I just got back from a trip with our Carver Mariner 350. The Mariner has 454’s, full tank of water (100 gallons) and full gas tanks (250 gallons) The trip was about 36 miles long. I cruised in fairly flat water at 3,200 - 3,400 rpm at 20 mph. I burned about 1/3 of my 250 gallons.
According to my calculations I burned about 85 gallons of gas. Making about 2.36 gallons a mile.
Does this seam about right for my setup? Should I be running faster or slower?
Carver Mariner 350 (454’s) fuel burn
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waybomb
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Re: Carver Mariner 350 (454’s) fuel burn
That is not right. Did you put 85 in our are you assuming the gage is correct?
Were you on plane without tabs, or making it plane with tabs?
Were you on plane without tabs, or making it plane with tabs?
Thanks
Fred
1969 Glaspar Avalon /1967 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
Fred
1969 Glaspar Avalon /1967 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
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mjk1040
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Re: Carver Mariner 350 (454’s) fuel burn
I think he forgot to divide by 2! Per Tank!!
Mike 
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
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I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
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amanphoto
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Re: Carver Mariner 350 (454’s) fuel burn
Let me check this again.
I was combining for total fuel. I have two tanks totaling 250 gallons.
I was on plane using very little tab. (more tab, less speed because your diving the nose down).
I was combining for total fuel. I have two tanks totaling 250 gallons.
I was on plane using very little tab. (more tab, less speed because your diving the nose down).
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km1125
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Re: Carver Mariner 350 (454’s) fuel burn
That part's not necessarily true. Yes, you are pushing the nose down, but you're also causing more air pockets to be trapped against the hull which help reduce the "friction" of the water. More importantly though, you're also allowing the props to be closer aligned to forward movement, rather than be pitched up, which makes them more efficient pushing the boat. This is where you get most of the improvement in GPH.
TOO MUCH TAB results in what you describe, but "no" or "very little" might not be the best.
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