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what is the fuel consumption for 496 ho

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Old 10-19-2008, 05:04 PM
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Default what is the fuel consumption for 496 ho

hi guys
can somebody tell me the mpg over the rpm for a single 496 ho
thanks
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Old 10-19-2008, 08:10 PM
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not good...
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Old 10-19-2008, 09:30 PM
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not sure but better then a 525
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Old 10-19-2008, 09:43 PM
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Wink

It's going to be totally dependant on the boat, prop selection and drive ratios, etc. I could not begin to guess here without a lot of input.

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Old 10-19-2008, 10:28 PM
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Most performance boats with twins will be between 1 mpg to 1.5 mpg. If fuel consumption is of any consideration.......buying a boat is not for you.
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Old 10-19-2008, 10:57 PM
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MPG will vary depending on the boat and efficiency of the hull.

Merc has charts that will show the GPH(gallons per hour) at various rpms though. At WOT, a 496 HO is probably about 35gph.
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Old 10-20-2008, 08:23 AM
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Quote:
Originally Posted by Griff View Post
MPG will vary depending on the boat and efficiency of the hull.

Merc has charts that will show the GPH(gallons per hour) at various rpms though. At WOT, a 496 HO is probably about 35gph.
Exactly! I run my diacom software and record live data. I've determined that 3500 RPMs is my best bang for the buck. I'm burning around 14 GPH and running 55 MPH. That's nearly 4 MPG, not bad for a boat. Over many hours I average around 11 GPH. That's some idle, cruise, and WOT.
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Old 10-20-2008, 09:27 AM
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A friend of ours has a 41 Velocity we ran 178 nautical miles at a RPM 3200-3600 his average was about 1.6 mpg.
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Old 10-20-2008, 12:24 PM
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AT WOT 5,100 I get 1mpg @ 70 mph so at WOT my 496HO burns 51.4 gph. MY best bang for the buck is ~ 3,500 also, I get about 3mpg.

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Old 10-20-2008, 12:35 PM
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Quote:
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AT WOT 5,100 I get 1mpg @ 70 mph so at WOT my 496HO burns 51.4 gph. MY best bang for the buck is ~ 3,500 also, I get about 3mpg.
Sounds high. My 525 burns 42 GPH at WOT according to Smartcraft.
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