I've been exploring options .. This is going on a truck with the cdr located on the driver valve cover by the way . I'm leaning towards running a line from the cdr location, to a catch can , then have it dump somewhere under the truck . So it would be similar to a rdt but with a catch can . What I need to know is if I NEED vacuum sucking the crank case vapor out . If not it would be super easy , but I'm pretty sure I read awhile back that it requires a slight vacuum . Another thought .. Why not use a large pcv ? I've seen them at general automotive stores , and one in particular would slip right in the factory gromet.
If vacuum is not needed , what are your thoughts on making a catch can with an inlet and a valve cover type k&n filter on the outlet ? I would think it would take less pressure to go through this system than it would to over pressurize the crank case and blow out seals / dip stick tube .