S13 SR In-line air restrictor

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
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OM3GA
Posts: 3041
Joined: Fri Apr 14, 2006 11:41 pm
Car: A Sexy Mobile, 1993 Nissan 240sx 180sx Hatcher

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I was curious if you need to use this air restrictor when installing a catch can. I will order a new one if it is necessary, i am not exactly sure what the purpose of it is unless it is keeping the intake from creating too much vacuum?

Hopefully someone here knows what it does. :chuckle:

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Rays_240
Posts: 341
Joined: Mon Aug 11, 2008 2:22 pm
Car: 93 sr20det 240sx Hatchback

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I wondered this also. I heard there purpose was to supress any kind of flame that might come through but I thougth that was kind of odd.

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bladetech8
Posts: 36
Joined: Thu May 28, 2009 1:35 pm
Car: S13 Hatchback

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Yessssssssssssss you found that little device. :biggrin:

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OM3GA
Posts: 3041
Joined: Fri Apr 14, 2006 11:41 pm
Car: A Sexy Mobile, 1993 Nissan 240sx 180sx Hatcher

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I did, now i just need info!

Nice Avatar!

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bladetech8
Posts: 36
Joined: Thu May 28, 2009 1:35 pm
Car: S13 Hatchback

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Thanks!!

I'm reviving this thread because I need to know myself now.. Anyone have any further insight on this device? :crazy:

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dc1984
Posts: 276
Joined: Mon Nov 14, 2005 2:44 am
Car: 93 240sx/98 180sx blacktop sr20det :RIP/ 93 jeep grand cherokee

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ive done a lot of reading about ways to set this crap up, never eraly came across a restrictor in their.
itd be nice to know if it serves a usefull purpose.

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kouki munster
Posts: 2195
Joined: Wed Nov 09, 2005 6:13 pm
Car: 97 base 240
Location: Anderson, SC

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Seeing as how it is in the hose that goes from the valve cover to the sucky side of the turbo, it is probably to help cut down on the amount of oil that gets sucked out of the valve cover when the turbo is spooled up and really sucking some air. Especially at high rpm when there is a lot of oil vapor floating around the engine.


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