2015 SUBARU WRX STI - Killer B AOS - Part 3 - 1-Year/Inspection - OCTurboJoe
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- Опубліковано 30 бер 2020
- I've ran the Killer B AOS for a year through [three] different power levels. The more power I make, more oil is bypassed through it. So a Radium oil catch can had to be installed to intercept the bypassed oil.
As a result, I do my last inspection of the AOS before moving on to my next system.
*Not discrediting Killer B Motorsport as a whole. I am sharing information and constructive criticism of this product based on my personal experience and speaking for others who have had the same issue.*
Killer B AOS: www.killerbmotorsport.net/oil...
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I think it's safe to say that running any AOS or catch can setup is safer than not running anything at all. But nothing is perfect. Agree?
Something to keep in mind; Yes your catch can may be catching all of the oil but no system is perfect (ie. large pressure differential out of the can, clogging, etc.). A lot of people decide to throw steel wool, brass filters, and other filtering media without taking their downsides into consideration. You want a balancing act of filtering and a low pressure differential out of the can. Very few catch can manufacturers take this into account and produce parts that significantly raise your crankcase pressure, not to mention they could potentially stop flow entirely if they get clogged. The only true “filter” I would consider running is the Mann+Hummel Provent line. Other than that, I only stick to catch cans with either centrifuges, large volume (expansion does wonders on oil vapors, those empty Cuusco cans aren’t as bad as you would think), or labyrinth baffles.
Most AOS' out there sans Radium utilizes some kind of spinny, centrifuge design. Well, I found that it doesn't work well. With my final setup, using a modified Radium AOS where there are two stages of filtration media, going from high pressure to low pressure , I was able to catch all the oil without having any oil vapor escape at the outlet. In fact it was only a very, very tiny amount of condensation that was present at the top AOS outlet, which never made it to the turbo inlet because it was already hot by the time it got there. No oil loss, no milky residue was found in the Radium AOS. I finally figured how to mitigate oil consumption. Mind you, I had -1psi of vacuum pulling crankcase pressure at the rear turbo inlet at WOT without oil vapor returning into the intake. VTA AOS' really suck. Not having vacuum at the crankcase induces pumping losses. Unfortunately, I sold my car for a '21 Crosstrek. The car ran flawlessly until I got rid of it. There's more information on my IG about my AOS journey.
Videos like this remind me how much I have to learn about modifications. Great uploaded.
Yes. Know what you're getting yourself into before throwing parts on. Research is very important.
I can't believe it, we had the same idea! I've been thinking of putting that steel wool inside the vent tube ever since you said oil was bypassing the Killer B AOS in one of your IG posts and then you said it this video! I'll definitely have to try it once I get my AOS
Great minds think alike.
With the steel wool, it may reduce the chance of oil going through. That all depends how much pressure is entering the AOS and how much vacuum is produced at the turbo inlet. It should allow for a good pressure drop without affecting efficiency. Lmk how that goes. I've also cleaned the AOS up and I'm about to put it up for sale with the steel wool in it.
Car still looks amazing.
Keep the family safe.
Thanks. You do the same!
Man was anticipation this video for the longest time. Can’t wait to see the new setup. Installed the dual catch can from Radium on my stock STI motor like you suggested. Thanks🤙
Nice! How is it working for you so far?
OCTurboJoe haven’t driven it lately because of the quarantine. But when this is all over driving the hell of it.
@@valkery8068 Awesome, I'm an essential worker so I've been taking advantage of the empty roads lol.
OCTurboJoe haha that's awesome, what industry do you work in?
@@MR__JUSTIN Military aviation. My description reads, Aerospace Propulsion Craftsman. Sounds fancy for just Jet Engine Mechanic. Lol.
that's actually what I did when I found out it was passing, It is somehow improved for now at my power level, but as you said it should do a better job than that.
It should. 🤷🏽♂️
Ok so I like you idea for the mesh to be added. Now how about adding a repellent for oil like never wet 2 step spray can. If the purpose it to get the oil/water the it makes sense to apply a surface that would repel the oil water so it would not stick to cone or internal surfaces
What setup would you recommend for aos/ catch can? I just got my first sti and don’t know a ton about them specifically as I always had git’s before
IAG aos
Debating between this and the IAG Street V3. Which should I go with?
It depends on what you plan on doing with the car, what fuel you're using, how much power you're making. Killer B claims it can be used for every type of car. However IAG has different uses for their AOS' based on power and fuel.
What kind of oil are you using? In the 2012 STI I used to own, pushing just below 300hp on stock turbo, I only had that duel moroso catch can setup and I barley every had any all in there at all during the warmer months using Amsoil signature series.
Motul 8100 X-CESS. Gonna be using Gen 2 on my next oil change.
This video was Rotella T6. Which isn't great in my opinion, despite it being a favorite in the Subaru community.
@@octurbojoe Yeah, I'm not sure what made t6 a fav. If you still have oil getting past with the 8100, give the signature series a go, then claim the lowest volatility because of their "special molecular structure" for performance and FI applications. Sounds like marketing BS, but seems legit, I rarely ever had to add oil between 5k changes and never really found more than water condensate in my catch cans in the winter.
@@_jovian I disassembled my Radium AOS-R. It didn't have any gunk like my Perrin and Killer B AOS did, and definitely did not have any bypass on the return hose. The baffle design that I implemented in my Radium AOS helped a lot. This was with the Motul 5w40 from above.
First!
You have incorrectly plumbed the drain hose into the crank case breather port, no wonder the aos is not performing properly. U should be draining it back to your sump or to another catch can.
What about IAG AOS?
If you run the Street AOS, it will still pull oil into the intake. If you run the Comp AOS, it will spit.
OCTurboJoe: so point of doing street at all?
@@derrickgarcia303 The point of running street series is if you're near stock or modded with moderate power on E85. E85 tends to contaminate oil so pulling leftover E85 byproducts from the engine's blowby will reduce contaminated oil returning to the sump.
So is the street AOS from IAG is fine for bolt on stuff?
@@derrickgarcia303 Should be fine. But keep in mind that the PCV valve is retained so some oil may get past the AOS and into your intake manifold.
Why not just go vent to atmosphere?
The next video will answer your question.
OCTurboJoe can’t wait! Like you I had multiple AOS setups, finally landing on my vent to atmosphere setup.
@@TC_10000 I got something special.
You do want fuel vapors sucked out
Absolutely, but not oil.
OCTurboJoe yeah u keep saying air instead of fuel/ethanol/water vapors is all
@@aaronbeall8576 Of course, they're not as volatile as oil and they're carried out with the air, however you don't want them circulating back into your oil or you don't want oil circulating back into your intake. That's why I personally prefer a vacuum source for an AOS and one that's efficient enough to not re-circulate oil but to separate the oil.
I dig the setup though! I need to get these A/N push locks and that Y is cool too. Also G81801-0020 chafe sleeves are nice