HP Required for GW

[BOBDEVLIN]

I plan on repowering a 20 foot Grady White Weekender. It now has a 2 stroke 175 on it. Can I get by with a 150 HP Four stoke? Yamaha does not have a 175 and I hate to jump to 200 HP.

[Parthery]

Depends on how you use it...if you don't pull skiers and don't care about hitting 40 mph, the F150 will be all right.

I'd hunt for a 200 HPDI....they are great motors and its a good fit on that hull.

[Bob's Cay]

I would second the 200 HPDI recommendation. Repowered my 20' Overnighter with one in 2002. Great engine and great match for the boat. The extra HP allows a good cruise speed while keeping the engine in the "sweet spot".

[RBallou]

I have a 1999 GW 20' walkaround (208 Adventure) that I repowered in 2006 from a 200 hp Mercury Optimax (a competitor to the Yamaha 200 HPDI) to a 150 hp Mercury Verado (a 4-stroke that competes with the Yamaha F150). The performance is fine with a top end of 38 mph, whereas the 200 produced about 42 mph. You can plan on getting about 3.8 mpg at cruise with a 4-stroke 150.