Honda fuel usage

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Bushy
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Honda fuel usage

Post by Bushy » Mon Dec 10, 2018 6:25 am

Gday everyone, just trying to work out an approx fuel usage on my 75hp honda 4 stroke older carbie model.
Prob is i havent used it enough to work out my self so was hoping someone here may have a similar motor and could give me an idea what to expect. At the moment im working on 20 litres an hr running at 4500 rpm.



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theodosius
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Re: Honda fuel usage

Post by theodosius » Mon Dec 10, 2018 7:37 pm

Depends on boat, conditions, load etc but I run a yammie 80 4 stroke efi on a 490 top ender with a bit of gear and get 2.5km/l under normal conditions. Best economy is 3 but thats empty, glass and trimmed out. I always take way, way too much fuel for a trip though

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Flickin4em
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Re: Honda fuel usage

Post by Flickin4em » Mon Dec 10, 2018 11:02 pm

Grab a ski tube load it right up using a couple of big eskies and a bucket to fill them up with and head to manton. Best if you take the Mrs and kids too or a couple of fat mates on the fuel burn lap as extra weight for the trip

All good fun too 8) ....reset the trip log on the GPS or get an app for your phone to record the lap ...blast around for a bit. under an hour of laps on a full tank would be enough, but you may want to stay all day too. then a trip to the servo on the way home and it's job done :D .

The other top spot for a further run and a more productive fishing trip would be Corroboree Billabong. I'd be going for the 0530 launch and be back well before the evening's storm. Perhaps leave the ski tube at home for here tho.

☆☆☆☆☆☆ allow another half this calculation for emergency rations in case someone else runs out or you have to tow them. !!!

IT VARIES WAY TOO MUCH even with the same setup 2 different driving styles will produce different numbers. .... Your boats info is critical for anyone else to be even close.
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Bushy
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Re: Honda fuel usage

Post by Bushy » Tue Dec 11, 2018 6:23 am

Thanks fellas, yea flickin4em i got to try the new sounder out so will have to get a few fellas together and load the boat up.

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grumpy
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Re: Honda fuel usage

Post by grumpy » Tue Dec 11, 2018 2:10 pm

theodosius wrote:Depends on boat, conditions, load etc but I run a yammie 80 4 stroke efi on a 490 top ender with a bit of gear and get 2.5km/l under normal conditions. Best economy is 3 but thats empty, glass and trimmed out. I always take way, way too much fuel for a trip though
My DF80 EFI Suzuki on 4.55 Topender which is always loaded does the same as Theodosius on long runs about 2.5km/L and a bit better if glass off and running down the big rivers with the tide.

Cheers grumpy
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STANDY
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Re: Honda fuel usage

Post by STANDY » Fri Dec 14, 2018 10:45 pm

Have a 50hp Honda 4 stroke on a 455 seajay ( work on 3km/L never done the check though )

Best thing I noticed for better fuel economy 20 years ago when I used to race ski boats was the amount of difference a stainless steel propeller made.........

As Grumpy mentioned Tides is the biggest blowout to any fuel equations up here.


As theodosius mentioned nothing wrong with bringing fuel home.
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