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SummerSledSix SummerSledSix is offline
Registered User
Join Date: Jan 2002
Location: Connecticut
Posts: 369
Used the aluminum faced "dynamat extreme" on the engine side, and their "extremeliner" on the cabin side. Not quite the hounds of hell (mfi might also be quieter than carbs), but still not conducive to listening to the local classical station. I'm still trying to decide how much noise is due to the firewall vs the back window vs the firewall welded engine mount with the delrin bushings. Not much isolation there...

The double window idea sounds intriguing, shouldn't be too hard to sandwich two panes together with some of the gasketing used to make "thermopane" windows. I wonder how mount-able that extra thickness would be though.

BTW, nice '74! Wish I had some extra bucks...
Yellow '76 914 3.2
Old 04-09-2002, 07:47 AM
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