Thread: 100 Mpg

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My "bitter half" says she heard a report on the radio this wekend about some dude that is running a gasoline/water mix in his engine and getting 100 MPG. I told her that was BS.

Am I wrong?

Ps...what about this? http://www.motherearthnews.com/Green...-Wizardry.aspx

Yea no problem, I'm doing the same on straight gasoline no mix. Now who's laughing!!!

Sean

the fiesta was already an efficient platform to build on. as i recall those things got like 35mpg around town, and that is running a compression ratio of around 9:1. this guy has pumped his compression ratio up to 12:1, and then credits the water injection for improving fuel economy. well i can tell you it isnt the water injection, but the higher compression ratio is where the added fuel efficiency if coming from. the water injection allows him to run the higher compression ratio.

he also stated in the article that water injection was used to get more thrust from WW ll engines, that is not quite true. again the water injection allowed the use of higher boost pressures because it prevented detonation, thus allowing more boost so the engine could make more power.

this is a systems approach here, and everything needs to work together.

by the way, even modern jet engines use water injection, but turbines can use it for more thrust since they operate on volume. the harrier uses water injection to cool the engine in the hover mode to prevent overheating, and even then you get 90 seconds.

Originally Posted by GulfCoastGasser

My "bitter half" says she heard a report on the radio this wekend about some dude that is running a gasoline/water mix in his engine and getting 100 MPG. I told her that was BS.

Am I wrong?

Ps...what about this? http://www.motherearthnews.com/Green...-Wizardry.aspx

I would say that is a bunch of bull cookies. As to water injection, it has been around for a very long time. But claims of 20-50% increase in mileage are a tad optimistic I believe. What it will do is effectively raise the octane equiv of the mixture as an aid in preventing preignition. Also very good cooling mixtures for blow thru applications. It might improve mileage 2-5% on avaerage I believe.

Kitz

Back in '83-'84 my mom had an International 1010 Travelall. She had a place in Mexico she liked to spend time at. Mexican gas back then was bad (not sure if it's better today) and the truck ran very poorly on it (knocked & pinged). The answer was water injection. Turn the system on when using bad gas, turn it off when using good gas from the states. Not once did I hear her say it helped the mileage. It did act like an octane boost and let her run crappy gas....