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05-11-2018, 10:58 AM | #326 |
Scooby Newbie
Member#: 436768
Join Date: Dec 2015
Chapter/Region:
E. Canada
Location: Toronto
Vehicle:2004 WRX Silver |
can i make a 4 port catch can instead of 2 2 ports?
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05-11-2018, 12:09 PM | #327 | |
Scooby Specialist
Member#: 459287
Join Date: Dec 2016
Chapter/Region:
VIC
Location: Vancouver BC Canada
Vehicle:1998 JDM Impreza STi V4 GF8 White |
Quote:
. Last edited by Vancouver98STi; 05-11-2018 at 03:22 PM. |
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07-20-2018, 09:45 AM | #328 |
Scooby Newbie
Member#: 353338
Join Date: Apr 2013
Chapter/Region:
International
Location: Newcastle Australia
Vehicle:2005 EVO 8 WRX + STi gold |
Because of the length of this thread, I started a new thread with a guide on what the smartest way to do the catch can mod is on a standard TMIC setup. See https://forums.nasioc.com/forums/sho....php?t=2879743
Just figured it was appropriate to cross-reference this thread back to that one, for completeness. |
01-27-2019, 01:48 PM | #329 |
Scooby Newbie
Member#: 439201
Join Date: Jan 2016
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Thanks for the post. I've been debating whether to install one on my EJ. I knew catch cans were needed to keep the FA ports from gumming up, but I didn't consider oil vapor condensing in the intercooler.
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03-01-2019, 11:42 AM | #330 |
Scooby Specialist
Member#: 373868
Join Date: Nov 2013
Chapter/Region:
Tri-State
Location: Queens, NY
Vehicle:'04 STi WRB |
Anyone know the hose sizes? I'm reading 3/8 between and 1/2. I'll be running a 3 port catch can.
PCV and breather IN to catch can and OUT to turbo inlet |
03-01-2019, 08:06 PM | #331 |
Scooby Specialist
Member#: 437670
Join Date: Jan 2016
Location: VT
Vehicle:2005 2.5 SC OB |
On my valve breathers 1/2” work great. Snug and No hose clamps needed.
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11-18-2020, 03:52 PM | #332 | |
Scooby Newbie
Member#: 510671
Join Date: Jan 2020
Chapter/Region:
SCIC
Location: California
Vehicle:2006 WRX Gray |
how about this idea - I run a three port catch can with two inlets , one inlet going to the PCV and the other inlet to the valve cover breather lines, and the outlet to the turbo inlet pipe.
EDIT: just read this : Quote:
also , as I understand vented catch can is not a god idea as it will allow unmetered air into the system |
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11-18-2020, 05:13 PM | #333 |
Techno Sapien
Moderator Member#: 449
Join Date: Oct 1999
Chapter/Region:
MWSOC
Location: Lawrence, KS
Vehicle:2019 Impreza Sport Lithium Red |
Might as well put this here ADD W1 CC on 2019 Impreza Sport
https://photos.app.goo.gl/rNGgBQvBkKaiYtjA6 |
11-22-2020, 01:00 PM | #334 | |
Scooby Specialist
Member#: 437670
Join Date: Jan 2016
Location: VT
Vehicle:2005 2.5 SC OB |
Catch Can FAQ
Quote:
Blast from the past— I used to work with Kastle (in real life). Do you keep up with him? |
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01-23-2021, 11:39 AM | #335 |
Scooby Newbie
Member#: 408588
Join Date: Dec 2014
|
Just in case anyone is interested in 1957 "unmetered air" and emissions, scroll down to the 3rd paragraph in the article and look at the picture below it.
https://www.chevyhardcore.com/news/t...c-small-block/ |
08-21-2021, 05:48 AM | #336 |
Scooby Newbie
Member#: 524797
Join Date: Jun 2021
Location: Down Under
Vehicle:2010 XT Forester |
After seeing so many crudely drawn catch can hose routings and incorrect layouts I decided to put this together.
It’s based on the 08-12 WRX/XT intake, but the principle is still the same across the range. The position of the catch can is irrelevant in the diagram as it’s just for illustrative purposes. |
08-21-2021, 08:13 AM | #337 |
Scooby Newbie
Member#: 524797
Join Date: Jun 2021
Location: Down Under
Vehicle:2010 XT Forester |
Catch Can bracket
On the 08-12 WRX/XT there are not many easily accessible locations for catch cans. But for those running their intake in the guard (Process West system) there is plenty of available room.
I made up a bracket to mount them in front of the ABS module which allows easy access and a short hose route. |
08-26-2021, 09:54 PM | #338 | |
Scooby Newbie
Member#: 291995
Join Date: Aug 2011
Chapter/Region:
SCIC
Location: northridge
Vehicle:2019 sti world rally blue pearl |
sebastian323, Did you ever get this figured out? I was planning to do a 3 port catch can for my 2019 base STI also but I was concered about the sticky. Being a 3 port, the 2 hoses would go to each of the 2 inlets on the 3-port catch can. However, I am worried what is said about "capping the remaining nipped on the inlet".
Am I understanding this correctly, this setup doesnt catch for the CCV side and would require it's own catch can? I've watched youtube videos that this side doesn't even catch oil so is it still needed? Quote:
it looks the top can is for the hoses where the nipple would have been plugged in the method described as the wrong way. Last edited by jgc731; 08-26-2021 at 11:38 PM. |
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04-12-2022, 10:09 AM | #339 |
Scooby Newbie
Member#: 371012
Join Date: Oct 2013
Chapter/Region:
MAIC
Location: Martinsburg, WV
Vehicle:2007 WRX STi Blue |
looking for clarity on my AOS setup please
Reading through this and still having trouble getting a clear answer if my idea will work. Didn't want to start another thread if I didn't have to.
I am using a grimmspeed AOS, the one that hooks to the oil filler neck, and want to also do some engine bay clean up and make things look cleaner. Since I went with fuel rails and braided lines, figured why not make it all braided lines. Got the fitting kit to swap all the breather vents to -an fittings. The 3 that equalize the pressure across the block is easy. T all 3 lines together and done. The block port PCV is what I'm currently stuck on and need to know if I'm doing this right or wrong. I plugged one of the inlet tube ports since I think I'll only need one vs two. I got rid of the hardline that runs across the intercooler and teed the 2 PCV vents and ran that to one of the lower ports of the AOS, this part I know is right due to the instructions from the kit. I ran the top fitting of the AOS to the one inlet port I did not plug. This also seems to line up with the instructions. Here is where I deviated and am trying to figure out if this is right. I removed the entire pcv check valve assembly because now the port on the block is just a -12an fitting. I plugged the vac port under the throttle body that the pcv vent went to. And the port on the inlet that I said I plugged earlier is where this check valve assembly went to before. I then ran a -12an hose from that port to the other lower port on the AOS. Is that going to work and be safe to run? Guess my concern is that I removed the hard vacuum source from the system and now it relies on the slight vacuum from the inlet pipe before the turbo. Thinking it'll work since any extra pressure still gets vented back to the inlet hose through the aos. And yes, i know this AOS isn't the popular choice since it recycles the oil back into the block. But this is a DD and not a track car. Got this to help clean up the air going into the combustion side of the engine if I can. And then it spiraled into a cleaner engine bay project since the motor is out and being rebuilt atm. |
04-12-2022, 05:50 PM | #340 |
Scooby Newbie
Member#: 524797
Join Date: Jun 2021
Location: Down Under
Vehicle:2010 XT Forester |
Hope you kept the receipt.
Flatrions Tuning did multiple tests via measuring crank case pressure and that was by far the worst one. After their investigation many suddenly appeared for sale. |
04-14-2022, 04:26 PM | #341 |
Scooby Newbie
Member#: 371012
Join Date: Oct 2013
Chapter/Region:
MAIC
Location: Martinsburg, WV
Vehicle:2007 WRX STi Blue |
i saw that video. I think that setup wasn't plumbed right. But now I'm curious. I wanna tap into the crank and see what kind of vac and pressure I see once its running again.
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01-13-2023, 05:34 PM | #342 |
Scooby Newbie
Member#: 532826
Join Date: Jan 2023
|
Catch Can Question
I recently bought a catch can from Boomba for a 15+ wrx and it’s facing the wrong way?? I dunno if I’m just a noob and don’t know how to adjust it or if it’s a manufacturing issue but the hose things look like they should be facing the same way as the bolt and face to the side.
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