60hp

G

gaultzie@yahoo.com

New member
I couldn't find a group just talking about motors so I am posting here. I purchased a 1986 22 ft Fisherman yesterday. It came with 1995 Yamaha 70 hp 2 stroke and 15 hp 4 stroke kicker 1998. I own a Tahatsu 2021 60 hp 4 stroke with 10 hours. Wondering if anyone could give me advice on putting the 60 as my main motor.
Any comments would be appreciated.
 
Depends on what your expectations are. What do you plan to do with the boat? just day fish and go swimming? Then yes it will work but your going to have a top speed around 16mph?? Not going to run in the 20s unless your lightly loaded. If you want to go cruising and take a bit of stuff you will be slower but if your a 10 mph guy then that works. My rule is to get as much power as you can for the same weight. I would run a 90 or a 115hp. Take a look at all the newer motors and go for the most hp and lightest weight. In this day and age there are not bad motors just what is more designed for you. Sell both motors you have and get something new and you will never have to worry about it.
 
Most likely you would be happier with more hp, but due to altitude hp loss our 80 hp Hondas were only putting out 61 hp on Yellowstone Lake & worked ok with a 10 pitch props. Even with a fairly heavy load it would do 19 mph wide open & cruise fine between 13 & 16 mph, so if you don’t mind the slower speed cruising & don’t want to go through the hassle & cost of another higher hp motor it might work out for you.

On edit, I do have permitrims & trim tabs also there’s a difference between our 2000 cruiser & your 1985 angler & I don’t know if that would make it better, worse or the same for you, compared to me.

Jay
 
I've always gone with the max HP recommended by the Mfg. Why?
Larger engine(s), under load, work less than smaller engines. What's dat?
It translates in, all other things equal, potential longevity of your engine(s).
Plus, smaller twin engines despite 2X maintenance, offer many advantages
over a big single engine. Gas misers may disagree, but boating is not exactly
a penny pinching recreation.

Aye.
 
Lots of good advice, and better resale value is also a feature when you decide to sell the boat. The 1986 C Dory 22, is the original flat bottom hull. These will plane slightly faster than the minimal dead rise boats after 1987.

Many times it is important to look at the displacement of various outboards. Remember the more torque, as well as hp is important (and rarely given).

1986 Johnson 70 hp. 56,1 cu in. (most common engine on new boats 1986.)

1995 70 hp Yamaha: 51.8 current engine

Your 60 Tohatsu: 52.9 cu in.

2023 Honda 60 hp: 61.0.cu in.

2023 Honda 45 & 50: 49.4 cu în.

2023 75 & 90 Honda: 91.4 cu în.

Based on this I suspect that your Tohatsu will give very close to the same performance as the current 2 stroke Yamaha. If you put on the Tohatsu, you will have to some re-rigging--probably binnacle and gauges, so that is a cost. You will have a more economical and reliable engine.

Is the current engine running well--and how many hours? You may get some reasonable resale on this motor if in good shaped, but it is over 25 years old.
 
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