22Ft double eagle boat fuel economy?

[J.C.W. 500]

Hey i'm new to the forum and bought a used 1981 double eagle 22ft flybridge last spring. I have been wondering what the average fuel economy for a 22ft double eagle is and what the most fuel efficient cruising RPM is. Thanks in advance.

The boat has a 5.7litre 260hp volvo penta v8 inboard with a volvo 280 outdrive leg.

 

[chris73]

Are you sure you reeaaalllly want to know? Huuuaaaaoo

 

[J.C.W. 500]

The fuel economy is that bad?...lol.

Yeah, I have noticed that there is an aftermarket gas tank in the boat that holds about 250 litres. The boat will eat a 1/4 tank of fuel in about 30km at 3600RPM RPM acorrding to the gas gage. I can't really tell how much fuel is really being burnt though because the gas tank is oddly shaped. My main reason for asking is because I want fish at some offshore locations such as Swiftsure Bank and am wondering if I could safely make it there and back to Port Renfrew without running out of fuel.

 

[Charlie415]

Fuel flow meter is the best way to know that. Mine is accurate to a liter with 300 liters of usage. Next best is to log your hours and usage to get a better idea of what you are burning. It should be around 50 liters an hour or so (best guess) depending on load ect.

 

[Theb55]

I have an IO Double Eagle V6 and I burn about 1/8 of a 40 gal gas tank during half a day off logan and 1/2 day at Swiftsure. Last summer I trailered it out, went to Swiftsure 2 times and fished off the creeks hard for 4 days and used about 20 gallons First time we went put we took extra gas but not afterwards

 

[J.C.W. 500]

Hey thanks again everyone for the helpful comments and suggestions. BTW, does anyone know a good Canadian online store that sells good quality fuel flow gauges?

 

[wildwest]

the more cid you have= the more fuel you will burn=no brainer!

 

[Charlie415]

Bought mine from Nikka

 

[TenMile]

Hey thanks again everyone for the helpful comments and suggestions. BTW, does anyone know a good Canadian online store that sells good quality fuel flow gauges?

http://www.gpscity.ca/lowrance-ep-60r-fuel-flow-sensor.html -- this is the sensor only - connect it to one of the new HDS units or to an LMF-200 or 400 and it provides fuel flow data.

 

[Hookin'up]

the more cid you have= the more fuel you will burn=no brainer!

Not necessarily, sometimes more cid/hp can make for a more efficient ride
for e.g. a 4.3l 190hp in a 24' boat is working hard to keep that boat on plane, however a 5.7l 270hp in the same boat works alot less to
keep it on plane , less load=less fuel burn
holds true most of the time, but not always the case esp in high perf applications

 

[cheech]

You may have to play around with props a bit. I had an old 20' Sangster w/a V8 4V (302) that got pretty good 'mileage' Usually cruised around 3200+. Never redlined it. Ran out of Ukee and never put more than a $100/day in it. Had different props from 15 to 25 and the best for cruising was with the 25.
gl with your rig.