Cabin noise

[Stressball]

Originally Posted by gusthewonderslug

I have spent hours on this issue, I have pulled my carpets out and laid boom mat under the carpets talking special attention to the trans tunnel and foot wells, installed heavy rubber floor mats to the footwells and boot, had roof linings made up out of acoustic foam, lined the scuttle with boom mat and filled the space between the front guards and the inner guards with expanding foam, made an engine blanket out of heavy aluminium backed acoustic foam, I even made up splitters to go either side of the windscreen and filled the windscreen surround with silicon, these mods made about 4db in noise down from 72db on the freeway to 68db, the best and most effective mod was to make a barrier that fits above the pedals up underneath the dash out of foam floor tiles and the roof lining, the rest help but not with a huge result.
The ones that did nothing were the windscreen splitters (look at a Merc Gwagen)
And The silicon around the windscreen.
I even looked into active sound attenuation, this is noise that is exactly the opposite of the noise being generated by the road noise and they cancels out each other, masking road noise.
I would also like to investigate installing an engine cover from an Alfa Romeo (they also use the VM in their diesel cars and sound completely different to the Jeep) to see if that reduced the injector pulse noise.
Happy to hear what everyone else has tried.

Earplugs or noise cancelling headphones! Problem solved...There you go I just saved you heaps of money and time....

[Maso]

Buy a new Range Rover and change the badge.................sorted.

[Nanook]

Originally Posted by Stressball

Earplugs or noise cancelling headphones! Problem solved...There you go I just saved you heaps of money and time....

That's a great idea until you don't hear the siren from an emergency vehicle coming up your rear at a great rate of knots.

I've seen it so many times here in Newcastle. Drivers wearing headphones not being able to hear anything around them or bother looking in their rear mirror.

Anyway, I've had my rant. Please carry on....

[perry_boy]

A friend of mine just did the noise insulation last week for his JK, big job but it does help a lot because he run 35 muddy now, he did four doors and whole inside floor, materials costs around $500.

I am also planing to do it for my 37 muddy JK because taking my 3 years old kid for long trip is pain

[nevillebartos]

I looked into this a while back and results seemed pretty mixed. I stuck hothead headliners on in the early days to help with the noise / direct sun heat, I think they did a little bit but its still fairly noisy, they're made nicely though and fit well. Next on my list is dynamat + dynaliner or maybe similar from a less expensive brand. I've seen reports ranging from it making no difference to a lot of difference. If I ever do this I've got a measurement mic laying around and will take plenty of before / after readings.

[Snort]

[QUOTE=
I am also planing to do it for my 37 muddy JK because taking my 3 years old kid for long trip is pain
[/QUOTE]

Mmmmmm leaving the kid home is the only way to solve that!!!

[NTRubicon]

Originally Posted by Snort

Mmmmmm leaving the kid home is the only way to solve that!!!

I use a method of gaining back seat compliance. Set an open pack of lollies on the centre tray and tell the children that 'if they are quiet and behave themselves, they get to have the whole packet when we get to our destination'. For every breach, just grab a lolly and throw it out the window.