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    • Propeller Cupping – 38 Bayliner

      This topic has 10 replies, has 3 voices, and was last updated byNick 5 years ago

      April 2, 2019 at 8:53 am Hello…my name is Nick… I have a 1988 Bayliner 3870 repowered with Cummins 6BTA’s 5.9M’s, build 8206, Tranny gear at 2:1, WOT 2600…propellers 21x26x4 Nibral. My issue…I have some damage in the corner of the tunnel where the trailing edge of the prop has pitted a hole about 3/8″ deep apparently caused by water turbulence/cavitation. Right now I cruise at 2350RPM/16.5kts, WOT 2600RPM/22kts. I don’t w…

      Started by: Nick in: Boats & Repowers

      10 Replies
      April 8, 2019 at 2:48 pm Steve wrote: Sir, Are those the original propellers and were they adjusted when the boat was repowered? I had my prop serviced by Wilmington Propeller Service in Southern California. Talking with numerous others (including a Long Beach Harbor Pilot who has a fishing boat a few slips down), Wilmington Prop Service has a stellar reputation in the shipping industry. The owner there told me that generally all props in tunnels should be cupped. He ex…

      Last Post by: Nick posted: 5 years ago

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