Welcome Guest - Sign Up today
Welcome Guest - Sign Up today

Announcement

Collapse
No announcement yet.

Fuel Flow meter results W/ GPS speed

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Fuel Flow meter results W/ GPS speed

    Hey Guys. Here is what my Fuel Flow Meter (Flo-Scan) gave me this morning at 500RPM intervals with speed. I'm not sure the RPM portion of the guage is set correctly as WOT sounds a lot faster.


    RPM ----------- GPH ---------- MPH
    580 ------------ 1.0 ----------- 4.0
    1010 ----------- 1.8 ----------- 6.0
    1510 ----------- 3.4 ----------- 9.0
    2020 ----------- 4.2 ----------- 18
    2500 ----------- 5.4 ----------- 24
    3000 ----------- 7.0 ----------- 31
    3500 ----------- 9.7 ----------- 35
    3620 ---------- 11.4 ----------- ??


    This is from a 1984 Mariner 90hp inline 6. I don't know how fast I was going at WOT as the GPS speedo only goes up to 35.

    Let me know your thoughts on this.

    Thanks. Craig
    Attached Files
    There are Mercury/Mariner outboards and then there are Force/Chrysler outboards. There is no such thing as a Mercury Force, yes Mercury Marine built them, but it's still the old Chysler engine with updated electronics and a better lower unit, NOTHING MORE..


    How much horsepower can I have and still go to Heaven??

    1981 Glastron SSV194, MerCruiser 228hp (305 cid), 350 hours. Cuises at 3000 RPM / 30/31 MPH

  • #2
    Re: Fuel Flow meter results W/ GPS speed

    I contacted Flow-Scan and there is an adjustment to the tach. It now reads 4900-5000 at WOT. Next time out I will do the same test with the correct RPM intervals.

    Craig
    There are Mercury/Mariner outboards and then there are Force/Chrysler outboards. There is no such thing as a Mercury Force, yes Mercury Marine built them, but it's still the old Chysler engine with updated electronics and a better lower unit, NOTHING MORE..


    How much horsepower can I have and still go to Heaven??

    1981 Glastron SSV194, MerCruiser 228hp (305 cid), 350 hours. Cuises at 3000 RPM / 30/31 MPH

    Comment


    • #3
      Re: Fuel Flow meter results W/ GPS speed

      Ok, here are the corrected results

      RPM ---------- GPH ---------- MPH
      0620 --------- 1.3 ----------- 3.0
      1000 --------- 1.6 ----------- 4.5
      1500 --------- 2.3 ----------- 6.0
      2000 --------- 3.6 ----------- 8.0
      2500 --------- 4.3 ----------- 12
      3010 --------- 5.1 ----------- 21
      3510 --------- 6.1 ----------- 26
      4000 --------- 7.2 ----------- 30.5
      4510 --------- 8.8 ----------- 35
      4820 -------- 11.5 ---------- 39

      3500 seems to be the most efficeint speed. And this run was with 2 other people in the boat
      There are Mercury/Mariner outboards and then there are Force/Chrysler outboards. There is no such thing as a Mercury Force, yes Mercury Marine built them, but it's still the old Chysler engine with updated electronics and a better lower unit, NOTHING MORE..


      How much horsepower can I have and still go to Heaven??

      1981 Glastron SSV194, MerCruiser 228hp (305 cid), 350 hours. Cuises at 3000 RPM / 30/31 MPH

      Comment


      • #4
        Re: Fuel Flow meter results W/ GPS speed

        What hull are you pushing with the Mariner? Seems like the sweet spot is just up on plane, 4.26mpg.
        For comparison sake I get 5.35 mpg at 3500 RPM with the F150 on my Islander 19.
        "Doris", 2007 Stanley Islander 19, Yamaha F150

        Comment


        • #5
          Sign up today
          Re: Fuel Flow meter results W/ GPS speed

          I'm pushing a 17' Fiberform (1979) Wikiki.

          Craig
          Attached Files
          There are Mercury/Mariner outboards and then there are Force/Chrysler outboards. There is no such thing as a Mercury Force, yes Mercury Marine built them, but it's still the old Chysler engine with updated electronics and a better lower unit, NOTHING MORE..


          How much horsepower can I have and still go to Heaven??

          1981 Glastron SSV194, MerCruiser 228hp (305 cid), 350 hours. Cuises at 3000 RPM / 30/31 MPH

          Comment

          Working...
          X