1999 era 330 da with horizons, vdrives - ?fuel consumption?

[creik]

hello everyone.we are selling our 1999 330 da, and we have a serious interest looking. he asked me about fuel consumption, and i quoted him about 1mpg, at 3200 rpm, cruising at about 24 knots by gps data.
can anyone with experience with a similar vessel share with me their data? i would like to provide objective, impartial data for the potential buyer.
i really appreciate any rteplys.
thanks, chris

 

[Odayssea]

I believe it should be a little less - about .87 SMPG at cruising speed

 

[mrsrobinson]

Reported GPH on our 1995 330 with carburated 7.4s is 30 GPH. We average around 23-25 running at 3300 - 3400 RPMs.

 

[dpmulvey]

Which horizons?

[EDIT ADD]

I have 6.2's mated to 1.5:1 Velvet Drives and average 22 GPH at 22 knots. That equates to 1 NMPG or 1.15 SMPG. Cruising RPM for the 6.2 is between 3700 and 4200 RPM.

HTH

 

[creik]

thanks for the replys. should have been more specific. we have 7.4l horizons.
for what it is worht, i found a 1999 sea ray data book through a local broker, and it states:

12.4 gal/hr each
thus 24.8 gph for both, at 3000 rpm stated
we cruise at 3200, by gps get ~24 knots, that is 27.6 mph
if i add ~10% to get from 3000 to 3200, makes 27.3 gph
27.6/27.3=~1.01 mpg

this is my logic. does anyone fundamentally disagree or see a flaw in this calculation?
remember, i am looking for a ballpark figure, and i feel like this is failry sound logic.
thanks, chris

 

[rondds]

that's probably close enough. i'd say btwn 0.9 & 1.1mpg. i get, if i'm lucky, around 0.7mpg at 18mph, but i've got about 5500lbs more weight, a whole lot more wind resistance and carburetors. :smt089