My Eagle 170 w/ a 90 2 stroke came from the factory w/ a 13 1/4" x 17, I can't really give you a good top end for it right now, 'cause I'm still in the break in period, but I'd guess somewhere in the upper 30's. The motor is in the second hole. Yamaha doesn't have a performance bullatin for that boat/motor setup, only the Eagle 170 w/4 stroke variant which tops out a 41.4mph @ 5700 rpm (12 5/8" x 21) or a Eagle 175 w/ a 2 stroke 90, 13 3/4" x 17 which tops out at 36.5 mph @ 5500 rpm. Looks to me like you're in the ball park w/ your numbers.

As our boats are very similar, I'd also be curious as to what the best prop setup is. I've been considering purchasing a SS prop and I'd like to make the best choice before I drop that kind of cash.


Modified by Roberte at 2:26 PM 12/5/2009