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Post by finatic on Jan 31, 2023 8:44:19 GMT -5
My sailfish is rated for maximum horsepower of 300 I have 150s nowadays Motors are so much lighter. I could Mount 200's with less weight so my question is horsepower ratings does it have to do with weight or strength of the transom perhaps both ? Of course insurance may also come into play.
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jerryk
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When not online I'm likely on Knot Online
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Post by jerryk on Jan 31, 2023 9:00:11 GMT -5
I believe ratings are factored for transom strength to carry the weight of the motor(s) as well as the "push" from them. In addition, there is consideration for safety of operation at speed and at all load levels expected, particularly WOT but the overall balance over all speeds matters too. In a repower situation you also should look at the condition of the boat overall including transom and stringers to ensure there isn't degradation or weaknesses anywhere that could impact safety that has occurred during the use prior to the repower. At the end of the day it is the manufacturer's certification on the line so they make the call as to the maximum, but having said that I have seen changes in maximum ratings year over year with what appears to be the same hull, so then the question is "why?" did it go up or down? My 275 DC is rated for, and equipped with, dual 200s but the same hull may be seen with twin 150s fairly often too, and in some cases that may be the max rating, I don't know. I doubt the insurance will be an issue for you if you go to 200s, but if you were to go well beyond that they may balk at providing coverage due to obvious overpowering.
Probably more important than whatever power you put on, you use it in a safe manner at all times.
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Post by lainiej on Jan 31, 2023 9:59:15 GMT -5
I don't understand why Sailfish lists differences in some boats ratings. I have a 2007 2360 and my max is 400 hp. Most are 300, no idea why this is the case. If I ever repower I will make the decision then to go with twin 150's or 200's.
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Post by fishnfool on Jan 31, 2023 10:54:05 GMT -5
Typically I do believe both come into play Glen. Although the power/performance difference between an F150 and F200 are pretty deminimis, that unless your insurance had an issue with it, all costs being equal, I wouldn't think twice about making that jump.
Lasting, my hull/transom is rated for up to 500hp, your boat was popped from the same mold with a plug, so I can't imagine that the construction of your transom is any different than mine, so I am thinking for your hull it is more about weight/balance than it is that your transom can't handle the horsepower.
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Post by finatic on Jan 31, 2023 15:00:07 GMT -5
For all the reasons above its an interesting topic. My 150's have a lot of life to go with only 1250 hrs. Lainiej, that's interesting we have the same year boat with 2 different horse power ratings.
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Post by fishnfool on Jan 31, 2023 15:36:16 GMT -5
I'll be going the Mercury V6 200 route W/DTS when I do repower.
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Post by finatic on Jan 31, 2023 16:52:46 GMT -5
I'll be going the Mercury V6 200 route W/DTS when I do repower. I've become a big fan of the new Mercury's. My only issue is there's not a reliable Mercury dealer in my area I would be willing to do business with. Routine maintenance on the new Mercury's is so much easier than Yamahas and less expensive
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Post by fishnfool on Jan 31, 2023 18:19:48 GMT -5
I've had my fill of Yamaha. The Mercs are so quiet too.
This guy's video really sold me.
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Post by finatic on Feb 1, 2023 5:02:41 GMT -5
Nice
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Post by noslackline on Feb 1, 2023 9:12:38 GMT -5
I'll be going the Mercury V6 200 route W/DTS when I do repower. We're heading into the 3rd season this spring with the Merc 3.4 V6 200's w/DTS. So far they have performing extremely well through their 200hrs of running time. They run on 86 octane, quiet, good fuel economy, very easy for self maintenance and the mid-range torque is formidable (can't beat displacement). So far so good! Merc_3.4V6_200s_Edit3.mp4 (1.92 MB)
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Post by outtadblue on Feb 1, 2023 9:18:27 GMT -5
Glen don’t repower, just buy a bigger boat. 🤣
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Post by fishnfool on Feb 1, 2023 10:11:47 GMT -5
I'll be going the Mercury V6 200 route W/DTS when I do repower. We're heading into the 3rd season this spring with the Merc 3.4 V6 200's w/DTS. So far they have performing extremely well through their 200hrs of running time. They run on 86 octane, quiet, good fuel economy, very easy for self maintenance and the mid-range torque is formidable (can't beat displacement). So far so good! View AttachmentI don't think I had any idea you had Merc V6's or I wasn't paying attention which is quite possible lol How many hours do you have on them now? Assume you came from F150's, would be curious how performance compares your most economical cruise speed and top speed? Are you running 4 blade props with them, assume you had 3 blades with your Yammys?
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Post by finatic on Feb 1, 2023 18:43:42 GMT -5
Glen don’t repower, just buy a bigger boat. 🤣 I know Richard your 2860 is still in the back of my mind.
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Post by outtadblue on Feb 2, 2023 10:20:42 GMT -5
Glen don’t repower, just buy a bigger boat. 🤣 I know Richard your 2860 is still in the back of my mind. It has your name on it. I would even pull it to you and fish for a weekend with you.
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