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Crank Case Breather

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  • Crank Case Breather

    Can someone tell me if the crank case tube has the end of the tube crimped partially closed. Looks like about a 1/4 in. opening. This is a 259 engine.[?]

  • #2
    If you're talking about the road draft tube, it should be clean straight and open, with a stainless mesh screen held in place by a cotter pin. The angled end creates a lowered pressure at its end, drawing air through the crankcase as you travel. This air is supplanted at the oil filler cap, which also has a stainless mesh screen.
    "All attempts to 'rise above the issue' are simply an excuse to avoid it profitably." --Dick Gregory

    Brad Johnson, SDC since 1975, ASC since 1990
    Pine Grove Mills, Pa.
    sigpic'33 Rockne 10, '51 Commander Starlight, '53 Commander Starlight "Désirée"


    • #3
      Some of them didn't have the mesh in them.
      My 60 lark, 259 not only doesn't have the doesn't have the hole for the cotter pin.

      But any needs to be fully open. Otherwise it can't do it's job.



      • #4
        Studebaker stopped putting the wire mesh in the draft tubes at some point in the '50s (I think.....), plus recommended that the mesh be removed from earlier cars. There was a Service Bulletin/Letter to this effect.

        If anyone needs to know the specific Service Letter/Bulletin, I can dig it out.


        Visit The Studebaker Skytop Registry website at:
        Winston-Salem, NC
        Visit The Studebaker Skytop Registry website at:


        • #5
          I recently dealt with the draft tube mesh on this '54 Champion's engine. The mesh was clogged SOLID with hardened goo. I had to remove the cotter pin and dig out the mesh (which looks like copper to me). I then soaked it in carb cleaner and reinstalled it in the tube.

          Miscreant at large.

          1957 Transtar 1/2ton
          1960 Larkvertible V8
          1958 Provincial wagon
          1953 Commander coupe
          1957 President 2-dr
          1955 President State
          1951 Champion Biz cpe
          1963 Daytona project FS
          No deceptive flags to prove I'm patriotic - no biblical BS to impress - just ME and Studebakers - as it should be.


          • #6
            My friends and I have always used a piece cut from a copper pot cleaner to replace the cruddy/missing mesh.