yamaha F115

[captdan]

Looking to repower a 20ft MA. I want to repower with a 4 stroke and was wondering if a 115hp would work. Do you think it will be slugish with 3people? I know a 150 would work but I found a good deal on a 115hp. thoughts?

[BigLew]

Fr. Frank seems VERY happy with a Merc 90HP on his Seafari. I'm sure he'll chime in on the subject.

[eggsuckindog]

Those motors although very reliable are not the strongest horse in the barn - would be woefully under peowered. When new we never rigged any with less than the inline Merc 150's and they don't stack up to modern 2 strokes. It may be a good deal, I just don't think for you. Its not based on top speed, its handling at mid range to keep the boat up on top - drive-ability. It will suck fuel too, 4 strokes are not any better near wide open, their all hungry.
JMHO

[ricknewman]

I had a 115 Everdog 2 stroke on mine and was never happy. The fuel burn was good but on those few nice days when you can turn her loose it left you wanting.

[captdan]

Thanks for the imput. I just found fund a good deal on a yamaha
130hp 2 stroke with low hrs. Im thinking that should work fine.

[Fr. Frank]

Ye, I love my 5+ mile to the gallon with my 90 hp Optimax on my 20' Seafari. WOT mid-low 30's.

But I confess their are days I really miss pushing the boat past 50 mph like I could with the old V6 Merc.

The 130 Yamaha 2S may be just right. I love those "Tower of Power" 140/150 I6 Mercs, though.

[eggsuckindog]

Thanks for the imput. I just found fund a good deal on a yamaha
130hp 2 stroke with low hrs. Im thinking that should work fine.

would work much better, even a V6 150 Merc is pretty light too

[fins38]

I have this set up on a shorter bracket. Boat will run 37 knots top end 6100 RPM. Cruise @4000 RPM at 23 knots and only burn 5 gallons an hour. Haven't tried to plane on one engine, but for range and fuel burn she's set up perfectly. if you want specifics let me know.