Sea Ray 220da with 5.0l what prop is everybody running?

Discussion in 'Sport Boats' started by JayMay, Jan 12, 2019.

  1. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    Looking to see what props I'm able to use with my newly purchased boat. Currently has a 15.25x15p on it now
     
  2. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Welcome aboard!

    If you search, or read through other posts about this topic (of which there are MANY), you'll see that we'll need more data from you to help. Most importantly, what is your current MAX RPM at WOT? What's the RPM range for that '90 small block... 4200-4600? I'm not sure on that year - check on that. It would also be good to know how you plan on using the boat... what do you want to do with it? And, are you happy with the current prop? No reason to change if you don't need to.
     
  3. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    Thank you Lazy Daze I will need to get a shop tach as previous owner was giving me low readings or he never had it at WOT, also I'm from Michigan so I won't be on the water for a few months I assume but WOT range is 4200-4600rpm for sure
     
  4. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    Also for my sea trial impeller was bad so as soon as I gave it any throttle it overheated in a hurry so needless to say I'm fighting the urge to go out on it so maybe I'll be out there next month haha
     
  5. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    OK, gotcha. Once you get back in the water and have things running properly, then post back with that. Honestly, it won't be worth spending your time doing any research without first knowing that data. The built-in tach, while not "super" accurate, is usually accurate enough for this purpose. See what happens in the Spring.
     
  6. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    Well I decided overnight I was some prop pro so I've purchased a few props in hopes they'll be better than what's on there. Last owner was saying around 3800-4000rpms at around 25mph. So I picked up a SS 15.5x17p
     
  7. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    On average the best option is a 14 or 14 1/2 x 19
     
  8. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    Thank you Bt Doctur I had a feeling 15 pitch was quite small for the size of boat but do u think 15.5 diameter is going to be too big then?
     
  9. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Very generally speaking, when you go up in pitch, your hole shot and top end RPM goes DOWN. That's why it's important to get solid data BEFORE doing anything else. If you don't have good data, at best, it's a guessing game.
     
  10. 230weekenderUSC

    230weekenderUSC Member

    103
    Sep 6, 2013
    Mission Bay, San Diego
    1988 230 weekender
    5.0 Mercruiser EFI with Alpha 1
    My 230 with 5.0MPI runs a 4blade 14.75x15 aluminum solas. 4blade made all the difference in the world with getting on plane, holding plane, and cruise.
     
  11. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    That's very true Lazy Daze I hope I haven't wasted my money and 230weekenderUSC I thought from most my research here that 4 and 5 blade props were bad news for my boat... too much stress from my understanding
     
  12. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    Maybe I'll look into 4 blade since what I originally wanted
     
  13. 230weekenderUSC

    230weekenderUSC Member

    103
    Sep 6, 2013
    Mission Bay, San Diego
    1988 230 weekender
    5.0 Mercruiser EFI with Alpha 1
    After reading through your answers, I would get the boat running well and see where you are at in regards to rpm at WOT (confirmed if possible since our tachs are unreliable). Then come let us know and we can advise on size and pitch changes. Need a baseline though or you may be eating money on another prop.
     
  14. JayMay

    JayMay New Member

    8
    Jan 12, 2019
    90 Sundancer 220da
    Mercruiser 5.0l 305 alpha1
    I'll get it tuned up and change out everything I can think of as plenty of time with winter finally hitting up here so I'll post back soon as I hit the water.... Thank u all for the knowledge
     

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