I had for a while, you can push 14-16:1 CR on it. I did not have a issue with corrosion. I think thats a methonal issue, not corn
Start with a alky carb or a E-85 spec carb. Was not that hard. Only real drawback was is you went through it about a good 1/3 faster. when I would cruise around on collage ave here I would be looking for a pump in half the time and if i didnt find it soon i was empty. But it can be ALOT of fun. cause you can build what is basicly a RACE gas engine that works perfect for e-85. And you will find people dump pistons and such for those CR's like 14:1 I even thought a 10: with a blower would make some serious power.
E85 requires approximately 30% more fuel flow than the same engine setup would require on gasoline. This is due to the fact that E85 is an oxygenated fuel and you can burn much more of it with the intake air the engine can draw into the cylinder. As a result an engine with no other change than switching to E85 with a proper tune can typically produce anywhere from 5% -15% more power than it could on gasoline. In extreme boosted applications power increases can be even higher.
E85 significantly cools in the intake air charge as it evaporates, this increases the volumetric efficiency of the engine, it can literally get more fuel and air into the cylinder and burn it completely on E85 than it could on gasoline. E85 has a wider flammability range than gasoline so it can be ignited and burned both at much leaner fuel air mixtures (good for fuel economy) and much richer fuel air mixtures (good for max power output) than gasoline.
http://e85forum.net/forum/viewforum.php?f=3&sid=523901d0013830efa1172a95394df465