. Trying to do 100% white. And trying to have a very very very quiet ride. I plan on keeping this car. Plan on keeping and building the engine. Then when the time comes EV swapping it with 4 wd motors. Want it to be super luxurious and nice while keeping oem as possible. Then body will be made out of complete carbon fiber. Then I’ll slowly move the interior to white carbon fiber. Don’t want to spend 100k on a car already built would rather spend 40k on something I did without touching the motor. Then plan on spending 60k on the motor. Excluding the ev swap.

white carbon fiber doesn't and can't exist.

carbon is black by nature.

and you can't do the entire car as carbon fiber due to the unibody structure. and even if you do it, your insurance is going to have something to say about modifying the structural integrity and crash-worthiness of the vehicle they carry the liability for.

NoHaveMSG · 02-22-2023, 08:50 PM

Quote:

Originally Posted by Zeuscannon3777

Trying to make it luxury style. Already started my interior from black to white. Trying to do 100% white. And trying to have a very very very quiet ride. I plan on keeping this car. Plan on keeping and building the engine. Then when the time comes EV swapping it with 4 wd motors. Want it to be super luxurious and nice while keeping oem as possible. Then body will be made out of complete carbon fiber. Then I’ll slowly move the interior to white carbon fiber. Don’t want to spend 100k on a car already built would rather spend 40k on something I did without touching the motor. Then plan on spending 60k on the motor. Excluding the ev swap.

Ultramaroon · 02-22-2023, 09:20 PM

I don't think wall-o-text was squaddy's style.

DarkPira7e · 02-22-2023, 10:20 PM

Imagine being able to build an entire car out of carbon fiber for 40k

02-09-2023, 05:12 AM	#1
Zeuscannon3777 Member Join Date: May 2022 Drives: Frs Location: San Bernardino Posts: 20 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s)	Sound deadening Is 1000mil overboard for 100% coverage of the vehicle?

02-09-2023, 06:27 PM	#2
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,697 Thanks: 26,779 Thanked 12,750 Times in 6,320 Posts Mentioned: 88 Post(s)	My understanding is you get a lot more value per $ and lb if you use it in specific locations. What those locations are will need somebody else to tell you. __________________ If a picture is worth a thousand words, a model is worth ten thousand pictures. Also: "Build Thread"

02-22-2023, 09:20 PM	#13
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,394 Thanks: 53,054 Thanked 37,230 Times in 19,309 Posts Mentioned: 1118 Post(s)	I don't think wall-o-text was squaddy's style. __________________ service manuals

02-22-2023, 10:20 PM	#14
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 4,158 Thanks: 3,444 Thanked 4,332 Times in 2,186 Posts Mentioned: 34 Post(s)	Imagine being able to build an entire car out of carbon fiber for 40k __________________ Turbo FR-S Build - Build Thread JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block

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Grady Senior Member Join Date: Jun 2017 Drives: BRZ Yellow, Ranger, Evora, WCM S2K Location: Dallas Posts: 1,712 Thanks: 354 Thanked 1,500 Times in 786 Posts Mentioned: 14 Post(s)	100% coverage is overkill. Shoot for around 80%

02-11-2023, 08:48 AM	#6
Qwimby1 Senior Member Join Date: Nov 2015 Drives: 14 FRS Monogram, 05 Mazdasped Miata Location: Sarasota, FL Posts: 599 Thanks: 139 Thanked 151 Times in 110 Posts Mentioned: 4 Post(s)	I did a Dynamat treatment on my last Miata. Did doors, rear fenders and trunk area but not under front carpets. It didn't lower the decibel levels at highway speed, but did give the car an overall solider feeling, if that makes any sense. All my Miatas had hard tops which never came off, BTW.

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