Thread: Merc 4.5L 250HP
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Old 02-12-2017, 08:48 PM   #6
TiltonBB
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Quote:
Originally Posted by Dave R View Post
HP is HP, number of cylinders and displacement don't matter. I had a 21 footer with 220 HP; it was quite snappy and topped out well north of 50 MPH. Another 30HP with less weight would be sweet in a 21 footer.
That has not been my experience. In my opinion there is no substitute for cubic inches and torque.

Last season I changed from a 26 foot boat with the 8.1 375 HP motor to a 27 foot boat with the 6.2 380 HP motor. The 8.1 seemed to have twice the acceleration and overall power, much more than the boat with the 6.2 that claims 5 more HP. The 6.2 is average at best and works a lot harder to get up and go. The 8.1 never even broke a sweat and even with 15 people on the boat I could hardly tell the difference in performance.
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