[QUOTE]Originally posted by chipperman
Sorry for not posting sooner. I'm going to have a double neck fusion in January so I've been a little occupied with that.

 

ouch.

 

Since it seems there are some experts on noise here, I will ask my question. I have a lot of wind noise coming from where the top meets the windshield - but you can't feel any air coming in. Is there something I can do do fix this? At 70mph on the freeway, it's almost enough to give you a headache if you are in the car for long enough.

Thanks!

 

Shannon,

Your strykers are probably worn (what the latches hook onto) I had mine replaced under warranty. Not sure of the cost if you had to pay for it tho.

 

Hmmm, wonder if that's what it is then. Wonder where I could get those parts. Does anyone know? And, does anyone know how much they cost? Thanks!

 

Shin Etsu may help. Have you tried that?

 

Chipperman,

Thanks for all the research you have done on noise reduction for the car. This is a area of great interest to me. I usually ride with ear plugs in attempting to save my hearing! A total reduction of 10-12dB would be outstanding. I sincerely hope your neck operation is successful and your recovery is swift. Is there anything I could do to help put the kit together or finalize some testing while you are taking care of this? I am an Electrical Engineer with an audio passion and would be glad assist in this.

 

I sound proofed my car yesturday using the information in this discussion. Good results, but not the convertible top well vibration is more noticable.

I used Cascade products as these were the only things I could find in small quantities and not too thick. I also used the polyester batting.

I took out the convertible top tray and put damping everywhere it touched plastic or metal. Now, with the overall reduction in sound, the vibration of this panel and the one at the back above it is more noticable. The bottom of the tray is completely covered with felt from the factory.

You can touch it and feel the vibrations. I don't think it's letting noise through gaps or rubbing on other panels. I think it is a vibration noise making instrument. That is to say, so long as it vibrates, I think it will make noise. I don't know what Chipperman is planning to use. I'm at a loss. It seems like we'd need some materials that could actually stop vibrations from carrying through to the plastic completely. Is there anything like this that will adhere to the tray?

If the pillow idea works by pushing the tray up and preventing it's vibration, maybe there could be a more elegant approach to this. Maybe something that goes between the tray and gas tank hump? It's really bugging me now.

The noise coming from the trunk area is greatly reduced. Fender noise is slightly reduced. I only used batting deep in above them. I used some damping material and mostly their V5 that joins foam with a rubber layer. I used this in the tool well, wall, and trunk floor. I also used it under the spare tire and on the other side also. I supplemented the felt over the gas tank with the felt I removed from the air vents. I also stuffed batting all around, leaving space on each side for air (and sound) to travel to the cabin.

By the way, though the Cascade product was the thinnest stuff I could find, it's not thin enough. Not all of the clips would go back in. fortunately I was putting in a cargo net, so it's plugs help things together well.

 

Great work. =)
I am also very instested in purchasing a kit.

 

[QUOTE]Originally posted by Asura
Not to mention that police can hear you coming a mile away.