M/T valve cover question

Small Block Mopar Engine

  1. Syleng1

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

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    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

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  3. roccodart440

    roccodart440 Well-Known Member

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    I matched one up at the local autozone
     
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    • brian6pac

      brian6pac Well-Known Member

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    • TrailBeast

      TrailBeast Slightly Twisted Member

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      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.
       
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      • Syleng1

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

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        • Syleng1

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

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          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

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          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

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          There was a thread about these grommets weeks ago. I don't know if I can find it or not.
           
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          • 383Scampman

            383Scampman Well-Known Member

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            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 ?
             
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            • Mattax

              Mattax Just the facts, ma'am FABO Gold Member

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              • rklein383

                rklein383 Well-Known Member

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              • rklein383

                rklein383 Well-Known Member

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              • rklein383

                rklein383 Well-Known Member

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                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
                 
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