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  1. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    I am with you on not wanting to swap props or run stainless on a pontoon. I am pretty happy with the 4 blade 14P 4 blade. It is much smoother at all RPM than the 3 blade 13P I had on there, so the update is a big win for me. I may eventually try the spitfire 4 blade 13Dx12P, but hard to...
  2. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    Sounds like you were having too much fun! To some extent, you are asking a lot of a 115 HP motor which also makes it a bit more challenging to find one prop that does it all. 115 is as much weight as I would put put on a 24' twin toon boat. That pretty much forces you to pick your poison on...
  3. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    I can't go any lower with the motor. I did check how cavitation plate lines up and it is pretty good. The water lines on my pic are a bit misleading because, water rolls out the back and where the tank sits and the boat rises about 2". I am fairly convinced that what I thought was...
  4. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    Posting back with results. Just installed a new 14x14 4 blade prop today and it is a big improvement. good responsive turning at low speed and very smooth feel at all RPMs. Could go a bit higher than 5300, but I am very happy with how the boat is performing now. Still getting nice hole...
  5. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    TY for the response. It is sitting as low as it will go. bolts are in the top hole. The 13P black max does snap me back real good if I hammer it on a hole shot, and everything seems great up to 4200 RPM. I am about to order up a 4 blade spitfire with the hope that more aggressive...
  6. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    I am dialing in some info on what might be a good choice on a new prop for my 2021 Harris Cruiser 210 Pontoon, I did use the mercury prop finder tool which has been generally helpful in the past with my fishing boats, but also using some info I captured myself. I have the 13P Black Max right...
  7. pwiseman

    Low rpm’s on 2007 Mercury 60hp EFI at WOT

    Gut feel is 60 HP should be enough to plane out a 16 footer without any trim unless is over 2000 lbs or maybe more than that. Seems like that would be well over typical though. I suppose it could be your tilt/trim not performing with load, but have not heard of that before.
  8. pwiseman

    Low rpm’s on 2007 Mercury 60hp EFI at WOT

    Any chance your weight changed? A few hundred lbs would make it harder to plane and keep your RPMs lower than max. I had a 16 footer and would end up using 2 props. One for fishing 3 people with livewells full and one for lighter loads. needed to step down a pitch when loaded to plane out...
  9. pwiseman

    Outboard issue

    I watched your video again and what you have is a 6 beep alarm. if you google that, you will find that there are a sorts of things that can cause it. Sounds like bad sensor or lose wire and overheat is pretty common, but could be something more serious like low oil pressure. The vibration...
  10. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    TY. They are 25" logs. I believe the logs are 21 foot and the boat overall is 22 foot. I have actually been considering a 4 blade as some people have said it helps with navigating tight turns, My slip is a bit tough in and out. Maybe the 4 blade would help with both issues.
  11. pwiseman

    Outboard issue

    It sounds like you are getting some cavitation once you get up to around 4100 and it gets worse as you go up. By change are you low in back end like I am? see the pic below. At 4000 RPM, I would say you are moving pretty good and "limping down the lake" is probably overstated quite a bit...
  12. pwiseman

    Outboard issue

    High Rev Beep on Merc should be around 6K RPM. If I recall correctly it is one beep not several and it won't go into limp mode for a short overrev. If it ran fine for 3 years, you might be taking on water somewhere. Ran ok for a few weeks after you took it in and then started acting up again...
  13. pwiseman

    Horn Constantly Blows When Battery Switch Is Turned On?

    If that is the only symptom, you might just have a bad horn or switch/button. I would check the switch/button first. Might be a really easy fix.
  14. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    Thanks. This is my first pontoon and I did not want to end up underpowered. If I had it to do over, I would go with a high thrust 60 to knock off 100 lbs or so. Fortunately, the cavitation is not horrible and I really don't want to be zooming around at WOT or pulling tubes. It does ride...
  15. pwiseman

    Need advice on fine tuning a new pontoon (minor cavitation)

    I posted last year for help selecting a new boat and recieved a lot of great info. I ended up with a 2021 Harris Cruiser 21 with a Merc 90 CT. Overall I am very happy with the boat and most of the time it is the wife and I. I noticed that when getting up around 4900 rpm (22 MPH from GPS)...
  16. pwiseman

    Pontoon Motor Selection questions

    The factory 13 pitch seems pretty good so far. I am close to done with break in now. 4500 RPM with 2 peeps was reading 22 mph on GPS. have not pushed it to wide open yet. will be taking 8 people out today and that should give more info too. very impressed with how quiet the motor runs...
  17. pwiseman

    Pontoon Motor Selection questions

    update - I am close to completing breaking and expect to be there over the weekend. It came with a 13 pitch and that is doing fairly well overall so far. I have not gone to wide open yet but briefly took it to 4500 RPM and speed on GPS was reading 22 mph with about 500lb load. will have 6-8...
  18. pwiseman

    Buying a ‘toon advice

    Hope you stumble on a good find. Seems like they set pricing so it is hard not to Break Out Another Thousand!
  19. pwiseman

    Re-power options 25' 1996 Brunswick Spectrum Cruise DLX pontoon

    I don't have any info on the seapro. I can say that other info here about older boats and 4 strokes is spot on and you really do need to watch weight. Yamaha 50/60/70 is a 1.0 liter that weighs around 260 lbs Yamaha 75/90/115 is 1.8 liter that weighs around 375 lbs Merc 75/90/115 is 2.1...
  20. pwiseman

    Re-power options 25' 1996 Brunswick Spectrum Cruise DLX pontoon

    Going over the max HP on the sticker might cause some challenges with insurance or if you get stopped by law enforcement. Even if you take steps to make your boat safe with the 140, it might not be worth the hassles you you could run into. Suzuki 140 gives you more HP for the same weight as...
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