Toasted the K motor
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Toasted the K motor

  1. #1
    Senior Member rocket98's Avatar
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    Default Toasted the K motor

    We blew a brand new motor at Puddingstone a few weeks ago. Boat came in with no oil in the dry sump tank. I thought the scavanger pump failed. Sent the pump off to get inspected and it checked out fine. The puke tank had 3 quarts of oil in it. We usually only have a cup. Anyone have a quess what the problem is. I'm sure we got the mains and probally got some rods too.
    They older we get the faster we were

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    Senior Member wizbang's Avatar
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    Is there a scavage line in the lifter valley ?

    Do the valve covers vent to the puke tank or to the dry sump tank ?

  4. #3
    Senior Member rocket98's Avatar
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    Quote Originally Posted by wizbang View Post
    Is there a scavage line in the lifter valley ?

    Do the valve covers vent to the puke tank or to the dry sump tank ?
    No scavanger in the lifter valley. We have 3 in the pan. Valve covers vent to the puke tank.
    They older we get the faster we were

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    northern member Canuc's Avatar
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    so 3 qts in the puke take , no oil in the tank so was the rest in the pan or did it go out the puke tank vent ? did you forget to put rings in it ?
    Quote Originally Posted by gn7 If your ran a cammer your odds of finishing WERE ZERO.

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    Senior Member wizbang's Avatar
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    Quote Originally Posted by rocket98 View Post
    No scavanger in the lifter valley. We have 3 in the pan. Valve covers vent to the puke tank.
    I had the exact set up and it would do what your saying.

    Ran the valve covers to the dry sump tank and then one line from the dry sump tank to the puke tank.

    BUT, changed one of the pan lines to the lifter valley. I think when you get the engine up in rpm as you have it plumbed, the crank case
    pressure doesn't allow the oil to return to the oil pan ??????

  8. #6
    Senior Member rocket98's Avatar
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    Quote Originally Posted by Canuc View Post
    so 3 qts in the puke take , no oil in the tank so was the rest in the pan or did it go out the puke tank vent ? did you forget to put rings in it ?
    The oil is in the pan now. Building this motor is way above my pay grade. After using a bore scope you could see the cross hatching in the cylinders.

    .
    They older we get the faster we were

  9. #7
    steelcomp was here
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    What heads on this engine?
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    Senior Member rocket98's Avatar
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    Dart pro's^
    l
    They older we get the faster we were

  11. #9
    Already miss the 310/562 2manymustangs's Avatar
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    Quote Originally Posted by wizbang View Post
    I had the exact set up and it would do what your saying.

    Ran the valve covers to the dry sump tank and then one line from the dry sump tank to the puke tank.

    BUT, changed one of the pan lines to the lifter valley. I think when you get the engine up in rpm as you have it plumbed, the crank case
    pressure doesn't allow the oil to return to the oil pan ??????
    We would see the engines push large amounts of oil out of the valve cover breathers in our drag cars when spinning them really hard… Ended up making taller and taller stacks on the valve covers and ultimately a series of baffles in them before we could keep the mess under control…

    I would think that venting the VCs to the sump tank and then another line as high as possible off the top of the tank would help a lot…

    I have never built anything like this (sustained high RPM boat set up) so I’m prolly in for a BIG education when I get my Sanger plumbed and going this summer…
    Pat Eason, the voice of reason...

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