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PROPER installation of a catch can!! Please!!!

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Old Apr 7, 2003 | 10:17 AM
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Default PROPER installation of a catch can!! Please!!!

Okay, I've read too much info on catch cans and how they should be installed!! Does anyone know the actual way to do it cuz I've read to place it on the valve cover where most people place their breather filters and then I've also read that it should go to you PCV valve and then to the intake manifold. So which one is it and if it's the PCV valve then should I get another one for the valve cover where the breahter filter is?
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Old Apr 7, 2003 | 10:23 AM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)

you connect one tube on the valve cover where people put their breather filters and connect the other tube to the intake(not the manifold) where the PCV connected to it.


[Modified by SH_LUDER, 6:24 PM 4/7/2003]
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Old Apr 7, 2003 | 10:59 AM
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Default Re: PROPER installation of a catch can!! Please!!! (SH_LUDER)

yea thas how i did mine.. no oil leaks for me... my friend did it the other way and his motor leaked like a bitch.. changed it and no more leaks..

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Old Apr 7, 2003 | 11:03 AM
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Default Re: PROPER installation of a catch can!! Please!!! (BoostedH23a1)

hopefully this will help a little


here is mine(sorry I dont have a pict of how the tubes connect to the valvle cover and the intake
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Old Apr 7, 2003 | 11:20 AM
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Default Re: PROPER installation of a catch can!! Please!!! (SH_LUDER)

thanks for the pics guys, but a few more questions. So are the people who are connecting one side of the catch can to the valve cover and then putting a filter on the other side of the catch can installing these incorrectly? What disadvantages or problems are there by doing it this way? As well, the catch can that I'm getting is an SRR one and I just want to reiterate here, so I basically take one nipple and run a line to the valve cover and then take the other and route it back to the intake stream?
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Old Apr 7, 2003 | 11:26 AM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)

I just want to reiterate here, so I basically take one nipple and run a line to the valve cover and then take the other and route it back to the intake stream?
yup thats how I did mine. I have had it on for about a year with no problems what so ever. No leaks and Have picked up about 1 1/2 cm of oil that would have made it back into my engine. (I love my catch can)
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Old Apr 7, 2003 | 11:37 AM
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Default Re: PROPER installation of a catch can!! Please!!! (SH_LUDER)

...so when is it necessary to have a catch can installed on your car?
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Old Apr 7, 2003 | 11:53 AM
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Default Re: PROPER installation of a catch can!! Please!!! (bentzj)

Don't put it on the breather. That's basicly useless. For 1 1/2 cm a year of oil that's such a waste. The breather is different for everyone. Many people get no oil ever coming out of the breather, and some people get a bunch. I never had a drop of oil coming out my breather, even with the turbo on. The clear line going to before the turbo remained perfectly clear.

You put the can inline with the PCV line to the plenum. Get an already baffled can, like the Moroso can, or baffle the can yourself using steel wool or custom baffles. The greddy cans pictured above are unbaffled.

If you want to do it with the TOO setup, you need:

- Moroso 85470 breather tank
- Fram FV294 PCV Valve
- Help! PCV Valve Grommet
- 3/8" NPT to 3/8" hose barb fitting
- 3/8" ID hose that's resistant to collapsing under vacuum

The first time I put this thing on, after 3 months of driving, my can was half full with water/oil gunk.

EDIT: What's odd is that SH_Luders diagram above, drawn by TOO shows it the way I'm describing it on the PCV line, but he's telling you to put it on the breather.


[Modified by DirtyLude, 3:58 PM 4/7/2003]
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Old Apr 7, 2003 | 12:13 PM
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Default Re: PROPER installation of a catch can!! Please!!! (DirtyLude)

This is exactly what I was talking about!! haha, so many differnt opinions, but anyway, I was more partial towards placing in line with the PCV valve so I think I'll try that. Do you happen to have any pics of where the PCV valve is and how I should go about hooking it up? As well, it will just flow inline from the PCV valve to the catch can to the intake stream that runs into the turbo inlet? Finally, I myself have a lot more oil coming outta the valve cover and I can see it begin to drip form the filter, so do you think it would be okay to run two separate catch cans? One from the valve cover as well as one from the PCV? Thanks guys
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Old Apr 7, 2003 | 05:10 PM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)

tap it into the intake.. that way it doesnt have to suck.. air just flows..
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Old Apr 7, 2003 | 05:23 PM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)

The can with the PCV valve with grommet on the bottom right. The filter isn't used.



Hooked up. Really old picture. That clear line collapses from the plenum vacuum within a few days. The only thing I've found that doesn't collapse is eather braided line, or silicon line. I'm using 10mm silicon hose right now.



You can mount the can farther away, but you want the lines to be as short as possible to reduce pumping losses.
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Old Apr 7, 2003 | 09:30 PM
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Default Re: PROPER installation of a catch can!! Please!!! (DirtyLude)

so in those pics dirty, the PCV valve which is located on the driver side of the valve cover, has a line that runs to the catch can and then there's another line that runs from the catch can to the intake manifold, where the old line from the PCV valve used to go? So in essence, the intake manifold gets the fresher air? If that's it, I think I'm finally getting it!! hahaha

Finally, I'm looking at your breather valve, you said that you didn't get very much in terms of oil condensation so I'm assuming that you just routed it back to the intake pipe to the throttle body. I get a pretty big amount of oil there so I'm wondering if I were to use a catch can on the other nipple above the oil cap, how would I go abouts hooking this up?

Oh yah, thanks for the pics man, they're freaking awsome!!
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Old Apr 7, 2003 | 09:51 PM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)




[Modified by Que_Lude, 10:52 PM 4/7/2003]
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Old Apr 7, 2003 | 10:08 PM
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Default Re: PROPER installation of a catch can!! Please!!! (Que_Lude)

so I'm assuming that I'm right!! haha Thanks Que_Lude!!That's an awsome shot!! So what did you do with your breather portion of the valve cover? Do you just have a filter on there or did you run yours back into the intake piping before the throttle body?
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Old Apr 7, 2003 | 10:29 PM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)

so I'm assuming that I'm right!! haha Thanks Que_Lude!!That's an awsome shot!! So what did you do with your breather portion of the valve cover? Do you just have a filter on there or did you run yours back into the intake piping before the throttle body?
It's basicially stock, just replaced with a 9mm hose that came with the greddy can. It's reinforced clear plastic tubing that doesn't work with the can because it collapses due to the oil vapor heat. I see no oil vapor residue at the breather side going to my CAI. If you get the greddy, make sure you put in some steel wool like the guy stated a few posts back. I put in a course variety in mine... good luck.
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Old Apr 8, 2003 | 10:23 AM
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Default Re: PROPER installation of a catch can!! Please!!! (Que_Lude)

It's basicially stock, just replaced with a 9mm hose that came with the greddy can. It's reinforced clear plastic tubing that doesn't work with the can because it collapses due to the oil vapor heat. I see no oil vapor residue at the breather side going to my CAI. If you get the greddy, make sure you put in some steel wool like the guy stated a few posts back. I put in a course variety in mine... good luck.
thanks again man and to dirtylude for the pics!

I just want to know how I can set up one on the breather cuz I'm pretty sure that I'll be needing to do this cuz mine is spitting out its fair share of oil vapors so if anynoe knows how to properly do this on the breather side, that would be sweet!.
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Old Apr 8, 2003 | 01:21 PM
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Default Re: PROPER installation of a catch can!! Please!!! (ludelvr)

I just have a breather filter on mine right now, but I don't get the oil spitting that some people do. If you want a can for the breather, I would get something small.

I'm making up a surge tank out of an aluminum hiking stove fuel bottle. I don't think it would be hard to make a nice catchcan out of a bottle like this and put a breather filter on top of it to allow filtered air to get in or escape. Total cost would be, maybe $20.00.

Holotype in our club made a PCV catchcan with a similar aluminum (water bottle)can filled with steel wool. If you want to go ultra cheap, with the PCV line oil seperator you can do something like that.


[Modified by DirtyLude, 5:24 PM 4/8/2003]
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Old Apr 9, 2003 | 08:26 AM
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Default Re: PROPER installation of a catch can!! Please!!! (DirtyLude)

i have my greddy hooked up like DIRTY LUDE and QUA LUDE
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Old Apr 9, 2003 | 07:40 PM
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Default Re: PROPER installation of a catch can!! Please!!! (ApexiAccord)

here's my greddy catch can - its been modified though and there is a drain plug on the button so i can easily drain out the oil...





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Old Apr 10, 2003 | 01:30 AM
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Default Re: PROPER installation of a catch can!! Please!!! (DirtyLude)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DirtyLude &raquo;</TD></TR><TR><TD CLASS="quote">I just have a breather filter on mine right now, but I don't get the oil spitting that some people do. If you want a can for the breather, I would get something small.</TD></TR></TABLE>

You can also modify the Moroso catch can seen in the above picture. All you need to do is cut it in half (in the middle). Then weld a divider in the middle and add 2 more inlets on the side. That way you will have a breather and a oil separator in one can. Run a hose from the valve cover to the top compartment of the catch can (an attach the moroso filter to the top) = that is your breather. Then separate the hose which links the pcv to the intake manifold, and run those 2 hoses into the bottom sealed compartment.

That's what I did and it works great!
p.s. I'll try to get my hands on a digital camera and get some pics of it.
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Old Apr 10, 2003 | 01:49 AM
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Default Re: PROPER installation of a catch can!! Please!!! (XES)

Here is a photochop job :


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Old Apr 10, 2003 | 04:55 AM
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Default Re: PROPER installation of a catch can!! Please!!! (XES)

i noticed you have your fan on the other side of the rad. does the car run cooler?i wanted to do this but i cant find a thin fan for under $150 cnd,i could also use the space for my air filter on the t66.
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Old Apr 10, 2003 | 07:59 AM
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Default Re: PROPER installation of a catch can!! Please!!! (crxludeT66)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxludeT66 &raquo;</TD></TR><TR><TD CLASS="quote">i noticed you have your fan on the other side of the rad. does the car run cooler?i wanted to do this but i cant find a thin fan for under $150 cnd,i could also use the space for my air filter on the t66. </TD></TR></TABLE>

if you're talking to me...the reason why i have my fan on the other side is because it's almost a neccesity because if i put the fan on the other side it might get in the way of the clutch slave line. i dont really know if it runs cooler, and that is an old picture with my stock vx radiator...i now have a del sol vtec dual core raidiator installed and yeah the fan is still on the other side. and i'm thinkin about going turbo and i might have to change how everything mounts especially my ac because i'm not getting rid of it because its my daily driver.
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Old Apr 10, 2003 | 08:00 AM
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Default Re: PROPER installation of a catch can!! Please!!! (XES)

You don't have to have 2 separate compartments do you? I mean, if it's all waste, can't they just drip into the same place? i Really like that idea! That's pretty sweet, I think I'll look into doing this cuz I was considering making one for the valve cover breather.

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Old Apr 10, 2003 | 11:47 AM
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Default Re: PROPER installation of a catch can!! Please!!! (jz)

here is a very nice well documented install at c-speedracing

http://www.c-speedracing.com/h...n.php
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