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Thread: UL Oil puking from cam cover

  1. #31

    Re: UL Oil puking from cam cover

    Quote Originally Posted by Rubone View Post
    24020-51. It was never part of an original UL engine but is needed for the reproduction shafts and without it the oil just runs out the end of the shaft and isn't directed to the rods.
    How is the end of the OEM pinion shaft plugged?

  2. #32

    Re: UL Oil puking from cam cover

    The flutter valve is what returns oil inside the cam chest cover interior (not the chest itself) into the case.

  3. Re: UL Oil puking from cam cover

    Quote Originally Posted by Kozy View Post
    How is the end of the OEM pinion shaft plugged?
    I too would like to know this.

    Quote Originally Posted by panic View Post
    The flutter valve is what returns oil inside the cam chest cover interior (not the chest itself) into the case.
    Ok, that makes sense. I got a new flutter valve in the mail but haven't installed it yet. The service manual says air should only go one way, but this new one seems to do both? Does it matter?

  4. #34

    Re: UL Oil puking from cam cover

    Yes, it does, it's supposed to "one way". IIRC there is a tiny triangle of sheet metal secured at 2 corners, the 3rd one flaps open and closed in response to case pressure changes.
    The original plug is some black substance (?) just poured/pressed in place.
    What was recommended back (by Uncle Dudley) then was to drill this out 1/16", and plug the overflow hole next to the bushing in the cover to get full-time oil to the pinion. Also seen WR pinion shafts with an annular groove through the existing hole for the same effect. Good? Bad? IDK.

  5. Re: UL Oil puking from cam cover

    My pinion shaft screw arrived today..... Does anyone know the torque spec for that screw going into the pinion shaft end???? I'm assuming high temp locktite would be a good idea also.

  6. Re: UL Oil puking from cam cover

    Blue Loctite is fine, it won't come out. It needs to be removable to true the wheels.

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