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There is alot of talk in the Marine Industry here in RI about this. Damage to fuel lines, damage to fiberglass and aluminum fuel tanks, and damage to internals of outboard engines. Wondering if it will become a concern for auto's, specifically Carbs?
I have been searching the net and come up with alot of different views and opinions.
 

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Been using it in the cars since it came out in Iowa, early 80's I think. Had 2 cars the fuel pumps went out on after a couple of tanks but they were both fairly old and the carb on the old truck would need a kit after sitting with it all winter but stabilizer has seemed to cure that. The weed eater and the leaf blower don't like it. My Sable and AMC Eagle develope a hot soak problem when running it, but the Escort will ping without it. Guess I'm confused, I do not have any experiance with the E85. I'm just refering to Gasohol it's just the 10% blend.

<font size=-1>[ This Message was edited by: 5851a on 11/4/06 4:54pm ]</font>
 

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Ethanol loves to absorb water. Modern cars have closed fuel systems with any venting taking through a charcoal canister plus the tank normally holds a little pressure. Older vehicles have vented systems, usually through the cap so they will pull in moist air whenever the temperature drops. Plus a hobby car isn't driven as much, especially in the winter so a tank of E85 or whatever will have a chance to soak up enough moisture to do a lot of corroding and gunking.
 

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Thats the same kind of problems they had and still have in Brazil...only worse, since their fuel is almost 100% alcohol. From what I read, some cars in the colder climates have an auxilary tank, which has gasoline in it. They use that to start the car until it warms up. Apparently, running on high percentage or pure alcohol, the engine doesn't get very hot?

If I was running E85 in an older car, one that doesn't get drivent every day... I would make sure to put a drain plug in the tank to allow you to bleed off any water or crap that builds up in the tank.
 

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Yep, generally all alcohol-burning cars run at a much lower operating temperature.
 

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What about a daily driven car thats diven in the cold and carborated running on the 10% ethonal blend?
 

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In ND, where I'm from, the local govt is pushing ethanol hardcore, since well we grow corn. All gas is at least 10%. When I was running my holley carb on my car, i would go through about 5 needle and seat assemblies a summer. Same as my other friends as well. With my demon carb, so far so good. My friends still have the same issue, maybe the demon stuff is different? We all carry a fresh set in the glove box cause we've all been in the situation where we had to call in a favor and get rescued from the side of the road.
 

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You flat cant use it here in a carbed car during the summer if you are using a stock fuel pump. That crap boils off to easy, and you have huge vapor lock problems. Most stations here only run the 10% blend in the cooler 5 months of the year, but once in awhile you come across a station that sells it year round. I've had to put electric pumps on most of my carbed vehicles just for that situation.
 

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My friend's dad fixed his needle and seat problem by going to the smallest alcohol needle and set assembly he could find. Guess that's an easy fix.
 

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Alcohol is hygroscopic, which means it wicks up water. Mix it with gas, and you have acidic goo.

Ethanol has a significantly lower heat value than gasoline. It could produce comparable mileage if the engine was optiized to take advantage of its high octane rating and excellent latent heat of vaporization characteristics.

Hang a turbo on an E85 motor with variable valve timing, an intercooler and a digi controlled waste gate, and you could put the screws to it big time. Would not be out of the question to have a 3.0L engine (@ 15lb. boost) make power like a 6.0L aspirated engine.

But... because E85 has to be 15% gas, and come off the same assembly line as gas, and here's the kicker -- still be able to run on 100% 87 octane if necessary -- that ain't in the cards. If something fouled up, an engine with 20lb of boost on 87 would make a small mushroom cloud shortly after the Big Bang.

E85 will tear up a fuel system not designed for it. The problem is the lubricity of the alcohol is non-existent. Gasoline has certain properties, including trace amounts of parrafin, etc, which keep the electric pumps from seizing up.

Race cars that run methanol already have provisions for this type of fuel, but it is really expensive.

Step up to stainless lines and injectors made with premium polymers and stainless guts, get a stainless tank, or one plated in a non-corrosive finish, get all the rubber out of every seal and connection... easy to do in a factory, impossible for the average guy.

Alk in a carbureted engine in hot weather is trouble, period, you need to be able to really pressurize the fuel system to stop fuel from boiling off.

Benefits are many if you can figure it out...

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Lower pollution and greenhouse gas
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