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Old 15-01-2015, 10:10   #16
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Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
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Re: Fuel consumption on rebuilt Westerbeke 4-107

Originally Posted by John Boor View Post
I have a day tank and thought of using it as you suggest but would be a long drawn out event. I live on Lake ontario north of Prince Edward county and we have no current and a lot of calm days. My calculation would not be super acurate but would give me bench mark to get started.

I agree everyone should have a bench mark on usage. Most everyone motors at a given RPM it is nice to know about when you will be sucking air.

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Old 15-01-2015, 10:12   #17
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Join Date: Mar 2014
Location: Canada
Boat: 1971 Irwin 37cc
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Re: Fuel consumption on rebuilt Westerbeke 4-107

Here is my last post on this issue. I went to boat and checked prop specs, I have two props a 2 blade and an installed 3 blade both with 16LH10 stamped on them. I used a propcal .xl program and with my 1.86:1 gear box I get for a 2 blade 16x11, for a 3 blade 15x11 so prop size is correct. I cannot go with the run 1 hour fill run another hour at different RPM as this will take too long, and, I do not have good access to day tank fill each time and how "full is full" hence the smaller Quantity of fuel. I did the GPH calculation and came up with 0.28 at 1600 and 0.55 at 2000 and at recomended max of 2400 (manual specs 85LBS at 2400) I suspect this is max tourque output, I calcluate 0.94gph these look good but will check in spring.

Thanks for all your interest in this issue.


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consumption, fuel, westerbeke

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