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#71
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MoGas Tips, Tricks, Concerns, How To
Jay Honeck wrote:
Hmmm. Let's see. Shall I believe the guy who runs a multi-million dollar aircraft exhaust system business (and has no incentive to lie to me), or shall I believe Usenet? Teledyne Continental and (I think) Lycoming have both gone on record to say that mogas is damaging to their engines. They are certainly multi-millon dollar aircraft engine companies and have have no incentive to lie to you. Yet you, Jay, are an ardent user of mogas. Who do believe: the engine companies or Usenet? I'd ask your exhaust system rebuilder to show you the data. I doubt he really has any and that he is perpetrating yet another aviation old wives tale. If he does actually have valid data, I'd wager that a different conclusion could be drawn from it. -- Frank Stutzman (who uses both mogas AND LOP operations) Bonanza N494B "Hula Girl" Hood River, OR |
#72
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MoGas Tips, Tricks, Concerns, How To
.... Jay Honeck wrote: Hmmm. Let's see. Shall I believe the guy who runs a multi-million dollar aircraft exhaust system business (and has no incentive to lie to me), or shall I believe Usenet? "Frank Stutzman" wrote in message Teledyne Continental and (I think) Lycoming have both gone on record to say that mogas is damaging to their engines. They are certainly multi-millon dollar aircraft engine companies and have have no incentive to lie to you. They are also multi-million dollar aircraft engine companies that recommend against LOP operation. (Unless you are running a FADEC system). Allen |
#73
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MoGas Tips, Tricks, Concerns, How To
"Bela P. Havasreti" wrote in message ... In reading about this somewhere (AvWeb? EAA?) I recall words to the effect that the refineries can get up to about 97 octane without any lead, and they only add as much in to get to (or slightly exceed) the 100 octane rating. This one: http://www.avweb.com/news/columns/182149-1.html That's it! Thanks for the link (bookmarked it this time). Most welcome!! In another article, Deakin was talking about GAMI running a 375HP Lycoming 540 (the one most prone to detonation) on unleaded 95 octane gas on their test-stand with their experimental PRISM system with nary a burp. AIR, they've run TNIO-550's on mogas with the PRISM system, too. Unfortunately, they're about three years overdue for their hoped for STC. |
#74
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MoGas Tips, Tricks, Concerns, How To
"Or maybe you can go back and bury your head in the [corn]."
Get it right: "Or maybe you can go back and bury your head in the [ethanol]." :-) -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
#75
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MoGas Tips, Tricks, Concerns, How To
"Jay Honeck" wrote in message oups.com... "Or maybe you can go back and bury your head in the [corn]." Get it right: "Or maybe you can go back and bury your head in the [ethanol]." :-) Dammit! Use a STRAW!! |
#76
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MoGas Tips, Tricks, Concerns, How To
"Allen" wrote in message . com... They are also multi-million dollar aircraft engine companies that recommend against LOP operation. (Unless you are running a FADEC system). "Matt Barrow" wrote in message ... Have they ever shown you or anyone else REAL DATA? No? Gee, why not? Yes, like Lycoming who recommends 50ROP. Got any idea what THAT will do to your valves, heads, exhaust system? Oh, and Columbia recommends LOP for it's IO-550'ed 400 model. Well gee, think of the lure that TCM would have to produce engines for aircraft manufacturers if they could tout running lean of peak. They don't. Why not? Warranty costs. Get a clue. |
#77
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MoGas Tips, Tricks, Concerns, How To
Matt Barrow wrote:
"Allen" wrote in message . com... ... Jay Honeck wrote: Hmmm. Let's see. Shall I believe the guy who runs a multi-million dollar aircraft exhaust system business (and has no incentive to lie to me), or shall I believe Usenet? "Frank Stutzman" wrote in message Teledyne Continental and (I think) Lycoming have both gone on record to say that mogas is damaging to their engines. They are certainly multi-millon dollar aircraft engine companies and have have no incentive to lie to you. They are also multi-million dollar aircraft engine companies that recommend against LOP operation. (Unless you are running a FADEC system). Have they ever shown you or anyone else REAL DATA? No? Gee, why not? Yes, like Lycoming who recommends 50ROP. Got any idea what THAT will do to your valves, heads, exhaust system? Oh, and Columbia recommends LOP for it's IO-550'ed 400 model. Mirage/Malibu models with certain engines need to be ran LOP, per the POH, too. From what I've been reading on the Mooney list by Walter Atkinson, LOP is a Good Thing, and even doable on carbureted engines (one needs to play with the carb heat setting, an engine analyzer and a carb temp gauge are de rigueur). -jav |
#78
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MoGas Tips, Tricks, Concerns, How To
Bela P. Havasreti wrote: Around here the grades on the pump are 83,89 and 93. Here=South & Central Arkansas. I think he's mistaken on the 83. I've always wondered why the mogas octane levels are different around various areas of the US. Where I live (northwest), our mogas is 87, 89 and 92. The lowest octane that you find in a given area has to do with altitude. The higher you are the less octane you need. Around here regular is 85.5 |
#79
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MoGas Tips, Tricks, Concerns, How To
Allen wrote: They are also multi-million dollar aircraft engine companies that recommend against LOP operation. (Unless you are running a FADEC system). Yes, suddenly it's OK to run LOP when you give them $10K for their FADEC. |
#80
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MoGas Tips, Tricks, Concerns, How To
Allen wrote: Well gee, think of the lure that TCM would have to produce engines for aircraft manufacturers if they could tout running lean of peak. They don't. Why not? Warranty costs. Get a clue. It doesn't matter where you run your engine. If you run it wrong it will cause warranty claims. |
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