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Having a “table” or a fuel curve is not going to verity YOUR fuel burn (GPH) in your boat under your operating conditions..
What it going to do is show you what the engineers have, “more or less”, designed the engine to produce as to HP along a power curve at various RPM’s and allows the engine to meet its expected life (TBO)–In this case, somewhere in the 75000-90,000 gallons of fuel burn from this engine .. Of course, in the type of boats we deal with in this forum, you just about never see an engine engine literally wear out and need an overall–The “nut behind the wheel” has basically assured that for a multitude of other reasons since I have being doing this…
Next– The simplest way to assure your engine ( mechanical without a GPH measuring device) is running very close to the “on-paper” power curve, # 1 would be sure your tach is accurate and that your engines, under real working conditions with the vessel fully loaded, can easily reach not less than 100 RPM over your minimum rated RPM of 2600.. That would mean that at WOT, your engine(s) reach over 2700 RPM and do it without struggling to get to that RPM..
So before we go past here, is your vessel propped to allow this?
Since there were two M-2 versions, post a serial number. I will post the curve that matches your CPL.
Tony
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