Cruising Sailors Forum Archive

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• How easy is it to get to your raw water impeller?
  • Is it the 2GM20F? ( 2GM20, 3GM30, is the same story)
    • Yup, 2GM20F. BTW...
      • That is correct - 3000 rpm continuous would not be a problem, but
        • Thanks... I noticed that this engine does "sip..."
          • ...they are one of the all-time great Yanmar engines (other than that backward water pump)
        • IT's not just the RPM -- it's the load on the engine trying to drive the hull at "over pressures"
          • Sure, no problem... but I think in my case, I have been way too conservative.
          • Yes, I think you are exactly right...
            • ...another mitigating factor, obviously, is prop size and pitch...
  • Yeah, it's a pain in the a...
    • Kind of thing that makes you want to get it done on a maint schedule...
      • should have said... do it on a regular maint schedule.
  • impeller
  • Speed Seal
    • The new Yanmar impellers have a slightly different compound...
  • How do you know what impeller you need?
    • Gene: CALL Mack Boring (or some other Yanmar Distributor)
    • If you have the 2GM20F this is the number...
    • Surprised the model of the raw water pump isn't on the plate.
    • Globe Rubber----
      • Globe impellers
        • I did not have good luck with them...
        • I have not ever used one, but ...