Catch Can FAQ - Page 4

indelible · 06-25-2006, 05:21 PM

I have 2 greddy style catch cans, what kind of element do you guys suggest I put in them? I'm weary of putting stainless steel wool inside of them because it might break up and get sucked into the engine.

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Saikou_Kun · 07-24-2006, 12:26 AM

Quote:

Originally Posted by indelible

I have 2 greddy style catch cans, what kind of element do you guys suggest I put in them? I'm weary of putting stainless steel wool inside of them because it might break up and get sucked into the engine.

Catchcans experience a drop in pressure, but I don't believe that vapor is "rushing" through them. I would be more weary of steel wool because water moisture will cause it to oxidize and turn to junk.
I would also avoid copper wool because it acts as a catalyst to oil and it sludges up in your catch can.

indelible · 07-24-2006, 12:31 AM

Quote:

Originally Posted by Saikou_Kun

Catchcans experience a drop in pressure, but I don't believe that vapor is "rushing" through them. I would be more weary of steel wool because water moisture will cause it to oxidize and turn to junk.
I would also avoid copper wool because it acts as a catalyst to oil and it sludges up in your catch can.

How about loofahs? those things you use in the shower.

Saikou_Kun · 07-24-2006, 02:09 AM

That is one thing I have wondered about, but I have worried about the temps of the oil vapor.
I like the idea of stainless mesh because it holds its shape and doesn't bunch up like softer materials such as green scotchbrite pads, and loofahs

It is important to keep whatever you put in a catchcan loose. If it bunches up, then it blocks the path of the oil vapor and defeats the normal function of the PCV system.

imisplacedmine · 07-26-2006, 03:26 PM

In reference to using the air compressor filter setups like this:

http://www.pbase.com/rsrock/oil_catch_can

Can I just buy two of those and the appropriate fittings and just run them inline between PCV/turbo inlet and crank case/inlet? Is it really necessary to run more lines around the engine bay? I would just like to cut the correct amount from the current lines and run these little filters inline to catch the oil. Please let me know if this would be a wise course of action.

twizhimself · 07-27-2006, 03:40 PM

anyone have the cusco wrx specific catch can installed? i need some flippin help on this one..i have that other hose from the can just kinda sitting there not going into anything..that cant be right...can it?

dougkmcse · 07-27-2006, 07:12 PM

As a filter element i used a lawnmower air filter. Cut it a little oversized so it fits tight. It works great. It is amazing the crap that comes out of the can.

imisplacedmine · 07-27-2006, 08:39 PM

Quote:

Originally Posted by imisplacedmine

In reference to using the air compressor filter setups like this:

http://www.pbase.com/rsrock/oil_catch_can

Can I just buy two of those and the appropriate fittings and just run them inline between PCV/turbo inlet and crank case/inlet? Is it really necessary to run more lines around the engine bay? I would just like to cut the correct amount from the current lines and run these little filters inline to catch the oil. Please let me know if this would be a wise course of action.

Cany anyone help me with this?

jays05 · 07-27-2006, 11:47 PM

I'm using two of those filters but I extended the lines a little bit. I don't see why your idea wouldn't work, as long as the filters aren't mounted sideways or upside down.

freddie32001 · 08-06-2006, 08:50 AM

This is a set up that I did on my 06 WRX STI.

TommyWRX · 08-06-2006, 08:56 AM

Quote:

Originally Posted by freddie32001

This is a set up that I did on my 06 WRX STI.

Wow, Nice and Clean! I like that. How did you get the hoses to bend like that?

txl146 · 08-07-2006, 11:25 PM

you can buy a set of hoses for around $70. They come ready to be installed.

RS drifter · 08-08-2006, 12:48 AM

more pics ^^^^

TommyWRX · 08-08-2006, 12:19 PM

Quote:

Originally Posted by txl146

you can buy a set of hoses for around $70. They come ready to be installed.

Where? Do you have links

vaj · 08-10-2006, 06:35 AM

I too would like to know where that TRICK set of hoses came from...

But I wonder if they'll clear a 20G.....

DanDiggler · 08-18-2006, 01:23 PM

Quote:

Originally Posted by vaj

I too would like to know where that TRICK set of hoses came from...

But I wonder if they'll clear a 20G.....

Ask and you shall receive...

http://www.iwsti.com/forums/showthre...dual+oil+catch

I'm not sure why this guy isn't selling these on all subie forums. From what ppl are saying its a quality product and he will do custom fabrication.

vaj · 08-18-2006, 01:38 PM

Thanks mang!

RS drifter · 08-18-2006, 02:07 PM

seriously... product of the year...

LittleBlueGT · 08-24-2006, 06:20 PM

I lose about 1 liter of oil every 800 miles. I had an oil analysis done and all is good. Power is good. Everything seems fine. (COBB stage2 with gutted DP) No oil leaks. Really don't know where the oil is going except the PCV system.

Will a catch can like this be beneficial for my daily driver?

STI spec D · 08-24-2006, 06:29 PM

Quote:

Originally Posted by LittleBlueGT

I lose about 1 liter of oil every 800 miles. I had an oil analysis done and all is good. Power is good. Everything seems fine. (COBB stage2 with gutted DP) No oil leaks. Really don't know where the oil is going except the PCV system.

Will a catch can like this be beneficial for my daily driver?

check this thread: http://forums.nasioc.com/forums/show...=970585&page=2

Rapidroy · 08-30-2006, 03:56 PM

I am looking for the PCV valve and plastic fitting part number for a 2004 STi

Thanks'

silver arrow · 08-30-2006, 04:27 PM

good read

Leadfoot77 · 09-05-2006, 04:06 PM

Quote:

Originally Posted by The Deliverator

The crankcase should always be under vacuum. Off boost, this vacuum comes from the intake manifold and inlet hos. On boost, the PCV valve closes, blocking off the connection to the intake manifold and all the vacuum comes from the air inlet. The reason this happens is because, on boost, the intake manifold has positive pressure rather than vacuum.

Unless I'm mistaken, the valve covers *can* see boost. If you T the valve covers into the crankcase vent line, you're going to be stuffing more foul air into the crankcase instead of sucking out what's already there.

Maybe if you kept the PCV valve attached to both the crank vent and the intake manifold and T'd the valve cover vents in between the PCV and the turbo inlet you'd be ok. Then again, maybe not.

Is this true for all wrx/sti's? Uncle Scotty said that it was only true for the 2.5 engines...

I'm trying to get to the bottom of the mystery as to whether i need one or two cans...

The Deliverator · 09-05-2006, 04:57 PM

Quote:

Originally Posted by Leadfoot77

Is this true for all wrx/sti's? Uncle Scotty said that it was only true for the 2.5 engines...

I'm trying to get to the bottom of the mystery as to whether i need one or two cans...

Well, Uncle Scotty knows his stuff.

The above is the conclusion that my research and reasoning led me to. It's entirely possible that I'm mistaken.

Maybe you can get some clarification as to why this would be true for the 2.5's and not the 2.0's?

chimchimm5 · 09-18-2006, 06:28 PM

Quote:

Originally Posted by DanDiggler

Ask and you shall receive...

http://www.iwsti.com/forums/showthre...dual+oil+catch

I'm not sure why this guy isn't selling these on all subie forums. From what ppl are saying its a quality product and he will do custom fabrication.

Wow. These look nice.

Not that I'm going to do it, but if one was ONLY to put a catch can on one of the lines (either crankcase or valve, is that right?) then which would be the prefered one? aka... which one spits more oil?

08-06-2006, 08:50 AM	#85
freddie32001 Scooby Newbie Member#: 116103 Join Date: May 2006 Chapter/Region: International Location: Ramstein/Kaiserslautern Vehicle: 2006 OBP WRX STI Blouch 2.5 XTR	Dual Oil Catch can Plumbing This is a set up that I did on my 06 WRX STI.

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06-25-2006, 05:21 PM	#76
indelible Scooby Specialist Member#: 99573 Join Date: Oct 2005 Chapter/Region: SCIC Location: Riverside, CA Vehicle: 2015 FXT SWP	I have 2 greddy style catch cans, what kind of element do you guys suggest I put in them? I'm weary of putting stainless steel wool inside of them because it might break up and get sucked into the engine. * Registered users of the site do not see these ads.

07-24-2006, 02:09 AM	#79
Saikou_Kun Scooby Newbie Member#: 115479 Join Date: May 2006 Location: Arizona Vehicle: 2000 FF pearl	That is one thing I have wondered about, but I have worried about the temps of the oil vapor. I like the idea of stainless mesh because it holds its shape and doesn't bunch up like softer materials such as green scotchbrite pads, and loofahs It is important to keep whatever you put in a catchcan loose. If it bunches up, then it blocks the path of the oil vapor and defeats the normal function of the PCV system.

07-26-2006, 03:26 PM	#80
imisplacedmine Scooby Newbie Member#: 102922 Join Date: Dec 2005 Chapter/Region: TXIC Location: Austin, TX Vehicle: 2012 WRX Wagon	In reference to using the air compressor filter setups like this: http://www.pbase.com/rsrock/oil_catch_can Can I just buy two of those and the appropriate fittings and just run them inline between PCV/turbo inlet and crank case/inlet? Is it really necessary to run more lines around the engine bay? I would just like to cut the correct amount from the current lines and run these little filters inline to catch the oil. Please let me know if this would be a wise course of action.

07-27-2006, 03:40 PM	#81
twizhimself Scooby Specialist Member#: 58294 Join Date: Mar 2004 Chapter/Region: Tri-State Location: easton, pa Vehicle: 2004 WRX / 1998 Foz SoCal F4 #20 / Area1320	anyone have the cusco wrx specific catch can installed? i need some flippin help on this one..i have that other hose from the can just kinda sitting there not going into anything..that cant be right...can it?

07-27-2006, 07:12 PM	#82
dougkmcse Scooby Newbie Member#: 85938 Join Date: Apr 2005 Chapter/Region: NESIC Location: Bellingham Ma. Vehicle: 2004 WRX WRB	As a filter element i used a lawnmower air filter. Cut it a little oversized so it fits tight. It works great. It is amazing the crap that comes out of the can.

07-27-2006, 11:47 PM	#84
jays05 Scooby Specialist Member#: 78165 Join Date: Dec 2004 Chapter/Region: South East Location: SC Vehicle: 05 STI 35r + e85	I'm using two of those filters but I extended the lines a little bit. I don't see why your idea wouldn't work, as long as the filters aren't mounted sideways or upside down.

08-07-2006, 11:25 PM	#87
txl146 Scooby Guru Member#: 32459 Join Date: Feb 2003 Chapter/Region: Tri-State Location: NY Vehicle: 02 WRX VF34 (SOLD) Junior Tuned 301whp	you can buy a set of hoses for around $70. They come ready to be installed.

08-08-2006, 12:48 AM	#88
RS drifter Scooby Specialist Member#: 7891 Join Date: Jun 2001 Chapter/Region: RMIC Location: BFE Vehicle: 2005 wrx STI Aspen MF white!	more pics ^^^^

08-10-2006, 06:35 AM	#90
vaj Scooby Specialist Member#: 59136 Join Date: Apr 2004 Chapter/Region: BAIC Location: Peoples Republic of Kalifornia Vehicle: 04/5 APRWidebody STi 500/500 - Snail Tuned	I too would like to know where that TRICK set of hoses came from... But I wonder if they'll clear a 20G.....

08-18-2006, 01:38 PM	#92
vaj Scooby Specialist Member#: 59136 Join Date: Apr 2004 Chapter/Region: BAIC Location: Peoples Republic of Kalifornia Vehicle: 04/5 APRWidebody STi 500/500 - Snail Tuned	Thanks mang!

08-18-2006, 02:07 PM	#93
RS drifter Scooby Specialist Member#: 7891 Join Date: Jun 2001 Chapter/Region: RMIC Location: BFE Vehicle: 2005 wrx STI Aspen MF white!	seriously... product of the year...

08-24-2006, 06:20 PM	#94
LittleBlueGT Scooby Specialist Member#: 96204 Join Date: Sep 2005 Chapter/Region: W. Canada Location: Winnipeg Vehicle: 2013 STI GR White	I lose about 1 liter of oil every 800 miles. I had an oil analysis done and all is good. Power is good. Everything seems fine. (COBB stage2 with gutted DP) No oil leaks. Really don't know where the oil is going except the PCV system. Will a catch can like this be beneficial for my daily driver?

08-30-2006, 03:56 PM	#96
Rapidroy Scooby Newbie Member#: 40983 Join Date: Jul 2003 Location: Idaho Falls, Idaho Vehicle: 2004 STI Blue	I am looking for the PCV valve and plastic fitting part number for a 2004 STi Thanks'

08-30-2006, 04:27 PM	#97
silver arrow Scooby Specialist Member#: 25859 Join Date: Oct 2002 Chapter/Region: South East Location: Foriderp Vehicle: 1965 MGB yellow 2008 Black Miata	good read