Fender Coating to reduce noise

SoCal 370Z · 03-01-2009, 11:49 AM

You will need to get some thickness to the material for it work. Line-X charges approximately $150 for this to be accomplished as they need to pep and take the wheels off. However, you will want a material that remains flexible so that if it ever does dislodge in a large piece it does not wreak havoc inside your fender well; products like Rhino have been reported to come of in large sheets. Dupli-Color Truck Bed Coating is another thought for those who want to use a truck bed lining material, but I would apply it via the spray gun and air compressor (watch their video). Second Skin Spectrum can also be used as an undercoating. I have not got around to coating our Z yet, but it is will done.

The issue is that the inside of the rear fender wells are like a drum; you need simply take your fingers and you can literally tap out a tune on the wells. There is a thin factory undercoating, but it is hard in nature, and adds to the noise. The ultimate will probably be a sandwich solution which will mean removing the rear interior pieces; no so sure I am willing to go to that extent. In a way, I am surprised that Nissan did not use their acoustic engineers to alleviate this issue, or to better address it; 2010 model?

frost · 03-01-2009, 11:52 AM

Too bad on the spray, that would have been nice and easy. Post up any further developments though!

shumby · 03-01-2009, 11:53 AM

you guys are funny g owners are removing the matting in their wheel whells to reduce weight. lol

SoCal 370Z · 03-01-2009, 11:59 AM

Quote:

Originally Posted by shumby

you guys are funny g owners are removing the matting in their wheel whells to reduce weight. lol

It's a matter of the Z being a daily driver versus a track car.

frost · 03-01-2009, 12:02 PM

Quote:

Originally Posted by SoCal 370Z

It's a matter of the Z being a daily driver versus a track car.

pbs370z · 02-12-2011, 10:58 PM

Quote:

Originally Posted by shumby

you guys are funny g owners are removing the matting in their wheel whells to reduce weight. lol

I agree with others here that the wheelwell noise is excessive and quite annoying on certain road surfaces (shame on Nissan for cheaping out). The guys that are funny are the ones removing any sound absorption materials. 10 - 20 lbs ain't gonna make any noticeable difference in the performance of a 3000 lb car.

shumby · 03-01-2009, 12:28 PM

^^^^ nice go with the pic.

kacz07 · 03-01-2009, 01:42 PM

Does the sound really make you suffer that much? I think that's a little silly. Should be the least of your worries.

frost · 03-01-2009, 01:59 PM

Quote:

Originally Posted by kacz07

Does the sound really make you suffer that much? I think that's a little silly. Should be the least of your worries.

They don't like the sound, they are trying to fix it. What's the big deal? Maybe it wouldn't bother you, but it obviously bothers someone else *shrug*

Minicobra1 · 03-01-2009, 05:02 PM

Quote:

Originally Posted by kacz07

Does the sound really make you suffer that much? I think that's a little silly. Should be the least of your worries.

Actually it doesn't bother me that much, but what bothers me more is that I've had to explain to several people what that tinking, clicking sound is coming from the back. I've had at least 3 passengers comment on the sound. Most of the times its not that bad, but on certain streets, streets that I never even knew there was loose gravel, because I never heard it on my other 2 cars, is very pronounced on the 370z.
There is one particular street about 1/4 mile driving up to my work that it is really noticable, I've driven down this street literally thousands of times in my G35, Mini Cooper S & Armada and never knew there was any kind of loose gravel on the road until I traveled down it in the 370Z. Sounds like i'm being pelted by a sandstorm.
I know where it is coming from, there is one parking lot that needs to be re-paved, the cars and trucks that are leaving from there are just tracking it out onto the street.

On a good note, I went into work this morning and the rubber treatment that I did make it less noticeable, I'm going to say that it's about a 25% reduction in sound, but still not like any of the other cars that I drive, so just a bit more work to get it there.

takimbe · 03-01-2009, 10:55 PM

Definitely interested in hearing the forum's solutions. When i get my car, i hope replacing the head unit and all the speakers will have my music bumping so loud and clear that i wont hear the gravel being kicked around my wheel wells...

dad · 03-01-2009, 03:15 PM

B-Quiet sound deadening material

bkunzi01 · 03-02-2009, 01:04 PM

Hey has anyone tried laying a sound deadener mat on the inside of the car. I would think that would cut down the road noise considerably. I will be doing that some time this week when I can get through the 2 feet of snow to my garage lol...il keep you guys posted.

cheshirecat · 03-02-2009, 03:47 PM

Just strip out the hatch area and use some dynamat on the wheel wells.

SoCal 370Z · 03-03-2009, 01:46 AM

You can hear the noise we are talking about in this video:

[YOUTUBEHQ]O40HNiWW2RQ[/YOUTUBEHQ]

03-01-2009, 11:49 AM	#1 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 35	You will need to get some thickness to the material for it work. Line-X charges approximately $150 for this to be accomplished as they need to pep and take the wheels off. However, you will want a material that remains flexible so that if it ever does dislodge in a large piece it does not wreak havoc inside your fender well; products like Rhino have been reported to come of in large sheets. Dupli-Color Truck Bed Coating is another thought for those who want to use a truck bed lining material, but I would apply it via the spray gun and air compressor (watch their video). Second Skin Spectrum can also be used as an undercoating. I have not got around to coating our Z yet, but it is will done. The issue is that the inside of the rear fender wells are like a drum; you need simply take your fingers and you can literally tap out a tune on the wells. There is a thin factory undercoating, but it is hard in nature, and adds to the noise. The ultimate will probably be a sandwich solution which will mean removing the rear interior pieces; no so sure I am willing to go to that extent. In a way, I am surprised that Nissan did not use their acoustic engineers to alleviate this issue, or to better address it; 2010 model? Last edited by SoCal 370Z; 03-01-2009 at 12:01 PM.

03-01-2009, 11:53 AM	#3 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 46 Posts: 6,288 Drives: your sister Rep Power: 238	you guys are funny g owners are removing the matting in their wheel whells to reduce weight. lol __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

03-01-2009, 12:28 PM	#7 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 46 Posts: 6,288 Drives: your sister Rep Power: 238	^^^^ nice go with the pic. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

03-01-2009, 03:15 PM	#12 (permalink)
dad Grand Prix of Endurance Join Date: Nov 2008 Location: Tennessee Posts: 3,476 Drives: Mulsanne Straight Rep Power: 27	B-Quiet sound deadening material __________________ We can do without any article of luxury we have never had; but once obtained, it is not in human nature to surrender it voluntary.

03-03-2009, 01:46 AM	#15 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 35	Hear the Noise in this Video You can hear the noise we are talking about in this video: [YOUTUBEHQ]O40HNiWW2RQ[/YOUTUBEHQ] Last edited by SoCal 370Z; 03-03-2009 at 08:54 PM.

03-01-2009, 01:42 PM	#8 (permalink)
kacz07 Base Member Join Date: Nov 2008 Location: EB,NJ Posts: 42 Drives: 06 350z SS 6mt Rep Power: 0	Does the sound really make you suffer that much? I think that's a little silly. Should be the least of your worries.

03-01-2009, 10:55 PM	#11 (permalink)
takimbe Base Member Join Date: Feb 2009 Location: San Diego, CA Posts: 223 Drives: 09' PG 370Z w/SP Rep Power: 266	Definitely interested in hearing the forum's solutions. When i get my car, i hope replacing the head unit and all the speakers will have my music bumping so loud and clear that i wont hear the gravel being kicked around my wheel wells...

03-02-2009, 01:04 PM	#13 (permalink)
bkunzi01 Base Member Join Date: Jan 2009 Location: NY Age: 40 Posts: 66 Drives: 2009 370z Rep Power: 187	Hey has anyone tried laying a sound deadener mat on the inside of the car. I would think that would cut down the road noise considerably. I will be doing that some time this week when I can get through the 2 feet of snow to my garage lol...il keep you guys posted.

03-02-2009, 03:47 PM	#14 (permalink)
cheshirecat A True Z Fanatic Join Date: Jan 2009 Location: Florida Posts: 1,428 Drives: N54 135i Rep Power: 294	Just strip out the hatch area and use some dynamat on the wheel wells.

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