Thinking about buying a 1999 Grady Marlin with twin 250 HP Yamaha OB. Any body have a guess on how much gas I should expect to burn ? And what kind of range I should get? Thanks Ken
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1999 30 Marlin
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JUST-IN-TIME
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ocnslr
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JIT is correct on the WOT fuel burn. We had a single 250HP OX66 and WOT was about 27-28GPH.
If you cruise at 4000-4200RPM, you should see about 16-18GPH per engine.
You can probably figure on 1.0nm/gal as an overall average. You may do better, or worse, depending on speed, sea state, wind, boat load, bottom condition, etc.
Best of luck,
Brian
If you cruise at 4000-4200RPM, you should see about 16-18GPH per engine.
You can probably figure on 1.0nm/gal as an overall average. You may do better, or worse, depending on speed, sea state, wind, boat load, bottom condition, etc.
Best of luck,
Brian
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BobP
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I have a 1998 30 Marlin w/twin 250 ox66. I just ran offshore and total trip was 117 miles. 90 of that was running at 3800 rpm which runs my boat at 28 - 30 mph full of fuel and gear with 4 people. I used 95 gal of fuel. I ran a trip in the spring of 143 miles full of fuel no water and only myself and used 98 gal. So in general I burn around 1.1 gpm give or take. WOT was 48 mph couldn't tell you what fuel burn was I was just testing props and holding on.
I have a 92 Marlin w/ 99 twin 250 ox66s. Depending on sea state and wind, the best I can average is a little over a gallon a mile. Best range is around 3900 - 4100 rpms and I can do 28-31 mph burning 28-30 gph.
tiderunner
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I run @ 3700 burning 19.7 GPH doing 24knts . 1/3 fuel , full water tank , and way too much gear . I think that it is exceptable . I do have a full tower so I drag more than others. My props are 17x15 1/4 bottom is real smooth after an extensive cleaning in the off season .
93 Marlin with t/250 99 ox66
93 Marlin with t/250 99 ox66
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Had a bimini with t/f250's and at cruising i was doing 1.3 to 1.5 MPG, with the 330 and same motors i get 1 to 1.1 and less speed.So your marlin should get 1.2 to 1.4 MPG at about 32 MPH.
LittleMrs
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JUST-IN-TIME said:so around $250 an hour at WOT :shock:
I try not to think of things that way :lol: