Is 20hp Enough?

Another round of will it plane.

What are the chances a 93 Johnson 20hp will plane out my Lowe R1655TN?
Expected speed with the right prop?

I will spend most of my time trolling and I am sure it will be great for that but,
I will need to get to a good spot first.

I have a 25 yamaha on my 1648 Alumacraft. It will run about 28 mph with just me and my fishing gear. My decks are pretty heavy. I had an 18 hp evinrude and it ran about 22 mph.

I think a 20 will plane your boat out, but it won't be a speed demon.

I had a 25hp 4 stroke yamaha on my G3 Proteam 165. The only way to get it on plane was to be by myself, or have the other person sit in the front.

And that is why I sold it.

So iffy depending on how much weight I put in it.

I can live with 22mph. Plus I think this later 20hp is supposed to be a lot stronger than the old 18s.

I still think I will try to make a deal on it. Supposedly it was "only used four times".

Is your boat welded? That would be a significant weight difference. Mine is riveted. Sounds like yours is wider also.

I got 22mph with my old 18 with just me and my fishing gear. It fell off hard with another person in the boat.

Being under powered is a pain. If it's a good deal snag it, but depending on fishing habits it may not be enough. I commonly run 20 miles round trip in a day of fishing and it's nice getting there and getting back at 30 mph.

I upgraded to a 25hp because I got a great deal, but I'd love to have a 35hp on mine.

Yes it is welded. About 400 pounds of hull.

I don't know that the price is all that great but a pre emissions
low hour two stroke does appeal to me. Plus it's the only long shaft tiller I have found.

Is this one of those motors that can be bumped up with a carb swap?

I'm believe it could be upgraded to a 30hp.. here's link about doing it https://forums.iboats.com/showthread.php?t=274566

But if it were me I would just buy a 30hp unless the 20hp is just too good a deal to pass up.

That Iboats link is for an older series engine. Not sure if it applies.

The bigger carbs and intakes are listed in the 20hp parts book.

Using a 20 HP Nissan 4-stroke on my G3-1652VBW. Typical load on outboard is 1100 lbs. (Hull: 400, outboard: 124, fuel/battery: 76, people/cargo: 500, total weight = 1100 lbs.) Top speed is 20+ MPH with this load, gets up on step easy, I'm happy with the performance.

Phil_R said:

Using a 20 HP Nissan 4-stroke on my G3-1652VBW. Typical load on outboard is 1100 lbs. (Hull: 400, outboard: 124, fuel/battery: 76, people/cargo: 500, total weight = 1100 lbs.) Top speed is 20+ MPH with this load, gets up on step easy, I'm happy with the performance.

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Thanks for the specs.
I would be very happy with that kind of performance.

Not very often I would want to go over twenty in a flat bottom in the Oklahoma wind.