The 101 Association, Inc.
For the preservation and enjoyment of 1928 to 1931 Indian Scout Motocycles
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Oil in crank cases

  • 22 Sep 2021 1:46 PM
    Message # 11110806

    The notes from the builder says to drain the crank case after a ride. When draining the oil from the crank case between short rides, how much should be coming out?

  • 23 Sep 2021 12:48 AM
    Reply # 11112140 on 11110806


    I usually get about 500mL or something around that.


  • 23 Sep 2021 1:08 AM
    Reply # 11112176 on 11110806

    Oh... interesting discussion... now I wonder if I'm doing this correctly.

    What I do is take the top plug out after using the bike. 

    After a ride I get a little dribble out, not too much. I understood this was a good way to check if I have the injection rate set correctly. I.e. I should get a bit out, and that shows I have enough being injected, but not too much as that would show I am over injecting.....

    I also leave the plug out when I store the bike. Because I don't have an oil shut off valve and the injector passes and if there is a lot of oil in the tank it can drain into the crank case over time when the bike is stored over winter for example. And if I didn't drain this down to the upper plug the engine would be over filled with oil when I run it....

    So knowledgeable and experienced guys.... do I have this right?

    Last modified: 23 Sep 2021 1:09 AM | Jon Gillman
  • 23 Sep 2021 10:43 AM
    Reply # 11113237 on 11110806


    If you are right, I'm in good shape. That is what mine does.



  • 24 Sep 2021 1:34 AM
    Reply # 11114889 on 11113237
    Pete Boyd wrote:


    If you are right, I'm in good shape. That is what mine does.



    Yes I agree  But  always set my pump a little higher   . After a ride   I  drain the sump at Bottom plug  and replentish  with new oil  from hand pump ,Oil is cheaper tan rebuilds!  I have never used the hand pump when riding  .

  • 24 Sep 2021 1:41 AM
    Reply # 11114895 on 11110806

    I agree with Peter.  The oiling rate can be estimated by how much you get out of the the top plug after a normal ride. I change out all the oil in mine every ride as oil is cheap and with no filter a half litre is cheap insurance. I also leave the bottom plug out so the oil from the tank will just collect in a clean pail so I can pour it back in when it is time to ride again. 

  • 24 Sep 2021 9:02 AM
    Reply # 11115474 on 11110806

    Pulling the bottom plug each ride sounds like the way to go and I'll keep an eye on the top plug's volume first to see how the pump is doing.  Thanks for the collective wisdom!

    Last modified: 27 Sep 2021 1:02 PM | Pete Boyd
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