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6 volt electric fuel pump

N

notjustair

Well-known Member
I'm having a terrible time getting a correct mechanical fuel pump for my 35 Chevy 1 1/2 ton. The later ones bolt up and work but not for long. I think the throw on the cam is too long and stresses the diaphragm too much. They also have too long of a flange and cause a pretty good oil leak.

I've decided to put an electric fuel pump in it. It is six volt. Does anyone have a part number for a good one I could give Napa? I'd rather avoid diaphragm pumps if I could and need it to be low volume. I hesitate to go electric, but I did buy a high quality rotary one for the chore pickup and it has been trouble free for many years. It wasn't cheap but it has been well worth its money. That's what I am looking for.
 
If you were to whittle out an aluminum adapter plate, would that cover the oil leak and space the pump out some, lessening the angle of the arm deflection?

I could machine it for you with a drawing.

Just an idea...
 
I am thinking that you are using the wrong pump. First, it is unlikely to have too long of a stroke. As things wear, the stroke gets SHORTER. That is my first clue. Next, you say that the replacement pump causes an oil leak because it does not match up with the flange on the engine. Hmmmmmmm. These two items tell me that your problem is the WRONG PUMP. As such, might it be simpler to get the correct fuel pump? After all, you are looking for a needle in a haystack. Finding a 6 volt positive ground electric pump is simply not going to be easy. Finding the CORRECT fuel pump may be more easily accomplished.
 
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