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Old 12-02-2019, 07:57 AM   #1
Mike/NY
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Join Date: May 2010
Posts: 57
Default Rebuilding a 1939 fuel pump

When swapping a new membrane in a 1939 fuel pump does it require to be pretensioned before tightening the screws? This is what is done eg. to a Volkswagen pump so the membrane is not distorted and pump works better. I believe it is not necessary to do so in an early Ford V8 pump. My membrane in a nos pump was completely melted due to modern fuel.

I plan to use an Antique Auto Parts Cellar membrane but the owner Tom wants ot know which membrane, does ayone have a part number for him?
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