C3 oil pan problem - NCRS Discussion Boards

C3 oil pan problem

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  • Ed Driscoll

    C3 oil pan problem

    Hi Guys,
    I had a leak in the oil pan of my 68 327/300. original pan w/ that long baffle on the inside. the shop manual says the following, "if crankshaft was rotated while the pan was off, place timing mark at the 6:00 position". The crank was not rotated while the pan was off, so I didn't rotate to the 6:00 posistion. I noticed that while I was putting it back on, the oil pick up would hang up on the edge of the baffle. I thought I'd jiggled it past the baffle into the correct position and I sealed and re installed the pan. It socked up flush and bolted in with no problem. All fluids filled to proper level. When I started the car, an amazing, clunk clunk sound (very much like bad main bearing) comes from the engine. I don't want to run it like this, but has anyone ever had a similar problem with the pan. This rotating info has me wondering if I should have rotated the crank regardless of whether or not it had been moved. The oil is not thin from fuel overage, the engine was rebuilt about 700 miles before it was "barned" and it was driven after that with no problems. This is the only thing I've done other then replace spark plugs. I'm stumped.
    But the interior is done, and it looks real purty.
    Thanx
    Ed
  • John H.
    Beyond Control Poster
    • December 1, 1997
    • 16513

    #2
    Re: C3 oil pan problem

    Ed -

    Sounds like the oil pump pickup was bent during pan installation and is playing tag with a rod cap or counterweight. The "rotation" note is just to create more removal/installation clearance at the front of the pan; if you set the balancer timing index mark at 5 o'clock or so, the front counterweight will be up out of the way so there's more clearance. Time to pull the pan off again and see what's amiss.

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    • Ed Driscoll

      #3
      Re: C3 oil pan problem

      Thats what I think is happening. I think it (oil pick up) got hung up during the instalation. I'll pull the pan tomorrow and do a thorough inspection of it and the oil.
      Thanx
      Ed

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