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40’supersport prop question

Discussion in 'Ocean Yacht' started by John36mc, Jul 10, 2019.

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  1. Capt J

    Capt J Senior Member

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    Yeah, factory size minus 2" pitch is what I've found with my experience with Ocean's and the age of the boat.
  2. PamSails

    PamSails New Member

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    Great idea!
  3. Boomer

    Boomer Senior Member

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    I just called j & t and they gave me the info on the initial test runs 35 years later for my boat...how cool is that!
  4. cleanslate

    cleanslate Senior Member

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    Lol! See ! Thanks to YF and PacBlue they are going to be getting ALOT of calls all of a sudden ! Lol
    It's really cool to get that info, mine is from September 1980.
  5. Boomer

    Boomer Senior Member

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    Mine was from January 1984
  6. cleanslate

    cleanslate Senior Member

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    Sorry , for some reason i'm not getting emails sent to my personal email that there's activity going on this post so I've been MIA a few days.

    I'm looking for 24 x 26 three blade 1 1/2" shaft bronze or nibral Dyna Jets.
  7. cleanslate

    cleanslate Senior Member

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    I've got governor issues, The one that came with the boat that was always hunting at idle gave me 2450 or so top end RPM but when I, my mechanic , put this new governor on I lost top end RPM along with an idle screw that doesn't seem to adjust the idle very well .
  8. cleanslate

    cleanslate Senior Member

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    I would agree with you about Ocean as they were speed crazy probably ran the boats on 100 gallons worth of fuel and no water in the water tanks etc. etc....
    Light loads and with the tide ! Lol , to get those recorded speeds. Along with J & T pushing their engines to the limits.
    I'll put more effort into cleaning my existing propellers for stamped marks when I haul out in the beginning of December to see what's really on there now.

    Thanks for you excellent input.
    Keep in mind all, I do not run my boat like a tournament sport fish!
    1500/1600 rpms is my friend! Those old 471s hum along like a Harbor Tug!
  9. cleanslate

    cleanslate Senior Member

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    That's new...lol
  10. Capt J

    Capt J Senior Member

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    Then you need to change the governor first and get the motor running right and making WOT rpm's.
  11. cleanslate

    cleanslate Senior Member

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    I know.
    Well it's new , but I think my mechanic messed with the shims...IMO. Got another DD mechanic to call to take a look at things at some point.
    It's kind of low on the totem pole for me right now.

    Remeber my leaking / messed up rub rail issues? That's up next for me , my next big protect . Yay!