E85

[lbjamm]

I see guys talking about using it. I know it is cheaper. What are other benefits? Need higher CR to use it. What is octane rating? Just curious.

 

[alex456123]

it will destroy yo carb? (from what i know)

 

[rappy'97]

There is a lot of Raptor 700 guys running it on bigger builds. The octane rating is around 105 on an exact mix of e85, but it varies by batch. For example, some batches are e80, some less, etc. That's the only problem, its somewhat inconsistent. And, its not that great of an idea for trail rider either, being your fuel consumption drops by about 30-50%...

Overall, there is some power gain, usually its about 3-5hp if you run it a tad on the lean side.

And you have to purge it.

 

[beastlywarrior228]

It will allow a higher compression ratio but ethanol is highly corrosive

 

[liftedhigh]

It will eat all of your seals in your carb and you will have to rejet the carb so you don't lean out and blow the engine. It is a great cheap race gas, I used to run it all the time in any street car I built that was over 700hp or pushing over 18lbs of boost. Wouldn't be worth it in the little 350 engine. You only gain power from it by raising CR and advancing ignition timing.

It's ok for a NA engine, great for a nitrous engine and amazing for a boosted engine.

 

[1998yamahawarrior]

There is a lot of Raptor 700 guys running it on bigger builds. The octane rating is around 105 on an exact mix of e85, but it varies by batch. For example, some batches are e80, some less, etc. That's the only problem, its somewhat inconsistent. And, its not that great of an idea for trail rider either, being your fuel consumption drops by about 30-50%...

Overall, there is some power gain, usually its about 3-5hp if you run it a tad on the lean side.

And you have to purge it.

Your high on the percents that you your fuel consumption goes up. Its closer to at max 20-25%

 

[liftedhigh]

Actually when switching to E85 you need to add 30% more fuel to reach the same power as gas.

 

[Gen1Pat]

E85 is 85% ethanol and 15% gasoline. It's not very abundant in my neck of the woods.

 

[rowdy_sohc]

Actually when switching to E85 you need to add 30% more fuel to reach the same power as gas.

This is guy is correct here. I have to run 120lb injectors now to compensate for the more fuel I have to run in my car now for it.

Winter time is the worst time to buy E85. They add all kinds of additives during this time for winter time use

 

[Gen1Pat]

And you need to upgrade the fuel lines and seals so it doesn't get eaten all to hell.

 

[rappy'97]

Your high on the percents that you your fuel consumption goes up. Its closer to at max 20-25%

I disagree, as stated in my first post. If you add 20% more fuel, you will run too lean, and pretty much destroy your engine. Methanol is 60-50% generally, so, why would e85 be 20%?

 

[1998yamahawarrior]

You may have to jet that much higher, but it doesn't mean it's gonna burn that much all the time. Methanol is a completely different animal. Generally your fuel economy will drop 20 to25%, just because you jet that much higher doesn't mean it's gonna use that much at little to no load.

 

[Gen1Pat]

Yup, ethanol and meth fuels are worse on fuel milage. So, in an attempt to use less gasoline, they blend ethanol in with it. Which just reduces the fuel economy of a vehicle, making you buy more gasoline... How is this better? Idiots...

 

[liftedhigh]

I really see no need for E85 on any 4 wheeler unless it's boosted. If you want to run very high compression (which is a waste on these small engines when you can run more timing and get more power) then it would be much cheaper to run a meth injection system. It would only spray at WOT so you maintain good gas mileage and you wouldn't have to do anything to the carb. Meth injection is my favorite form of octane boost for high powered street cars.

Another downfall of E85 is hard cold starting. Which is no problem in a car but a 4 wheeler you would probably drain the battery before starting in 30* or below.

 

[alex456123]

meth injection? i dont want my quad to get high!

 

[beastlywarrior228]

meth injection? i dont want my quad to get high!

NO "whack"

 

[alex456123]

OW that hurt! beastly! why? :cry:

 

[rappy'97]

Another downfall of E85 is hard cold starting. Which is no problem in a car but a 4 wheeler you would probably drain the battery before starting in 30* or below.

Thats why you purge it. Then it starts easy...

 

[Gen1Pat]

E85 is is 85% ethanol and 15% gasoline. Ethanol is also called ethyl alcohol or grain alcohol, because it is usually made from a grain and is the same thing found in alcoholic beveragess, such as beer, whine, and distilled spirits such as whiskey. Ethanol is composed of two atoms and six hydrogen atoms with one added oxygen atom.

Pure ethanol has an octane rating of about 113. E85, which contains 35% oxygen by weight, has an oxtane rating of 100 to 105. This compares th a regular unleaded gasoline which has a rating of 87.

NOTE: The octane rating of E85 depends on the exact percent of ethanol used, which can vary from 81% to 85%. It also depends on the octane rating of the gasoline used to make E85.

Flex fuel vehicles have a more robust fuel system then a vehicle set up for E10. These improvements include:

*Stainless steel fuel rail
*Graphite commutator bars instead of copper in the fuel pump motor (ethanol can oxidize into acetic acid, which can corrode copper)
*Diamondlike carbon (DLC) corrosion-resistant fuel injectors
*Alcohol resistant O-rings and hoses

Heat energy of E85 is less then gasoline. Gasoline has a 114,000 BTUs per gallon
E85 has 87,000 BTUs per gallon.
This means that the fuel economy is reduced by 20% to 30% if E85 is used instead of gasoline.

The 15% gasoline in the E85 blend helps the engine start, especially in cold weather. Vehicles equipped with this capability are commonly referred to as:

*Alternative fuel vehicles (AFVs)
*Flex fuels
*Flexible fuel vehicles (FFVs)

Using E85 in a flex fuel vehicle can result in a power increase of about 5%. For example, and engine with a rated 200hp using gasoline or E10 could produce 210hp if using E85.

NOTE: E85 may test as containing less than the 85% ethanil if tested because it is often blended according to the outside temperature. A lower percentage of ethanol with a slightly higher percentage of gasoline helps engines start in cold climates.

E85 FUEL SYSTEM REQUIREMENTS: Most E85 vehicles are very similiar to non-E85 vehicles. Fuel system components may be redesigned to withstand the effects of higher concentrations of ethanol. In addition, since the stoichiometric point for ethanal is 9:1 instead of 14.7:1 as for gasoline, the air-fuel mixture has to be adjusted for the percentage of ethanol present in the fuel tank. The benefits of E85 vehicles includes:

*Reduced pollution
*Less CO2 production
*Less dependence on imported oil



There. I dropped a little knowledge on ya! lol

 

[lbjamm]

^ Did you copy and paste that. lol