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what gas consumption reading per engine could be logical?

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Old 09-04-2007, 09:41 PM
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Default what gas consumption reading per engine could be logical?

15 gal/hour per engine for example at 5000 rpm... does that make sense to you?

That is what my floscan tells me but I feel it must be more than that...

Any idea on that?
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Old 09-04-2007, 09:44 PM
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Which engine and h.p.?
Type boat?

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Old 09-04-2007, 09:45 PM
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check the other thread.
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Old 09-04-2007, 09:46 PM
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454-485 hp in F35-7 1989
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Old 09-04-2007, 09:48 PM
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A good rule of thumb is 10% of Hp @ Wot = GPH.
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Old 09-04-2007, 09:50 PM
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From past experience I would say it is burning 46-54 gph.
The above would be correct if near max rpm.
My 502/465s burned right at 47 gph wide open throttle.
They were carb motors..efi should be a tad more effecient.
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Old 09-04-2007, 09:55 PM
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46-54 per engine or for both?
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Old 09-04-2007, 10:05 PM
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Quote:
Originally Posted by tigweld View Post
A good rule of thumb is 10% of Hp @ Wot = GPH.
true, but most often under that real world. I've seen it and verified it more than once.

my 350 HP 454 mags would burn ~ 28 GPH WOT (accurately calibrated (<2%) Floscan)
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Old 09-04-2007, 10:10 PM
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Quote:
Originally Posted by jeff32 View Post
46-54 per engine or for both?
no, that's why I told you in the other thread YOU'RE READING 1/2!

your real GPH is about 30 GPH WOT on those 385's

been there done this! I just can't tell you off the top of my head after a few years and on my 5th 12 hour night shift which switch to change!

call tech! they are fantastic and will give you the answer!
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Old 09-04-2007, 11:14 PM
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If you are making 450 HP at 5000 RPM. My math says at .5 lbs of gas per HP you will use 225 lbs divided by approx 7 lbs per gallon = 32 gal per hr per engine. The FloScan should be reading in range of 29-35 gal per hour per engine
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