Click for Cross Click for Glendinning Click for JetForums Click for Abeking Click for Abeking

fuel consumption 12v92 any one Know

Discussion in 'Engines' started by ken milne, Oct 5, 2016.

You need to be registered and signed in to view this content.
  1. ken milne, Oct 5, 2016
    #1
    ken milne

    ken milne New Member

    Joined:
    Oct 5, 2016
    Messages:
    1
    I am looking at buying a boat with twin 12v92 trying to get a idea of comsumtion at different rpm to throw a twist this boat has hamiton jet drives
  2. Capt J, Oct 5, 2016
    #2
    Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,524
    Location:
    Fort Lauderdale
    Jet drives are very in-efficient at slow speeds. At 1000 rpm's you'll be burning 15 gph (both) but probably only doing 7 knots, at 1950 rpms around 120 gph.
  3. DOCKMASTER, Oct 6, 2016
    #3
    DOCKMASTER

    DOCKMASTER Senior Member

    Joined:
    Feb 26, 2012
    Messages:
    1,497
    Location:
    Ketchikan, Alaska
    I have 12v92's TTA at 1,050 hp each. Not sure which model/hp 12v92's you are looking at. I have traditional props so can't speak to the jet drives but here's what I have on fuel burn (total for both engines)
    1850 RPM's - 80 gals/hr (this is where I normally cruise and is about 72% engine load)
    1950 RPM's - close to 90 gals/hr
    2350 RPM's (WOT) - 125 gals/hr
    Slow cruise at 1,000 - 1,100 RPM's is about 15 gals/hr as Capt J said. But not sure where he gets 120 at 1,950?

    Hope this helps
  4. Capt J, Oct 6, 2016
    #4
    Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,524
    Location:
    Fort Lauderdale
    I ran a set of J+T 12v92 TA's pre- ddec and that's what they burned. The 12v71 TIs I have run usually burn 80 or 90 gph at 1900.