MPG on a 225 merc?

JeffN

JeffN

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Any one guesstimate the nmpg of a clean 25' Wellcraft with a 02 y.o. clean 225 Merc on the back? I haven't had an outboard since the 70s and am concerned about what it may burn. If I'm worried, I shouldn't ask probably...
 
Cannot give a valid nmpg as it is affected by too many variables.

Based on the info given, figure roughly 19 GPH at wide open throttle.
 
Early 90's 225 so maybe saltwater series? It must be the old inefficient smoker tech so I would think 19-20 would be the good guesstimate, maybe 14-15 cruising.

Does it sound underpowered? Maybe it would run like the same boat w/260 outdrive...cruise 22-24mph.
 
How much does the boat weigh?

I think they get 12-14 gph at 4000 rpm's, plus oil.

I am putting an '01 225 EFI on a 20' Boston Whaler. I estimate 50-52 Mph top speed.
 
Ugh, went to see the boat tonight on the way home. What a weathered wreck. Maybe ok functionally but how does one price an 83 25' Wellcraft at 6k when it looks like it just returned from Omaha Beach? I compared online a bit and saw a clean one for 2500. Poor bloke isn't going to get 1/2 of his asking price. Just glad it was around the corner and not around the state.
 
I have a 22 MAKO CC Hardtop with a 2001 Yamaha Saltwater series 2 stroke it does about 20 gph wide open about 39-40 knots. Yes I loaded it up with solar panels, Garmin 740S, NMEA2000 network and (2) 31 series Lifeline AGMs.
Bill
 
A real quick, SWAG would be: between 1.25 nmpg and 3 nmpg.

My guesstimate could be off, but I'd bet half of yesterday's cheeseburger that you are close to 2 nmpg.

Clearly, the only way to find out is to actually do some test runs, or use an integrated fuel rate sensor/speedometer.

I would not bet anything that the nmpg is better than 5 nmpg.
 
Bill since my 22' Center Console is smaller and probably lighter I still have to hook up the NMEA2000 fuel sensor, it's installed just not wired into the backbone yet.
Bill
 
I have a 26 pocket cruiser with a 250 injected I/O. It does 12.5 gph (measured fuel consumption) at 25 knots (measured by gps) or 2.0 nmpg. I think that a two stroke and deeper vee bottom would put the lighter boat around 2 mpg, not any more.
 
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