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Topic: yamaha 60hp 2 stroke feul consumption  (Read 375 times)

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Offline pistolpete

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yamaha 60hp 2 stroke feul consumption
« on: June 12, 2019, 09:31:51 am »
Hi guys. New to this forum.
 
I have a question that I hope you guys can help with. I have  a gamefish 510 cc with 2x yamaha 40hp 2 stroke 2 cylinders on. The boat goes  well enough with 2 up but I think it might be nice to have a few more horses. Going up to 60s will give me 50% more horsepower but will this mean that I will use 50% more fuel?How much more fuel would 2 stroke 60s use than the 40s considering that the 40s  have to work really hard and the 60 s wouldn't have to work as hard to do the  same job. Assume that the circumstances would be the same ie. Speed weight sea  conditions etc. Has anyone had experience of a similar upgrade? Any input would be appreciated.Thanks in Advance

Offline dugong

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Re: yamaha 60hp 2 stroke feul consumption
« Reply #1 on: June 12, 2019, 09:40:29 am »
Without doubt heavier on fuel but the difference will be nothing to be concerned about.
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Offline Rory mundy

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Re: yamaha 60hp 2 stroke feul consumption
« Reply #2 on: June 12, 2019, 04:07:01 pm »
i think they will be very close to the same those 40s are heavy on fuel (my one is) they made to run on bad fuel and takes a rock to block those carbs,
the 60s also swing a big prop so you never going to have to run them hard

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Offline pistolpete

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Re: yamaha 60hp 2 stroke feul consumption
« Reply #3 on: June 13, 2019, 08:20:03 am »
Thanks for the feedback guys. Yes, those 40s do have huge jets. i reckon it could suck a fly through the carbs and it would come out the exhaust with its wings still on :-)

Offline Capt. Hook

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Re: yamaha 60hp 2 stroke feul consumption
« Reply #4 on: June 19, 2019, 10:13:28 am »
I think you will find consumption about the same if not improved, I upgraded from 100s to 115s on one of my boats in the past and fuel consumption was better with the bigger motors
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