330 SeaRay Sundancer With Inboards

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blackdog

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Jul 15, 2002
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A buddy of mine has a 1999 330 Sundancer with twin 454 inboards, and is questioned the fuel consumption. He has figured out running at 3200 RPM's rb2@gr5t 27 knots he is burning 33 gallons an hour. Is this right.
 
depending on the engine hours....maintainance records......and if their injected or carbed motors......I'd say its about right.

I had a 1995 330DA with 7.4 carbed motors with 565 hours.....and burned about 12/14 gph per at 3400rpm's.
 
I have a '95 330 DA with carb 7.4's. I burn about 25 GPH at 22K cruise partially loaded. The best I get is about .90 naut. miles per gal.
 
I have the the 1997 model with 7.4L Merc's, under good conditions ~3400 rpm nets about 26 kts consuming ~31 gph, at four folks plus half fuel and water, clean bottom.
 
I cruise at 3100 RPM's at a little ofver 26 knots in a 97' with 7.4 carbed inboards.
 
if he hasn't done that yet, tell him to check the condition of his running gear... it will only take a few barnacles on the props to cost him 10 to 15% fuel !
 
95 330 here, with rebuild carbs on 100 hour long blocks.

We cruise around 25-27 knots, usually 3400 RPMs, and with dockingslipping and putting around during a 3-4 hour cruise we burn 25 GPH. We filled her up this past weekend and ran the engines for 6 hours, most of which was at cruising speed. We are down to 3/8 of a tank on each tank, 108 gallon tanks.
 
I give up; what does rb2rb2------ mean?
 
If anyone is quoting GPH at cruise using a B&G or some other fuel flow monitor, then that is good. If we are doing math then the numbers are useless and by no means are good to compare to other boats.

Walter
 
I'm not a big fan of GPH figures anyway - just not enough info for me. I'm more interested in mpg, or I guess, .mpg. ;)
 
I look at it more as what are our boating habits and how much fuel do we burn with those habits. Not "what's my gph or mph" as that varies depending on the cruise. Point A to Point B usually involves a no wake zone or two, some hull speed, some cruising speed, docking, etc. One day we may go hull speed down the river while the next we may cruise at 3400 RPMs.

Sea Ray states full tanks should yield 10 hours of cruising.
 
The symbol "at" is embedded in that string. What does the forum do, replace the "at" with that entire string? I noticed the same string in a message title. Same reason?
 
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