questions about pcv system & idle air control valve with boost???

[uncle_louie83]

ok....ive owned turbo'd hondas before...but the 240 is a different platform and i need some answers...ok...on the stock intake pipe there is 3 hoses on the passenger side...a thick hose that goes the the valve cover...a medium hose that goes to the idle air control valve and a third small hose i do believe goes to the throttle body...when i go boost i dont want boost pressure shoving into the crank case/ head thru the valve cover port....i do not know if shoving 10 to 20 psi of boost into the the idle air control valve will hurt it or not...it didnt on my hondas but they were built into the intake mani without any hoses...and the third small hose that goes to the TB (i think)...where do i reroute all these hoses. I was going to make a catch can system for the pcv system but what about the others...plus one more question...on the bottom the of the intake manifold there are 4 small hoses...1 off each intake runner that goes into a metal tube and then that connects to this small metal box that bolts to the lower timing chain/oil pump cover....what do i do with that...i would think boost will shove thru those hoses into the front timing cover and cause boost pressure to go into the intake tract....god i need some insight cause this design just confuses me just a tad....help?

lewis

[95_240sx]

I just have a little filter thing on the valve cover. And all the stuff going to the lower timing cover PCV crap is all still hooked up, I believe there is a check valve in there somewhere, but i could be mistaken, I havent ever had a problem with it. As far as the IAC, I dont have one to use with the intake manifold I use.

Rick