Are jet boats that bad on gas?
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Are jet boats that bad on gas?

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    Question Are jet boats that bad on gas?

    I went to a marine supply place that sold newer boats, the guy told me my 73' sleekcraft is way too outdated and will get horrible gas consumption on the lake, I have not taken it out since I got it and it has twin 30 gallon tanks, do you think this is enough capacity for a day out on the lake? im not gonna race around, just cruise. It's a 23' executive by the way, is the guy right? are jet boats that primative? you guys know more about this so let me know if I bought something that sucks more fuel than my escalade with a 6.2L

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    Impeachment! 75 TX's Avatar
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    Jets don't get great mileage, and the more power your engine makes the worse the fuel economy will be (obviously). But if this clown at the dealer says you can't enjoy a full day on the lake with your boat's fuel capacity he's a moron. With 60 gallons and a fairly stock engine you'll be on the water for a few days minimum.

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    So you think I can get two days out of it just cruising? im doing a petronix dist. over the winter to modernize it a little bit. I dont mind putting fuel in it,just dont want my day cut short to go refuel, it's not like there is a pump on the water LOL...is there? jk

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    Quote Originally Posted by Quick01GT View Post
    So you think I can get two days out of it just cruising? im doing a petronix dist. over the winter to modernize it a little bit. I dont mind putting fuel in it,just dont want my day cut short to go refuel, it's not like there is a pump on the water LOL...is there? jk
    Again, it'll depend heavily on your engine and how radical it is. If it's just a reasonably stock BBC, BBF or Olds I wouldn't be surprised if you got 3-4 days of cruising (and occasional wide open passes) out of 60 gallons. Hell, maybe more. 60 gallons is a shit load of gas.

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    Senior Member Mash on It's Avatar
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    My heavy azz Eliminator 21' daycruiser BBC/Berk, gets better than 2 mpg, over 100+ miles on a fill up (50 gals) and the lil bow rider sbc/Dom hits 4.5-5 (needles bridge and back, 70+ miles), has 2 ten gallon tanks. All this at cruise 3 to 3500 r's. Skiing/tubing uses more.

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    Quote Originally Posted by Quick01GT View Post
    I went to a marine supply place that sold newer boats...
    Nuff said. Just enjoy your new toy!

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    Thanks guys, I knew it could not be that bad, just didnt want to make it a $1,000 a weekend in fuel cost hobby 2-3 days makes me a happy guy.

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    Distinguished Member David 519's Avatar
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    Back in the day, we had a 19' mini-day cruiser (my first boat) with a Panther pump and stock Hardin Marine 454. We'd go through 20-30 gallons a day pretty regularly water skiing and playing but those were pretty full days (was younger then ). The boat wasn't fast, but a really fun lake deal.
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    ....... David 519 is 100% correct........

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    I run a blown gas 565/14-71 combo in my 19 foot daytona jet, it holds 30 gallons and when its full I cruse 10 miles down the river where we hangout and can run the shit out of it most of the day racing and taking people for joy rides and cruise the 10 miles back to the ramp all on the 30 gallons. Getting the right impeller and a tight pump will help out a lot.

    Just to see how it was on fuel we launched at the begining of the river and went to the end wich is 21 miles, we made 4 or 5 hard 1/4 miles pulls while we were down there then headed back to the ramp for a total of 42 miles and the few hard passes and it used 23 gallons of fuel. Not to bad considering what it is, your boat will run a long time on 60 gallons with a tight pump!!
    Last edited by blownboosted; 11-06-2011 at 05:19 PM.

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    Senior Member EVILFORCE's Avatar
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    Quote Originally Posted by Quick01GT View Post
    I went to a marine supply place that sold newer boats, the guy told me my 73' sleekcraft is way too outdated and will get horrible gas consumption on the lake, I have not taken it out since I got it and it has twin 30 gallon tanks, do you think this is enough capacity for a day out on the lake? im not gonna race around, just cruise. It's a 23' executive by the way, is the guy right? are jet boats that primative? you guys know more about this so let me know if I bought something that sucks more fuel than my escalade with a 6.2L
    Yes you bought something that will make your Escalade look like a economy car. If the motor is stock or close to it you can run a 650 carb and really slow down the fuel leak. A bigger carb will give you a lot less mpg but it will make it run better. If it is a cruiser I would run the small carb. You also run a Panther pump. It will not run with a stock Berkley as far as speed either.
    No Fool Like A Old Fool is there?

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    Quote Originally Posted by 75 TX View Post
    Jets don't get great mileage, and the more power your engine makes the worse the fuel economy will be (obviously). But if this clown at the dealer says you can't enjoy a full day on the lake with your boat's fuel capacity he's a moron. With 60 gallons and a fairly stock engine you'll be on the water for a few days minimum.
    Would you like to place a bet on that?


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    All he want's to do is make a sell on a new boat that's all !

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    Quote Originally Posted by Quick01GT View Post
    So you think I can get two days out of it just cruising? im doing a petronix dist. over the winter to modernize it a little bit. I dont mind putting fuel in it,just dont want my day cut short to go refuel, it's not like there is a pump on the water LOL...is there? jk
    Proper tuning and carb jetting will make a huge difference in it's fuel usage as will the properly sized impeller.

    You will do fine with your 60 gallons but that 23' is a big boat.

    S CP

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    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

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    Quote Originally Posted by Sleeper CP View Post
    Would you like to place a bet on that?


    S CP
    What I was simply trying to say is that a stock 454 (or 460 for you ferd boys), with, let's say a 750cfm carb will burn less fuel than a 10.5 to 1 500something cube tunnel rammed dual carb motor. And sure, I'll place a bet on that.

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