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Topic: 310 Cruise speed?

Author Message Prev Topic | Next Topic  NW_Vermont "Seaman" Joined: September 14 2005 Posts: 33 Posted: August 12 2009 at 09:31 | IP Logged I have a 2004 Intrigue with VP 320hp GXi's and am looking for the most efficient cruise speed/RPM. My research thus far and observations of ride attitude/RPM/Speed shows that 29-31 mph is ideal.  The boat doesn't require tabs to achieve proper plane and the boat is more "on-top" than lesser, on-plane speeds. A while ago Doral used to publish RPM/SPEED/GPH graphs on their website but they don't do that any longer.  My efforts to see a boat test of the 310 with the GXi's have turned up nothing.  Can anybody help me locate the best cruise speed and/or a RPM/Speed/GPH graphs? Just to share info, I took a 200+ mile trip last week and averaged an estimated 1.25 mpg, but speeds were typically slower than 29-31 mph.  I was happy with this expected result. Thanks in advance. NW_Vermont __________________ 2004 Doral Monticello Back to Top    INWATER "Seaman Recruit" Joined: January 01 2000 Posts: 21 Posted: August 14 2009 at 20:00 | IP Logged My best cruise speed is at 3200RPM with the 5.7 280HP on my 310. __________________ Larry Back to Top    Doral 310 "Seaman Recruit" Joined: March 18 2004 Posts: 39 Posted: August 17 2009 at 11:07 | IP Logged If I'm not in a hurrry, I run my boat at 3200rpm also.  According to the GPS I get a speed of 25.6 knots.  At this speed I burn about 21 gals and hour.  There are times when I run at 4000 rpms and it doesn't  seem to burn much more.  I have the 5.7 280hp.  I just love my Volvos. Back to Top

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