
Posts: 3508
Location: Elk River, Minnesota | Hiya,
Assuming this is a 90hp four stroke, you are better off than the two stroke. If it is the two stroke, you will be very disappointed. I have the first year model boat of the navigator 165 with the 90 inch beam (2005) and had a 90 yami two stroke on it. Needless to say, it was a bit sluggish out of the hole, and would top out at about 37. After a few testing mods like carbon fiber reeds, a shaved head, and exhaust tuner, and a 4" manual set back plate, I managed to get it to 40, but was still slow out of the hole.
I upgraded the motor to a Johnson 90hp 2 stroke and without any mods, I can hit 43 in the cooler months and water. Mid summer it is 42. Hole shot is much better as the increase in displacement made a huge difference.
On the 175 series of boats, I would say you will be right around 40 - 41mph if set up for efficient running. A steel prop will help a few things such as allowing you to move the motor up a couple of holes which will increase top end without sacrificing too much in handling.
No matter what, the layout of the navigator series is hard to beat. plenty of room up front, easy to rig to your liking, and manageable for smaller waters while still being able to tackle big stuff. Dry ride given you don't over-drive the conditions. Stable platform all around.
Steve |