Cabin noise

RiCharlie · 02-05-2012, 07:57 AM

Quote:

Originally Posted by daemon1957

Dynamat Extreme weighs .45lbs./sq.ft. I plan on using 36 sq.ft. or 16.2 lbs. of Dynamat Extreme to cover my hatch and doors.

i didnt think the stuff was as heavy as some think..i got mine done and i cant sense any change in performance..but its a lot more pleasant to drive..Actually i would not mind a bit more exhaust noise,,just a bit more to provide an added growl..

Guard Dad · 02-05-2012, 12:24 PM

Quote:

Originally Posted by Bonzo

FINALLY, some real scientific numbers!!!!

No, seriously, just your own observations about the pebble noise specifically (not road noise or tire noise etc) would be great.

Thanks ---- Bonzo

Check out my prior posts (from the beginning) on the topic, they should answer most of your questions. PM me if I can be of further assistance.

pf62 · 02-05-2012, 02:10 PM

Quote:

Originally Posted by brucelidat

Everyone says Dynamat is heavy. Anyone know just how much weight it would add for the hath only and for the hatch and doors?

I just weighed the 36 sq ft box of dynamat extreme, 21lbs. Out of the 9 pieces in the box you might use about 6 for the entire hatch area. The rest would probably do the doors.

370ZilverZ · 02-05-2012, 05:18 PM

I started my Dynamat install today. It took me over 4 hours just to do the part in front of the shock towers. I used a little more than 10 sq.ft. to cover that area. There is a bit more trim to remove doing this. I even removed the electronic boxes on the floor and Dynamated under them. I will post a few pictures of the job done so far in my journal.

Guard Dad · 02-05-2012, 09:13 PM

Noise reduction will be about 2-3 dba. It doesn't sound like much but 3 dba is about a 50% noise reduction so a 2-3 dba reduction will be quite noticeable.

The sand and pebble sounds will be greatly reduced, conversation will be much easier and you enjoy your audio system much more.

AndyR1 · 02-05-2012, 09:50 PM

I read all the way through and would also share my experiences regarding tyre noise and wheel wells issue.

I have driven the 370Z with Stillen Exhaust and air intakes with the same 20" alloys with 3 different set of tyres:
Falken FK452...oh my god, that is not only a cheap tyre but also so noisy that the sound level at 65mph on a highway is more than annoying even with an Stillen exhaust (on demonstrator car only)
Bridgestone Potenza RE050A...I think that's the same like on the stock alloys. Well, still little bit too noisy to be considered as good (5 days on my car. because I want a wider back tyre I let my Nissan dealer change the tyre brand)
Last but not least: Pirelli P Zero...this tyre is not only more expensive than the Bridgestone and much more expensive than the Falken, it is also much more comfortable to drive and the street noise is now at an very acceptable level for me. Sure I don't like a quiet 370Zzzzzzzzz car therefore we have added Stillen exhaust and intake and even the engine makes a nice deep sound, but the uncomfortable roaring of just some dam cheap tyres is just gone. Sure it will never be sooooo quiet but sorry, that is a sports car and not a limousine.

But in my opinion that is already a big improvement compared to the noisy stock or even Falken tyres....so change your tyres and ask your tyre dealer for a comfortable and quiet one....if not, just bring back the noisy ones.

Second and still annoying noise from the outside of our car is indeed the pebble noise when just picking up each stone one by one or even as machine-gun fire passing some new tared roads...

Nissan's 370Z GT has some suspension modification but they also have done some "extra underbody sound insulation"
Someone has some information about this? Because if they add some extra sound insulation stuff each Nissan dealer should be aware of and could give us some extra parts/info????

I like this topic even sound is like colours a matter of taste so everybody has different feeling and intention with that! But I drive a 99 Yamaha R1 as well so I never ever hear anything else than exhaust, airbox or the engine...and that's good

shaun66 · 02-05-2012, 10:33 PM

Not to related to cabin noise, but does anyone know how to stop that annoying headliner rattle right by the drivers side window?

Guard Dad · 02-06-2012, 02:45 AM

Quote:

Originally Posted by AndyR1

I read all the way through and would also share my experiences regarding tyre noise and wheel wells issue.

I have driven the 370Z with Stillen Exhaust and air intakes with the same 20" alloys with 3 different set of tyres:
Falken FK452...oh my god, that is not only a cheap tyre but also so noisy that the sound level at 65mph on a highway is more than annoying even with an Stillen exhaust (on demonstrator car only)
Bridgestone Potenza RE050A...that is I think the same like the stock ones get on the factory alloys. Well, still little bit too noisy to be considered as good (5 days on my car. because I want a wider back tyre I let my Nissan dealer change the tyre brand)
Last but not least: Pirelli P Zero...this tyre is not only more expensive than the Brifgestone and much more expensive than the Falken, it is also much more comfortable to drive and the street noise is now at an very acceptable level for me. Sure I don't like a quiet 370Zzzzzzzzz car therefore we have added Stillen exhaust and intake and even the engine makes a nice sound, but the uncomfortable roaring of just same dam cheap tyres is a clear NO.

But in my opinion that is already a big improvement compared to the noisy stock or even Falken tyres....so change your tyres and ask your tyre dealer for a comfortable and quiet one....if not, just bring back the noisy ones.

Second and still annoying noise from the outside of our car is indeed the pebble noise when just picking up each stone one by one or even as machine-gun fire passing some new tared roads...

Nissan's 370Z GT has some suspension modification but they also have done some "extra underbody sound insulation"
Someone has some information about this? Because if they add some extra sound insulation stuff each Nissan dealer should be aware of and could give us some extra parts/info????

I like this topic even sound is like colours a matter of taste so everybody has different feeling and intention with that! But I drive a 99 Yamaha R1 as well so I never ever hear anything else than exhaust, airbox or the engine...and that's good

Pebble noise: I've said it before but it bears repeating, Dynamat is the your friend.

370ZilverZ · 02-06-2012, 08:19 AM

No tire out there is going to lessen the road debris noise. If the Dynamat isn't enough, I'll spray some rubberized undercoating in the wheel well outside which should be more than enough to stop the tings and pings from everything the tires kick up into the wheel wells.
Tire and road surface noise may still be another issue to tackle. If it is, then I think I will try out a set of Continental Extreme DWS. I have heard good reviews. Since I have less than 400 miles on mine, it is not what I want to do. After a long road trip I have planned for later this month, I may change my mind on it though and change then out.

RiCharlie · 02-06-2012, 09:01 AM

Quote:

Originally Posted by daemon1957

No tire out there is going to lessen the road debris noise. If the Dynamat isn't enough, I'll spray some rubberized undercoating in the wheel well outside which should be more than enough to stop the tings and pings from everything the tires kick up into the wheel wells.
Tire and road surface noise may still be another issue to tackle. If it is, then I think I will try out a set of Continental Extreme DWS. I have heard good reviews. Since I have less than 400 miles on mine, it is not what I want to do. After a long road trip I have planned for later this month, I may change my mind on it though and change then out.

I am getting those Contis tomorrow..will keep you posted..

DrEvil · 02-06-2012, 09:12 AM

Quote:

Originally Posted by shaun66

Not to related to cabin noise, but does anyone know how to stop that annoying headliner rattle right by the drivers side window?

I've got the same noise. What is it?

Red__Zed · 02-06-2012, 09:21 AM

Quote:

Originally Posted by shaun66

Not to related to cabin noise, but does anyone know how to stop that annoying headliner rattle right by the drivers side window?

If anybody figures it out, please post up a solution.

370ZilverZ · 02-06-2012, 10:08 AM

Quote:

Originally Posted by RiCharlie

I am getting those Contis tomorrow..will keep you posted..

I'd like to hear your opinion on the change of the tires. Do you have the Bridgestones now?

edub370 · 02-06-2012, 10:23 AM

Roommate has conti's on his sti... lets just say that they are less than quite...

kenchan · 02-06-2012, 02:23 PM

Quote:

Originally Posted by edub370

Roommate has conti's on his sti... lets just say that they are less than quite...

huh, my DW's are very quiet...

02-05-2012, 05:18 PM	#274 (permalink)
370ZilverZ A True Z Fanatic Join Date: Dec 2011 Location: DFW, TX Age: 66 Posts: 2,321 Drives: '11 BMW Z4 Rep Power: 18	I started my Dynamat install today. It took me over 4 hours just to do the part in front of the shock towers. I used a little more than 10 sq.ft. to cover that area. There is a bit more trim to remove doing this. I even removed the electronic boxes on the floor and Dynamated under them. I will post a few pictures of the job done so far in my journal. __________________ 370ZilverZ Journal BMW Z4

02-05-2012, 09:13 PM	#275 (permalink)
Guard Dad Enthusiast Member Join Date: Aug 2010 Location: South Orange County, CA Posts: 422 Drives: 2010 370Z Silver A7 Rep Power: 14	Noise reduction will be about 2-3 dba. It doesn't sound like much but 3 dba is about a 50% noise reduction so a 2-3 dba reduction will be quite noticeable. The sand and pebble sounds will be greatly reduced, conversation will be much easier and you enjoy your audio system much more. __________________ 2010 Brilliant Silver, Base w/Sport Package, AT7, Katzkin leather, upgraded audio and lots of Dynamat and a bunch of small stuff.

02-05-2012, 09:50 PM	#276 (permalink)
AndyR1 Base Member Join Date: Sep 2011 Location: New Zealand Posts: 12 Drives: 370Z Stillen Edition Rep Power: 13	I read all the way through and would also share my experiences regarding tyre noise and wheel wells issue. I have driven the 370Z with Stillen Exhaust and air intakes with the same 20" alloys with 3 different set of tyres: Falken FK452...oh my god, that is not only a cheap tyre but also so noisy that the sound level at 65mph on a highway is more than annoying even with an Stillen exhaust (on demonstrator car only) Bridgestone Potenza RE050A...I think that's the same like on the stock alloys. Well, still little bit too noisy to be considered as good (5 days on my car. because I want a wider back tyre I let my Nissan dealer change the tyre brand) Last but not least: Pirelli P Zero...this tyre is not only more expensive than the Bridgestone and much more expensive than the Falken, it is also much more comfortable to drive and the street noise is now at an very acceptable level for me. Sure I don't like a quiet 370Zzzzzzzzz car therefore we have added Stillen exhaust and intake and even the engine makes a nice deep sound, but the uncomfortable roaring of just some dam cheap tyres is just gone. Sure it will never be sooooo quiet but sorry, that is a sports car and not a limousine. But in my opinion that is already a big improvement compared to the noisy stock or even Falken tyres....so change your tyres and ask your tyre dealer for a comfortable and quiet one....if not, just bring back the noisy ones. Second and still annoying noise from the outside of our car is indeed the pebble noise when just picking up each stone one by one or even as machine-gun fire passing some new tared roads... Nissan's 370Z GT has some suspension modification but they also have done some "extra underbody sound insulation" Someone has some information about this? Because if they add some extra sound insulation stuff each Nissan dealer should be aware of and could give us some extra parts/info???? I like this topic even sound is like colours a matter of taste so everybody has different feeling and intention with that! But I drive a 99 Yamaha R1 as well so I never ever hear anything else than exhaust, airbox or the engine...and that's good Last edited by AndyR1; 02-06-2012 at 02:55 AM.

02-06-2012, 08:19 AM	#279 (permalink)
370ZilverZ A True Z Fanatic Join Date: Dec 2011 Location: DFW, TX Age: 66 Posts: 2,321 Drives: '11 BMW Z4 Rep Power: 18	No tire out there is going to lessen the road debris noise. If the Dynamat isn't enough, I'll spray some rubberized undercoating in the wheel well outside which should be more than enough to stop the tings and pings from everything the tires kick up into the wheel wells. Tire and road surface noise may still be another issue to tackle. If it is, then I think I will try out a set of Continental Extreme DWS. I have heard good reviews. Since I have less than 400 miles on mine, it is not what I want to do. After a long road trip I have planned for later this month, I may change my mind on it though and change then out. __________________ 370ZilverZ Journal BMW Z4

02-06-2012, 10:23 AM	#284 (permalink)
edub370 A True Z Fanatic Join Date: May 2011 Location: KCMO Posts: 3,458 Drives: 09 370z S/T 6MT Rep Power: 20	Roommate has conti's on his sti... lets just say that they are less than quite... __________________ 09 370Z ST 6MT//Injen CAI//Greddy CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways 326whp/268tq

02-05-2012, 10:33 PM	#277 (permalink)
shaun66 Track Member Join Date: Mar 2010 Location: n Posts: 837 Drives: MB 370z 7AT Rep Power: 16	Not to related to cabin noise, but does anyone know how to stop that annoying headliner rattle right by the drivers side window?

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