Hood Liner
#31
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Well, I went out with the drop light and found a difference. The '09 has large Helmholtz resonators (tuned sound chamber) below both airboxes. These are connected by a plastic tube to each airbox. The tube connects to a port about 1" in diameter just in front of the filter element. They are not installed on my 6MT. The filter housings are identical, but there are plugs in the ports on the newer car.
Helmholtz resonators are generally tuned to null out intake sound, but I wonder if these were used to increase it?
Greg
Helmholtz resonators are generally tuned to null out intake sound, but I wonder if these were used to increase it?
Greg
Curious, this made me go up to the attic just now to look at the OEM air boxes. You're right... there's a 1" cap directly in front of the filter elements. Also, one of the flex-tubes (only one) has an additional resonator hanging off it like a 4" tumor. I thought that was odd.
I suppose the resonators you're referring to could be there by design to increase intake noise . But if INFINITI were to do that, you think that would be for the 6MT, rather than the non-Sport. I suspect the difference is in model year, and not model. As for an explanation for the different designs, I have no idea.
#33
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hooey_b (12-12-2015)
#35
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Does anyone who removed their hood liner have any update? Problems?
Now that it is hot out, I'm starting to feel the warmness in the engine bay when at a stand still for a bit.
Or would a CAI be the only real way to fight off heat soak?
Has anyone done a temp reading to the engine bay, before and after removal of the hood liner?
Now that it is hot out, I'm starting to feel the warmness in the engine bay when at a stand still for a bit.
Or would a CAI be the only real way to fight off heat soak?
Has anyone done a temp reading to the engine bay, before and after removal of the hood liner?
#36
A 1/4 mile @ a time
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Does anyone who removed their hood liner have any update? Problems?
Now that it is hot out, I'm starting to feel the warmness in the engine bay when at a stand still for a bit.
Or would a CAI be the only real way to fight off heat soak?
Has anyone done a temp reading to the engine bay, before and after removal of the hood liner?
Now that it is hot out, I'm starting to feel the warmness in the engine bay when at a stand still for a bit.
Or would a CAI be the only real way to fight off heat soak?
Has anyone done a temp reading to the engine bay, before and after removal of the hood liner?
Just for reference, here is a picture of a 370Z that shows that they don't have a hood liner.
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WillCo1 (06-09-2014)
#38
Registered Member
Yeah, I didn't think there would be. If the black car can stand the Las Vegas sun all summer long, then the heat from the engine would do very little.
And besides, if there was a big enough fire to release the liner, I think I would rather it just burn to the ground, then have the chance of it being repaired. It would be a total loss.
And besides, if there was a big enough fire to release the liner, I think I would rather it just burn to the ground, then have the chance of it being repaired. It would be a total loss.
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ANMVQ (06-10-2014)
#41
I took mine off on a whim while replacing my air filters yesterday. Even with everything totally stock and regular paper filters, I can hear a slight difference.
And yeah, there is a bunch of painted body that is inches away from the block. Not too worried about the hood that is farther from the engine than the plastic shroud.
And yeah, there is a bunch of painted body that is inches away from the block. Not too worried about the hood that is farther from the engine than the plastic shroud.
#42
Wow
Hey Rochester, I just wanted to say your G looks great! Really like you color combo! Your mods look so classy
#43
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The engine bay, like the rest of the car, is always a work in progress. That gold color didn't last too long on the engine cover, and I went with a more copper/orange color. Which is still not quite right, but good enough so that I like it better.
Last edited by Rochester; 09-05-2015 at 03:06 PM.
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conquistador (10-10-2014)
#44
A quarter past stripped
Is there really any increase in the intake sound? I've been batting around this idea since the thread was originally posted. After this amount of time a problem would surely have developed from heat if there was going to be any.