Cabin noise

37Z · 02-19-2011, 07:37 AM

Quote:

Originally Posted by boomboom

it takes that long to install dynamat!! damn! is there a sticky on doing this yet?

See SilNik's video sticky located in the audio section.

ocfoilist · 03-29-2011, 04:24 PM

I'm afraid I don't really understand the logic that this kind of ambient noise is a positive thing and that people shouldn't be interested in sound dampening their Z's. While I agree that the sound of a beautiful engine or an aggressive exhaust can be pleasant to hear, I don't think the majority of Z owners relish the sound of tires slapping the pavement. To me, tire roar is an unpleasant sound that makes it hard to have a conversation in the car or listen to music and after a 6 hour road trip, it can get pretty irritating. And let's be honest, it's not rocket science to make a quieter cabin environment.

To that end, it isn't particularly difficult to install sound dampening material, nor does it add an excessive amount of weight to the car. Adding Dynamat to the cargo area, floor and doors added a whopping 30 lbs to my 3,200 lb vehicle. Adding my weight pushes it up to almost 3,400 lbs and I can't see how 30 lbs is going to make any significant difference to the performance. I track my Z fairly regularly and I had it on the track both before and after the dampening. I felt absolutely no difference and would be very surprised to find any objective research that shows 30 lbs. slowing the car down enough to feel.

I also don't think that putting a bit of sound dampening material takes away from the "sports car" feel of the Z. I intentionally did not dampen the firewall and so I can still hear the engine, which is nice. Although the dampening did not eliminate the road noise, it did help to reduce it. It's a shame that Nissan chose not to add ANY dampening material to the vehicle. Regardless of a person's individual tolerance to this kind of noise, the road roar clearly irritates a large segment of the Z community. Given a choice between a 370 with no dampening and lots of road noise and a Z that is 30 lbs or so heavier but has less tire roar, I'll take the second option any day. I can't hear the road noise on the track, but my Z is also my daily driver and that accounts for far more time in the driver's seat.

dwntwnall4u · 03-29-2011, 11:28 PM

Well said.

Xander117 · 03-30-2011, 08:13 AM

Quote:

Originally Posted by ocfoilist

I'm afraid I don't really understand the logic that this kind of ambient noise is a positive thing and that people shouldn't be interested in sound dampening their Z's. While I agree that the sound of a beautiful engine or an aggressive exhaust can be pleasant to hear, I don't think the majority of Z owners relish the sound of tires slapping the pavement. To me, tire roar is an unpleasant sound that makes it hard to have a conversation in the car or listen to music and after a 6 hour road trip, it can get pretty irritating. And let's be honest, it's not rocket science to make a quieter cabin environment.

To that end, it isn't particularly difficult to install sound dampening material, nor does it add an excessive amount of weight to the car. Adding Dynamat to the cargo area, floor and doors added a whopping 30 lbs to my 3,200 lb vehicle. Adding my weight pushes it up to almost 3,400 lbs and I can't see how 30 lbs is going to make any significant difference to the performance. I track my Z fairly regularly and I had it on the track both before and after the dampening. I felt absolutely no difference and would be very surprised to find any objective research that shows 30 lbs. slowing the car down enough to feel.

I also don't think that putting a bit of sound dampening material takes away from the "sports car" feel of the Z. I intentionally did not dampen the firewall and so I can still hear the engine, which is nice. Although the dampening did not eliminate the road noise, it did help to reduce it. It's a shame that Nissan chose not to add ANY dampening material to the vehicle. Regardless of a person's individual tolerance to this kind of noise, the road roar clearly irritates a large segment of the Z community. Given a choice between a 370 with no dampening and lots of road noise and a Z that is 30 lbs or so heavier but has less tire roar, I'll take the second option any day. I can't hear the road noise on the track, but my Z is also my daily driver and that accounts for far more time in the driver's seat.

I think a lot of people are lost in the fact of what a true sports car is. I dont think most view it has a positive thing, but something that comes along with a vehicle in this realm.In the sports car realm a mere "30lbs" is a lot when you are trying to shave wieght everywhere you can. Power to wieght is what we are talking about 30-50 lbs could be a 5-6 horsepower loss. I know you are going to laugh at 5-6 horsepower but hey you buy this type of car to squeeze everything you can out of it. In terms of horsepower, everything is about wieght.

It amazes me that people buy these cars and expecting for the money (in truth these are cheap sports cars) they pay to get everything in one package. There is an infiniti that boasts much of what you are looking for with the same engine and a back seat. Which seems a much more practical option for many of the complaints Ive seen an read about. I mean look at the Ferrari F40 (I am in no way comparing our car to it in any other way than it was also a production car), for the money you paid you know what you got? A/C.... No door handles, no carpet, no stereo *it did have an oil cooler

" I dont know of any car designer who was designing a car built for speed and handling that would throw "cabin noise" high on the concern list.

I think you have to remember who a lot of your audience is here. Though there are some daily driver stock guys here, a lot of people here bought these cars to see what they could get out of them. A fun afforadable most bang for your buck sports car. So when you say people seem to think road noise is a positive issue, they arent they view it as an acceptable issue. I mean this isnt a personal attack, more of a defense of the people who dont mind the road noise. You said it yourself its easy to add, so if it bothers someone so much that they are having buyers remorse maybe a little more research or a few more test drives should of been on the menu.

My 2 cents, opinions are like @55holes, and all that jazz....

onzedge · 03-30-2011, 09:56 AM

Quote:

Originally Posted by Xander117

I think a lot of people are lost in the fact of what a true sports car is. I dont think most view it has a positive thing, but something that comes along with a vehicle in this realm.In the sports car realm a mere "30lbs" is a lot when you are trying to shave wieght everywhere you can. Power to wieght is what we are talking about 30-50 lbs could be a 5-6 horsepower loss. I know you are going to laugh at 5-6 horsepower but hey you buy this type of car to squeeze everything you can out of it. In terms of horsepower, everything is about wieght.

It amazes me that people buy these cars and expecting for the money (in truth these are cheap sports cars) they pay to get everything in one package. There is an infiniti that boasts much of what you are looking for with the same engine and a back seat. Which seems a much more practical option for many of the complaints Ive seen an read about. I mean look at the Ferrari F40 (I am in no way comparing our car to it in any other way than it was also a production car), for the money you paid you know what you got? A/C.... No door handles, no carpet, no stereo *it did have an oil cooler

" I dont know of any car designer who was designing a car built for speed and handling that would throw "cabin noise" high on the concern list.

I think you have to remember who a lot of your audience is here. Though there are some daily driver stock guys here, a lot of people here bought these cars to see what they could get out of them. A fun afforadable most bang for your buck sports car. So when you say people seem to think road noise is a positive issue, they arent they view it as an acceptable issue. I mean this isnt a personal attack, more of a defense of the people who dont mind the road noise. You said it yourself its easy to add, so if it bothers someone so much that they are having buyers remorse maybe a little more research or a few more test drives should of been on the menu.

My 2 cents, opinions are like @55holes, and all that jazz....

Perfectly stated.

Dwight Frye · 03-30-2011, 06:39 PM

I have said it before, and the 370Z is a GT. It should be comfortable on long cruises and the high noise level detracts from that substantially. And I don't mean big Lexus, BMW or Mercedes comfortable and quiet, but it could be much quieter than it is without affecting it's performance by enough that anyone who isn't tracking it at 9/10th's would ever know.
Nissan failed at something that was an easy design parameter. A 300 mile cruise would be much more fun if you could hear the stereo better and not have to practically yell to speak with your passenger, or yell to use the built in Bluetooth and have the person on the other end ask if you are driving a convertible with the top down.

LunaZ · 03-30-2011, 06:56 PM

Quote:

Originally Posted by Dwight Frye

Nissan failed at something that was an easy design parameter.

Everyone in this thread bought one, nonetheless.
Nissan succeeded by saving themselves the expense of adding noise dampening materials and people still bought the car anyway. On top of that, they gave you the option to add it yourself if you so desired!

pbs370z · 04-01-2011, 06:51 PM

This thread is to talk about how to reduce the noise inside the car. If you're happy with the noise level, then fine. You're a happy camper. For those of us who aren't happy with the noise level, we're (many of us) are going to try to reduce it and we want to know all the techniques and info available to do so. If you don't think this car is noisy inside then this isn't the thread for you. Find another thread!

P.S. I just got finished with Dyanamatting the rear hatch area and also some Luxury Liner Pro over some key areas that sound like a tin drum when you tap on them. Noise level is definitely better. Not satisfied yet though. I plan to do the doors next.

RiCharlie · 04-02-2011, 04:29 PM

Quote:

Originally Posted by pbs370z

This thread is to talk about how to reduce the noise inside the car. If you're happy with the noise level, then fine. You're a happy camper. For those of us who aren't happy with the noise level, we're (many of us) are going to try to reduce it and we want to know all the techniques and info available to do so. If you don't think this car is noisy inside then this isn't the thread for you. Find another thread!

P.S. I just got finished with Dyanamatting the rear hatch area and also some Luxury Liner Pro over some key areas that sound like a tin drum when you tap on them. Noise level is definitely better. Not satisfied yet though. I plan to do the doors next.

When you do the doors you will really notice a difference. The installers were surprised to find NO sound dampening at all in the doors! I only wish I knew how do do this myself as I have the hatch, trunk and doors done and so far it has cost me $1200...and I would still like to do the floor..

ocfoilist · 04-02-2011, 05:44 PM

That's what surprised me. Nissan put NO sound dampening on this car at all. I do understand what people are saying about "buy a sports car, be prepared for a lot of road noise", but with the technology of today, it's really not hard to get a great sports car that is also not unnecessarily burdened with tire noise and a cacophony of rock & pebble sounds. As a person that does track their vehicle from time to time, I can tell you that (imho) 30 lbs worth of sound dampening doesn't make a smack of difference. I challenge anyone to take their Z to the track and quantitatively differentiate the difference in performance between 3,330 lbs and 3.360 lbs. Take a decibel meter and you can differentiate between absolutely no sound dampening and 30 lbs worth of your favorite dampening material.

Guard Dad · 04-02-2011, 06:12 PM

Quote:

Originally Posted by pbs370z

This thread is to talk about how to reduce the noise inside the car. If you're happy with the noise level, then fine. You're a happy camper. For those of us who aren't happy with the noise level, we're (many of us) are going to try to reduce it and we want to know all the techniques and info available to do so. If you don't think this car is noisy inside then this isn't the thread for you. Find another thread!

P.S. I just got finished with Dyanamatting the rear hatch area and also some Luxury Liner Pro over some key areas that sound like a tin drum when you tap on them. Noise level is definitely better. Not satisfied yet though. I plan to do the doors next.

I've said much the same thing in the past, unfortunately many people seem to take it as a personal insult that anyone could possibly find the Z lacking in any area whatsoever. Of course the idea of audio, engine, chassis or body upgrades to their cars is in no way offensive to them!

You are absolutely correct, if you can't make a positive contribution to the thread don't post.

Xander117 · 04-04-2011, 10:07 AM

Quote:

Originally Posted by pbs370z

This thread is to talk about how to reduce the noise inside the car. If you're happy with the noise level, then fine. You're a happy camper. For those of us who aren't happy with the noise level, we're (many of us) are going to try to reduce it and we want to know all the techniques and info available to do so. If you don't think this car is noisy inside then this isn't the thread for you. Find another thread!

P.S. I just got finished with Dyanamatting the rear hatch area and also some Luxury Liner Pro over some key areas that sound like a tin drum when you tap on them. Noise level is definitely better. Not satisfied yet though. I plan to do the doors next.

Sure thing there sport....When people post stuff like this, you cant expect people not to voice their opinion. If you dont want people to voice their opinions then this forum isnt the place for "you".

Mecinoid · 03-28-2012, 10:22 PM

Quote:

Originally Posted by pbs370z

This thread is to talk about how to reduce the noise inside the car. If you're happy with the noise level, then fine. You're a happy camper. For those of us who aren't happy with the noise level, we're (many of us) are going to try to reduce it and we want to know all the techniques and info available to do so. If you don't think this car is noisy inside then this isn't the thread for you. Find another thread!

P.S. I just got finished with Dyanamatting the rear hatch area and also some Luxury Liner Pro over some key areas that sound like a tin drum when you tap on them. Noise level is definitely better. Not satisfied yet though. I plan to do the doors next.

+1.

This thread was started so that those of us that want to quiet their car's cabin down can share our ideas on how to accomplish this. I've done a few things and the car is now livable. It's not as quiet as my Corvette and is about as loud as my Pontiac. All vehicles have mellow performance exhaust in them however, until my FatMat installation the Z was not a great car to go on long trips with my wife. We ended up yelling at each other over the road noise. Now, we are not screaming at each other and can talk at a slighly elevated level but, the car could still use some improvements. Right now, the Z is acceptable and our trips out of town are nice .... we plan on taking this to the next level and making the car one that we don't have to reaise our voices in. That is our ultimate goal. I do not think that is too much to ask for out of a $35-40K sports touring car. Yes, we could have bought a G for a few thousand more however, it just doesn't make our hearts race like the Z car does.

delusional · 03-29-2012, 01:25 AM

I just recently put on my Hankook V12 tires and I must say that they lowered the road noise by a good amount. Compared to the stock tires, these are much quieter and much more comfortable.

03-29-2011, 04:24 PM	#2 (permalink)
ocfoilist Base Member Join Date: Apr 2009 Location: Orange County, CA Posts: 202 Drives: 09 Blue 6m 370zT/S/N Rep Power: 17	I'm afraid I don't really understand the logic that this kind of ambient noise is a positive thing and that people shouldn't be interested in sound dampening their Z's. While I agree that the sound of a beautiful engine or an aggressive exhaust can be pleasant to hear, I don't think the majority of Z owners relish the sound of tires slapping the pavement. To me, tire roar is an unpleasant sound that makes it hard to have a conversation in the car or listen to music and after a 6 hour road trip, it can get pretty irritating. And let's be honest, it's not rocket science to make a quieter cabin environment. To that end, it isn't particularly difficult to install sound dampening material, nor does it add an excessive amount of weight to the car. Adding Dynamat to the cargo area, floor and doors added a whopping 30 lbs to my 3,200 lb vehicle. Adding my weight pushes it up to almost 3,400 lbs and I can't see how 30 lbs is going to make any significant difference to the performance. I track my Z fairly regularly and I had it on the track both before and after the dampening. I felt absolutely no difference and would be very surprised to find any objective research that shows 30 lbs. slowing the car down enough to feel. I also don't think that putting a bit of sound dampening material takes away from the "sports car" feel of the Z. I intentionally did not dampen the firewall and so I can still hear the engine, which is nice. Although the dampening did not eliminate the road noise, it did help to reduce it. It's a shame that Nissan chose not to add ANY dampening material to the vehicle. Regardless of a person's individual tolerance to this kind of noise, the road roar clearly irritates a large segment of the Z community. Given a choice between a 370 with no dampening and lots of road noise and a Z that is 30 lbs or so heavier but has less tire roar, I'll take the second option any day. I can't hear the road noise on the track, but my Z is also my daily driver and that accounts for far more time in the driver's seat. mmmm likes this. __________________ Proud owner of a new 167.2 inch, 3278 lb baby Z! Stillen CBE & G3 Intake // Stillen Lightweight pulley // Stillen Oil Cooler // Goodridge Braided Stainless Steel Brake Lines // ACT HDSS Clutch& Alum Flywheel

03-29-2011, 11:28 PM	#3 (permalink)
dwntwnall4u Base Member Join Date: Dec 2010 Location: San Diego/ Hawaii Posts: 158 Drives: 2011 370Z AT,S,T,PW Rep Power: 15	Well said. __________________ Working my *ss off for a GTM Rotrex SC to go with my 2006 URD Rotrex SC 4x4 Tacoma.

04-01-2011, 06:51 PM	#8 (permalink)
pbs370z Base Member Join Date: Jul 2010 Location: Near Portland, OR Posts: 92 Drives: '10 370Z, Sport Pkg Rep Power: 3371	This thread is to talk about how to reduce the noise inside the car. If you're happy with the noise level, then fine. You're a happy camper. For those of us who aren't happy with the noise level, we're (many of us) are going to try to reduce it and we want to know all the techniques and info available to do so. If you don't think this car is noisy inside then this isn't the thread for you. Find another thread! P.S. I just got finished with Dyanamatting the rear hatch area and also some Luxury Liner Pro over some key areas that sound like a tin drum when you tap on them. Noise level is definitely better. Not satisfied yet though. I plan to do the doors next. luisch88 likes this.

04-02-2011, 05:44 PM	#10 (permalink)
ocfoilist Base Member Join Date: Apr 2009 Location: Orange County, CA Posts: 202 Drives: 09 Blue 6m 370zT/S/N Rep Power: 17	That's what surprised me. Nissan put NO sound dampening on this car at all. I do understand what people are saying about "buy a sports car, be prepared for a lot of road noise", but with the technology of today, it's really not hard to get a great sports car that is also not unnecessarily burdened with tire noise and a cacophony of rock & pebble sounds. As a person that does track their vehicle from time to time, I can tell you that (imho) 30 lbs worth of sound dampening doesn't make a smack of difference. I challenge anyone to take their Z to the track and quantitatively differentiate the difference in performance between 3,330 lbs and 3.360 lbs. Take a decibel meter and you can differentiate between absolutely no sound dampening and 30 lbs worth of your favorite dampening material. __________________ Proud owner of a new 167.2 inch, 3278 lb baby Z! Stillen CBE & G3 Intake // Stillen Lightweight pulley // Stillen Oil Cooler // Goodridge Braided Stainless Steel Brake Lines // ACT HDSS Clutch& Alum Flywheel

03-29-2012, 01:25 AM	#14 (permalink)
delusional Track Member Join Date: Feb 2011 Location: NewYork Posts: 968 Drives: 09 PG T/S/N 7AT Rep Power: 16	I just recently put on my Hankook V12 tires and I must say that they lowered the road noise by a good amount. Compared to the stock tires, these are much quieter and much more comfortable. __________________ 2009 Platinum Graphite Touring [ Sport Package ¦¦ Navigation ¦¦ 7 Speed Automatic ] [ Berk ¦ H&R ¦ ONEighty ¦ K&N ¦ Stillen ¦ Eibach ¦ Cobb ¦ Ichiba ¦ Hankook ]

03-30-2011, 06:39 PM	#6 (permalink)
Dwight Frye Enthusiast Member Join Date: Jul 2009 Location: Occupied California Posts: 423 Drives: '09 Tour/Sport/6MT Rep Power: 17	I have said it before, and the 370Z is a GT. It should be comfortable on long cruises and the high noise level detracts from that substantially. And I don't mean big Lexus, BMW or Mercedes comfortable and quiet, but it could be much quieter than it is without affecting it's performance by enough that anyone who isn't tracking it at 9/10th's would ever know. Nissan failed at something that was an easy design parameter. A 300 mile cruise would be much more fun if you could hear the stereo better and not have to practically yell to speak with your passenger, or yell to use the built in Bluetooth and have the person on the other end ask if you are driving a convertible with the top down.

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