I own a 2003 Four Winns 170 Freedom with the 115 HP Yamaha outboard. Fantastically reliable and easy to work on outboard, but it's really quite a bit underpowered for this boat. The swap to a 150 HP Yamaha, whether the dual carb 150 or OX66 FI version, is a pretty simple affair for the DIY'er. I'd need a 20" shaft length version that matches my 115, but the controls and steering interchange. Pretty close to plug and play.
Has anyone done this swap before, whether Yamaha or Evinrude/Johnson/etc, and if so, can you report your findings? Was it worth the effort? Is there anything detrimental that I might not not considering, that you had issue with?
From what I gather, the 115 weighs about 320lbs, and the 150 is about 100lbs heavier. Does anyone think that's a significant issue?
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