Oil catch can ? Best way

  • Coffeygr
    Coffeygr
    Junior Member
    • 11
    #1

    Oil catch can ? Best way

    So I’ve read all 7 pages of the Pcv/catch can routing and discussion and i can’t find a clear answer of how to route a catch can on our vgs
    so i guess my real question is, is it better to get 2 catch cans (one for each side)- i don’t mind cleaning/emptying 2 tanks
    or a 4 -10an fitting catch can ( http://www.jegs.com/i/Vibrant-Perfor…SABEgJa_vD_BwE )

    or would the Cusco oil catch tank on the zstore page work with out cars ( http://www.thezstore.com/page/TZS/PROD/10-2072 )

    or do what careless did with his custom catch can
  • edizzle89
    edizzle89
    Member
    • 82
    #2
    I just T'd into the factory hose between the valve cover and the intake. That way it still flows just as Nissan intended it to just with a catch in the line.

    Also I just used a water/air separator for air compressors as my catch can. They use a low micron copper filter which makes a great baffle and are only around $25. All you have to do is seal the fitting in the bottom of it.
    1 Photo
    if you're gonna be dumb you gotta be tough
  • Coffeygr
    Coffeygr
    Junior Member
    • 11
    #3
    Originally posted by edizzle89 View Post
    I just T'd into the factory hose between the valve cover and the intake. That way it still flows just as Nissan intended it to just with a catch in the line.

    Also I just used a water/air separator for air compressors as my catch can. They use a low micron copper filter which makes a great baffle and are only around $25. All you have to do is seal the fitting in the bottom of it.
    Are you running a breather on the driver said valve cover ? Also it looks like your running -10an lines ? That’s looks pretty nice honestly lot simpler than i was expecting, and it works as intended?
  • edizzle89
    edizzle89
    Member
    • 82
    #4
    I think it's 5/8" hose, and I had a breather on the other side but my setup was tuned for just MAP and didnt have a MAF. Not sure if pulling air not metered by the MAF would cause any issue.
    if you're gonna be dumb you gotta be tough
  • Coffeygr
    Coffeygr
    Junior Member
    • 11
    #5
    Originally posted by edizzle89 View Post
    I think it's 5/8" hose, and I had a breather on the other side but my setup was tuned for just MAP and didnt have a MAF. Not sure if pulling air not metered by the MAF would cause any issue.
    I’ll try a catch can on the passenger side and breather on other and see what happens with nistune
  • jy1235689
    jy1235689
    Member
    • 59
    #6
    Well, in each spot that a catch can would be, you can substitute a bmw oil separator (looks like a funnel with 2 tube inlets) and plumb the drain port to high on the oil pan.

    no mess and no emptying.
    1984 GLL 300ZX NA to VG30ET Engine Swap Big Turbo
    1987 Auto Rare Kouki Slicktop Velvet-Cake (NA2T in progress: parts sourced)

    Comment

    • 260DET
      #6.1
      260DET commented
      08-27-2018, 05:33 PM
      Interesting, I guess they have a one way valve to prevent back pressure from the pan entering the separator. What model BMW's?
    • jy1235689
      #6.2
      jy1235689 commented
      04-15-2019, 08:59 PM
      Beat me to it. I had this idea after changing the separator on my 740il.