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Old 10-03-2021, 02:09 PM   #1
bhplumber
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Default Supernova cab insulation

I have a SN 6331, I have installed dynamat on the cab floor and firewall trying to keep some of the wind and engine noise out. Has anyone insulated the doors and roof. I'm curious how to get to the space between the cab roof and the overhead bunk. I think that is where allot of my road and wind noise is coming from.
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Old 10-05-2021, 08:29 AM   #2
Vinnie
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I have done the doors and "B" pillar behind the doors. There was zero sound deadening in these spaces and they are simply sheet metal. The insulation made a very noticeable difference and I plan on adding some more in the future. I have not tried the roof yet but based on what I saw in the other spaces I would not expect there to be much of anything in there.
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Old 10-08-2021, 08:04 AM   #3
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I did the doors on mine. I did 80mil butyl and then the foam on top of that (both noico). Be careful at the to of the inside of the door, too thick of foam and the window interferes when rolling down.

I also removed the b pillar panels and did those at a later time and noticed no difference.

The dog house and floor are both 80mil and the thicker (315?) noico red. Then I also did some on both sides of the firewall.

The biggest thing that helped my noise is the fan clutch.
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Old 10-10-2021, 09:49 AM   #4
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What did you do about the clutch fan to quiet down the clutch fan noise
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Old 10-11-2021, 09:37 PM   #5
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I converted it to the Horton ec450. Now the fan is off the majority of the time and only on for a minute or two to cool it back down occasionally.
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