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Old 08-09-2009, 01:48 PM   #1
Scooby Newbie
Member#: 49783
Join Date: Dec 2003
Chapter/Region: E. Canada
Location: Ancaster, Ontario
2000 2.5rsti&98wagon

Default crank case hoses

The hoses were connected to the intake/airfilter, or im my case it was the COBB CAI that had 2 nipples to connect the hoses. So Right now I have 1 hose connected to one crankcase and the other hose is connected to the other crankcase and "t" to the other side of the PCV.

Now after being boosted I have these 2 hoses just sitting in the engine bay. After reading some threads on the emmisions system with crank case vapours on a N/A car:

"At the part throttle, the blow-by gas in the crankcase flows into the intake manifold through the
connecting hose of crankcase and PCV valve by the strong vacuum of the intake manifold. Under
this condition, the fresh air is introduced into the crankcase through connecting hose of rocker
At wide open throttle, a part of blow-by gas flows into the air intake duct through the connecting
hose and is drawn to the throttle chamber, because under this is condition, the intake manifold
vacuum is not so strong as to introduce all blow-by gases increasing with engine speed directly
through the PCV valve."

SO should I leave the hoses as is or I have heard to connect them to the intake before the turbo w/wo a catch can. But that seems to be pulling out the vapours rather than allowing fresh air to be drawn in.
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Last edited by freeride; 08-09-2009 at 02:01 PM.
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