Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Hybrid View

  1. #1
    Join Date
    Jun 2020
    Location
    Utah
    Posts
    198

    Default Raptor Fuel Consumption Curve

    Does anyone have the fuel consumption curve for the 2016 Indmar Raptor engines? We are headed to Lake Powell next week and I am debating about a longish excursion and want to see if I have the fuel to do it before hand. I haven't really tracked my fuel consumption on a per hour or per mile basis in the boat other than to say that if I go surfing for half a day I need 15-20 gallons. This summer I was able to get at least 50 miles up and back with a bunch of surfing in between and was into the 30-40 gallon range each day, but this excursion will be about 60-70 miles total, so I think I am safe but given the remote area we will be going to and the time of year, I would rather not be stuck floating for a while.

    Thanks!


    2016 Moomba Mojo Surf Edition
    2000 Sharpe Houseboat 70x16 (Lives at Lake Powell)

  2. #2
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    1,560

    Default

    Strap a few 5 gallon cans to your platform!

    Sent from my SM-G781V using Tapatalk
    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds bow speakers & 10's on the Tower & ported sub

  3. #3
    Join Date
    Jan 2021
    Location
    Columbus, Ohio
    Posts
    1,070

    Default

    Running around Norris lake without any surfing or pulls 70 mile round trip would be no issue. Water was very calm to glass and I stayed at 4000rpm or less. With the 1.5 Trans and the 15x13 prop 4000 is 20mph so 70 miles is over 3 hrs of runtime.

    If you surf while making the cruise I would strap a fuel can to the platform as CYA!
    2015 Moomba Mojo Surf Edition
    4,000lbs
    Manual Flow

  4. #4
    Join Date
    Jun 2020
    Location
    Utah
    Posts
    198

    Default

    For sure we will bring along extra gas. The day of the long run we won't be surfing so I will probably put a couple cans in the rear lockers just to be safe. I was just hoping for the RPM with the best fuel consumption in that 3,000 RPM range. I am pretty sure there won't be any issues, but I have done that lake enough times to know that a stiff headwind and heavy waves will chew up your gas really quickly.


    2016 Moomba Mojo Surf Edition
    2000 Sharpe Houseboat 70x16 (Lives at Lake Powell)

  5. #5
    Join Date
    Apr 2020
    Location
    Prince George Canada
    Posts
    288

    Default

    I don’t know where I saw but I did see a spreadsheet that had the 6.2 Raptor peak efficiency at 3500 rpm.
    2020 Moomba Mojo
    2008 Mastercraft Prostar 197 40th Anniversary
    Owner Ness Lake Watersports
    Wakemakers “Exact Fit” Bags + Lead = 4,700 ballast
    Audio by Wetsounds, MTX, JL Audio, Clarion
    15 X 13.00 ACME prop

  6. #6
    Join Date
    Jun 2008
    Location
    Henderson, NV
    Posts
    6,891

    Default

    not an engineer and never played one on tv but I would suspect there are wild swings in efficiency numbers between different combos of running gear, prop selection and boat hull design along with the overall payload. that doesn't even begin to mention zog's comment on wind/waves.

    the engine may find it's sweet spot at 3500rpm's on a bench but real world might be 3100 in zog's boat, 3700 in larry's supra SA and 3400 in our old tige r23 due to hulls/trans ratio/prop/hull.
    one day might be 2500 to go 100 miles and next day you might be able to get away with 3400 and go the same 100 miles on the same gas usage.

    either way I'm jealous that you are on powell
    '06 Supra Launch 20SSV-gone but never forgotten

  7. #7
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    1,560

    Default

    You will never truly know how far you can go until you go! but sounds like you will be fine. And it sounds like a fun trip!

    Sent from my SM-G781V using Tapatalk
    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds bow speakers & 10's on the Tower & ported sub

  8. #8
    Join Date
    Sep 2017
    Location
    Ft Gibson Lake OK
    Posts
    342

    Default

    Never really thought about the distance. Pulled up the map and sketched out a path. Looks like the longest round trip we have done is about 44 miles, with some mild surfing and boarding in-between. If I recall, it took ~36 gallons to fill it back up the next weekend. So still, plenty of gas left. Cursing doesn't burn near as much as when the ballast is full and surfing.
    2021 Makai

  9. #9
    Join Date
    Jan 2021
    Location
    Columbus, Ohio
    Posts
    1,070

    Default

    Your Makai is fine 70 gallon tank.
    His 2016 Mojo is only 40 gallons. So I understand the concern, but no ballast strictly cruising at 22-ish mph should be good.
    2015 Moomba Mojo Surf Edition
    4,000lbs
    Manual Flow

  10. #10
    Join Date
    Jun 2020
    Location
    Utah
    Posts
    198

    Default

    Quote Originally Posted by Holdmybeer View Post
    Your Makai is fine 70 gallon tank.
    His 2016 Mojo is only 40 gallons. So I understand the concern, but no ballast strictly cruising at 22-ish mph should be good.
    Mojo is 50 gallons. I have been thinking it wouldn't be a problem but then I started to read a trip report from someone else and they stretched it a bit too far and it got me worried. He was getting 1.5 mpg instead of 2 mpg due to a problem with the boat he was running. I haven't ever tried to track it. My BIL just about ran his Supra SL out doing a similar excursion but was able to buy gas off of a houseboat. I really wouldn't be too worried except the mid-lake marina (Dangling Rope) was damaged last summer and NPS hasn't been able to find a replacement, leaving about 80 miles of lake (not counting the 10 miles up the other river arm we will be going to) between the two closest marinas with gas. I recalculated my trip and it will really run about 80 miles total, but I think I will be fine. I will be tossing in 10-20 gallons in cans for some peace of mind though. Hopefully in a couple weeks I will be able to send a nice shot of us passing beneath Gregory Natural Bridge.


    2016 Moomba Mojo Surf Edition
    2000 Sharpe Houseboat 70x16 (Lives at Lake Powell)

Posting Permissions

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