Burn Rate GPH ?

[CJM]

Does anybody have the burn rate in GPH per RPM of 7.4 MPI Horizons 380hp ? I have seen the 7.4 MPI 310hp & almost all other mercruiser engines listed, but not the 7.4mpi Horizons...

 

[JimG]

Obviously there are several factors that affect burn rate, but this pretty cool:
http://www.boat-fuel-economy.com/mercury-mercruiser-twin-engine.html

 

[West32]

My 1999 370 EC burns 17.4 GPH each motor at 3500 rpm at 24 MPH

 

[Captain Gary]

Great website JimG! Can't wait to check again my engine and see how close (of course wind, waves, current effects considered). Sounds about right though.

 

[Steve S]

My 2000 340 Sundancer with the 7.4 Horizons 380 HP burned 36 GPH at 3500 RPM.

 

[CJM]

Jim G. I was aware of that website, but they didn’t list the 7.4 Horizon (380hp).. Thanks for all of the other replies.