Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Re: Insulating a hard-top TJ for road noise?
Borrow a buddy's soft top CJ and take her for a ride. After ten minutes on the highway she'll be very happy to get back in the TJ. [img]images/icons/smile.gif[/img]
Or experiment. Carpet is a very good sound deadener for places where water isn't present, and old fashioned undercoat is moderately good if water is a problem. Glue some pieces of carpet where you think it might help. If it does, pull the carpet and spray on some undercoat.
There is a foam material called Sonex that is designed for sound deadening. It's used in sound studios and TV sets. We lined the walls in a room full of computer hardware and dropped the noise level dramatically. It looks a little like an egg carton, but it's very sophisticated stuff. Also pricey, but gluing a panel in as a headliner will soak up a lot of the mid- and upper-frequency noise.