excessive gas consumption

[ksuflash]

My 1970 Evinrude 60HP seems to be using lots of gas. I drove it WOT a total of 10-12 miles one day and I used 12 gallons of gas. Is this normal. If so, I need to get one large gas tank, instead of the 6gallon tanks that I carry 3 of. If this is not normal, any suggestions on how I can get better gas mileage? Motor runs just fine, no problems there.

 

[blueboat1]

Re: excessive gas consumption

It’s hard to say, if you have that 60hp on a river barge then that’s good, if you have it on the proper size boat w/proper prop it seems bad. Maybe give some more details as to your complete set-up (boat and load, prop size and rpms you hitting at WOT) and some more people can chime in with info.<br />Thanks and happy boating.<br />I have a 74 70hp on a 17ft aluminum used for fishing, bait tanks 18 gals of fuel, 2 batteries, from I run 35mph at WOT and can get about 12-14 miles out of a 6 gal tank with a 19 pitch prop

 

[Hooty]

Re: excessive gas consumption

As a rule of thumb, an engine will burn 10% of it's hp. a hour in gals. at wfo. <br />Example: A 70hp engine will burn 7ghp at wfo.<br /><br />Example 2: A 100hp engine will burn 10gph at wfo.<br /><br />c/6<br /><br />Hooty

 

[blueboat1]

Re: excessive gas consumption

pretty cool scale, thanks Hooty

 

[SeaMasterZ@aol.com]

Re: excessive gas consumption

I was going to tell you what hooty told me, but he beat me to it!<br /><br />(I still have second thoughts about that 125 Johnson, lol, the one woman bow riding brigade likes to blast along WAY more than fish, lol, something tells me if I am going to get fishing done, its going to be with a drag net designed for high speed trawling, lol)