ks13 wrote: Hence me saying if you made the diameter larger, more amounts of blowby (oil) will have an easier journey TO the head. Boost pressure as I stated before makes its way past the piston rings, down into the crankcase resulting in blowby gasess/oil being puked back into the head via the pipe with the hard 90 on it.
Easier journey to the head? So by restricting this 'path', you figure you can reduce blowby? The only thing this a restriction will do is create a greater pressure in the crankcase, which is what crankcase breathers are designed to alleviate in the fisrt place.
Blowby is blowby, if youve got it... fix the cause not the side effects. you cant reduce or restrict it.
other comments... I see no point what so ever in removing the PCV from a boosted setup. The PCV is there to serve a purpose, which is to flush the crankcase with 'fresh' air.
Draining any oil from blowby/vapour back into the sump is also not a good idea.