View Full Version : What are air breathers?
smallkid
13-02-2004, 11:23 PM
Hy guys I was browsing in Autobarn today and saw these little fellas.
They are called air breathers, and they are smaller versions of a pod filter. The filter size is slightly bigger than a 50 cent coin.
Anyone knows whut are they ancd care to explain their function?
Thanks!
McChook
13-02-2004, 11:25 PM
I dunno aye....
smallkid
13-02-2004, 11:25 PM
BTW guys here's a pic
http://www.tuneshops.com/productimages/Breather_Tenzo_sm1.jpg
McChook
13-02-2004, 11:28 PM
OH
put them on the top ofyour catch can/oil breather or if you are japanese, you would call it a surge tank, but not in Australia
smallkid
13-02-2004, 11:29 PM
Is it? Any good?
Any pics showing their application?
McChook
13-02-2004, 11:32 PM
hang on, skyline's and silvias always have them, so look for under bonnet shots... we have a catch can on the race car, so I will look in our archives
McChook
13-02-2004, 11:54 PM
one of these
http://www.gcg.com.au/catalogue/Oil%20Filters%20&%20Oils/oil%20air%20seperator%20round.jpg
In action (filter missing coz cusco ones don;t use them
http://www.nismo.com.au/pricelists/Cusco/cuscooilcatch.jpg
smallkid
13-02-2004, 11:57 PM
Whoa...okay....okay since I am curious, and a ill knowledged guy, what does an oil catch tank do?
McChook
13-02-2004, 11:58 PM
well, it separates air from oil... catches excess... its a safty thing...
DAVE, i know you are here.... answer....
smallkid
14-02-2004, 12:00 AM
Well, these breathers..besides teh oil catch tank...no other applications?
McChook
14-02-2004, 12:01 AM
oh, I' sure they prolly do other things
riceboys prolly hang them from their rear vision mirrors instead of air fresheners
smallkid
14-02-2004, 12:05 AM
oh! now i get it!!
hee hee....
Becaus i see one fitted somewhere along some pipings as well. Not too sure whut piping are those though.
U can stick them directly onto any crank case. Its just a breather for the PCV system. If u get a heep of blow-by, then u use a catch can to help separete the air from oil. otherwise u can just attach one of those guys to ur crank case and let it vent to the atmosphere. Note: if u do get blowby with the breather, expect some oil in ur engine bay.
McChook
14-02-2004, 12:34 AM
:thumbsup:
what he said exactly. altho venting causes a DEFECT
smallkid
14-02-2004, 12:44 AM
Hmm..does that mean that it removes excess pressure in your engine oil? I cant imagien engine oil spewing out to your engien bay though
the PCV (positive crankcase ventilation) system is built into all cars. From factory it is ducted straight into ur intake manifold. U can mod it with a 'cool' breather if u wish..
Yes air does come spewing out, ive got a good video of a turbo b16 with HUGE blowby. This usually indicated advanced o-ring wear though.
smallkid
14-02-2004, 01:12 AM
IS that the little pipe that goes to the air filter? Something like a fat straw
yer from ur valve cover to ur airfilter or throttle body.
smallkid
14-02-2004, 04:17 PM
Yeah. That is the one
wynode
14-02-2004, 05:07 PM
Its attached at the end of the crankcase breather hose. This hose usually feeds back into the intake manifold and as a result reduces the combusting efficiency slightly. Hence people use such a breather to keep the oil vapour out of the chamber.
Note though, that it is defect worthy as it vents to the atmosphere.
smallkid
14-02-2004, 08:55 PM
Oooh! Okay! Competely understood now. Thanks guys!!
Jim80y
14-02-2004, 10:13 PM
What you need is one of these:
http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMjczNDE4NnM0MTNkZmQzMXk1NDE%3D.jpg
You can either connect it to the valve cover or inbetween the PCV valve and intake manifold.
smallkid
14-02-2004, 10:28 PM
Okay...another question guys
An oil catch tank. Their applications are most suited for a Turbo car right? Either that or a larger capacity N/A car.
So my puny Civic does not need it?
smallkid
15-02-2004, 10:28 PM
so guys, any good?
Integ LS
16-02-2004, 06:57 PM
Ive got one on the teg the way I figure it is if their is any blowby (unlikely in NA motor) but incase I dont want it going into throttle.
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