Catch Can set up for NA Ka24e

[allmotorKA]

Originally Posted by s13pignose

do I leave the pcv still hooked to the intake manifold doing it his way?

If you use a catch can with a breather filter, then I would connect BOTH valve cover vent and crank case vent to it. Plug the port where the intake tube was connected to the valve cover vent. Plug the port where the PCV valve was connected to the intake manifold plenum.

If you connect the valve cover vent only (without connecting the crank case vent) then the intake manifold will be sucking air through the catch can breather. Here's why: Air flows through the catch can breather, to the valve cover, through the crank case, through the PCV valve, to the intake manifold plenum, and then to your engine. Take the valve cover off and look down the timing chain...guess what...you are looking into the crank case. The crank case and valve cover area are connected by a wide gaping tunnel created by the timing chain cover. You will have a large vacuum leak. Will your car run?...yes. Is it the right way to do it?...no.

Really, I wouldn't bother putting in a catch can. Why do you want to put it in?