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Old 08 February 2013, 18:29   #1
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outboard fuel economy spread?

Hi,

I'm curious what the fuel economy spread might be for newer outboard engines, engines less than 5 years old. Bigger ones, 250hp or so.

I read a lot about some engines getting better economy but I'm not quite getting how big the difference might be? The best engines might get 10% 50% 100% better economy that the worst engines?

Let's try not to get into a outboard slander-fest, I know there are many strong feeling in this department.

Thanks,
Jason
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Old 08 February 2013, 18:46   #2
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Hi,

I'm curious what the fuel economy spread might be for newer outboard engines, engines less than 5 years old. Bigger ones, 250hp or so.

I read a lot about some engines getting better economy but I'm not quite getting how big the difference might be? The best engines might get 10% 50% 100% better economy that the worst engines?

Let's try not to get into a outboard slander-fest, I know there are many strong feeling in this department.

Thanks,
Jason
Hi Jason,

What are you actually asking here? Are you asking for people to give you their consumption figures for a particular engine model so you can perform some analysis. I can tell you what my engine boat combo gives but I don't know how it would perform with a different engine.
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Old 08 February 2013, 18:51   #3
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they all do 1ltr per mile lol.
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Old 08 February 2013, 18:52   #4
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they all do 1ltr per mile lol.
If only. I dream of 1 Ltd a mile.
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Old 08 February 2013, 18:54   #5
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oh man...
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Old 08 February 2013, 18:57   #6
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oh man...
Hmm. This is quite sad. I'm sure when I was younger my dreams were far more exciting.
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Old 08 February 2013, 19:00   #7
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I dont dream. strange. i uesd to but dont anymore..... :-)
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Old 08 February 2013, 20:19   #8
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Jason, you'll have to look it up on each manufacturers website. They'll probably give you burn number in gallons per hour at XXX rpm. Now, what XXX rpm translates into XXX speed is going to be unique to your hull. Everyone can take guesses but, I'd guess you'll be looking a fuel economy (and I use that term loosely) of just over 2 miles the gallon.

I've seen the fuel management readouts on a friends Hurricane w/ twin Yamaha 150hp HPDI's at 2.1 mpg at cruise. You'll be running a single so you'll have less drag and get a little better than that I'd wager.

If you'd gone diesel, I've estimated that I get 4.4 mpg @ 2000 rpm @ 26 mph and 3 mpg @ 2700 rpm @ 36 mph.
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Old 08 February 2013, 23:52   #9
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Everybody says certain engines are easier on fuel than other. To what degree is the fuel economy better between engines? If I buy one engine over another will one get twice the fuel economy? 10% better ?

Yes talking single gas outboards. People rave about fuel economy of certain engines but from what I can see the spread is only about 10% between the various brands.

Jason
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Old 09 February 2013, 00:02   #10
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Very very difficult to quantify. So many variables, hull, prop, gearbox, driving style, windage. If I was to make a semi educated guess, I'd say there's not much in it if you are comparing modern DI engines of any flavour.
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