Who runs an oil catch can?
03-14-2006, 11:02 PM
#22
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Re: Who runs an oil catch can?
Labatt50: So for my setup (D16a6/T3), which catch can setup is best, the CB7, or the MS Paint diagram? (BTW on the drawing of the turbo setup you have two lines going to the catch can, one looks like its connected to the breather vent, and the other is connected to what? Is it connected to the PCV valve?
03-14-2006, 11:32 PM
#23
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Re: Who runs an oil catch can?
Originally Posted by 1991civicsi
Labatt50: So for my setup (D16a6/T3), which catch can setup is best, the CB7, or the MS Paint diagram? (BTW on the drawing of the turbo setup you have two lines going to the catch can, one looks like its connected to the breather vent, and the other is connected to what? Is it connected to the PCV valve?
and yes you are right, on the f22 i have the breather and the pvc valve on the valve cover.
03-15-2006, 05:11 AM
#25
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Join Date: Mar 2005
Posts: 272
Re: Who runs an oil catch can?
according to this pic
the breather hose in the PCV system is the air inlet and the PCV valve is the blow-by vapor outlet. on boosted applications the IM is pressurized which keeps the PCV valve closed and prevents crankcase ventilation.
i dont know if the way it is in the pink diagram works or not since its not the same way the stock PCV system works with an inlet and outlet. however since both lines are outlets it keeps the crankcase from pressurizing also. so i dont know...
to make it work more like the stock PCV system and keep the breather hose as an air inlet and the PCV as an outlet you can run it like this. with a slash cut or 90* fitting facing the filter on the pre turbo intake air is pushed in through the breather hose and sucked out through the PCV port and into the catch can and back to the vac from the pre turbo intake w/ a slash cut or 90* fitting facing the compressor.
or
this way..
this isnt a close circuit system like the above but but is a vacuum driven system. air is sucked in through the valve cover breather through the crankcase and out the PCV port into the catch can by the pre turbo intake vacuum.
ive seen setups on HT that are even simplier w/ open breather/vented catch cans w/ no vacuums at all. you just hollow out the PCV valve and run a line from the PCV to one end of the catch can, a line from the valve cover to the other end of the catch can, and put a filter on top. but open breather style cans are more expensive, but you can always T the breather tube and PCV line to one side of the can and put a filter on the other side. i prefer a vacuum assisted syste since i have a f22 (also true for H and D series) and theres no black box or freeze bolts in the back of the black that can be ported for ventilation ports.
the breather hose in the PCV system is the air inlet and the PCV valve is the blow-by vapor outlet. on boosted applications the IM is pressurized which keeps the PCV valve closed and prevents crankcase ventilation.
i dont know if the way it is in the pink diagram works or not since its not the same way the stock PCV system works with an inlet and outlet. however since both lines are outlets it keeps the crankcase from pressurizing also. so i dont know...
to make it work more like the stock PCV system and keep the breather hose as an air inlet and the PCV as an outlet you can run it like this. with a slash cut or 90* fitting facing the filter on the pre turbo intake air is pushed in through the breather hose and sucked out through the PCV port and into the catch can and back to the vac from the pre turbo intake w/ a slash cut or 90* fitting facing the compressor.
or
this way..
this isnt a close circuit system like the above but but is a vacuum driven system. air is sucked in through the valve cover breather through the crankcase and out the PCV port into the catch can by the pre turbo intake vacuum.
ive seen setups on HT that are even simplier w/ open breather/vented catch cans w/ no vacuums at all. you just hollow out the PCV valve and run a line from the PCV to one end of the catch can, a line from the valve cover to the other end of the catch can, and put a filter on top. but open breather style cans are more expensive, but you can always T the breather tube and PCV line to one side of the can and put a filter on the other side. i prefer a vacuum assisted syste since i have a f22 (also true for H and D series) and theres no black box or freeze bolts in the back of the black that can be ported for ventilation ports.
03-18-2006, 09:40 AM
#30
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