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Lets talk Ethanol.........

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Old 05-09-2007, 10:52 AM
  #21
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To run E85, yes you do need to re-jet your carbs. Depending on the engine you may need to upgrade your fuel system, because you need to burn approximately 30% more at the same power level.

It would not be good for your run of the mill motors. People running 1000 hp engines on race gas, though, could save a lot of money running E85.

Fuel vaporization with Ethanol varies a lot due to temperature, which might require some re-tuning. I would think that the range of temperatures boats operate in would be constant enough to come up with a "good enough" tune, though. Plus even high hp boat motors aren't as close to the ragged edge as alcohol drag cars.
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Old 05-09-2007, 11:29 AM
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Quote:
Originally Posted by sleeper_dave View Post
To run E85, yes you do need to re-jet your carbs. Depending on the engine you may need to upgrade your fuel system, because you need to burn approximately 30% more at the same power level.

It would not be good for your run of the mill motors. People running 1000 hp engines on race gas, though, could save a lot of money running E85.

Fuel vaporization with Ethanol varies a lot due to temperature, which might require some re-tuning. I would think that the range of temperatures boats operate in would be constant enough to come up with a "good enough" tune, though. Plus even high hp boat motors aren't as close to the ragged edge as alcohol drag cars.
A lot of engine manufacturers are also increasing jet sizes slightly to account for E10.
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Old 05-09-2007, 12:38 PM
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hmm, i might have to check this E85 out for the supercharged ski's been running 110l for the increased boost, but this sounds like it might be worth a shot.
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Old 05-09-2007, 04:05 PM
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Check your local Top alcohol class draggers...
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