Has anyone repowered a yamaha 25. My ysm8 is shot. Diesel mechanic says probable not rebuildable. Has anyone found a new engine that will fit under the v birth? If so how difficult was the installation?
Repowering with a new engine is an expensive proposition, make sure the boat's value supports the investment. Check out the physical dimensions of your current engine and the space available and compare them to the Yanmar 10GM, Vetus 12, Westerbeke/Universal 12, Beta Marine 10 for fit. The Ysm8 is low profile and if the space is limited your choices might be limited to finding a used ysm8 or repowering with an outboard engine.