1947 Chief unique cam cover and oil pump

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  • cdf6333
    Senior Member
    • Nov 2008
    • 273

    #1

    1947 Chief unique cam cover and oil pump

    IMG_0192-001.JPGIMG_0193-001.JPG

    I had a 1947 mag Chief engine that was stolen back in Jersey during the 80's. It was apart and was strange in that it had the cam cover that I've enclosed a picture of. There was no vent on the cover. It also had a strange oil pump. The pump was like the square late 46 and 47 pump except that it had:
    a. a 3/8" pipe threads (instead of the usual 1/4" pipe threads) in the upper left corner. It used a vent/chain oiler like a Sport Scout
    b. inside the pump body was a machined "plug", with a rubber gasket on each side, to control crankcase pressure, similar to the breather disc.

    Are any of these on the road today? I believe the engine number was CDG 6999 but memory and all is iffy. I had these parts down at the shop and still have them. Seem low miles, original gasket was on the cam cover.
  • pisten-bully
    '46 Chief rider
    • Jul 2010
    • 1654

    #2
    Bob, possible that your cam cover and oil pump were set up for a stationary application, or did they come matched up to a frame? I've never seen one like that (but of course there's lots I've yet to see!)
    Pisten Bully is Harry Roberts in Vermont.

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    • OldMCRider
      New Member
      • Apr 2008
      • 12

      #3
      cdf, I have a cover like this, without the vent. I think it was from a 38 Chief.

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      • cdf6333
        Senior Member
        • Nov 2008
        • 273

        #4
        I'm pretty sure that the 1938 cover had the "fingers" that wrapped around the tappet guides, didn't it? I think that all Chief before mid 46 had the bigger cover. Any help here?

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