Join Date: Mar 2006
Location: Cenla, Louisiana
Here is my setup. I think it is over engineered but I think it will work well. I wanted to retain the factory pcv type setup but also relieve excess crankcase pressure while in boost. I used 4 high flow check valves. Made a special adapter where the original pcv valve was in lower intake for that valve and there is one inline in the hose from throttle body to passenger valve cover nipple. And used 8an hoses from both valve covers to catch can. So in theory when the engine is under vacuum it will still suck air from lower intake and passenger valve cover like factory and the check valves at the catch can will be closed to not allow unmetered air into the crankcase. Then as boost starts to build the check valve in lower intake and inline to passenger valve cover nipple will close off and the catch can valves will open to allow pressure out. I think the cracking pressure on the valves I used is .7 psi I believe, its pretty low.
'91 Ranger, 306, 270HR14, Tri-y, RamAir, T5, 3.73, Aeromotive Sys, QH, LM2, Tunerview II, A9L, BE & EA
'89 Mustang coupe, 5.0, AOD, HO cam, 70mm Turbo, 60lb inj, 340lph, 3.27, QH, LC-1, A9P, Tunerview II
'98 Ranger 2WD 5.0, GT40, HO cam, 4R70W, 3.73, QH, SLL4