Quote:
Originally Posted by Kracken
I am not using an hour meter and my previous boat (50hp less) had about the same GPH.
I have always thought 8-15 GPH was normal.
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If you don't use an Hour Meter, HOW are you keeping track of time. Because of the human element, just looking at your watch every now and then is not going to suffice for accuracy.
As I mentioned earlier, my 20 foot Donzi with a 5.7 liter Mercruiser (350 Cubic Inches/260 HP) burns about 3.5 to a little over 4 GPH overall, from putting around the docks @ 5 MPH to cruise at about 32 MPH....with an occasional goose up to 60. Looking at the boating magazines, it looks like a 350 @ wide open throttle would burn 21 GPH... IF... the engine would last an hour at WOT.
BTW: A
Two Stroke outboard will burn more gas than todays more fuel efficient
Four Strokes. The reason for this is that a two stroke "Fires" on every revolution of the crankshaft, whereas a
Four Stroke fires on
Every Other revolution.
EDIT: Lets not forget:
GPH stands for
Gallons Per Hour.