Hemi Pcv

Discussion in 'New Hemi Engine Swaps' started by lefty70, Apr 9, 2018.

  1. lefty70

    lefty70 Member

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    Hello I’m trying to install an adequate pcv system in my Hemi. I am using a Mopar Performance efi manifold with a 4150 flanged throttle body. The pcv port is located directly under the fuel rail with only enough clearance for a tiny Toyota plastic valve. I’d like to plug that hole and make a hole in my plastic valve cover, but I’m not sure if that’ll work correctly. Thoughts?
     
  2. RealWing

    RealWing Well-Known Member

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    Suggest post a photo of the area.
     
    • Agree Agree x 1
    • Abodybomber

      Abodybomber Breaking street machines , since 1983.....:)

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      Camshaft, idle vacuum..kinda,tells us basic....
       
    • lefty70

      lefty70 Member

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      I can, my question is could I relocate the pcv. There isn’t enough room for one in the existing hole. There was an install kit available for the intake at one point, no longer available. Imagine the hole directly under the RH fuel rail with about 3/4” clearance. It’s a stock 2003-2008 style crate motor.
       
      Last edited: Apr 10, 2018
    • famous bob

      famous bob mopar misfit

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      I don`t see why u couldn`t install it between the rockers for clearance, and add a splash plate.
       
    • lefty70

      lefty70 Member

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      The red arrow shows the small pcv hole. It directly inline and covered by my Arrington fuel rail.

      HEMI MANIFOLD.png
       
    • famous bob

      famous bob mopar misfit

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      wow, sounds like a well thot out piece. maybe a special pcv for it ??
       
    • lefty70

      lefty70 Member

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      Yeah they had an install kit. No longer available. I work at a dealer and have looked at every pcv for possible fitment. I’m thinking I could also install a 90 degree elbow then use an inline pcv, maybe?
       
    • RealWing

      RealWing Well-Known Member

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      A 90 should work fine
      Jim
       
    • Hellcat Cuda

      Hellcat Cuda Well-Known Member

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      That manifold was used on the first MP 5.7 crate motor. I had one for the start of my build (evolved to a 6.2 HC). I'm pretty sure it had a 90 degree nippled fitting for an in line valve. I'll find my original paperwork that came with that engine. There's pics, etc.
       
    • lefty70

      lefty70 Member

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      Awesome!!!
       
    • Hellcat Cuda

      Hellcat Cuda Well-Known Member

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      So I could only find about half of my documentation from the MP 5.7 crate I had. I was able to find only one, very clear picture of the manifold that shows that port. However, it the carb version of the manifold but should still help. There is a straight, pressed fit, nippled fitting in that port for a hose with in line PCV valve. I remember a similar, but 90 degree fitting in the one I had.

      I think if it were my manifold, I would tap the hole and screw a 90 degree brass fitting in there and then put an in line PCP in there. Hope this helps.
       
    • 67Dart273

      67Dart273 Well-Known Member

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      There's nowhere in the throttle body for a fitting? No room to tap one?
       
    • Hellcat Cuda

      Hellcat Cuda Well-Known Member

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      This port goes into the head area that is exposed to the crankcase. It's not a vacumn port.

       
    • lefty70

      lefty70 Member

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      That's the same decision I've made. I'm going to take the manifold off to tap it. I can't think of a way to keep debris from not getting into the crankcase without. thanks for looking into this sir.
       
    • Buschi340

      Buschi340 Well-Known Member

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      true. It goes straight down into the pan. I put there a hose to an " Overflow bottle with breather "
       
    • 1973Barracuda

      1973Barracuda Well-Known Member

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      Any pics of that ?