Running e85 on a 2 stroke? Will it work?

[Taras]

Just wondering if anyone know if e85 will work on a 2 stroke? Or it will break pretty quick?

[Beer]

You have to run 30% more fuel; so plan on rejetting the carb pretty agressively. If you run it on e85 on stock jetting it will run lean as hell.

[Orangegsx]

I wouldn't do it. Not really worth the hassle.

[AWDimprezaL]

I would suggest that if you were looking for more power you shouldnt have sold your SV650 for well, you know....A FUCKING SCOOTER.

[KooK]

I doubt the carb could take the mixture and it would probably eat up the diaphragms and possibly some of the metal. Just stick with 100-110 if you want more octane, however if it's rated to use 91 or 87, you're not going to get more power out of the thing without modification.

[Taras]

I would suggest that if you were looking for more power you shouldnt have sold your SV650 for well, you know....A FUCKING SCOOTER.

Get the fuck out of my thread. I sold it because i like scooters more than bikes thats it and i like miatas not huge trucks. You have nothing valuable to say so stay out of this.



back to the topic. I was planning to rejet it for sure i would not even run it without putting a much bigger get. I would just actually drill out a stock jet i have untill the plugs look good. What i am worried about are the rubber pieces that are in the carb and because its oil injected i think i would need to add more oil as a premix. I think this would be way too much work.

On the other, but related note, i just switched my miata to e85 and i am supper happy with it. Runs amazingly smooth and EGTs are like 200-300 degrees lower.

[Straitup D]

lol u mad?

[Taras]

Not really just hate Mnsubaru rednecks.

[LSVTEC-T]

Drilling out the jets is not the way to go... are you a machinist or something? Either way... buy the jets so you know what youre doing.

[AWDimprezaL]

Not really just hate Mnsubaru rednecks.

I'm anything but a redneck, but thanks, and I hate trucks as much as the next guy thus my reason for not owning one. I live in hickville, it doesnt make me one.



Back on topic. E85 doesnt mix with oil very well, expecially synthetic oil. Do a little experiment yourself, mix a little bit of e85 and some 2 stroke oil, it reacts almost like oil and water.

[mesoungodlyfast]

back to the topic. I was planning to rejet it for sure i would not even run it without putting a much bigger get. I would just actually drill out a stock jet i have untill the plugs look good. What i am worried about are the rubber pieces that are in the carb and because its oil injected i think i would need to add more oil as a premix. I think this would be way too much work.

.

You have to increase the oil jetting when you increase the fuel jets, since one of the purposes of the oil injection is cooling of the cylinders.

[AWDimprezaL]

You have to increase the oil jetting when you increase the fuel jets, since one of the purposes of the oil injection is cooling of the cylinders.

No, on a two stroke the purpose of oil is to lubricate everything, including the crank (or mostly) as it doesnt have an oil-pan, or oil pump.. On snowmobiles Ive never had to increase oil injection relative to fuel, and most oil injected two strokes dont have different sized injectors to choose from.

[Taras]

Drilling out the jets is not the way to go... are you a machinist or something? Either way... buy the jets so you know what youre doing.

i have done it on my heavily modded Zuma before, after i got tired of buying jets. I bought 5 different jets add all of the were way too small. At a motorcycle shop i was told to just drill the jets out with a very small drill or file. I got tiny drills at a hobbie store and it worked like a charm. Ran great!

Back on topic. E85 doesnt mix with oil very well, expecially synthetic oil. Do a little experiment yourself, mix a little bit of e85 and some 2 stroke oil, it reacts almost like oil and water.

Thats what i was thinking. I did read that it does not mix very well with oil so that would a problem. However i have read on a European forum someone running castor based oil with e85 and it mixes much better.

[Ol' Dirty Bakeoff]

Are you going for more power, mileage, or something else?

Honestly, you seem like a guy that just has to fuck with something all the time. Sit back and enjoy something for once. You don't always have to be tinkering. If it ain't broke....

[xveganxcowboyx]

What is your goal in switching?

Drilling jets can work ok depending on the type of carbs. A lot of people do that with the Hitachi carbs on my bike since there is not a good selection of jets available. Depending on the type of carbs and their jets you may not get proper fueling in the whole range. You should research how much extra fuel you can get out of the stock needle. If you end up drilling I would think you would want to be a little more scientific about it than just drilling until the plugs look good. I would compare the stock diameter/flow to whatever increase you want and find out the diameter needed. Remember you will have to match Idle and Main jets, etc.

[Taras]

Are you going for more power, mileage, or something else?

Honestly, you seem like a guy that just has to fuck with something all the time. Sit back and enjoy something for once. You don't always have to be tinkering. If it ain't broke....

Thats true i do like to tinker with stuff, thats just what i do, i learn by tinkering with things. Cars, bikes, scooter, computers i take them all apart just to see how stuff works and how i can make it better or different. And i have too much free time...I need a job that is...

What is your goal in switching?

Drilling jets can work ok depending on the type of carbs. A lot of people do that with the Hitachi carbs on my bike since there is not a good selection of jets available. Depending on the type of carbs and their jets you may not get proper fueling in the whole range. You should research how much extra fuel you can get out of the stock needle. If you end up drilling I would think you would want to be a little more scientific about it than just drilling until the plugs look good. I would compare the stock diameter/flow to whatever increase you want and find out the diameter needed. Remember you will have to match Idle and Main jets, etc.

Yeah i know that it would help to be more scientific but i am not building a space ship and i am doing this for myself so even if its not perfect but runs good I am happy with it. It worked on my zuma when i simply drilled out the jet and kept the stock needle.

[xveganxcowboyx]

Yeah i know that it would help to be more scientific but i am not building a space ship and i am doing this for myself so even if its not perfect but runs good I am happy with it. It worked on my zuma when i simply drilled out the jet and kept the stock needle.

Yes, but the amount of fuel needed for this change is a large. The needle is responsible for mid-range throttle IE: Almost all of your driving. Running 30% lean for most of your driving could be disastrous. I don't know much about carb tuning, but I do know that even simple intake and exhaust changes can easily kill power. Not tuning appropriately for such a large change could not only hurt power, but could damage the engine. This is all of course only in reference to the jetting. I don't know anything about E85 in a 2-stroke, but I would consider it an extra complicating factor, which means you should work to limit other complications such as poor jetting. Small problem + small problem can = big problem.

[Taras]

Like I said before, if I decide to try this. I would absolutly get a much bigger get and then see if it even runs. The problem is that 2 stroke engines use oil with gas to lubricate everything so if e85 does not mix well with oil the engine will not last too long.

[xveganxcowboyx]

Like I said before, if I decide to try this. I would absolutly get a much bigger get and then see if it even runs. The problem is that 2 stroke engines use oil with gas to lubricate everything so if e85 does not mix well with oil the engine will not last too long.

Like I said, just be sure to deal with all jets and the needle. Sometimes people just replace/drill the main jet which only effects WOT, but not idle and mid throttle positions. I just want to be sure you address all necessary jetting, not just one part and then run too lean during most driving.

Hopefully someone else knows more about the mixing issue. Perhaps you can pre-mix with a third agent to help the oil and alcohol integrate.

[R20S04X_S]

Taras miata is ssiiiccckkkkk

[Taras]

thanks! it is even better with e85

[Ol' Dirty Bakeoff]

Thats true i do like to tinker with stuff, thats just what i do, i learn by tinkering with things. Cars, bikes, scooter, computers i take them all apart just to see how stuff works and how i can make it better or different. And i have too much free time...I need a job that is...



Yeah i know that it would help to be more scientific but i am not building a space ship and i am doing this for myself so even if its not perfect but runs good I am happy with it. It worked on my zuma when i simply drilled out the jet and kept the stock needle.

I understand tinkering. Shit, I do it all the time. But this is a project that I just don't see a point in doing. Rebuild the motor? Sure. Convert it to a different fuel not knowing if you can get it running reliably when it already runs great? That just sounds stupid. Its a scooter. Don't reinvent the wheel on this one. Plus, E85 sucks on NA motors.