M/T valve cover question

Discussion in 'Small Block Mopar Engine' started by Syleng1, Dec 4, 2018.

  1. Syleng1

    Syleng1 Karma is real and Life is short... FABO Gold Member

    Messages:
    691
    Likes Received:
    320
    Joined:
    Jul 5, 2005
    Location:
    North Franklin, CT
    Local Time:
    2:40 PM
    So I am going to use a set of M/T aluminum fined valve covers on a 318.

    All of the plug holes are knocked out- One is for the twist in fill cap and one is for a breather. The breather hole is like 1.5” i.d. I believe. Has any one successfully installed a PVC in the breather hole? I am assuming somebody makes a grommet for that purpose. I was told a newer Jeep has a PVC with the grommet for that sized hole already. Not sure. I have plenty of grommets for the breather but nothing that fits a pcv.
    Thanks!
    Joe
     
  2. rklein383

    rklein383 Well-Known Member

    Messages:
    1,298
    Likes Received:
    157
    Joined:
    Dec 2, 2005
    View My Photos
    Local Time:
    1:40 PM
  3. roccodart440

    roccodart440 Well-Known Member

    Messages:
    4,831
    Likes Received:
    3806
    Joined:
    Apr 19, 2010
    Local Time:
    2:40 PM
    I matched one up at the local autozone
     
    • Agree Agree x 2
    • Thanks! Thanks! x 1
    • brian6pac

      brian6pac Well-Known Member

      Messages:
      2,935
      Likes Received:
      1441
      Joined:
      Nov 15, 2016
      Location:
      N.E.Ohio
      Local Time:
      2:40 PM
    • TrailBeast

      TrailBeast Slightly Twisted Member

      Messages:
      18,926
      Likes Received:
      5138
      Joined:
      Mar 11, 2011
      Location:
      Arizona
      View My Photos
      Local Time:
      12:40 PM
      On a side note pay some attention to how flat the cover rails on your heads are.
      Sometimes with flat cast covers on stock heads don't like to seal very well due to the rails on the heads being humped up higher in the center.
      I second the Autozone suggestion for a grommet, and I have also gotten them from Summit going by the measurements of the opening in the cover.
       
      • Like Like x 1
      • Syleng1

        Syleng1 Karma is real and Life is short... FABO Gold Member

        Messages:
        691
        Likes Received:
        320
        Joined:
        Jul 5, 2005
        Location:
        North Franklin, CT
        Local Time:
        2:40 PM
        • Agree Agree x 1
        • Syleng1

          Syleng1 Karma is real and Life is short... FABO Gold Member

          Messages:
          691
          Likes Received:
          320
          Joined:
          Jul 5, 2005
          Location:
          North Franklin, CT
          Local Time:
          2:40 PM
          I’ll try the Summit route and call tech assist.
          Maybe they can shed some light on this subject.
           
        • Syleng1

          Syleng1 Karma is real and Life is short... FABO Gold Member

          Messages:
          691
          Likes Received:
          320
          Joined:
          Jul 5, 2005
          Location:
          North Franklin, CT
          Local Time:
          2:40 PM
          One of the other options I thought about last night was making a conversion part that pops into the larger grommet and the pcv sits in almost like the 66 Commando 273 has on the valve cover. - Looks like a small breather but is actually a pcv assembly.

          Making it out of an old breather is the start I guess. I was hoping with this thread that somebody out there had used a set of these valve covers and could show me what they did to make them work- besides welding in a piece of aluminum and starting fresh which may be my only option.
          Joe
           
        • toolmanmike

          toolmanmike FABO Staff Staff Member FABO Gold Member

          Messages:
          32,731
          Likes Received:
          14498
          Joined:
          Jan 18, 2006
          Location:
          Iowa
          View My Photos
          Local Time:
          1:40 PM
          There was a thread about these grommets weeks ago. I don't know if I can find it or not.
           
          • Thanks! Thanks! x 1
          • 383Scampman

            383Scampman Well-Known Member

            Messages:
            985
            Likes Received:
            318
            Joined:
            Nov 24, 2013
            Location:
            New Hampshire
            Local Time:
            2:40 PM
            I have 2 sets and I used a Mr. Gasket Gromet package , actually I used 2 grommet packages to make one . I'm thinkin' the PVC hole is 1.240" but I'm confused about which hole I'm thinkin' about . Having a senior moment . But the grommet package will let you install the PVC . Do I make sense ?
             
          • Mattax

            Mattax Just the facts, ma'am FABO Gold Member

            Messages:
            4,007
            Likes Received:
            1968
            Joined:
            Feb 7, 2013
            Location:
            Phila. Pa
            Local Time:
            2:40 PM
            • Thanks! Thanks! x 1
            • rklein383

              rklein383 Well-Known Member

              Messages:
              1,298
              Likes Received:
              157
              Joined:
              Dec 2, 2005
              View My Photos
              Local Time:
              1:40 PM
            • rklein383

              rklein383 Well-Known Member

              Messages:
              1,298
              Likes Received:
              157
              Joined:
              Dec 2, 2005
              View My Photos
              Local Time:
              1:40 PM
            • rklein383

              rklein383 Well-Known Member

              Messages:
              1,298
              Likes Received:
              157
              Joined:
              Dec 2, 2005
              View My Photos
              Local Time:
              1:40 PM
              I put in a brand new grommet in my 408 this year, but I don't remember where I bought it. Sorry. Rod

              IMG_4666.JPG
               
              • Thanks! Thanks! x 1