Cabin noise

Guard Dad · 03-20-2012, 10:25 AM

Just a heads up, I had the wheels off the car yesterday and I checked the rear wheel wells to see how "noisy" they were when tapped with a knuckle. I found that the outer half of the driver side wheel well had a distinct ring to it when tapped. The passenger side rear wheel well was not nearly as bad, probably because the gas filler pipe changes the shape of the wheel well liner. This was after I had done a fairly extensive Dynamat job on the car (see my prior posts early in this thread). I had some rubberized undercoating in the garage so I applied a heavy coating on the outer half of both wheel wells which seemed to make a modest improvement, this should help with "pebble noise" too. My advice would be to include a heavy application of undercoating in the rear wheel wells to complement the application of Dynamat in the interior of the car.

'10Anamoly · 03-20-2012, 11:01 AM

A couple of things to consider..

Dynamat on the inside of the front wheel liners on the front (black plastic) made a substantial difference in volume.
Dynamat (three strips spread evenly) on the metal heat shield above the muffler area stopped all the clangy vibration there.
Dynamat on the doors is a very substantial difference too, more than the floor of the hatch I believe.

Bonzo · 03-20-2012, 02:05 PM

Quote:

Originally Posted by Guard Dad

Just a heads up, I had the wheels off the car yesterday and I checked the rear wheel wells to see how "noisy" they were when tapped with a knuckle. I found that the outer half of the driver side wheel well had a distinct ring to it when tapped. The passenger side rear wheel well was not nearly as bad, probably because the gas filler pipe changes the shape of the wheel well liner. This was after I had done a fairly extensive Dynamat job on the car (see my prior posts early in this thread). I had some rubberized undercoating in the garage so I applied a heavy coating on the outer half of both wheel wells which seemed to make a modest improvement, this should help with "pebble noise" too. My advice would be to include a heavy application of undercoating in the rear wheel wells to complement the application of Dynamat in the interior of the car.

THANK YOU!!!! This is what I have been saying about the pebble noise issue from the beginning. If what I've done so far doesn't help me ignore the pebbles a month from now, I'm going to paint them with rubber stuff too. Glad to hear it makes a difference.

Thanks again --- Bonzo

RiCharlie · 03-23-2012, 07:10 AM

Quote:

Originally Posted by Bonzo

THANK YOU!!!! This is what I have been saying about the pebble noise issue from the beginning. If what I've done so far doesn't help me ignore the pebbles a month from now, I'm going to paint them with rubber stuff too. Glad to hear it makes a difference.

Thanks again --- Bonzo

Maybe it they cleaned the streets where you guys live this would not happen!

Bonzo · 03-23-2012, 09:08 AM

Quote:

Originally Posted by RiCharlie

Maybe it they cleaned the streets where you guys live this would not happen!

Actually, they do they do, all the time. Roads are very clean here on Southwest Ohio. It's not like Michigan, where the Mafia controls the road crews and they still have tons of dirt roads.

I just think it's everyone's different perspective on the noises they find irritating. A lot of folks here hate the tire noise. To that I'll use the over used phrase, "it's a sports car, and tire noise is good." I like that it's got a lot of tire noise. Makes me feel like I'm in a beast!

This tire noise is "in" everyone's Z, but it only bothers some.

The pebble noise is there too, in each and every Z. Everyone has it. Some have said that while they hear the plinking rocks, it doesn't bother them a bit. Others have said they've never noticed it, which just means it REALLY doesn't bother them (or every car they've ever owned has also been a tin can so they expect it to sound this way). And others like me don't like it. We want a sports car with engine and exhaust and tire noise, but we don't want incessant plinking just over my shoulder.

So it's just all about what bothers the individual in particular.

rebe945 · 03-23-2012, 09:22 AM

Now. Bonzo, I re-read the thread and found one post who mentioned he had a buddy use a homeowners product on his RX8. Had a problem with smell and melting. He didnt say it was Frost King. Frost King is meant to insulate and dampen vibrations on metalized ductwork that transfers heat to your home's rooms. Wasnt trying to be cheap. After seeing Dynamat , Frost King is thicker, so I chose it instead. Money wasnt a factor. Shyt, Id spend anything to satisfy myself with my car . I will monitor the product and let Evil and others know who may use it. By the way, My wheels and tires are on the way and should have them on late next week. Thats why I did this. The base 18s are said to be quieter than the larger 19s. My tires will be 255/295s Hankooks V12s. Ill report back on the issue of noise after the install.

Evil Sports · 03-24-2012, 07:34 AM

I find it hard to believe Frost king would fail like that since its primarily associated with High temp heat ducts. Not worried at this point.

rebe945 · 03-24-2012, 01:49 PM

Quote:

Originally Posted by Evil Sports

I find it hard to believe Frost king would fail like that since its primarily associated with High temp heat ducts. Not worried at this point.

Me either

Bonzo · 03-26-2012, 01:42 PM

Quote:

Originally Posted by rebe945

Now. Bonzo, I re-read the thread and found one post who mentioned he had a buddy use a homeowners product on his RX8. Had a problem with smell and melting. He didnt say it was Frost King. Frost King is meant to insulate and dampen vibrations on metalized ductwork that transfers heat to your home's rooms. Wasnt trying to be cheap. After seeing Dynamat , Frost King is thicker, so I chose it instead. Money wasnt a factor. Shyt, Id spend anything to satisfy myself with my car . I will monitor the product and let Evil and others know who may use it. By the way, My wheels and tires are on the way and should have them on late next week. Thats why I did this. The base 18s are said to be quieter than the larger 19s. My tires will be 255/295s Hankooks V12s. Ill report back on the issue of noise after the install.

This thread is so friggin' long it's hard to remember who is saying what. As it turns out, it was YOU who mentioned Frost King, way back in February. So it was me who's mistaken. However, I think where it got me is that you've posted the same info many times over, and each time it sort of sounds like your mentioning it for the first time. Almost like you are trying to sell it or something. It also made it sort of appear like multiple people were posting it up, when in reality it was just you posting again. So my bad. But anyway, it appears you and Evil Sports are the 2 who have tried it and I guess we'll see about how it holds up. I really REALLY hope you are right and it's a different product than what scottIN mentioned, because that would suck.

Quote:

I find it hard to believe Frost king would fail like that since its primarily associated with High temp heat ducts. Not worried at this point.

High temp heat ducts? Just wondering what you are referring to? Certainly in-home ducting can not be considered high temp? I mean the inside of cars can get really hot, much hotter than the air a furnace blows through the ducts.

I sincerely hope you guys are right, and it would certainly go to show that the specialized material companies are just making more profit for a name.

I for one was just not willing to take that chance.

rebe945 · 03-26-2012, 03:42 PM

Yea, it was me mentioning it. Simply to inform of progress. I'll be monitoring during the hot weather and post back. Ever try touching your ductwork at the furnace area during the on cycle. Its hot.

Mecinoid · 03-22-2012, 09:10 AM

Quote:

Originally Posted by Guard Dad

Just a heads up, I had the wheels off the car yesterday and I checked the rear wheel wells to see how "noisy" they were when tapped with a knuckle. I found that the outer half of the driver side wheel well had a distinct ring to it when tapped. The passenger side rear wheel well was not nearly as bad, probably because the gas filler pipe changes the shape of the wheel well liner. This was after I had done a fairly extensive Dynamat job on the car (see my prior posts early in this thread). I had some rubberized undercoating in the garage so I applied a heavy coating on the outer half of both wheel wells which seemed to make a modest improvement, this should help with "pebble noise" too. My advice would be to include a heavy application of undercoating in the rear wheel wells to complement the application of Dynamat in the interior of the car.

I'd second that.... Plus, one of the members said it might help to put some FatMat /DynaMat material on the backsides of the fender well liner. Not sure exactly what that means. However, there is a plastic liner that is inside there that I'm going to have a look at. I think putting a bit of material behind that inner fender liner might help.

'10Anamoly · 03-22-2012, 09:33 AM

That plastic liner is where I put Dynamat on mine for the front. It helped a decent bit with noise. Just be careful not to cover up the mounting holes as I accidentally did. I just poked through and all was fine though.

03-20-2012, 10:25 AM	#1 (permalink)
Guard Dad Enthusiast Member Join Date: Aug 2010 Location: South Orange County, CA Posts: 422 Drives: 2010 370Z Silver A7 Rep Power: 16	Just a heads up, I had the wheels off the car yesterday and I checked the rear wheel wells to see how "noisy" they were when tapped with a knuckle. I found that the outer half of the driver side wheel well had a distinct ring to it when tapped. The passenger side rear wheel well was not nearly as bad, probably because the gas filler pipe changes the shape of the wheel well liner. This was after I had done a fairly extensive Dynamat job on the car (see my prior posts early in this thread). I had some rubberized undercoating in the garage so I applied a heavy coating on the outer half of both wheel wells which seemed to make a modest improvement, this should help with "pebble noise" too. My advice would be to include a heavy application of undercoating in the rear wheel wells to complement the application of Dynamat in the interior of the car. __________________ 2010 Brilliant Silver, Base w/Sport Package, AT7, Katzkin leather, upgraded audio and lots of Dynamat and a bunch of small stuff.

03-20-2012, 11:01 AM	#2 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 18	A couple of things to consider.. Dynamat on the inside of the front wheel liners on the front (black plastic) made a substantial difference in volume. Dynamat (three strips spread evenly) on the metal heat shield above the muffler area stopped all the clangy vibration there. Dynamat on the doors is a very substantial difference too, more than the floor of the hatch I believe. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

03-23-2012, 09:22 AM	#6 (permalink)
rebe945 Enthusiast Member Join Date: Mar 2010 Location: middleburg hts, ohio Posts: 491 Drives: 2009 370Z black 7at Rep Power: 17	Frost King Now. Bonzo, I re-read the thread and found one post who mentioned he had a buddy use a homeowners product on his RX8. Had a problem with smell and melting. He didnt say it was Frost King. Frost King is meant to insulate and dampen vibrations on metalized ductwork that transfers heat to your home's rooms. Wasnt trying to be cheap. After seeing Dynamat , Frost King is thicker, so I chose it instead. Money wasnt a factor. Shyt, Id spend anything to satisfy myself with my car . I will monitor the product and let Evil and others know who may use it. By the way, My wheels and tires are on the way and should have them on late next week. Thats why I did this. The base 18s are said to be quieter than the larger 19s. My tires will be 255/295s Hankooks V12s. Ill report back on the issue of noise after the install. Last edited by rebe945; 03-23-2012 at 06:05 PM.

03-24-2012, 07:34 AM	#7 (permalink)
Evil Sports Base Member Join Date: May 2011 Location: Mass Posts: 187 Drives: 11-370z-Blue-M6-ST Rep Power: 16	I find it hard to believe Frost king would fail like that since its primarily associated with High temp heat ducts. Not worried at this point. __________________ My current Rice stable, Lexus RX 330, Nissan 370z, Honda Aquatrax turbo, Yamaha 212SS

03-26-2012, 03:42 PM	#10 (permalink)
rebe945 Enthusiast Member Join Date: Mar 2010 Location: middleburg hts, ohio Posts: 491 Drives: 2009 370Z black 7at Rep Power: 17	Frost King Yea, it was me mentioning it. Simply to inform of progress. I'll be monitoring during the hot weather and post back. Ever try touching your ductwork at the furnace area during the on cycle. Its hot.

03-22-2012, 09:33 AM	#12 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 18	That plastic liner is where I put Dynamat on mine for the front. It helped a decent bit with noise. Just be careful not to cover up the mounting holes as I accidentally did. I just poked through and all was fine though. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

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