Dynamat and sound deadining to make Genny quieter! Have any one did that?

[Cobra]

I saw several videos in youtube about how they make the car quieter by using dynamat? I wonder to know any one tried that on genny and is there a real difference noticeable?

 

[OneFunGenesis]

god allmighty:


http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=1332&highlight=dynamat

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=5732&highlight=dynamat

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=10474&highlight=dynamat

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=10922&highlight=dynamat

All I searched was "Dynamat"

Also, please see: http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=7662

https://www.youtube.com/watch?feature=player_embedded&v=B9q2jNjOPdk

 

[Cobra]

god allmighty:


http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=1332&highlight=dynamat

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=5732&highlight=dynamat

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=10474&highlight=dynamat

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=10922&highlight=dynamat

All I searched was "Dynamat"

Also, please see: http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=7662

https://www.youtube.com/watch?feature=player_embedded&v=B9q2jNjOPdk

Thanks alot, the reason i dont post on an existing thread is that i know no guy going to check older threads and answer my post, so i create new thread so as to get an answer as fast as possible

 

[Mark_888]

Thanks alot, the reason i dont post on an existing thread is that i know no guy going to check older threads and answer my post, so i create new thread so as to get an answer as fast as possible

I think that just about everyone checks either "Today's Posts" or "New Posts" so it does not matter if you post in an new or old thread, everyone will see it.

 

[OneFunGenesis]

When you post in that thread, it bumps it to the top and makes it bold so people know there is a new post and they will read it and respond. Believe me, it works. I have been on forums for almost a decade now and it works on everyone I have been on.

Thanks.

 

[Rey]

Been there, done that with three previous Genesis to a varying extent. The improvement is noticeable but not dramatic.
In Oregon roads are very noisy due to use of studded winter tire damage, so sound attenuation is important.
I did not use Dynomax. In my opinion it is too expensive for its value. I used a simple cheap product available at any Lowe's store. It is a butyl rubber rain gutter repair "tape" which is coated on one side with reflective aluminum. This costs about $1/sq. ft. It holds up very well. Have it on another car for six years now with no degradation or loosening.

 

[stuofsci02]

god allmighty:



https://www.youtube.com/watch?feature=player_embedded&v=B9q2jNjOPdk

Awesome.. That about sums it up...

 

[OneFunGenesis]

. I'm not a mod because I'm pretty hahaha

 

[Cobra]

Been there, done that with three previous Genesis to a varying extent. The improvement is noticeable but not dramatic.
In Oregon roads are very noisy due to use of studded winter tire damage, so sound attenuation is important.
I did not use Dynomax. In my opinion it is too expensive for its value. I used a simple cheap product available at any Lowe's store. It is a butyl rubber rain gutter repair "tape" which is coated on one side with reflective aluminum. This costs about $1/sq. ft. It holds up very well. Have it on another car for six years now with no degradation or loosening.

Thanks for reply, adding this material seems to be too hard because i have to remove all carpet and seats, right? So im thinking to do it from below i mean i add them under the car from outside below. If thats not going to make real big difference im not going to do that!!! So what do you think?

 

[Cobra]

When you post in that thread, it bumps it to the top and makes it bold so people know there is a new post and they will read it and respond. Believe me, it works. I have been on forums for almost a decade now and it works on everyone I have been on.

Thanks.

Thanks for making it clear for me.

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Help support this site so it can continue supporting you!

 

[Rey]

I think adding material to the bare chassis from underneath is not a good idea. That written, you can add sound deadening to the underside of fenders where it is protected by the inner fenders. This will help deaden tire noise. I have done this with good results.

 

[Cobra]

I think adding material to the bare chassis from underneath is not a good idea. That written, you can add sound deadening to the underside of fenders where it is protected by the inner fenders. This will help deaden tire noise. I have done this with good results.

I wonder if you tell me how you did yours? I mean you removed all the stuff from inside the car including seats and carpet, and did you applied it to the doors also? It seems to be very hard

 

[shagnat]

I wonder if you tell me how you did yours? I mean you removed all the stuff from inside the car including seats and carpet, and did you applied it to the doors also? It seems to be very hard

I agree with that being a bigger job than most of us would want to tackle.

What I'm wondering is buying some of that "foam insulating" stuff that expands would work by just drilling a hole on the underside of the wheel well and squirt it in there.

It sounds very feasible but not sure as I've never done it or heard of anyone who has.

Thoughts anyone?

 

[Gunkk]

I would not recommend using "Great stuff" on your car. It hardens rigid and will not flex, which means it will eventually come loose and rattle like a tin can full of marbles.

 

[Cobra]

I think the first step to decrease noise is to start with changing tires to quitter and more smooth tires. Because tires play big role in generating noise. I think bridgestone turanza T001 will be a great choice!

 

[Mark_888]

What I'm wondering is buying some of that "foam insulating" stuff that expands would work by just drilling a hole on the underside of the wheel well and squirt it in there.

It sounds very feasible but not sure as I've never done it or heard of anyone who has.

Thoughts anyone?

From what I have read, spray foam will help to absorb some sounds, but not perform nearly as well as a high density sound "blocking" material.

 

[visitor]

Adding dynamat will do very little to quiet the car down. Dynamat is meant to convert rattles to low level heat, and stiffen panels. What you need to actually quiet a car down is a sound absorber. Mass loaded vinyl is the correct item for this, coupled with ccf (closed cell foam). Mlv is layered on, with ccf used to stop potential squeaks and rattles. One thing you need to think about with mlv is weight. The stuff produced for auto use is typically 1 to 2 lbs a square foot. I have put liquid deadener, mat deadening, mlv and ccf on my acura rl (it is used solely as a sound quality competition vehicle, noise floor and sound is integral in this application), and have added around 300 lbs in deadener. Price is another factor. You'd be looking at a minimum of $150-200 to get enough material to make ANY form of a difference, and quite a bit more to really do it right. This is assuming you use auto specific stuff. Ive seen diyers use shower underlayment with moderate success (its an mlv around .5-.75 lb/sq ft).

I can provide links if people need any more guidance, or you can certainly do more research yourself!

Hope that helps.

 

[Cobra]

Adding dynamat will do very little to quiet the car down. Dynamat is meant to convert rattles to low level heat, and stiffen panels. What you need to actually quiet a car down is a sound absorber. Mass loaded vinyl is the correct item for this, coupled with ccf (closed cell foam). Mlv is layered on, with ccf used to stop potential squeaks and rattles. One thing you need to think about with mlv is weight. The stuff produced for auto use is typically 1 to 2 lbs a square foot. I have put liquid deadener, mat deadening, mlv and ccf on my acura rl (it is used solely as a sound quality competition vehicle, noise floor and sound is integral in this application), and have added around 300 lbs in deadener. Price is another factor. You'd be looking at a minimum of $150-200 to get enough material to make ANY form of a difference, and quite a bit more to really do it right. This is assuming you use auto specific stuff. Ive seen diyers use shower underlayment with moderate success (its an mlv around .5-.75 lb/sq ft).

I can provide links if people need any more guidance, or you can certainly do more research yourself!

Hope that helps.

Thanks dear, i searched about that, and i want to do something easy and cheap, well removing all interior stuff and adding dynamat is smth not easy plus there is risk u can damage your car while removing interior stuff, i read in few sources that an easy way is to remove the plastic cover in wheel wells and add deadener or foam or any thing can absorb noise underneath wells and then replace the plastic cover back, it might not make a big difference but the difference still will be noticeable? Im going to do that to my allready quiet genesis just so curious to know what difference i will get, today i removed that plastic cover in my wheel well just to see whats found underneath well there were nothing and there were a space which can create eco of noise im sure if i fill this spaces there will be good results!

 

[visitor]

Thanks dear, i searched about that, and i want to do something easy and cheap, well removing all interior stuff and adding dynamat is smth not easy plus there is risk u can damage your car while removing interior stuff, i read in few sources that an easy way is to remove the plastic cover in wheel wells and add deadener or foam or any thing can absorb noise underneath wells and then replace the plastic cover back, it might not make a big difference but the difference still will be noticeable? Im going to do that to my allready quiet genesis just so curious to know what difference i will get, today i removed that plastic cover in my wheel well just to see whats found underneath well there were nothing and there were a space which can create eco of noise im sure if i fill this spaces there will be good results!

Please let us know if that helps! If I were to do something like that (and I think it might be a good idea!) I would personally do it as such- remove, clean and prep, spray rubberized undercoating OR truck bed liner OR roll on liquid deadening, let that dry, coat again, then put deadener down (if you want to use that), then use something like gym rubber/yoga mat/nonslip rubber rug (think: kitchen mat)/shower liner. (I'm suggesting these as you wasn't to save some money, I understand).

That's what I would do, but please, let us know how whatever you do works!

 

[Cobra]

Please let us know if that helps! If I were to do something like that (and I think it might be a good idea!) I would personally do it as such- remove, clean and prep, spray rubberized undercoating OR truck bed liner OR roll on liquid deadening, let that dry, coat again, then put deadener down (if you want to use that), then use something like gym rubber/yoga mat/nonslip rubber rug (think: kitchen mat)/shower liner. (I'm suggesting these as you wasn't to save some money, I understand).

That's what I would do, but please, let us know how whatever you do works!

Ok after i finished that i will post my results here