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Old 12-17-2013, 06:05 PM   #1
faster7581
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Yamaha 250 4 stroke power ????? 23ft Dusky

I'm rebuilding and repowering my Dusky 233 this winter. I had a 2000 Merc 250 EFI before, and with 4 divers, 12 tanks, gear ect, loaded, it did pretty good. I could feel the weight getting on plane, but wasn't terrible. I'm putting in a bigger fuel tank, about 30 more gallons, and I'm adding two more stringers and beefing it up, so there will be at least 300-400 more pounds more weight to the boat. I've been told that I would loose some power over my 250 EFI? Anyone out there running a 250 Yami on their similar size/weight boat? Like a Grady White.. I don't want to be unhappy with the 4 stroke Yamaha when I'm done. I also heard the Suzuki 250 has a bit more power than the Yamaha.. Any input would help.. How much better would it be with twin Optimax 150's? I really want to stick with 4 strokes if I can, two 4 strokes aren't in the budget..
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Old 12-17-2013, 06:15 PM   #2
Snapper Mangler
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

Depends what 250 your talking about. The new 4.2liter? If so I would get the new 300 4.2l yamaha
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Old 12-17-2013, 06:29 PM   #3
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

I'm looking used, so probably around a 2006-2009. not sure what liter it is.
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Old 12-17-2013, 06:43 PM   #4
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

Ok honestly you the f250 yamaha doesn't make as much power as the merc 250 efi. Its no dog by any means but 2 stroke vs 4 stroke.. especially with the extra weight you plan on adding.
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Old 12-19-2013, 06:32 PM   #5
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

anyone running something similar?
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Old 12-20-2013, 08:45 AM   #6
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

I am running a 23 WA Dusky with 2006 Suzy DF 250 4 stroke. Have around 1000 hours and still running strong. I regularly take 4 divers and 12 or so steel 120s out with no problem, although trim tabs are a must and it does sit slightly lower than when I had a 2 stroke. I would recomment you put the batteries towards the center to save some weight in the back. Check with Robert at Precision Marine and talk to him before you make a decision...he is a Suzy dealer. PM me, I can give you my # and we can talk...I just turned another guy on to a DF 250 that has a 23 Dusky center console and they finished up last week. Might be good to contact him as well to see how the new 4 strokes workout on the it since they have more power than mine.
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Old 12-20-2013, 09:16 AM   #7
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

I second the suzukis, they are good running motors, very popular down here in the keys...
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Old 12-20-2013, 11:21 AM   #8
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

I believe Rok (Louis Rossignol on here) has exactly what you are going to. Maybe shoot him a PM
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Old 12-20-2013, 02:36 PM   #9
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

I have a 23 SeaCraft Tsunami subjected to the heaviest dive loads you can imagine and my DF 250 Suzuki is more motor than I could ever want. I will second that Rob at Precision is the Man! If I need service I happily drive past more than a dozen Suzy dealer to come to him from Ocala.

Here is a pic of my sled..... 40 knots on a light day.
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Old 12-21-2013, 08:21 AM   #10
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

Thanks guys, I've heard alot of good things about the Zuke's. Also last Keys trip, I do remember seeing alot of them on the charter guys boats..
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Old 12-22-2013, 12:24 AM   #11
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

twin 150 two strokes will be faster.
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Old 12-23-2013, 09:46 AM   #12
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

Quote:
Originally Posted by johndoelman View Post
twin 150 two strokes will be faster.
Maybe, especially with a pair of light Etecs but how much faster and at what cost? Don't the Etecs require at least mid grade fuel and I think the oil is pretty pricey too..? They may be more fuel effecient and offset the cost but most all modern 2 and 4 stroke outboards are pretty much neck and neck when it comes to fuel efficency.

I wonder what kind of top and crusing speeds the OP is looking to get? In a 23 ft boat average sea conditions really limit the use of top speed applications unless you are blasting down the channel. The top end for my 23 foot utilitarian express with a tower top is right at 40 knots with an average dive load and 130 gallons of fuel. My comfortable cruise is 24 to 30 knots depending on seas and I can bank on 2 nautical per gallon for fuel overall.

Last Saturday I took this shot of my plotter when I was out configuring and testing the new autopilot Santa dropped off last week. 42 knots ain't too shabby for an eight year old DF250 with nearly 1700 hours on it.
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Old 12-23-2013, 10:29 AM   #13
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

I'm not super concerned with top speed. My 250 EFI pushed the boat to 46-48 mph on a flat day.. I never run WO, I get up on plane then back it down to 24-30mph depending on the condition. I just don't want to load the boat with gear and take for ever to plane. With my single I ran a jack plate and trim tabs, always planed out no problem.
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Old 12-23-2013, 10:33 AM   #14
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

Quote:
Originally Posted by johndoelman View Post
twin 150 two strokes will be faster.
Something else to consider, especially with a Dusky is the added weight from two engines.
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Old 12-23-2013, 10:33 AM   #15
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Re: Yamaha 250 4 stroke power ????? 23ft Dusky

On a side note, transom I done inside, stringers this week, hopefully finish those up in two weeks.
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