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12-14-2012, 08:32 PM | #1 |
Scooby Specialist
Member#: 190502
Join Date: Sep 2008
Chapter/Region:
International
Location: Sydney, Australia
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My Dual Catch Can Install
Dual Catch Can Install
The background behind this mod but in summary is I found my Grimspeed AOS worked fine on the street but at the track it was not doing its job so I decided to move to a catch can. Lots of research later I decided to do a dual catch can setup that would 100% retain the standard function of the Subaru PCV system. This is my proposed hose routing There are lots of catch cans on the market, some are junk, some are overpriced and some are overpriced junk. This lead me to Saikou Michi catch cans, he is a one man show building fully customisable catch cans to order at very reasonable prices. By using Mr Saikou I was able to get the hose fittings done in the sizes I wanted and get the drains and mounting bracket in the right spot so I could mount the cans where my battery used to be. The hose fitting sizes I have made to match the stock size connections for the entire system so we don't get any bottle necks. One month later my custom cans where delivered to my door, the quality is top notch. So I started pulling the car apart to fit the cans, hopefully this will be a thing of the past. Here you can see the oil seeping out of the three way joiner from the crankcase. This is not the PCV on my car, my PCV is screwed into the intake manifold under the throttle body. Here is the PCV, this location makes no difference to my intended routing. In the RHD cars we have the brake booster sitting where you guys normally mount these cans, I had plenty of space where the battery was. Time to mount the catch cans, I traced the shape of the mounting bracket onto paper then checked to make sure there was no wiring behind before drilling the holes. I used some stainless bolts with extra nuts so once done up I would not have to reach behind the fender liner again if I wanted to remove the cans. All done The cans fit really neat into this location and I can easily slide a dish under them for draining. Now back to the hose routing, things are really crowded down here so I took the opportunity to do the throttle body coolant bypass mod to make a little extra room. To do this I simply removed the coolant line from the bottom of the throttle body and joined it back up to where the coolant line from the top of the throttle body comes up from the block. I then completely removed the hose that joins to the top of the throttle body and found it was the perfect shape to use in my catch can install. A picture tells a thousand words. Here you can see I have the three piece joiner on its side with that former coolant hose going back up to the turbo air intake. The 19mm hose goes to and from the catch can and I shortened the other hose going to the PCV. This is exactly the same as factory except now we have a catch can grabbing the oil vapour before it goes back into the intake manifold or air intake.
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12-14-2012, 08:33 PM | #2 |
Scooby Specialist
Member#: 190502
Join Date: Sep 2008
Chapter/Region:
International
Location: Sydney, Australia
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This photo shows the routing to and from the cans. 19mm hose to crankcase, 12mm hose to head breathers.
Not a lot of room here, getting the TMIC back on was a little more difficult. Another shot showing hose routing Very neat looking I will keep you guys updated on what crap is collected in the cans under normal street driving and then track days. |
12-14-2012, 08:44 PM | #3 |
Scooby Guru
Member#: 112759
Join Date: Apr 2006
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MWSOC
Location: In the V hole!
Vehicle:2015 Stock OEM AsFu* 3.6r OMG S.C'd |
Nice job, looking fwd to the gunk pics
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12-14-2012, 08:52 PM | #4 |
Medium Frank
Moderator Member#: 140114
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: Common Sense, VA
Vehicle:2020 Subaru Outback |
Nice!
Did you get a new Y pipe? Your's looks ate up! |
12-14-2012, 09:19 PM | #5 |
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No the y-pipe is fine.
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12-14-2012, 09:26 PM | #6 |
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12-14-2012, 10:25 PM | #7 |
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RMIC
Location: Lindon, Utah
Vehicle:04 sti java black pearl |
I bought the same catch can set up. Still haven't installed it but am very excited to.
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12-14-2012, 11:00 PM | #8 |
Medium Frank
Moderator Member#: 140114
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: Common Sense, VA
Vehicle:2020 Subaru Outback |
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02-04-2013, 01:12 AM | #9 |
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any updates?
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02-04-2013, 06:43 AM | #10 |
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Join Date: Sep 2008
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The cans are still dry but I have not been on the track since installing them, just driving to work and the occasional weekend drive. My first track day is next month.
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02-04-2013, 08:53 PM | #11 |
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Join Date: Apr 2010
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TXIC
Location: Forney
Vehicle:2004 WRX Java black pearl |
cool beans i like
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02-05-2013, 11:12 PM | #12 |
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Vehicle:02 WRX 240sx 2jz GT4088R |
i want
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03-18-2013, 10:02 PM | #13 |
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Join Date: Mar 2010
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Update?
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03-20-2013, 06:26 AM | #14 |
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Still bone dry but I'm yet to do a track day this year, first one is the 13th of April. I didn't really expect to get any blow-by driving on the street.
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03-20-2013, 08:49 AM | #15 |
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Vehicle:2007 STi CGM |
is there any filter media in the catch cans? I don't see a way to open them. Also what gauge cable did you use to relocate your battery and where did you put it?
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03-20-2013, 05:52 PM | #16 |
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Vehicle:2004 8.78 E/T WRX Platinum Silver |
I noticed that your crank case hose is near the throttle assembly. Keep a close eye on that if you feel more resistance in your pedal. Don't want bad stuff to happen
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03-21-2013, 06:09 PM | #17 | |
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Quote:
Its true that you can't open the cans and this was the only negative I could think of in the whole design however the price pretty much doubles if you want cans of this quality that can be opened. Battery relocation here but I have since moved it to the other side. Thanks, will do. |
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04-01-2013, 10:01 PM | #18 |
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South East
Location: Atlanta, GA
Vehicle:2007 WRX FlimFlamRacing |
I just got mine in the mail today. Definitely a quality piece.
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06-28-2013, 10:26 PM | #19 |
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This is typically what I am getting from the can fitted to the crank case after a motorsport event involving boost and corners (AutoX, RallyX).
Head breather can is still dry and I get nothing from daily driving in either can. Haven't done a circuit day yet, actually did 3 laps but spun off on the third and had to fix the car. |
06-28-2013, 10:45 PM | #20 |
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Join Date: Nov 2006
Location: New Orleans
Vehicle:2006 WRX |
do you get more oil in your pcv can or the can connected to the heads?
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06-28-2013, 11:41 PM | #21 |
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Read my post, head breather is dry (no oil).
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06-28-2013, 11:54 PM | #22 |
Scooby Specialist
Member#: 147328
Join Date: Apr 2007
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Location: Atlanta, GA
Vehicle:2007 WRX FlimFlamRacing |
My Saikou cans have collected a few drops in the PCV can and about half as much as the cup in your picture in the breather can. That was from two rallyx (24 runs about 1 minute each). I have forged pistons too.
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06-29-2013, 12:02 AM | #23 |
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Next step for me is to remove the TMIC and see if she is oil free.
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06-29-2013, 12:06 AM | #24 |
Scooby Specialist
Member#: 147328
Join Date: Apr 2007
Chapter/Region:
South East
Location: Atlanta, GA
Vehicle:2007 WRX FlimFlamRacing |
Did you clean your TMIC when you installed the cans?
I did with simple green diluted and finished up with isopropyl alchohol, but I still don't think I got it whistle clean. |
06-29-2013, 12:12 AM | #25 |
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No I just left it sitting upright for a few hours until the oil had drained out, there wasn't a lot so if no more has entered in the last 6 months I have been running this dual can setup then I expect it to be clean.
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