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Sound deadening material installation in 720


matrophy

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Road, engine, tranny noise is making me crazy in my new-to-me 86 720 and I want to add some sound deadener to the floor, doors and behind the bench seat.  I am wondering if I were to add the noico 80 mil deadeing mat if I am supposed to put my rattan or whatever it is called that is under the carpet back over the top of the deadener mat or just take that out and throw it away. I also saw somewhere about putting a closed cell foam on the floor between the deadener stuff and the carpet. Anyone with any experience doing this install?

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You don't need 720 knowledge.  You need sound deadener knowledge.  There are a few guys on ratsun who know a thing or two, but research into that topic on the internet will be your best bet.

 

Home built by jeff on YouTube goes into some theory on his porsche build.

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