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Allow me to weigh in here with a question.
When I was rebuilding my 1935 21 stud 85HP a few years back... I read that there were three components that I needed to upgrade so that I could use either Ethanol or pure gasoline. I made these upgrades as follows:
[The parts I replaced with ethanol resistant ones were]
#1 - the flexible hose that connects the metal fuel line to the mechanical fuel pump,
#2 - the mechanical fuel pump diaphragm,
#3 - my Holley Model 94 carburetor accelerator pump.
Even with these upgrades I have used nothing but pure gasoline... so here is my question. Are my upgrades sufficient for the use of ethanol and pros and cons of ethanol use over pure?
Thanks all!