Upholstered firewall reduces noise maybe 30%

[MIteyMT]

Here are a few pics of upholstering the firewall in the general. I used a large 1.5" memory foam mattress cover from walmart ($50) and the tent material found on "arctic oven" tents from Alaska tent and tarp. I also used self adhesive 2" pile on the body, and sewed the 2" hook onto the covers. There is a lot of construction to this, but I got it right on about the first try. The noise reduction was substantial. On my old argo I used a wool blanket, because it was flame retardant. I might use wool on the other side of this firewall, it works well. There are three layers of foam on the left and right pieces, for a total of 4.5", I have no idea if this made it any quieter. I think the key is a layer of foam everywhere, not a thick foam here and there. I also did the area right below the windshield, and that seemed to help too. I am going to carpet the inside soon, and foam the rest of the interior.

[reichstall]

looks good but would ear plugs not be cheaper? just kidding you may want to look at the fire retardent mat drag racer use it comes in a blanket form and proubly be a lot easier to work with also if you wrap the muffler and exhaust manfold you will find a big noise drop.

[MIteyMT]

I have never had much luck wrapping exhaust, what do you suggest?

[spookum]

http://i1239.photobucket.com/albums/ff507/Stonewall387/1983%20Hustler%20950%206x6%20AATV/IMG_0538.jpg

If you look very carefly in the picture, there is insulation for the headers. Just rember to use break clean to get the exhaust really nice and clean. Bet this could be had for not too much money down at napa or carquest.... maybe waley world too. OH, and i robbed the cushions out of two couches so if you need boucoup THICK foam, ya got my digits.

[reichstall]

when i wrapped the pipe and exhaust i got this roll of exhaust cloth i wire wrapped one end and just rolled it around kinda like the harley guys do for the pipe looks the same