Worth Repowering a 260 Dancer from 5.0 to 383?

Discussion in 'Sport Cruisers' started by Matt1481, Jul 10, 2019.

  1. Matt1481

    Matt1481 New Member

    5
    Jul 10, 2019
    2002 260 Sundancer, 1999 180 Dual Console
    5.0 MPI, 115 Merc
    Just got a great offer to replace my 5.0 MPI with B3 drive to a 383 MPI. Any other users know or have heard anything about this repower? I love the boat hate how it is seemingly underpowered.
     
  2. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Does it come the electronics/computer? You may have to also change props. But if you want to do it, go for it.

    On the flip side, my 260DA also had 260HP and a B3. I never felt it is was underpowered. I could do watersports with it - even slalom ski. Are you sure you're operating it correctly (drive trim and tabs)... is the engine healthy... is the bottom very clean and are the props in excellent shape?

    How long have you had the boat? Have you owned a cruiser before?
     
  3. Matt1481

    Matt1481 New Member

    5
    Jul 10, 2019
    2002 260 Sundancer, 1999 180 Dual Console
    5.0 MPI, 115 Merc
    ALL is included with the drop in.......props may be needed tho.....all checks out with what you asked EXCEPT (and I am to blame) maybe the bottom could use a good blasting and re paint. props all good, good compression....the drive trim sweet spot seems to be just around the 1/4 mark. The trim tabs seem to be a sea anchor at times. Last year I was getting 32 MPH (GPS) at 4400 now i can't get over 28 MPH @ 4000 RPM but I am thinking my tach may be wacky as I believe the motor is all there. Could the bottom drag cause that much of a drop in performance?
     
  4. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    If you poke around this site for a while you'll find a host of things that can impact the performance of the boat. Dirty bottoms being the most common first item to consider...they can really slow a boat down...
     
  5. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Doesn't take much in regards to a dirty bottom to slow you down. I could get 40mph (GPS) with my '99 260DA. That was around 4,800 RPM.

    Trim tabs shouldn't be 'an anchor'. For top end speed, sure, get them all the way up. But they slow the boat down less than lowering the drive. For hole shot... drop both the drive and the tabs. The boat comes up nice an quick and perfectly level - even with only half throttle being used.Either you're not using them properly or there's an issue. Trim tabs are a WONDERFULL tool to have onboard! :) They are extremely helpful when used properly.
     
  6. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
  7. Matt1481

    Matt1481 New Member

    5
    Jul 10, 2019
    2002 260 Sundancer, 1999 180 Dual Console
    5.0 MPI, 115 Merc
    The bottom isn't "dirty" per say, it is fresh paint but I was considering having the guy around me that comes and "strips" it so you can start fresh. Yea I am kicking myself in the butt for trying to get away with "one more season". My gut is telling me I'm not getting 100% from the engine to the drive after reading some posts. Luckily I have access to merc diagnostic tools will let you know Saturday how that goes. Owned the boat since 2016 (350 HRS), sleeps me, wife and 10 year old for the weekend perfectly. Whats making this decision tough is the price for the install and motor (reman) is less than I ever would have expected.
     
  8. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    If there's no algae/scum, just bottom paint - even scary looking bottom paint - won't account for the performance difference you're seeing. On the other hand... no one, if the history of boating, has ever complained about having TOO much power ;)
     
  9. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Go for it, that 5.0 is a slug, I've owned 3 of them. 32mph feels soo sloow
     
  10. Matt1481

    Matt1481 New Member

    5
    Jul 10, 2019
    2002 260 Sundancer, 1999 180 Dual Console
    5.0 MPI, 115 Merc
    DAMNIT your both right! MY 180 with the 115 is tuned perfect WOT is 43-44 5200 RPMS, to put it in perspective a NEW 383 FULL DROP In is around 16K here, the price offered is less than HALF THAT for the reman.
     
  11. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Winter's coming, time to get busy
     
  12. Matt1481

    Matt1481 New Member

    5
    Jul 10, 2019
    2002 260 Sundancer, 1999 180 Dual Console
    5.0 MPI, 115 Merc
    WAs told a "week" for drop off/to pick up, Boat terms that is 10 to 364 days.......worst case the 18 takes a beating this year.

    P.S.-Just a quick thanks for all the input here it is appreciated gonna try all suggestions
     
  13. Happy Dayz

    Happy Dayz Active Member

    510
    Jun 26, 2017
    Sarasota, FL
    '06 260 Sundancer, 6.2, BIII, Kohler 5kw
    79' classic Kona Family Cruiser jet boat..
    6.2 w/ BIII, 502 w/ Berkekley
    i did my 260DA recently from a 6.2 to 383 (technically 6.3) and love it! still wish I had more power...
     

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