I noticed that on my 2000 Maxima that where the air intake meets with the airbox there is a movable sleeve that slides from the intake to the airbox.
It isn't fixed, why?
When I went to replace my air meter box and sensor the sleeve wasn't even connected.
It doesn't appear to be a way to secure the sleeve to make it secure and to seal these two intake parts.
Any idea why this is engineered like this?

 

Does it resemble an accordion?

In any case, seems as if you may be missing a hose clamp if it's not secured to anything.

The reason for the accordion flex area is because the engine isn't fixed while running and shifting gears, the engine is moving quite a bit too, same goes for the exhaust flex pipe.

 

No its not accordion styled. It is a rectangular stiff plastic coupler.
It looks to be free to allow movement of the engine from the hard mounted air intake. Its just curious that it can slide back.

 

Ahh yes, from the sorta scoop that sucks in air above the radiator. I don't know, this the item that has the foam outer lining? Not sure, mine keep getting undone so I drilled a screw in it much like broken legs get fixed.


Most of us have aftermarket intakes at this point, so I'm sure they're long gone or rotting in someone's garage.

 

NmexMAX I think you're correct. Today I replaced my air meter box/MAF and that's when I discovered the sleeve. When I went to shake the air filter box out some foam pieces did come out.

 

I used a normal silicone coupler I think it was 3.5'' I'm not 100% sure but it fits really good.
Don't need a clamp. Just slip it on and it's on there.

sorta see it here.

 

It's not a very well designed piece for sure.

When I first got my current car and my old I30 both had that plastic sleeve moving around and intake was basically disconnected from snorkel.

Two ways to fix this, one was posted above ^^^

Another is, just take a regular worm clamp and move the plastic piece all the way up so it's connected well, hold it with hand and tighten clamp right behind it so it can't slip back off. This is what I did way back in the day and it worked to hold it in place, never came off again.

 

i just used the thick foam tape that way it still slides on and off for when you may need to work on her it just keeps it snug without having to glue tape or drill or clamp if it was supposed to be clamped it would have Been its like that for removal

 

We understand why its like that, so you can remove it. Just a crap design either way that slides off and leaves intake disconnected.

Not very hard to remove a warm clamp btw

 

Zap-straps & duct tape.

 

Are you referring to this (circled in red) which connects to the duct above the rad?

 

Thats an idea. I've not heard of these.
BTW I like the seal you have on the initial air intake. Is that an OEM seal job or did you use something aftermarket?

 

A worm clamp would also work well and be easy to remove come the need to.
Thanks

 

Yes that's exactly what I am talking about.

Do you know if having that sleeve slip open would effect the performance at all? It looks like you could lose some of the air volume being forced in through the stock intake while in motion.

 

If that thing becomes disconnected it will indeed cause issues (dont ask how I know)....

I remember it happened to me many years ago with my old I30....it starved the car of air at wide open throttle and became a restriction when lots of air was needed

 

rich6661
#1 go to home depo and you'll see the 'D' style weather stripping.
Get the nice rubber foam one. $3.

#2 Just buy a coupler.
It'll make a perfect seal. Hot radiator air is not good for performance.

Don't be cheap.

http://www.siliconeintakes.com/silic...ses-p-619.html

 

I might do this too, sounds easy!

 

Gotcha. We'll be taking care of those two items this weekend.

With hot radiator air being bad for performance then why are most aftermarket air induction systems mounted in the engine compartment where it's always hot?
It seems the stock air intake would bring in cooler air.

 

Why do you think?

loud = more hp,
stock = Restrictive. It doesn't go bawwww. Nissan is stupid. DUH!

 

This almost makes sense

 

The point of a cone intake vs stock box is air volume. Stock airbox delivers cooler air sure (not by much when car is moving) but it becomes a restriction at higher rpm where more air is needed.

This is why even the GAB mod has such nice gains, just from opening up an extra hole in the airbox for more air at high rpm.

And yes noise has lots to do with why the stock airbox in every car is the way it is, it does have to be quiet. And more performance often time does indeed equal added noise.