Recent Topics
PL25230
by flhr
36 minutes 5 seconds ago
Fram XG4967 10,000 mile OCI
by bullwinkle
59 minutes 3 seconds ago
2005 Chevy Uplander transmission problems...
by gregk24
Today at 05:24 PM
Hybrid oil change intervals
by allboy
Today at 05:01 PM
How many speeds are enough?
by cjcride
Today at 04:51 PM
Fleetguard LF16035 for my Dodge Cummins?
by allboy
Today at 04:36 PM
Ruger 9E
by Sonic
Today at 04:02 PM
McDonalds McWrap, why not heated shell?
by cjcride
Today at 03:53 PM
lithium grease or moly grease , will mobil 1 synth
by MetalSlug
Today at 03:43 PM
Lower unit gear oil recomendation
by sHERM
Today at 03:40 PM
It's official.... Clarkson has lost his mind.
by mrsilv04
Today at 03:30 PM
Removing Skunk from under the shed
by dja4260
Today at 03:09 PM
Newest Members
kaesees, bprat318, Winter_Texan, SloopJohnB, world123
50815 Registered Users
Who's Online
96 registered (13Tacoma, 901Memphis, 2009Edge, 1990LTD, 77GrandPrix, 7 invisible), 2009 Guests and 220 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
50815 Members
64 Forums
217120 Topics
3418774 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Topic Options
#906139 - 05/22/07 08:24 PM Air/Oil Separator for Subaru STi?
sekretskwirl04 Offline


Registered: 05/18/07
Posts: 19
Loc: Tahoe, CA
My first post in this forum. Great place and love the tech'. Anyway track season is here and we are looking for a viable A/I Separator for our 04 STi. Crawford makes one...a real nice one that is Subaru specific and well engineered BUT it costs 360$ Uh huh. Waaay TOO MUCH for a simple device IMO. I found a Moroso at Summit for 95$ and a Jegs for 45$. They all look like the same thing> hoses in/hoses out. I'm not sure if these will work with a forced induction motor though.We want to recirculate the oil back into the block for sure and not vent it. Ideas? thanks Danielle

Top
#906140 - 05/24/07 03:28 AM Re: Air/Oil Separator for Subaru STi? [Re: sekretskwirl04]
outersquare Offline


Registered: 06/02/03
Posts: 202
Loc: sokali
if you mean an oil catch can, you can rig one up for $20;

http://www.k20a.org/forum/showthread.php?t=10278

btw, don't use clear lines like those pics, use fuel/egr lines and yellow teflon tape.

Top
#906141 - 05/24/07 04:09 PM Re: Air/Oil Separator for Subaru STi? [Re: outersquare]
ccs v2.0 Offline


Registered: 08/07/06
Posts: 567
Loc: IL
The thing to watch is that the reservoir may not be compatible with synthetic oils and, after a while, as the oils starts 'eating up' the plastic, you'll see the walls becoming cloudy. IIRC, there will be a sticker on most filters with a statement to that fact.
_________________________
The light at the end of the tunnel is the Recession Freight Express Train coming at us. - Al, 11/07/07

Top
#906142 - 05/25/07 05:57 AM Re: Air/Oil Separator for Subaru STi? [Re: ccs v2.0]
SamSnyder Offline


Registered: 12/24/06
Posts: 17
Loc: San Fernando Valley
They're selling a few on ebay too. Take a look over there.

Top
#906143 - 05/26/07 06:58 PM Re: Air/Oil Separator for Subaru STi? [Re: SamSnyder]
AndyH Offline


Registered: 11/07/04
Posts: 2493
Loc: MSP 'burbs, MN
A very slick setup offered for sale over on www.iwsti.com by a forum member:

http://www.iwsti.com/forums/showthread.php?t=68600
_________________________
'13 VW Golf R: Castrol Syntec 0W-30
'13 VW GTI: OEM Factory Fill
'05 Audi S4 Avant: Mobil 1 0W-40

Top
#906144 - 05/28/07 10:29 AM Re: Air/Oil Separator for Subaru STi? [Re: AndyH]
gtx510 Offline


Registered: 04/26/04
Posts: 1463
Loc: CA
Do you think oil would eat the foam in that second separator?

Try googling for "air oil separator". They're common on airplanes and diesel trucks. I've even seen a few sites that show you how to make one. Here's a how-to for a Sube.

An oil catch can isn't an air/oil separator. And you'll get better ring seal if you have the intake drawing air out of the can (after the oil has been removed).

Top
#906145 - 05/30/07 04:07 AM Re: Air/Oil Separator for Subaru STi? [Re: gtx510]
racer12306 Offline


Registered: 10/06/05
Posts: 1476
Loc: Baltimore, MD
i have one of the ones made from an air compressor system filter. so far it has been good with a year and a half of service on it, with synthetic oil. thats about 30000 miles for me.

i believe you want to make sure you have a check valve as to not send boost up into the valve cover.
_________________________
04 Dodge Neon SXT/2.0/MTX/5w30QSUD/PureONE/12mo

12 Chrysler T&C/3.6/6A/5w30PU/Wix/Looking for 10k miles

07 Chevy Impala/3.5/4A/Shop Pref/OLM

Top