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Repower Considerations - Added HP vs Added Weight
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<blockquote data-quote="DaleH" data-source="post: 463996" data-attributes="member: 15636"><p>On my 16 foot StarCraft V-hull tin boat I went from a 40 to a 60 and never looked back. One day I had a little over 1 gallon in one of the tanks and ran at cruise for a good 8 miles before she ran out of gas, that’s pretty good! And the power was there when you really wanted it or when carrying more people.m</p><p></p><p>I had the prop pitched for a standard load of 3 to 5 people in it and if alone I’ll be right at the rev limiter, but I don’t cruise at WOT anyway. But will run there for at least 15-minutes every trip on the way back in, just help clean out the carbon.</p><p></p><p>Bob Stearns, a noted marine author, once rigged and tested the SAME boat with a 75, 90 and then a 115hp outboard motor; each pitched properly and set up for best performance for motor mounting height. The 90 was the best overall choice, only 1 MPH slower at cruising speed (than the 115) but much improved efficiency in MPG. At WOT, it was 3-4 MPH slower, but like I said ... who runs there? The 90 was more efficient than the 75, which while not lugging, was ‘struggling’, so one had to run it st higher RPMs.</p><p></p><p>I think I’d get the 60 myself ...</p></blockquote><p></p>
[QUOTE="DaleH, post: 463996, member: 15636"] On my 16 foot StarCraft V-hull tin boat I went from a 40 to a 60 and never looked back. One day I had a little over 1 gallon in one of the tanks and ran at cruise for a good 8 miles before she ran out of gas, that’s pretty good! And the power was there when you really wanted it or when carrying more people.m I had the prop pitched for a standard load of 3 to 5 people in it and if alone I’ll be right at the rev limiter, but I don’t cruise at WOT anyway. But will run there for at least 15-minutes every trip on the way back in, just help clean out the carbon. Bob Stearns, a noted marine author, once rigged and tested the SAME boat with a 75, 90 and then a 115hp outboard motor; each pitched properly and set up for best performance for motor mounting height. The 90 was the best overall choice, only 1 MPH slower at cruising speed (than the 115) but much improved efficiency in MPG. At WOT, it was 3-4 MPH slower, but like I said ... who runs there? The 90 was more efficient than the 75, which while not lugging, was ‘struggling’, so one had to run it st higher RPMs. I think I’d get the 60 myself ... [/QUOTE]
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