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Hello, I've been tossing around the idea of re-powering my 1989 15'. I currently have a 2008 Yamaha 70 two stroke and have been looking at the 90 etec because Yamaha doesn't have the 90 in their line up anymore. My question is has anyone powered their 15 with this outboard? I'm just nervous about the weight of it, 320lbs is kind of a lot. What are your thoughts?
I'm not worried about over powering my 15 with a 90. Everyone here in Sitka ak puts 85's and 90 two stroke yamies on their 15's it's not unusual to see here. My question is weight. The 90 two stroke Yamaha weighs 290..? I'm pretty sure and the etec 90 is up to 320. I'm just worried that will be too heavy to be hanging off the back of the boat. But was hoping somebody has done it and can tell me how it worked out for them. I don't want to dish out 10k for something that won't work in my favor.
You have to worry about stability in addition to excessive power. I know people have greatly overpowered their whalers but just because someone else does it doesn't mean it's not a foolish thing to do. As for the difference between the Yamaha 4 stroke 90 and the F70, it it my understanding that there is only a 2 to 3 miles per hour difference on a Montauk 17 so I'm pretty sure there wouldn't be much difference on a 15 foot hull either.
I winter in Ft. Myers and summer in St. Joseph, Michigan. It’s now about 12 years since I’ve joined this group. I gave my 1972 whaler to my daughter and sold the 17’. Bought an O’Day 28 sailboat and sailed on Lake Michigan. Yesterday I bought a 2005 130 Sport.
