Converting to run E85 is relatively easy. Simply change the injectors to approximately 25% larger ones. Dump in the E85 and go.
If you want to get fancy you could recurve your distributor (if so equipped) for better power and mileage. Edit: Your '91 probably has computer controlled timing, so you'd be out of luck there unless you went with an aftermarket ignition and a duraspark distributor or something like that, or found another way to change timing.
It gets a whole lot more complicated if you also want the option of running gasoline.
Last edited by rusty70f100; 05-18-2007 at 11:57 AM.
You could always do some experimenting to see how much E85 your car can handle. Start with a 20%E85 80%Regular mix then work your way up till the car starts running crappy. Then back it down to where the car is comfortable with it. If you have a high compression engine it can handle more E85. Right now Im running a 50/50 mix in my 99 F-150 and 98 Stratus and it works ok but I lose about 20 miles per tank. Currently E85 is only 10% cheaper than regular gas (at least where I buy it from) so Im barely comming ahead with the price differance.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.