Cabin noise

secondnissan · 03-25-2012, 03:29 AM

Mecinoid, do you feel the rubberized undercoating in the wheel wells helped out with the pebble sounds? I have dynamatted the whole hatch and lined the rear plastic fender liners with dynamatt. I still get the pebble sound though, i would say i reduced it by 20%. Road noise overall is down about 50% though. I tapped on the metal part of the wheel wells and even where i dynamtted they still still ring/vibrate like crazy. Almost like there is a cavity between the exterior wheel well and the wheel well in the hatch.

rebe945 · 03-26-2012, 07:24 AM

I drove for an hour Sunday and I was simply satisfied with what I did. I used a product bought at Lowes called Frost King and lined my hatch area with 2 layers. Removed the spare and added 1/2 inch of carpet insulation over the insulating product. Everywhere I could add I did. I believe its necessary for more than Dynomat or other products. Think about it. If you could see what insulates a sedan that has no issue. I bet its not Dynomat. too costly for auto makers. Probably just some foam or cloth like products along with rear seating materials. So i left out the spare and folded a small bed comforter and now use the hatch area under the coroplast(the plastic just under the carpeting piece) as an unseen storage compartment. Im done. Im happy. Its a sports car.

Bonzo · 03-26-2012, 01:27 PM

Quote:

Originally Posted by secondnissan

Mecinoid, do you feel the rubberized undercoating in the wheel wells helped out with the pebble sounds? I have dynamatted the whole hatch and lined the rear plastic fender liners with dynamatt. I still get the pebble sound though, i would say i reduced it by 20%. Road noise overall is down about 50% though. I tapped on the metal part of the wheel wells and even where i dynamtted they still still ring/vibrate like crazy. Almost like there is a cavity between the exterior wheel well and the wheel well in the hatch.

I'm in with you. Feel the same. And yes, I think there is a cavity as you describe.

Mecinoid · 03-29-2012, 03:36 AM

Quote:

Originally Posted by secondnissan

Mecinoid, do you feel the rubberized undercoating in the wheel wells helped out with the pebble sounds? I have dynamatted the whole hatch and lined the rear plastic fender liners with dynamatt. I still get the pebble sound though, i would say i reduced it by 20%. Road noise overall is down about 50% though. I tapped on the metal part of the wheel wells and even where i dynamtted they still still ring/vibrate like crazy. Almost like there is a cavity between the exterior wheel well and the wheel well in the hatch.

It dulled it somewhat... Almost to a point you can't hear it. But, you still can. I plan on putting some FatMat behind the plastic liner as another member stated... just waiting for FatMat to show up. It's worth the $20 of Fat Mat to try. Plus there was a couple pieced together areas in the hatch I want to rework so the extra material will allow me to do that. $60 total is a cheap way to minimize / deaden the noise in my opinion. Plus, the stereo does sound better after this treatment.

03-26-2012, 07:24 AM	#2 (permalink)
rebe945 Enthusiast Member Join Date: Mar 2010 Location: middleburg hts, ohio Posts: 491 Drives: 2009 370Z black 7at Rep Power: 17	Results I drove for an hour Sunday and I was simply satisfied with what I did. I used a product bought at Lowes called Frost King and lined my hatch area with 2 layers. Removed the spare and added 1/2 inch of carpet insulation over the insulating product. Everywhere I could add I did. I believe its necessary for more than Dynomat or other products. Think about it. If you could see what insulates a sedan that has no issue. I bet its not Dynomat. too costly for auto makers. Probably just some foam or cloth like products along with rear seating materials. So i left out the spare and folded a small bed comforter and now use the hatch area under the coroplast(the plastic just under the carpeting piece) as an unseen storage compartment. Im done. Im happy. Its a sports car.

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03-25-2012, 03:29 AM	#1 (permalink)
secondnissan Base Member Join Date: May 2011 Location: chicago burbs Posts: 70 Drives: 10 370z 7at Rep Power: 16	Mecinoid, do you feel the rubberized undercoating in the wheel wells helped out with the pebble sounds? I have dynamatted the whole hatch and lined the rear plastic fender liners with dynamatt. I still get the pebble sound though, i would say i reduced it by 20%. Road noise overall is down about 50% though. I tapped on the metal part of the wheel wells and even where i dynamtted they still still ring/vibrate like crazy. Almost like there is a cavity between the exterior wheel well and the wheel well in the hatch.