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Farmall & IHC Tractors Discussion Forum
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Re: E85 farmall s love it period!

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Tom Fleming

01-26-2013 17:10:38
67.20.233.75



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John, on the older diaphrams, ie. 40's, 50's, and 60's, the rubber compounds were not designed for ethanol. Newer stuff, absolutely no problem. Older stuff turns to jelly. I'll make you a deal. I have 2 NOS F12/F14 fuel pumps on the shelf. I'll send one to you free of charge. Install it on your F-12 and put E85 in it. Tell me how that works out for you.

New stuff, fine. Pre 1990's, crap shoot. Look up solvents for butyl rubber, vs neoprene, vs silcone, etc. to be absolutely fair to your challenge, I should have qualified my statement for older, pre 1990 carb gaskets and fuel pump diaphrams.

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John G. Hasler

01-26-2013 18:44:34
174.124.25.60



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 Re: E85 farmall s love it period! in reply to Tom Fleming, 01-26-2013 17:10:38  
> Look up solvents for butyl rubber, vs neoprene, vs silcone

Gasoline attacks butyl rubber (developed in 1937) as well as natural rubber. Thus neither would have been used in a gasoline fuel system. Neither gasoline nor ethanol attack neoprene (developed in 1930). I"m fairly sure that before neoprene became available gasoline fuel systems were metal and glass with possibly some paper gaskets.

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John G. Hasler

01-26-2013 18:43:18
174.124.25.60



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 Re: E85 farmall s love it period! in reply to Tom Fleming, 01-26-2013 17:10:38  
> Look up solvents for butyl rubber, vs neoprene, vs silcone

Gasoline attacks butyl rubber (developed in 1937) as well as natural rubber. Thus neither would have been used in a gasoline fuel system. Neither gasoline nor ethanol attack neoprene (developed in 1930). I"m fairly sure that before neoprene became available gasoline fuel systems were metal and glass with possibly some paper gaskets.

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