Filling Up The Roll Bar, ...with expansion foam... |
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Filling Up The Roll Bar, ...with expansion foam... |
McMark |
Jun 24 2003, 10:31 PM
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#1
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I've read a bit about sound deadening and one technique is to fill hollow spaces with expanding foam to kill resonance. I was thinking of doing this to my roll bar top and maybe the sides. Knocking on the top shows how high of resonance it has. I was think that if I drilled some hols 8-10 inches apart on the underside of the roll bar and sprayed in the foam I could kill the resonance and just fill in the holes. I'm not sure I could weld them since the foam is in there, but maybe solder or lead them in, or maybe just bondo?
What's your reaction to this? Good or bad idea? |
SirAndy |
Jun 24 2003, 10:42 PM
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#2
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Resident German Group: Admin Posts: 41,688 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
the factory already set the car up for this. they all come with holes in the right places (IMG:style_emoticons/default/rolleyes.gif)
jeff bowlsby has a picture/diagram on his web-site that shows the location of all the factory holes meant to be used to foam out the hollow spaces. get in touch with him if you can't find the pic on his site. the german word is "Hohlraumversiegelung" ... the targa bar has 3(?) holes on each side, often also (wrongfully) refered to as the mounting holes for a ski rack. there is a aftermarket ski-rack that uses those holes to mount on, but they were originally used to get the foam in for the hohlraumversiegelung ... later, Andy |
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