
Posts: 2384
Location: On the X that marks the mucky spot | 620's a big heavy boat and the 250HO is a big powerful engine. I would be surprised if you averaged better then 4mpg on that rig. I know on my bass boat with a 225 opti I average about 5mpg and I really watch my fuel flow display to make sure I'm running optimum. If I didn't I'd be running around 4mpg. At WOT I get it down to closer to 3-3.5mpg. Remember my boat is probably a good 500# lighter with 25+ fewer HP and an opti which is more efficient then the etech by all 3rd party comparison's I've read.
Also the prop you run can make a difference as well. I run a 25p most of the time, but if I run a 26p (fall usually to keep off the limiter) I lose around .5-1mph. Same thing when I run a 4 blade vs 3 blade (3 is more fuel efficient on my rig).
Edited by Muskie Treats 6/7/2011 10:43 AM
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