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Old 27 July 2016, 23:23   #1
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Country: Canada
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Make: Zodiac Hurricane 530
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fuel consumption

I just came back from my first trip in my Hurricane 530 with a Mercury Jet80.
I had a fantastic time but was pretty surprised at the terrible fuel economy. I probably shouldn't have been given the engine is a 4 cylinder 2 stroke 115 hp head which translated in 80 hp at the head. Fuel economy is not it's strong suit, clearly.

I managed to get about 2 litres to the Nautical mile.

What I am wondering, is, what fuel consumption I might expect (A broad range is acceptable) if I were to switch to a 4 cycle 80 hp prop engine.

Thank you in advance, Rick
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Old 28 July 2016, 02:36   #2
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2 liters per 1,8 km it is 0,9 km per 1 liter

I have HIGHFIELD OM540DL with EVINRUDE 115 HO + Evinrude Rebel 19" prop
Usually till 3800 - 4200 RPM (which gives me about 45 km/hr - 50 km/hr) I see very often fuel consumption like:

2 km per 1 liter which is 2 times better
sometimes (wind waves)
1,8 km per 1 liter

It is moder 2T but when compare to HONDA BF100 (which is 4T) with the same boat (Steve from SeaSwift send me some details) I have the same consumption at higher speed.

5 people on board (about 300 kg), 2 batteries, 2 anchors, 100l of fuel, 20 l spare fuel, snorkel equipment for 5 people.

Boat weight with fuel and all items about 900 kg.
Passengers and bags - maybe 320

WOT is 5500 rpm
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Old 28 July 2016, 02:57   #3
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Rick, as a very broad rule of thumb mostly people with 6+ m boats here reckon on cruising somewhere around 1 NM / L obviously how it's driven, your speed, the weather/waves, the amount of kit you carry and the appropriateness of the particular engine to the hull all make a difference. Jets are less efficient but if you were getting less than 0.7 NM/L with a traditional outboard then I'd be disappointed. If you were getting more that 1.5 you are very well, until you get down to very small boats.

The guide used to be 4 stroke was 20-25% better fuel economy than 2 stroke but the difference isn't constant at all speeds.
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Old 28 July 2016, 06:39   #4
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if it helps my old mariner 4 stroke 100hp on 5.6m rib got 0.7lpnm

that is some serious fuel consumption you have there.

my 6.8 with 200 4 stroke is way way better than that.
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Old 28 July 2016, 10:47   #5
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Quote:
Originally Posted by dubrus View Post
if it helps my old mariner 4 stroke 100hp on 5.6m rib got 0.7lpnm

that is some serious fuel consumption you have there.

my 6.8 with 200 4 stroke is way way better than that.

Come on Paul don't keep us in suspense what do yo get with your new rig?


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Old 28 July 2016, 12:15   #6
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The 6.8 is 0.8l per statute mile with the 200
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Old 28 July 2016, 12:22   #7
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Quote:
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The 6.8 is 0.8l per statute mile with the 200
4 or 6 cylinders the df 200?
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Old 28 July 2016, 12:27   #8
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6 cylinder 200df
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Old 28 July 2016, 13:03   #9
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The 6.8 is 0.8l per statute mile with the 200
That's excellent bet you see the difference in your pocket
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Old 28 July 2016, 14:02   #10
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Quote:
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if it helps my old mariner 4 stroke 100hp on 5.6m rib got 0.7lpnm ...... my 6.8 with 200 4 stroke is way way better than that.
Quote:
Originally Posted by dubrus View Post
The 6.8 is 0.8l per statute mile with the 200
So when you say "way way better", you kinda mean "worse"?
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