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Fuel Pump information Home site for old auto "Then and Now

It's easy to tell a 1920's to 1950's Fuel  pump diaphragm from the new ones- back then the only material which could stand up to gas and still flex without stretching was 3 or so layers of tar-coated canvas.   Picture attached Today's gas takes that tar right off, in our test 1952 stored till 2008  About a gallon's worth! Using a make shift rubber from an innertube ran for 1 day...for it's madden tour on June 2 ,2008 before returning to a leaky mess. Best solution 12 Volt fuel pump run on 6 Volts with a power up converter.  (future project) Buna-N Nitrile rubber is the industry standard for a fuel diaphragm. 2008. Today,  we run on Nylon re-inforced "Neo-prene", purchased by part sheet at Industrial Rubber inc. Winnipeg Listed  as 'good" for gas but NOT excellent  Buna- N Nitrile was avaiable in winnipeg but not re-enforced for use as a moving diaphragm. Never mind running, you don't want lines, fuel pumps and carb's to leak (at all) in an attached garage. the fuel line system is vital and needs to be re-worked, item by item.