Welcome to Carver Yachts Owners Forum

We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com

You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Gallons per hour

ImageThis forum is for general discussion of all things Boating. If it's boating related and doesn't fit in another forum, post it here!
User avatar

Topic author United States of America
tonyiiiafl
CYO Supporter
CYO Supporter
Posts: 880
Joined: November 19th, 2015, 4:00 am
Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
Location: Cape Cod, MA
Has thanked: 584 times
Been thanked: 173 times

Gallons per hour

Postby tonyiiiafl » July 20th, 2017, 4:40 am

I was wondering what the average GPH is around here. I use a TWIN SCAN and find that my 290 CPMY with thirsty 454 Carbed use (combined) 22 GPH at 2900 RPM, which gives me 14 KTS. At to 3600 RPM I am kicking a$$ at 26 KTS but am also at 52 GPH. Anyone else?

User avatar

Canada
Midnightsun
CYO Supporter
CYO Supporter
Posts: 2831
Joined: March 27th, 2016, 2:27 pm
Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's
Location: Montreal, Canada
Has thanked: 253 times
Been thanked: 1093 times

Re: Gallons per hour

Postby Midnightsun » July 20th, 2017, 6:11 am

My Volvo diesels are pretty good in comparison. Burn around 2.2 gph @ 1200 rpm @ 7-8mph and 26 GPH @ 3200 rpm @ 26-27 mph. Figures are for both engines from the Volvo EVC system.
Cheers, Hans
2007 Carver 41 CMY
Twin Volvo D6-370's
Montreal, Canada
Midnight Sun I Photos
User avatar

United States of America
waybomb
CYO Moderator
CYO Moderator
Posts: 2404
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1995 Boston Whaler Rage15
1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glasspar / 1967 Johnson Electromatic 85
1996 Boston Whaler Rage 15
Location: Saint Joseph,Mi
Has thanked: 50 times
Been thanked: 396 times

Re: Gallons per hour

Postby waybomb » July 20th, 2017, 12:43 pm

About 120 gallons an hour at 60mph cruise.
About 220 gallons an hour at 104.
Not the Carver.

The Carver, I don't even care. It's almost a joy pulling up to the gas dock. I can go weeks without even thinking about gas!
I honestly have not considered fuel burn in it.
But it's probably about 2 gallons a mile on plane at cruise.
Thanks
Fred
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft

United States of America
PJHoffnet
Deck Hand
Deck Hand
Posts: 93
Joined: August 27th, 2016, 12:28 pm
Has thanked: 55 times
Been thanked: 18 times

Re: Gallons per hour

Postby PJHoffnet » July 22nd, 2017, 2:29 pm

Has anyone installed flow rate gauges? While doing an average per hour or mile is nice, I never spend an entire underway at anywhere near a constant speed.

I of course know how much fuel I burned between fill ups (well, to the accuracy of filling the tanks to the same level each time) but for voyage planning it's not a big help.

Being able to do a few 15-30 minute runs at a constant speed would really help set a 'standard' to use when doing long distance voyage planning when you know you'll be operating at several different speeds (no wake, 5 knots, cruise, etc)

Granted, weather conditions and other factors will play in soon - but the 'average' of the instantaneous reading on the fuel flow meters are certainly be better than a 'between fill up' average.
User avatar

Topic author United States of America
tonyiiiafl
CYO Supporter
CYO Supporter
Posts: 880
Joined: November 19th, 2015, 4:00 am
Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
Location: Cape Cod, MA
Has thanked: 584 times
Been thanked: 173 times

Re: Gallons per hour

Postby tonyiiiafl » July 23rd, 2017, 6:25 pm

I have a dual FloScan installed, that is how I know what I am burning.
User avatar

Canada
bud37
Admiral
Admiral
Posts: 4676
Joined: April 23rd, 2015, 10:22 pm
Has thanked: 547 times
Been thanked: 1142 times

Re: Gallons per hour

Postby bud37 » July 23rd, 2017, 8:07 pm

waybomb wrote:Source of the post About 120 gallons an hour at 60mph cruise.
About 220 gallons an hour at 104.
Not the Carver.

The Carver, I don't even care. It's almost a joy pulling up to the gas dock. I can go weeks without even thinking about gas!
I honestly have not considered fuel burn in it.
But it's probably about 2 gallons a mile on plane at cruise.

Is that 105 low lead or regular for the hot rod????......... :beergood:
The above is strictly my opinion always based on years of doing...remember to support local business , it pays back.
User avatar

United States of America
waybomb
CYO Moderator
CYO Moderator
Posts: 2404
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1995 Boston Whaler Rage15
1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glasspar / 1967 Johnson Electromatic 85
1996 Boston Whaler Rage 15
Location: Saint Joseph,Mi
Has thanked: 50 times
Been thanked: 396 times

Re: Gallons per hour

Postby waybomb » July 23rd, 2017, 9:23 pm

Tuned for rec90.
Have it pulley'd for 5 -6 psi.
Thanks
Fred
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
User avatar

Canada
bud37
Admiral
Admiral
Posts: 4676
Joined: April 23rd, 2015, 10:22 pm
Has thanked: 547 times
Been thanked: 1142 times

Re: Gallons per hour

Postby bud37 » July 24th, 2017, 2:00 pm

waybomb wrote:Source of the post Tuned for rec90.
Have it pulley'd for 5 -6 psi.

Ok.....I was doing the math for race gas at 120 GPH.... :-O .... :-D
The above is strictly my opinion always based on years of doing...remember to support local business , it pays back.
User avatar

United States of America
gmwalley
Scurvy Dog
Scurvy Dog
Posts: 25
Joined: May 5th, 2016, 12:07 pm
Vessel Info: 1994 Carver 370 Aft Cabin
Location: North Alabama
Been thanked: 11 times

Re: Gallons per hour

Postby gmwalley » July 25th, 2017, 10:58 am

I have a Garmin chart plotter and when I bought the boat I added the garmin fuel flow sensors at the same time (also upgraded the 'flakey' level sending units with WEMA style). Plotter now keeps track of fuel level, burn rate, calculates range to empty, etc. - almost like a video game. Overall average on 370 aft cabin with twin 454XL crusaders is about 1 mpg. On plane its about .7 mpg. ... so burn rate is MUCH higher at planing speeds but so is speed. Seems most efficient is just at the edge of coming off plane. Sensors were easy to install (except pulling the NMEA cable up from engine room. Newer boats my already have it there for other stuff - my boat is a '94 model with carb engines.
User avatar

United States of America
bigblockcutlass123
Scurvy Dog
Scurvy Dog
Posts: 30
Joined: December 10th, 2016, 5:48 am
Vessel Info: 1998 Carver 370 Voyager
Location: Michigan
Been thanked: 2 times

Re: Gallons per hour

Postby bigblockcutlass123 » December 21st, 2017, 2:11 pm

tonyiiiafl wrote:Source of the post I have a dual FloScan installed, that is how I know what I am burning.

Mine is linked to my GPS and tells me Miles per Gallon, Also gallons burned.

Return to “General Boating Discussion”



Who is online

Users browsing this forum: No registered users and 24 guests