GUYS!! help out a rookie with his pcv routing
05-20-2016, 12:35 AM
#1
GUYS!! help out a rookie with his pcv routing How are you guys routing your hoses and PCV system with and without catch can? I have a ls6 valley cover and I'm getting excessive oil In my intake, don't have a catch can yet but I know I really need one.. ls6 valley cover goes to the intake port, and I have a hose from DS valve cover to PS valve cover at the rear and PS valve cover at the front I have a hose going to the TB... what am I doing wrong here? btw only have about 500 miles since I did my 408.. thanks in advance guys and gals
05-20-2016, 06:06 AM
#2
That all sounds feasible to me. Could block off the rear ports on the driver and passenger side. The LS6 valley would feed to the port on the manifold (the lower port), and then the port on the TB should go to the front of the passenger valve cover.
Do you have the newer revised valley cover? Earlier covers still utilized an external PCV. 2004 and later were redesigned for an internal PCV. If you have the earlier cover, and aren't running a PCV, perhaps that could be causing the issue?
Otherwise, the catch can would be spliced into the line from the valley cover to the manifold port. You'd probably want to mount on the front of the passenger side head. Run a new line from the valley cover to the can, and then from the can to the manifold port. If your valley cover requires a PCV, though, the catch can doesn't replace that need - you'd still want to run the PCV along with the can.
Do you have the newer revised valley cover? Earlier covers still utilized an external PCV. 2004 and later were redesigned for an internal PCV. If you have the earlier cover, and aren't running a PCV, perhaps that could be causing the issue?
Otherwise, the catch can would be spliced into the line from the valley cover to the manifold port. You'd probably want to mount on the front of the passenger side head. Run a new line from the valley cover to the can, and then from the can to the manifold port. If your valley cover requires a PCV, though, the catch can doesn't replace that need - you'd still want to run the PCV along with the can.
05-20-2016, 11:24 AM
#3
Its possible to get some back pressure to the throttle body port (on high rpms and shutting the throttle quickly). I am putting a check valve there b/c I got some oil flowing back to the TB from my valve cover. It is normally the clean air intake line. The caveat is that my catch can is Mighty Mouse which has a built in pressure relief (with filter), a lot of other cans don't have that so you could build a lot of pressure if you installed the check valve like I describe.
05-22-2016, 06:01 AM
#5
GUYS!! help out a rookie with his pcv routing Its possible to get some back pressure to the throttle body port (on high rpms and shutting the throttle quickly). I am putting a check valve there b/c I got some oil flowing back to the TB from my valve cover. It is normally the clean air intake line. The caveat is that my catch can is Mighty Mouse which has a built in pressure relief (with filter), a lot of other cans don't have that so you could build a lot of pressure if you installed the check valve like I describe.
Wouldn't the excess pressure just vent through the dirty pcv line?