E85 in a foxbody??

[ProSlow5.0]

what are your guys opinions about this? i have a carbed 306 with a demon carb.. i kmow that id have to rejet it and time it and all the other fun stuff but what do you guys think?

 

[1990_LX]

I'll stick with good ol 93.

 

[ProSlow5.0]

I'll stick with good ol 93.

what about a mix of e85 AND 93?? ;]

 

[04 orange cobra]

Depends on how much HP your pushing or future MODS ??

 

[ProSlow5.0]

Depends on how much HP your pushing or future MODS ??

ehh im pushing around 300hp give or take a little

 

[BMad]

A lot of guys at the track switching to e85. It usually costs less than half of what you pay for racing fuel. The down side is that you use more of it. From what I heard, it also keeps the engine cooler and consistent (good for bracket racing). The guy that I know that runs e85 tuned his engines on a dyno, and is a hard core racer, so I wouldn't just toss bigger jets in the engine and take her for a ride.

 

[ProSlow5.0]

Well I just filled up on it and adjusted the carb a little bit and and advanced the timing. It runs amazing! The only problem is on cold start it breaks up a little bit

 

[stanginthe11s]

e85 requires about a 30% increase in fuel supply across the board so you need to change the pump and the carb at minimum, and if youre running small lines youll need to upgrade those as well. rejetting the carb will cause problems that you are not aware of, there is a very good reason they make carbs just for e85. if you are prepared to ruin your engine, carb and fuel system then by all means continue. e85 is not cheaper than reg. gas but it is more consistent and can produce more power if you know what youre doing, the biggest problem with e85 up here is it is not e85, its a varying blend that can be e65, e75, e85, etc. it changes by season and by vendor so it makes it hard to tune. also you need to understand that e85 does not have the same stoich so tuning for 14.7 will not work. do research before you destroy your car.

 

[dsblk93gt]

Yea, you really should not be running E85 without the proper changes. Here is an article with more info.
Car Gasoline - Ethanol For All - Mustang & Fords

To run E85 fuel in an early car, the fuel system must not have any bare or unprotected aluminum, magnesium, or rubber components as the ethanol attacks them all. Ethanol conducts electricity whereas gasoline does not, so any electric fuel pumps used must be nonconductive where the fuel transfers through the pump. Likewise, any rubber diaphragm in a mechanical fuel pump could be subject to failure.