Interior noise mitigation
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@cosmomiller 's 9-year old killing road noise essay is hard to improve on. You've got the time and workshop space.
-- Chuck
-- Chuck
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An S2000 is never going to be a truly comfy or quiet. You knew this before you bought the car, it was posted in your intro thread.
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And my Harley was BFO most of the rest were boring black!
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Others here have modded their cars to fit their purpose, just like you have, if someone wants to make it as quiet as a Bentley let them have it.
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don’t throw good money after bad
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From: South Carolina
I never said I wanted it quiet , never thought it would be quiet , its not that kind of car. I said, if you ever bothered to read the post, I wanted it quieter.. Pay Attention!!
Joined: Aug 2012
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From: Foothills East of Sacramento
I really hate it when someone asks a legit question, and you get stuff like if you want quiet buy a Lexus. Just stop. Who are you to decide what mods are acceptable.
You'll get themost bang for buck from doing doors. Then floors. Then trunk. Its tire noise, yours and the other cars around, that make the most noise (assuming you don't have a hella loud exhaust).
You can actually hear engine and other pleasant sounds better, since there isn't so much less pleasant sounds. Signal to noise ratio. Also hear stereo better and easier to have a conversation with passenger.
Do 25% coverage using dynamat type material. I used 40 mil Noico from Amazon. Divide large, flat areas into square areas, then cut a piece 25% of that area, and place product in center of square.
Then apply 3M Thinsulate at full coverage to back of door panel.
Dynamat type material doesn't block sound waves. It adds mass to change resonant frequency. Gets rid of that oil drum effect. Adding more than 25% coverage just adds weight and expense, doesn't make it any quieter.
Thinsulate does block sound waves. So needs to be applied at 100% to work.
You'll get themost bang for buck from doing doors. Then floors. Then trunk. Its tire noise, yours and the other cars around, that make the most noise (assuming you don't have a hella loud exhaust).
You can actually hear engine and other pleasant sounds better, since there isn't so much less pleasant sounds. Signal to noise ratio. Also hear stereo better and easier to have a conversation with passenger.
Do 25% coverage using dynamat type material. I used 40 mil Noico from Amazon. Divide large, flat areas into square areas, then cut a piece 25% of that area, and place product in center of square.
Then apply 3M Thinsulate at full coverage to back of door panel.
Dynamat type material doesn't block sound waves. It adds mass to change resonant frequency. Gets rid of that oil drum effect. Adding more than 25% coverage just adds weight and expense, doesn't make it any quieter.
Thinsulate does block sound waves. So needs to be applied at 100% to work.
Did it add more weight? A little but I really don't notice it. It is not as if I have a delete CR. I don't track the car. I might add I think it is important, if you go the Dynamate type material install, to make sure you get a product that does not smell. Some do and your car will reek. I have experienced cars that have that kind installed which is why I settled for Dynamate.
Last edited by cosmomiller; Jan 10, 2023 at 12:39 PM.
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Stop. Just stop. Stop trying to equivocate wanting it a little quieter to wanting to make it into a Bentley.
People have done it, its not difficult, and it doesn't take away from the cars character. In fact, I'd say it enhances it. The only noises you stop hearing are ones you don't want to hear. White noise, etc. The engine sounds are actually enhanced, as there is improved signal to noise ratio.
If you want to gut your interior and drive a race car on the street, I'm not gonna tell you you bought the wrong car. I'll even offer helpful suggestions if I have any. Your car your choice.
People have done it, its not difficult, and it doesn't take away from the cars character. In fact, I'd say it enhances it. The only noises you stop hearing are ones you don't want to hear. White noise, etc. The engine sounds are actually enhanced, as there is improved signal to noise ratio.
If you want to gut your interior and drive a race car on the street, I'm not gonna tell you you bought the wrong car. I'll even offer helpful suggestions if I have any. Your car your choice.