galons per hour?
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 20

Thread:
galons per hour?

  1. #1

    Join Date
    Aug 2009
    Posts
    13

    Default galons per hour?

    just wondering what to expect out my gas tank. only have a 5 galon one for now. this is my first boat , 74 marlin jet boat with 455 olds. how long can i run on the 5 galons? will be upgrading to 2 eleven galons this winter..

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member YumaJet's Avatar
    Join Date
    Sep 2008
    Location
    Yuma, Az
    Posts
    829

    Default

    Quote Originally Posted by FTFjetter View Post
    just wondering what to expect out my gas tank. only have a 5 galon one for now. this is my first boat , 74 marlin jet boat with 455 olds. how long can i run on the 5 galons? will be upgrading to 2 eleven galons this winter..
    you'll be good for one, maybe two hours of driving time. my two 11 gallon tanks last one day of driving up and down the river, with my 454 bbc.
    boatless....

  4. #3
    Senior Member Delemorte's Avatar
    Join Date
    Mar 2008
    Location
    Charlotte, NC.
    Posts
    1,553

    Default

    my 2 10 gallon tanks take me 16 miles up river and 16 miles back with not a lot left over.. then again i do keep my foot in it most of the way.


    350 SBC 750 CFU double pumper.


    if i kept my foot out of it more or drove like i had some sense it would probably last longer.. So average 55 mph for 32 miles on 20 gallons. When i say it like that i hang my head.


    Edit: Before any one says it.. yes i have checked for leaks and found none..
    Quote Originally Posted by jetboatperformance View Post
    the ensueing fire would likely be extinguished by the sinking however

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member
    Join Date
    Feb 2008
    Posts
    546

    Default

    a lot of variables, weight, trim and especially rpm, i would figure in the 4-6 mpg range at mid throttle will be in the ball park.

  7. #5
    Senior Member
    Join Date
    Jan 2008
    Location
    plano texas
    Posts
    193

    Default

    Thats a tough question, depends how heavy your foot is.

  8. #6
    ... Some Kind Of Monster's Avatar
    Join Date
    Dec 2007
    Location
    East Side
    Posts
    2,056

    Default

    Heavy foot, big carb.. I get about 2.5 mpg..

  9. #7
    Senior Member TahitiRat's Avatar
    Join Date
    Dec 2007
    Location
    Fort Worth Texas
    Posts
    376

    Default

    I get about 2.6 mpg with a 454 but there was alot of skin and alot of WOT. I am about 250 lbs and drag hard on a single ski.

  10. #8
    Senior Member LuckyDaze's Avatar
    Join Date
    Apr 2008
    Location
    Tacoma Wa
    Posts
    1,409

    Default

    It all boils down to hull weight, efficiency, engine, and how into it you are. I have two 11 gallon tanks that will last me almost all weekend of cruisin if I'm not in it all the time.

    My boat stays on plane at around 2500rpm so the engine doesn't have to work too hard to keep her goin at speed.

  11. #9

    Join Date
    Aug 2009
    Posts
    13

    Default thanks!

    i know this was probally a stupid question, but was just curious. will definitly keep my eyes on my fuel,even though my mind seems to forget the important things!
    heading out to wampers in the mourning for my first voyage

  12. #10
    Senior Member LuckyDaze's Avatar
    Join Date
    Apr 2008
    Location
    Tacoma Wa
    Posts
    1,409

    Default

    Quote Originally Posted by FTFjetter View Post
    i know this was probally a stupid question, but was just curious. will definitly keep my eyes on my fuel,even though my mind seems to forget the important things!
    heading out to wampers in the mourning for my first voyage
    Be safe and have fun!

  13. #11
    Apache Lake Monger AZKC's Avatar
    Join Date
    Dec 2007
    Location
    Tucson
    Posts
    917

    Default

    We filled up and drove around cruising and hammering it. Went back filled it up checked the GPS. 3mpg. Needless to say we sit and chill alot more

  14. #12
    Senior Member Delemorte's Avatar
    Join Date
    Mar 2008
    Location
    Charlotte, NC.
    Posts
    1,553

    Default

    Quote Originally Posted by FTFjetter View Post
    i know this was probally a stupid question, but was just curious. will definitly keep my eyes on my fuel,even though my mind seems to forget the important things!
    heading out to wampers in the mourning for my first voyage

    Just stay close to shore incase you got to paddle.. Would not hurt to take a jerry can with you your first time. Since you only got 5 gallons the jerry can can allways get you home. Thats how i run on two tanks.. one tank there, one tank back.
    Quote Originally Posted by jetboatperformance View Post
    the ensueing fire would likely be extinguished by the sinking however

  15. #13
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,075

    Default

    Quote Originally Posted by Delemorte View Post
    Just stay close to shore incase you got to paddle.. Would not hurt to take a jerry can with you your first time. Since you only got 5 gallons the jerry can can allways get you home. Thats how i run on two tanks.. one tank there, one tank back.
    If he runs up river first coming home might be easier

    One year we blew up our roller cam 472 ( +.060 460) and then replaced that engine with a stock 460 short block and a Comp hyd flat tappet. We figured our big engine got nearly twice the fuel milage that the stocker did. It had to work much harder to run up river at 3,500-3,800. It blew up on the second day. BNAG

    And yes, a 5 gal Jerry jug sounds like a good idea.

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  16. #14
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
    Join Date
    Dec 2007
    Location
    Newton Ks.
    Posts
    6,834

    Default

    Quote Originally Posted by FTFjetter View Post
    just wondering what to expect out my gas tank. only have a 5 galon one for now. this is my first boat , 74 marlin jet boat with 455 olds. how long can i run on the 5 galons? will be upgrading to 2 eleven galons this winter..
    I run a 20-gal tank, and a mildly modified 454.

    I can get about 3 1/2 hours of skiiing or tubing out of it, if I am careful.

    Ran it dry once in a bit over 2 hours, power-cruising with my foot in it pretty good most of the time.
    "As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron."
    H.L. Mencken

    OBAMA: Some people deserve this.
    The rest of us are being dragged along kicking and screaming.

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95