quick cath can question
Honda-Tech Member
Joined: Sep 2002
Posts: 483
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From: USA
Re: quick cath can question (zseeanz)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zseeanz »</TD></TR><TR><TD CLASS="quote">pvc to can to intake mani right? What about the valve cover vernt? Do you need to filter the air coming from there at all? </TD></TR></TABLE>
The pcv in the back of your block goes through a black box then goes to your intake manifold I believe. But It would be better to route that to your catch can rather than your intake manifold, then plug up the hole in your manifold. Also, your breather on the valve cover should be routed to the same catch can further releaving crank case pressure and not dumping it back into your intake. Here is the best method of doing a catch can setup on a turbo car or NA for that matter: http://www.theoldone.com/components/breather/
I have mine setup like that one except i removed the bottom drain that would drain back to the block with a drain **** to just drain it out manually. Also i made the I made a "T" so that both holes on the back of the block feed to one port on the catch can and the top port I used for the valve cover breather. Thats it and your done.
The pcv in the back of your block goes through a black box then goes to your intake manifold I believe. But It would be better to route that to your catch can rather than your intake manifold, then plug up the hole in your manifold. Also, your breather on the valve cover should be routed to the same catch can further releaving crank case pressure and not dumping it back into your intake. Here is the best method of doing a catch can setup on a turbo car or NA for that matter: http://www.theoldone.com/components/breather/
I have mine setup like that one except i removed the bottom drain that would drain back to the block with a drain **** to just drain it out manually. Also i made the I made a "T" so that both holes on the back of the block feed to one port on the catch can and the top port I used for the valve cover breather. Thats it and your done.
Member
Joined: Feb 2004
Posts: 2,451
Likes: 1
From: Pearl City, HI, USA
Re: (cooljerk187)
Question: Is it a good idea to, rather than use a catch can, simply route the vacuum half of the PCV system to the vacuum side of the turbo and vent the other to atmosphere?
The location between the filter and the inlet of the turbo is always under vacuum, whether it is the cylinders creating vacuum or the compressor. The standard location for a PCV hose (below the throttle blade) is under vacuum when the throttle is closed and under boost when the throttle is open. This tends to pull large amounts of oil in with it, since the PCV valve remains open while the differential built up in the crankcase relieves itself.
The catch can tries to simply retrieve this oil, but it still doesn't do anything about the cause of the oiling.
This is a basic drawing of what I am talking about:
Modified by beepy at 1:10 AM 2/18/2004
The location between the filter and the inlet of the turbo is always under vacuum, whether it is the cylinders creating vacuum or the compressor. The standard location for a PCV hose (below the throttle blade) is under vacuum when the throttle is closed and under boost when the throttle is open. This tends to pull large amounts of oil in with it, since the PCV valve remains open while the differential built up in the crankcase relieves itself.
The catch can tries to simply retrieve this oil, but it still doesn't do anything about the cause of the oiling.
This is a basic drawing of what I am talking about:
Modified by beepy at 1:10 AM 2/18/2004
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