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E85 farmall

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Ejtodd

New User
I am curious if anyone has built an E85 farmall. I'm talking higher compression and high flow carb. I would like to do it in the future. Just seams like a fun way to make a hot 300 or 400.
 

I have ran my 1940 H and 1940 M on straight E85 with no modifications. They both ran good, but did require a longer warm up time before going to full throttle and full load.

If you get a chance, attend an antique tractor pull and take a whiff of the exhaust from some of those tractors. Yes, that is E85 you are smelling.
 
My cousin is a VP in AAM and has his aunt's 55 Chev sit up on E85 to promote ethanol. He had to put a hand choke on it.
 
Ran my DC Case on E-85 just to see what would happen, seemed to run good but I was plowing with it.
 
No, you'll loose some power and it will consume more fuel.

That's why it costs a little less. Not as much energy in ethanol as in gasoline.
 
What kind of compression are you thinking? The most power is made with the lowest octane fuel your tractor will run on without pre-ignition.
 
Because ethanol has less btu's per gallon than gasoline you need a much higher compression ratio, and have to use a lot more fuel to makeup for the loss of btu's. A gallon of E85 will result in power loss by 1/3 compared to regular gasoline (and for winter they add more gas to the E85). I've raced cars on alcohol, and E85 for many years now. So just dumping E85 into your tractor without any modifications you are just making less power unless your tractor is already running too rich on gasoline.
 
Yet, all the top tiers of racing run engines on alcohol. Formula One, NHRA Top Fuel and Funny Car, etc.. Plus it's methanol, which has even LESS BTU's per gallon than ethanol, and only roughly half the BTUs of gasoline.
 

I was thinking like 12:1 been doing some reading. The real question would be what is the lowest ratio the fuel would be. I think I'll contact an old ISU professor
 

Just my opinion. We own a 2012 Silverado. It is labled to use E85 if we wish to do so, and we have tried it, but the miles per gallon is reduced compared to the E10 that we normally run. Now for the opinion part. Any engine that will run on either type of fuel is a compromise of power and fuel efficiency. If the engine was built with higher compression and greater spark advance, then the E85 would be used to its full potential, but that engine would run very poorly on E10 or ethanol free fuel.
 
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