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  1. jestor68

    4.3 Mercruiser New Wakeboarding Prop

    Re: 4.3 Mercruiser New Wakeboarding Prop It is generally suggested to reduce an inch of pitch when switching from 3 to 4 blade in order to maintain rpm. But since you are slightly over on rpm, I would suggest you stick with a 17 pitch for the 4 blade. As far as aluminum versus SS; perhaps...
  2. jestor68

    Propping in Colorado

    Re: Propping in Colorado Your 5.7 L rpm range is 4200-4400 rpm(1988). Even though the prop selector calls for a 19 pitch at 5000 ft, it apparently is not working as you are only getting 4000 rpm. Dropping to a 15 X 17 will get your rpm up to 4300-4400 rpm; right where it should be; and...
  3. jestor68

    new transom

    Re: new transom My gut feeling is that an old tri hull with a 15 inch transom height is not rated for a 90 hp motor. Since it's rotted out anyway, why don't you get a proper boat(with a 20 inch transom)to put your 90 on? A guy a few blocks from me has a 16 ft Wellcraft Air Slot(no motor)...
  4. jestor68

    Tohatsu 50HP Prop advice needed...

    Re: Tohatsu 50HP Prop advice needed... RPM range is 5150-5850. Gear ratio is 1.85. You can throttle back, put the 15 pitch prop on there, or take another person with to pull the rpm down a little with the 13 pitch. Running it over the maximum recommended rpm will shorten the life of the...
  5. jestor68

    90hp FourStroke on 181 Mako Bayshark

    Re: 90hp FourStroke on 181 Mako Bayshark Sure; the aluminum 19 was on the list too. But for the most bang for the buck, I'd suggest either a Solas or Turning Point aluminum prop for the latest design and casting technology. And one these will get you on plane in about half the time; for $...
  6. jestor68

    90hp FourStroke on 181 Mako Bayshark

    Re: 90hp FourStroke on 181 Mako Bayshark WOT rpm range is 5K-6K. Your Mako has a 20 degree dead rise, which puts it into the deep V category, which explains the time to plane. I assume you're running a Mercury Vengeance prop, as that's the only SS Mercury prop available for your motor in a...
  7. jestor68

    Plane issue

    Re: Plane issue A Stingray and a Doel Fin are not even close to being the same hydrofoil. You bought the wrong one. A Doel fin will fit on just about any outboard or stern drive.
  8. jestor68

    Replacement Prop For My 1997 Yamaha 20HP Tiller

    Re: Replacement Prop For My 1997 Yamaha 20HP Tiller A Solas 9.9 X 10 ought to be a suitable replacement for your Yamaha prop. A Doel Fin Hydrofoil Stabilizer should get it on plane in half the time and help to eliminate the tendency to "porpoise". :) Or it might be a simple matter of...
  9. jestor68

    Need a Prop Recommendation For a Key West 1720CC w/90 yamaha 2stroke

    Re: Need a Prop Recommendation For a Key West 1720CC w/90 yamaha 2stroke Your motor is rated 90 HP @ 5000 rpm. The absolute optimal rpm is 5200-5300 rpm. The Solas with out perform the Michigan. One of these will plane you off in half the time without causing any speed lose. It's...
  10. jestor68

    Plane issue

    Re: Plane issue One of these would help to get on plane in half the time. It's called a Doel Fin. I believe IBoats carries them. What sort of WOT rpm are you getting with your current prop? I ask because most boats similar to yours are running 12-13 pitch props at the optimal 6000 rpm...
  11. jestor68

    82 Galaxie OMC 3.0L 140 hp Prop size

    Re: 82 Galaxie OMC 3.0L 140 hp Prop size I'm going to suggest a Solas Amita(aluminum) 13-1/4 X 17 pitch for a decent all around prop for your stated purpose(s). The number is 2411-133-17. Since your motor is a 1982, I'm not sure if it can pull a 19 pitch and still provide decent hole shot...
  12. jestor68

    2000 Mercruiser Bravo III propeller nut removal

    Re: 2000 Mercruiser Bravo III propeller nut removal Mercruiser Bravo III Prop Nut Wrench Tool; part # 91-805457T-1 for the removal/installation of the Bravo III Inner Prop Nut. If you Google "Mercruiser Bravo III prop removal" you will see venders that sell the tool. It isn't cheap(like...
  13. jestor68

    1970 60hp seletric, 14ft tri-hull. Prop suggestions.

    Re: 1970 60hp seletric, 14ft tri-hull. Prop suggestions. Yes.
  14. jestor68

    New to forum, eager to get into boating, need guidance!

    Re: New to forum, eager to get into boating, need guidance! 2006 Bayliner 19 ft deck boat. There you go. It's on ebay now for 13K. It has the 4.3 L Mercruiser. Located in Ten. Go on Boat Test. com to see a full test of the boat.
  15. jestor68

    DIY hydrofoil/stabilizer for small outboards on underpowered boats...... success!

    Re: DIY hydrofoil/stabilizer for small outboards on underpowered boats...... success! Best invention since the mouse trap! I discovered the Doel Fin in 1985 and have used it on every boat(4)since, including the current 23 ft boat you see to the left. :)
  16. jestor68

    Prop for staying on plane at low speed

    Re: Prop for staying on plane at low speed Your prop is OK, according to your WOT rpm. A Doel Fin will get you on plane and hold you on plane at a slower speed(about 10 mph). If you want to use a 4 blade, go one inch less pitch than your 3 blade prop. Solas props are hard to beat...
  17. jestor68

    Planing a Bayliner Capri

    Re: Planing a Bayliner Capri That boat had a dry weight of 1475 with an 85 Force. Drop 96 lbs for the 50 HP and it works out to around 1379 lbs empty. A quick run through a prop selector suggests a 15" pitch prop for it. But I would use a 13 pitch to get that 50 to rev up close to it's rpm...
  18. jestor68

    Quick help-prop!!

    Re: Quick help-prop!! If your's is the 1872TPCC, it weighs 780 lbs(boat).
  19. jestor68

    Any Bayliner Trophy 350 V8 owners out there? Need prop size info

    Re: Any Bayliner Trophy 350 V8 owners out there? Need prop size info Testing any prop with a "13" anywhere in the size would be a waste of time, as that is not even close to the appropriate size for this boat/motor combination.
  20. jestor68

    Choosing correct prop and jack plate height

    Re: Choosing correct prop and jack plate height A 21 or 22 pitch would be usual for that boat/motor combination. What are the compression numbers on the motor? It's 12 years old. The best motor height is dependent upon what you plan on doing today; trearing around or pulling a skier. At...
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