Pension Plan
New Member
Looking for info on diesel fuel burn rates at various speeds for above configuration.
Cummins 454 in SeaRay 390MY
- Thread starter Pension Plan
- Start date
Alex F
Well-Known Member
- Nov 14, 2006
- 9,166
- Boat Info
- 2005 420DB with AB 11 DLX Tender, Raymarine Electronics (2x12" MFDs) with Vesper AIS
- Engines
- Cummins 450Cs, 9KW Onan Generator, 40HP Yamaha for tender.
I suggest to email Sea Ray and they'll provide the info for you.
Carver370
Well-Known Member
- Mar 30, 2007
- 1,928
- Boat Info
- 2000 Sea Ray 400 Sundancer - Diesel
- Engines
- T-3116 CAT - 350 HP
A cummins 454 eh?
jmunro123
Member
I have the burn rates for MerCruiser 480CE diesels
RPM Knots GPH MPG
500 ,4.6, .8, 7.07
750 ,5.9, 1.4, 4.86
1000, 7.1, 3.5, 2.34
1250, 8.0, 7.2, 1.28
1500, 8.4, 9.3, 1.04
1750, 13, 16.1, .93
2000, 17.1, 22.5, .87
2250, 21.2, 29.2, .84
2500, 24.5, 38.3, .74
2680, 26.2, 45.4, .66
RPM Knots GPH MPG
500 ,4.6, .8, 7.07
750 ,5.9, 1.4, 4.86
1000, 7.1, 3.5, 2.34
1250, 8.0, 7.2, 1.28
1500, 8.4, 9.3, 1.04
1750, 13, 16.1, .93
2000, 17.1, 22.5, .87
2250, 21.2, 29.2, .84
2500, 24.5, 38.3, .74
2680, 26.2, 45.4, .66
Last edited:
popeye
New Member
- Aug 25, 2009
- 262
- Boat Info
- 1988 sundancer 268 27 ft.
- Engines
- 454 mercruiser/ Alpha drive.
Oh yeah, I had one in AN OLD RUSSIAN TRACTOR ONCE...:smt001
The table I have was for the gas model. I think the Cummins diesel in 2004 available for the 390MY was the 480CE. I have not seen a fuel table for that combination but, if Sea Ray doesn't have one, you might want to use the Cummins table for that engine available at http://www.cmdmarine.com/engines/rec/inboards/DIAMOND/dia-480ce.html. If you've got an idea of speed vs. RPM for your boat, Cummins' table should be fairly close. It will also give you rated RPM at WOT and some other info that's useful to have.
I am guessing you will be looking at .75 Gal/NM at cruise which is slightly less than what I get with the QSB425, but that's only a guess.
Did a quick search and found it at http://www.boattest.com/boats/boat_video.aspx?ID=671#Test-Result.
Just about what I thought it would be, .75NMPG at 20 Kts.
Just about what I thought it would be, .75NMPG at 20 Kts.
Alex F
Well-Known Member
- Nov 14, 2006
- 9,166
- Boat Info
- 2005 420DB with AB 11 DLX Tender, Raymarine Electronics (2x12" MFDs) with Vesper AIS
- Engines
- Cummins 450Cs, 9KW Onan Generator, 40HP Yamaha for tender.
That appears to be pretty good number for this boat. I've heard that an older 42AC with CATs gets around .6MPG at cruising speed. I don't have all exact numbers, but I do remember this part of the info.
