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Modifying Stock R33 Airbox/snorkel Or Entirely Custom


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Gotcha. One spare snorkel is on the way. PMed someone about a spare box. I meant to go check if plastic plumbing pipe is made of <PP> like the airbox stuff ("SAE <PP> T-40" = Polypropylene), to see if I could use it to do the extensions and also as the 'solder', but I forgot. Don't care so much about colour cos it'll be used to make a mold and hopefully make it all from fibreglass later.

Got a second full airbox and second snorkel on the way. Should be enough to build a new expanded snorkel/box. Does anyone know the name of an air/fluid flow simulator (preferably 3D)? Free or not, online or a stand alone application, doesn't matter.

Why try'n make a larger snorkel it's never going to look factory. Better Idea is to have two separate air feeds, one the standard snorkel and one the on the left hand bottom side of the filter box. Just use something like uni-filter foam sheets and a 3" intake that runs into the guard. Painted black it will be nearly invisible, similar setup to what's in the gt-r's.

I'm mostly doing it to get better air feed, the looks are secondary because I'm in Canberra where ppl do whatever (unlike Vic). If it looks stockish, that's a bonus. And I'll be attempting to make it look stock because if I can make more than one, maybe others will be interested. It's only going to be 10-15cm bigger than the stock one, I'm gonna find some simulation CFD software and mess about with flow. Besides, I have a FMIC which reuses the stock piping, so I can't run a CAI into the bumper.

haha this is great Ben, your car is exactly the same as mine!

I run a Blitz LM front mount, so there's no hole for me to run the CAI like most other people do. I've also got a GT-RS which I know you're getting soon :)

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