Sound deadening/ride quality |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Sound deadening/ride quality |
jmargush |
Sep 26 2022, 05:24 AM
Post
#1
|
Member Group: Members Posts: 460 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176 |
I built my car as an autoxer years ago and never installed carpet or sound deadener after the restoration.
Now as I age and have an opportunity to take a longer trip in the car I am looking for a little more "comfort" in the car. Question is how much will carpet and/or sound deadening improve the road noise? The back pad has been removed and there is sound deadener and felt covering the firewall currently. Curious as to what you all might have experienced or recommend. I am also thinking about dialing back the suspension setup for the long trip. |
Superhawk996 |
Sep 26 2022, 07:46 AM
Post
#2
|
914 Guru Group: Members Posts: 5,875 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
I have been involved in data analysis and modeling to correlate ride quality with 3rd party quality metrics like Consumer Reports, JD Power, OEM customer satisfaction surveys.
Sound is a highly correlated variable even though it has no direct effect on ride quality. That is to say that most people if they perceive that bumps are “loud” they are also perceive the bump to be more severe than it really is as measured by seat track accelerometers. So - a quieter car is perceived to ride better than an equivalent car that is noisy. Addition of constrained layer damping like Dynamat will get you a huge improvement over what you have (nothing). This treatment will reduce the structurally transmitted noise low frequency noise <100 Hz. Addition of carpet and a back pad over Dynamat will reduce the higher frequency airborne noise above 100 Hz. You really want both types of noise reduction treatments since they each affect different noise frequency ranges. Don’t forget the felt liner on the targa top - that big fiberglass panel is a noise reflector. Dialing back your suspension from an AX setup would also be a significant improvement for long trips. |
Lo-Fi Version | Time is now: 31st May 2024 - 08:39 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |