Help..Marlin Owners fuel burn question

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altouchet

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I'm thinking of moving up to a 300 Marlin. I'm looking at older boats around the year 2000 with 250hp 2 stroke Yamahas. Just wondering what the fuel burn would be at cruising speed compared to a newer model with 4 stroke Yamaha 250's.
Also, will the Marlin remain comfortably on plane at around 25 mph with twin 2 stroke Yamaha 250's, or will it be on the verge of falling off of plane at that speed?
Your input is appreciated.
 
I have an '03 Marlin with 2 X F225s. It will plane at 20 knots at 4000 rpm. Fuel burn at 25kts and about 4400 rpm is about 19 gph which yields about 1.3 mpg under average conditions. One thing about the hull is that it doesn't really "pop" up on plane, it gently rises so that it is almost imperceptable as to when you are fully on plane, kind of like a semi displacement hull until you are fully on plane. This is of course if you are carefull with the throttles in order to be conservative. You can always go to the firewall, but I feel that it puts too much stress on the engines if you do that on a regular basis. BTW max speed is 35 knots, but it sucks gas like there's no tomorrow at that speed.
 
Mine's a 2001 with OX-66 250 EFI 2-strokes.

I can stay on a plane down to about 18 knots (3300 rpm) but she runns better at 4,000-4,200 which gives me about 25 knots and about 25 gph burn. I just always figure on 1 nmpg. Sometimes it's .9nmp (full load going to the Bahamas) and other times (1/3 tank and fairly light) I might be able to get 1.3nmpg.

I was told by my Grady dealer "Don't repower expecting to get big fuel savings".

As far as buying one, do it, they are great all-around boats!! Buy the "nicest" boat that you can easily afford to own (maintain, insure and use) and let the market show you what's out there.
 
Thanks for the replies. Those figures are about what I expected.
 
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