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Danny, Then I don't entirely understand, as running 2400 at 10,000 puts you at about 62% power and and at 100 ROP you should be burning about 10 GPH. So if you are running 8.5 GPH you must be running LOP, or at least at peak, already. Yes, you will likely save about 1 to 1.5 GPH, or about $5 per hour. So to save the $1,000 of the course you will have to fly 200 hours. Not many, actually. Plus you will be getting better range (fewer fuel stops and the fuel stops you do make can be at lower fuel cost locations), longer spark plug, oil and engine life. Cleaning 8 spark plugs costs, what, maybe $100, so every little bit helps. When running
ROP I could barely get 100 hours between cleaning and at LOP they will easily go 200 hours. I think if you add up all the savings you will find that the course will pay for itself in 100 hours if, that is, you leave taking full advantage of the course. And that's not counting the value of the piece of mind that comes from knowing more about how the engine operates. Again, just my opinion. Gary Casey
Gary,
et.al, I certainly can’t speak to what others are getting but I have GAMI injectors and my engine has been flow balanced. On consistent 2.5 hour flights from VA to MI I indicate about 8.5 to 8.8 gph. This is backed up by the amount of fuel I replace in the tanks which is about 22 gal. – never been more but sometimes a little less. I fly at 2400 rpm and whatever MP I can get (usually about 21”) at 10,000 ft. So again, for me, the expense of this $995 course just doesn’t work out for my ROI. |
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