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R33 Gtr Stock Airbox

Brandon
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Brandon Veteran

Brandon

Posted
Posted

To cut long story short, we found theres a small piece of black housing which is attached to the actual airbox that is blocked (from factory). This is connected to a side air intake (probably doesnt matter to a lot of people since 90% of the people I know runs pod filters). This can be undone by depressing 2 clips which is used to secure the bung to the box (I actually saw-ed 2mm off the tip and found out later about the clip). Good news is, I can actually hear the stock bov (I never knew you can, wank factor) and it seems to boost better/more responsive!

Hopefully its ok to take that bung again because I still dont understand why they have that from factory....

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https://www.sau.com.au/forums/topic/328372-r33-gtr-stock-airbox/
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GTR-N1 Grand Master

GTR-N1

Posted
Posted

When I had my R33 GT-R, I found that bung and knocked it out.

Yes it brought :blink::blink::blink: to my face as I could hear the whooosh of air going through my K & N.

And I'm sure my car thought to itself, "Aaah, a breath of fresh air!" :P

Quality of my jokes = :blink:

R32_GODZILLA Proficient

R32_GODZILLA

Posted
Posted

Funny you mention that! I just picked up my 97 GT-R last thursay which was dead stock. First thing on the list was to makes improvements on the intake with a K&N High-Flow panel filter, and make some fort of cold air feed to the std box. I had great results doing this with my RB20 R32 so I steered clear of any pod filters.

I seen this plug on the end, and was interested to see where it could possibly channel air through as it's blocked off and completely useless. So I shined a light through and had a look through the hole next to the front passenger indicator to see if there was a passage for air to pass though. You can clearly see that there is enough room for some flexi-piping to be bent and lead into the side hole.

I set this up on my car yesterday and came up great - Looks neat too. I managed to squeeze an ~75mm pipe from the indicator and squashed though that side hole and then into the side entrance of the airbox. From what I could tell it feels a lot more responsive and seems to spool up easier, including more induction/BOV noise.

I'll take some photos when I get home later in the arvo up put them up here.

R32_GODZILLA Proficient

R32_GODZILLA

Posted
Posted

Here are some photos to show you my setup. Pretty easy to so, just a pain in the ass to gain access to the areas - You'll have to remove the guard lining that runs underneath the front bar to the wheel arch. About half a dozen clips and a dozen screws. You could probably take off the front bar, but would be so much harder to properly align the pipe, let alone all the extra work in taking it off!

post-2240-1278837598_thumb.jpg

post-2240-1278837693_thumb.jpg

post-2240-1278837705_thumb.jpg

post-2240-1278837929_thumb.jpg

Could've probably done it slightly neater, but the indication housing it too annoying to work around and trim bits off, so I settles on that. It's just a flexi-pipe you can buy at any automotive store. It does enough :thumbsup:

GTR-N1 Grand Master

GTR-N1

Posted
Posted
Yea... it does sound and feel good after that. I wonder why I've never read about this ever on the forum. Maybe thats why everyone said the stock airbox is good for more than 300kw.

This has been only one of several 'breathing' restrictions by NISSAN to justify to governmental authorities in Japan that they're only building cars up to a max of 206Kw. :banana:cheeky devils

Owgasm Grand Master

Owgasm

Posted
Posted

Very confused before the pictures.

Seems my one had the bunged removed earlier.

I didn't actually realise until just then where the other end of the hole was. In the wheel arch.

R32_GODZILLA, I like what you've done there. I think i'll give it a go and try it tomorrow.

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted
Here are some photos to show you my setup. Pretty easy to so, just a pain in the ass to gain access to the areas - You'll have to remove the guard lining that runs underneath the front bar to the wheel arch. About half a dozen clips and a dozen screws. You could probably take off the front bar, but would be so much harder to properly align the pipe, let alone all the extra work in taking it off!

post-2240-1278837598_thumb.jpg

post-2240-1278837693_thumb.jpg

post-2240-1278837705_thumb.jpg

post-2240-1278837929_thumb.jpg

Could've probably done it slightly neater, but the indication housing it too annoying to work around and trim bits off, so I settles on that. It's just a flexi-pipe you can buy at any automotive store. It does enough :banana:

Nice work man!

Get some extra air going in.

R32_GODZILLA Proficient

R32_GODZILLA

Posted
Posted

Thanks guys :banana: Like i said I believe the easiest point of access would be removing the guard lining and you have all the access you need. Should've taken some photos during the operation - I was just too eager to get it done as I needed to use the car and didn't think!

Good luck and post some pics of your results!

Brandon Veteran

Brandon

Posted
  • Author
Posted
Nice one Brandon, and great pics.

Had done this a while ago to the 33 GTR too and it's great - a good compromise as it adds a bit of character without being "Brighton-le-sands" spec

Yea. Hahaha. I didnt know stock bov can be this audible.

Anyway its always good to share something like this since we're all here to learn more about our cars.

Owgasm Grand Master

Owgasm

Posted
Posted

I did a quick job today.

Just to get an idea, will fix it up later.

Would this affect driving in anyway? Maybe some placebo effect, but I felt my car was slightly restricting when letting go of the accelerator.

There is less suction + bov noise now though.

I'm unable to run the snorkel due to not having one and my main reason not to have source one yet, is because of an upgrade to the radiator (quite a bit thicker).

The pipe I used was maybe a bit too big in diameter, I don't have much room between the guard/front bar and where the airbox outlet is, so the pipe gets squished, reducing its overall open area.

On that note, I have a bit too much piping (length), but I didn't want to cut it now and find out later that I don't have enough.

Temporary fit, as eventually an oil cooler will be put around this area.

Would this be better or worst than what I originally had, just the hole there open in the wheel arch - no feed.

(Click for larger pics - Sorry about the mess)

th_1-1.jpg

th_3-1.jpg th_2-2.jpg th_4.jpg

th_5.jpg th_6.jpg

th_7.jpg

Owgasm Grand Master

Owgasm

Posted
Posted

I've posted this elsewhere and someone has mentioned, with the corregated piping, would not allow a smooth air flow.

Would this be a problem, and be worst than having the hole just there as it was with no air feed?

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