Topic Review (Newest First)
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| 11-05-2008 11:46 AM | ||
| nesikachad |
Re: gasoline/ethanol OK for DA? Being a former race car nut, I can help. (Yay, I know something!) Ethanol is grain alky and this is very different from petroleum based alky like Methanol. While ALL alcohol fuels are hydroscopic, ethanol is much kinder/gentler than Methanol. It'll change the mixture a bit because it's lower in specific gravity that straight gasoline, but this may work for you since the stoichiometric ratio is a bit different for alky vs gasoline. Just remember toasty brown plugs and monitor head temps. Alky is going to run cooler than gasoline so it should actually run cooler. Know also that your fuel consumption will go up as you increase the ammount of ethanol. Gasoline is around 13:1 where's alcohol is 9:1. What I don't know is how the oil will respond to it. Probably be fine but I'd check first. My other question/concern would be the level of ignition timing (advance) that it'll tolerate. It should be more since the octane rating goes up as you add ethanol to gasoline. (I know E85 is around 107) I say run it and fear not. Get some E 85 and as long as you can fatten the motor up enough, it should really haul the mail. I know my 2004 blown, nitroused GTO loves it! (but it did take bigger injectors and a snorty fuel delivery set up to use it) It may require a change in fuel lines. They might swell. Not sure. Last but not least, CONTACT THE ENGINE MANUFACTURER. This would be my disclaimer! |
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| 11-05-2008 10:58 AM | ||
| phippsj |
Re: gasoline/ethanol OK for DA? So, does that make me Beerophilic and Obamophobic? |
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| 11-05-2008 09:44 AM | ||
| WrongWayRC |
Re: gasoline/ethanol OK for DA? Interesting info on E-85.. I wonder if anyone has thought of it for 2 stroke gassers? http://www.e85fuel.com/e85101/faqs/range.php I understand that 10% is probably a non issue...except that my 01 Ford Ranger has a ping for the last couple of years going over a certain bridge and I recently wonder if it is could be in the fuel. The driver's manual says to use regular only as high test will not allow the spark plugs to reach their 100,000 mile life. |
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| 11-05-2008 09:05 AM | ||
| Dr. Yankem |
Re: gasoline/ethanol OK for DA? So Dr. what you are saying is Snapasarus's rudder / plane at Joe Nall was Hyrophilic?[/quote] Elies' planes are Snapophilic. His rudder at Nall should have been Snapophobic. |
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| 11-05-2008 06:09 AM | ||
| pe reivers |
Re: gasoline/ethanol OK for DA? Quote:
The correct word is Hygroscopic. I quote from Webster: 1 : readily taking up and retaining moisture |
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| 11-04-2008 09:43 PM | ||
| Jcarte |
Re: gasoline/ethanol OK for DA? Quote:
Wow he sure set you straight, sometimes I get threadphobic because I'm afraid some smart ass will correct my grammar. So Dr. what you are saying is Snapasarus's rudder / plane at Joe Nall was Hyrophilic? |
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| 11-04-2008 05:13 PM | ||
| Dr. Yankem |
Re: gasoline/ethanol OK for DA? I think (not 100% sure) Ethanol is hydroscorpic (absorbs/attracts water) and as such the fuel system must be able to tolerate a small amount of moisture without rusting components. Someone please correct me if i am wrong.[/quote] Just as a point of information. There is no word "hydroscorpic". I think you mean "hydrophilic" meaning an affinity for water or from the latin "water loving." Somthing that is "hydrophobic "is just the opposite. |
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| 11-04-2008 05:07 PM | ||
| jfstrama |
Re: gasoline/ethanol OK for DA? This is quoted straight from the Walbro Diaphragm Carburetor Service Manual (Page 4): “Walbro carburetors can tolerate the legal limits of alcohols present in todays fuels: 10% ethanol, 5% methanol, and 11% of the octane enhancer MTBE (Methyl Tertiary Butyl Ether). Careless blending can sometimes result in percentages exceeding these levels on a local basis. You may have noticed that the material at the tip of the inlet needles is now a red colored viton, and that several fuel pump diaphragms are now made from a brown colored woven fiberglass. These new components were developed to increase the alcohol resistances of our carburetors. No carburetor will currently handle 100% alcohol fuels for an extended period.” Hope this helps! MadDog Joe |
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| 11-04-2008 04:57 PM | ||
| TheTank |
Re: gasoline/ethanol OK for DA? Quote:
Its all crap. We have had ethanol in our fuel up here since before I started flying gassers. Hundereds of gallons through my engines over the past several years and zero issues with carb diaphrams. Perhaps there are some bad diamphrams out there from a faulty production line, but I dont see that the ethanol could be causing the issue. |
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| 11-04-2008 04:21 PM | ||
| pe reivers |
Re: gasoline/ethanol OK for DA? years ago, Walbro solved the ethanol problem. Methanol is a different question. In old carbs, there is nothing to worry about if you spend them a membrane upgrade. The 10% bio fuel is safe to use. In Holland, it is even legally required, so no other fuel is available. Think we are grounded because of that? No way! Worry about lowish octane instead, and only use premium fuel grades and good oils in your engines. |
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| 11-03-2008 01:29 AM | ||
| Truckracer |
Re: gasoline/ethanol OK for DA? Gasoline containing ethanol may indeed be causing problems for your diaphrams but I doubt the ethanol is what is causing the problem! Modern gas formulations are a compound of many chemicals and solvents including toluene and xylent just to mention two of them and just these two solvents can account for up to 35% of the volume of modern gasoline. Now try soaking your diaphrams in these solvents and see if you have a problem. Will probably make the problems caused by 10% ethanol pale by comparison. Yet, people continue to blame ethanol for their carb problems when it is just one, rather mild ingredient in their fuel.The content of these and other solvents / chemicals varies considerably around the country and with the time of year. Winter blend gas usually has more light bodied solvents in it than summer blends. Summer blends are more stable in storage. |
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| 11-02-2008 11:30 PM | ||
| phippsj |
Re: gasoline/ethanol OK for DA? Forget the whales and the trees. SAVE THE DIAPHRAMS!!!! I think Jack Daniel's is drying up their brain cells. Everyone down here in Texas has been flying ethanol blended gasoline for years, including myself. No diaphram fatalities to report. (I quit listening to the know-everything, been there, done that, old timers after my first day at the club field.) |
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| 11-02-2008 10:52 PM | ||
| Jcarte |
Re: gasoline/ethanol OK for DA? I hate to keep talking about this, but I'm catching hell from the old timers in my club (which I'm almost an old timer myself). They are swearing the Ethanol is killing the diaphrams in the gas engines they own, one guy said he has changed 6 in the last month, and the weed eater shop mech he gets his parts from is telling him he has seen a rash of bad diaphrams and is ordering them by the hundreds. . Our club president and I have done some research and can't find any truth in the matter. Has anyone seen damage from the ethanol on their carbs? |
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| 01-18-2008 08:21 PM | ||
| AeroSheldon |
Re: gasoline/ethanol OK for DA? good info guys, I like it! |
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| 01-18-2008 07:45 PM | ||
| rede2fly |
Re: gasoline/ethanol OK for DA? for what its worth,,  on a eppisode of 60 minutes they were talking about gasoline and the ethanol in gasoline. this was to show that the oil companys were ripping the general public off... they said that in the usa, all gas has ethanol in it but, BUT it does not have to have listed on the pump UNLESS it is over this amount. and the amount was 10 %. and that also varried from state to state. but as i stated i dont work for any oil refineries. so i can only state what 60 minutes said. but this should be very easy to find out, as far as your state's requirements. so that was 10% or less they do NOT have to have it listed on the pump. i do know that in the upper states they have more. colder climates or winter they have much more in the fuel to keep it from freezing or what ever it does at below freezing. so i woud say what ever comes out of the pump is good to go. just stay to the reccomended octane and you shouldnt have any problems. this again was gone over when the price of the gas went up . and they were saying about all the different states requirements. the refineries were having to change all the blends for the different states. remember katrina. thats when all this was on the boob tube. they kept saying that we (the united states) need 1 blend for the whole usa and not per state. (this does not mean octane).
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