Does anyone know if the holds in the sheet metal of the rear deck are there for airflow?



I am about to sound deaden my 2001 Maxima with damper pads and acoustic foam. That includes covering up a bunch of the open holes in the rear deck to hopefully stop road noise coming from the truck area. But I don’t want to cover up holes that might be there for airflow from the front ventilation system back to the trapper valve in the trunk. Nor do I want to make the car so air tight that I can’t shut the doors.

Anyone know? Thanks.

 

you can cover all that up. lots of people have (including me) with no issues

 

10 char...

 

I plan on doing this very soon for my 02.

 

covering them up does wonders for the bodies in the trunk.

 

Thanks guys. I'll put dampening mats on top of them. Should help a bunch with the noise. After I took the photo, I noticed more holes in the deck closer to the trunk under the rear window (out of sight under my hands). I'll bet those are for ventilation!

 

Am I missing something here? Why do we need ventilation holes for the trunk? Frankly, I'd much rather keep everything in the trunk separate from the cabin. Anything I keep in my trunk for a long time ends up smelling like my spare tire. Besides, it's not like the seat backs create a hermetic seal when they're up. If there was an absolute need for pressure to equalize, I'm sure that's the route it would take.

 

Uhm...ventilation holes are needed for positive air circulation. Without it, the cabin would be sealed and the a/c or dash vents would not be able to blow fresh air into the car, or you might pop a window when you shut the door. I don't know where Nissan put the main vent holes in the deck and I do not want to cover them up with soundproofing material. The one-way flapper valve to exhaust air is usually in the trunk, so that air flows from the front vents past the rear seats to the back of the car. The flapper valve on my Maxima is located on the outer sheet metal half way between the gas cap and tail light, and exhausts air under the trunk...the white thing below my elbow.

 

Wow, so I was missing something. The first part I get. However, the part about the windows popping sounds a bit far fetched to me. Unless the dash vents have one-way valves on them too, I don't see why the pressure wouldn't escape back out through them when you closed the doors.

 

Is this the cause of that fluttering noise when my subs hit?

 

 

I don't think you could pop the window but the door might not close as easily, in the trucks I drive there is a huge difference in the amount of force it takes to close the door with a window cracked. Some new cars automaticaly crack the windows when the door is open (G35 for one, I think). With the exhaust valve in the trunk it looks like the airflow should be mostly one way, into the trunk. Pushing a little air through the trunk should help with the smell back there.

On the other hand, the free air sub in the rear deck will perform best when the trunk and cabin are completely separate . I plan on sound deadening my rear deck soon also.

 

Quite possibly. I had a '91 NX2000 that I had damaged the rear bumper on. I removed the bumper cover for a few days and when my stereo was on, those flaps would get pushed open when the subs hit. It was quite humerous and sounded funny tooo. Pffffffffttttt pfffffftttttt pffft pffft

 

Yeah thats about what it sounds like, maybe a little more tho