1939 Evinrude Elto Ace water pump.

Home Forum Ask A Member 1939 Evinrude Elto Ace water pump.

Viewing 7 posts - 1 through 7 (of 7 total)

  • bobmyers67-gmail-com


    Replies: 3
    Topics: 1
    #10734

    I am trying to restore my great grandfather’s outboard. My dad had it in the attic for years and told me it was air cooled. I took it apart and found the water tube caked with 50 year old mud. I cleaned it out, gases it up and was thrilled to find that it started right up and weakly pumped water. Today, I took apart the water pump and discovered the lower impeller is very worn.

    I am not sure what to do. Is there a place to get these? Is there a substitute?

    Also I cannot figure out how the lower impeller spins. It does not seem to be touching the drive shaft. Does it just spin on friction from the flange on the bottom of the upper impeller (which looks to be welded to the shaft)?


    Attachments:


    bobmyers67-gmail-com


    Replies: 3
    Topics: 1
    #80538

    Note. Lower impeller is an alcoa 101934


    leeinnh


    Replies: 27
    Topics: 4
    #80543

    Actually–it looks pretty good. Should work ok. I wonder if the water tube to the head got clogged as well?
    Also, running in a tank or barrel, the water exiting looks sporadic until the spark is advanced and increases speed–


    garry-in-michigan

    Lifetime Member
    Replies: 3583
    Topics: 31
    #80549

    Actually not good – It should be tight on the shaft and have NO metal to metal contact. The bronze bushing in the gearcase that supports the driveshaft is excessively worn. Drilling and taping the bottom of the shaft for a stainless steel screw filed off to get the proper clearance will compensate for the ware. Those old cork seals were only marginally effective. Modifying the gearcase to accept modern seals is easier said than done, but possible. Use John Deere Corn Head Grease for lubrication. It is more water tollerent. You may find a good used pump impeller – OR – find some one with a 3D printer that could duplicate that lower impeller for you . . . 😉




    Later model Elto Ace used this gearcase. It was also used on the Evinrrude Sportsman.


    bobmyers67-gmail-com


    Replies: 3
    Topics: 1
    #80575

    Gary

    Thanks for the Schematic. I looked all over for one on google and could not find one for the ace

    I actually have a 3D printer. I was considering drawing up the part and printing it, but I figured that the plastic would not be strong enough. I guess I could print the collar a bit thicker than the original metal and pin it to the shaft like you suggested. Would you recommend ABS, PLA or some other material? Probably print with 100% infill?

    When I pin it I should ensure a small gap so no moving parts come in contact…. correct?


    bobmyers67-gmail-com


    Replies: 3
    Topics: 1
    #80624

    I did print an impeller in ABS. It is pumping water again. I am curious how it will hold up with use.


    garry-in-michigan

    Lifetime Member
    Replies: 3583
    Topics: 31
    #80636

    with no metal to metal (or Plastic) contact it should do well, as long as you don’t use your motor to dig channels through sand bars . . . 😆

Viewing 7 posts - 1 through 7 (of 7 total)
  • You must be logged in to reply to this topic.