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#61
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MoGas Tips, Tricks, Concerns, How To
"Matt Barrow" wrote in message ... "soxinbox" wrote in message ... If you run your car engine on 80 octane mogas, it will usually run fine. If your car overheats, it will start to knock. If you have 100 octane gas it will start to knock at a higher CHT than if you ran at 80 octane. This is not usually a problem in a car that has a radiator and thermostat to regulate the temperature. I can't remember seeing anything less than 85 octane car gas since, oh, maybe the 60's? Around here the grades on the pump are 83,89 and 93. Here=South & Central Arkansas. |
#62
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MoGas Tips, Tricks, Concerns, How To
"Jay Honeck" wrote in message oups.com... As posted before, the head honcho at Dawley Aviation (the exhaust system folks in Burlington, WI) told me personally that running lean of peak has been the best thing that EVER happened to their business. And has been pointed out in this group previously, he's full of ****. 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), Who said he was lying? Golly, what a conundrum... Indeed, when you don't know the difference between "falsehood" and "mistaken". English major, huh? Maybe you can have him explain how he's doing such a great business in when maybe 5% of the aircraft are being run LOP? Maybe you can have him explain how that happens when the EGT is symetrical on either side of peak EGT, and the CHT is actually cooler...much cooler? or shall I believe Usenet? Did he give you as data-intensive an answer as you got on UseNet (complete with charts and graphs? Or maybe you can go back and bury your head in the sand. |
#63
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MoGas Tips, Tricks, Concerns, How To
On Fri, 12 May 2006 08:42:59 -0500, "Gig 601XL Builder"
wrDOTgiaconaATcox.net wrote: "Matt Barrow" wrote in message ... "soxinbox" wrote in message ... If you run your car engine on 80 octane mogas, it will usually run fine. If your car overheats, it will start to knock. If you have 100 octane gas it will start to knock at a higher CHT than if you ran at 80 octane. This is not usually a problem in a car that has a radiator and thermostat to regulate the temperature. I can't remember seeing anything less than 85 octane car gas since, oh, maybe the 60's? Around here the grades on the pump are 83,89 and 93. Here=South & Central Arkansas. 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. Bela P. Havasreti |
#64
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MoGas Tips, Tricks, Concerns, How To
On Thu, 11 May 2006 19:01:16 -0700, "Matt Barrow"
wrote: "Bela P. Havasreti" wrote in message news Perhaps a more useful comparison would be how much lead is/was in 80/87 vs 100LL? Those of use with older, low compression engines that were designed to run on 80/87 may be introducing 4 times the amount of lead into our combustion chambers by running 100LL than the original designers had intended for. 80/87 has a maximum of 0.5 grams of lead per US gallon while 100LL has a maximum of 2.0 grams of lead per US gallon. Unleaded Mogas is... well... Unleaded! 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). Bela P. Havasreti |
#65
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MoGas Tips, Tricks, Concerns, How To
"Bela P. Havasreti" wrote in message ... On Fri, 12 May 2006 08:42:59 -0500, "Gig 601XL Builder" wrDOTgiaconaATcox.net wrote: "Matt Barrow" wrote in message ... "soxinbox" wrote in message ... If you run your car engine on 80 octane mogas, it will usually run fine. If your car overheats, it will start to knock. If you have 100 octane gas it will start to knock at a higher CHT than if you ran at 80 octane. This is not usually a problem in a car that has a radiator and thermostat to regulate the temperature. I can't remember seeing anything less than 85 octane car gas since, oh, maybe the 60's? Around here the grades on the pump are 83,89 and 93. Here=South & Central Arkansas. 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. Altitude - higher needs more octane. |
#66
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MoGas Tips, Tricks, Concerns, How To
("Matt Barrow" wrote)
"Or maybe you can go back and bury your head in the [corn]." Montblack |
#67
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MoGas Tips, Tricks, Concerns, How To
Altitude - higher needs more octane. Altitude-higher needs less octane Karl ATP CFI ETC "Curator" N185KG |
#68
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MoGas Tips, Tricks, Concerns, How To
"karl gruber" wrote in message ... Altitude - higher needs more octane. Altitude-higher needs less octane Correct -- that's what I get for rewording it three times. |
#69
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MoGas Tips, Tricks, Concerns, How To
"Montblack" wrote in message ... ("Matt Barrow" wrote) "Or maybe you can go back and bury your head in the [corn]." Oh, now that's low (this time of year). |
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