Fuel Consumption

dudeinak · Post by **dudeinak** » October 30th, 2018, 5:14 am

Howdy. Am looking at purchasing a 25' Santa Cruz w/ 5.7L 260 hp Volvo Penta and am wondering what fuel consumption might be at cruise.

Post by **Midnightsun** » October 30th, 2018, 5:33 am

Optimal cruise rpm (on plane) on a 5.7 is around the 3500 rpm mark. With that in mind take a look here to get a good idea of what you will consume. http://www.boat-fuel-economy.com/volvo- ... us-gallons

dudeinak · Post by **dudeinak** » October 30th, 2018, 5:43 am

Thanks. Boat has been updated with a duoprop outdrive. I wonder how that will affect consumption.

dcrahn · Post by **dcrahn** » October 30th, 2018, 8:13 am

dudeinak wrote:Thanks. Boat has been updated with a duoprop outdrive. I wonder how that will affect consumption.

I had the same engine in my 26ft Monterey and I say had because it had a rod sticking out the oil pan when I bought it, got it real cheap. But, from everything I have read about Duoprop's it will improve fuel consumption. I want to do the same thing when the new engine I built is installed.

RGrew176 · Post by **RGrew176** » October 30th, 2018, 10:59 pm

You should notice some improvement with the Duoprop conversion.

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