http://subie.tv features the Crawford Air Oil Separator how to install on the http://projectsti.com 08 STI. Check out the site for more video installs of thi…
Crawford Performance Air Oil Separator How To Install by Subie TV
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I am deciding between this and the Perrin which is very similar yet can be
disassembled. Is there and advantage to either besides that?
?So basically you are:
-capping off the rear turbo inlet (at the electronic valve
-running both the valve cover breathers into the top side can tube
-running the one crankcase breather (on the block near the turbo) into the
bottom side can tube
-running the can’s outlet into the front turbo inlet
-routing the can’s bottom drain to the one crankcase breather (doesn’t that
port have pressurized blowby under boost?)
This is simplifying the pcv system where all three crank sources run
through the can so blowby will have to go into the can. Does this elimnate
pcv when the car is under vacuum / at idle since you capped off the pcv
valve?
I have a built hybrid block and get a LOT of blowby coating my intercooler
and tubing with anything over normal (higher than 14psi or so) boost and
need to decide on which setup to go with. I’m wondering about running a
catch can on each side of pcv to keep its function or just use one
crawford. Thanks for the excellent tutorial on installing the separator
btw.
nice put your wiring harness, with that plastic connector right next to the
turbo. Suppose stock it’s right over the turbo, so it’s probably heated to
take some heat. Factory turbo heat shield for the win I guess.
Yes.
MAN.. all those factory rubber hoses are so soft and flexible. The ones on
MY04 STI are all hard. The slightest bend to them and they crack and I’d be
screwed.
Yes, I need a tutorial for the V2 since I’m too nervous to splice into the
main coolant line for my turbo : (
love imprezas you can ziptie every thing !
engine oil not staying in the engine????
this is kinda complicated for me.
@OldboySaint I gotta agree with you! This shit is expensive as hell and
they couldn’t even supply hose clamps? Guess its too much money for them to
handle… LOL
my shit cracked too.. fuckin’ subaru..
@conspiracyquality All engines have some amount of blow by, whether they
are NA or turbo, and no matter what condition the rings are in. Replacing
the rings will not eliminate blow by since no piston ring seals 100%. Every
factory engine with a PCV system lets some oil into the intake that can
hurt performance. Installing a catch can is a good way to prevent this, on
any car.
you can buy this same thing at napa for like $40. Sure, it doesn’t say
“crawford” on it, but it does the same fukin thing!! $400?!?!? L O L
I like this kit better than grimmspeed. I am getting this one!
how can this video show that cap for pcv valve and the kit doesnt come with
it????????
is it the same process as for non sti? i mean for wrx
@hofmannsapprentice sticky or malfunctioning pcv valves are dirt cheap to
replace even cheaper to spray out with some carb or brake cleaner. But
really is this that big of an issue on Subaru’s it has to have its own
aftermarket fix? I agree it’s better than burning oil but wow.
I don’t like how there is zipties holding the hoses :/
Seems to me like this is band-aid for a blow-by issue, but I don’t know
subies. Wouldn’t the proper repair be to replace the rings that are crispy
fried? Just wondering.
LOL, the logic of having the oil drain into the crank case vent is bunk.
Heat and pressure will just re atomize a good bit of that oil pushing it
right back into the system. Not to mention, the PCV is important as it uses
vaccum from the intake to pull junk out of the crankcase when the system
isn’t under pressure. Disconnecting the PCV reduces a good bit of
“Cleansing” action from the ventilation system. If you want a AOS to drain
back into the sump, it should be done via the oil fill cap.
Hoses are reversed *
you guys should do an update for the v2 🙂
I’d rather go with my Grimspeed AOS setup. Much more simple and still the
same performance as the Crawford setup and CHEAPER!
its AMERICA LAND OF GREEDY FUCKING PIGS so the answer is yes
Using zip ties is fucking ghetto. Are hose clamps too expensive to come
with this $400 air/oil separator?
@conspiracyquality sticky or malfunctioning PCV’s can cause excess oil
buildup, as these cars get older it’s not a bad thing to do, its better
than burning oil.
Does it matter which passanger side crossover tube you use on the
intercooler? It seems like the tubes are reveresed on my 08 sti and I doubt
it would really matter but one does have a lower height relative to the
ground
false.
Zip ties holding hoses that could potentually crack and pour oil into
engine bay and start a fire! REALLY?
Is this process same for 2002 WRX?
Grimspeed better
that niggas fast
Just received my Crawford air/oil separator in the mail and expect to
install next weekend… any tips for an install on a 2007 LGT?