My 37 is the inline 6. I have an electric pump on it that works fine and I have a mechanical rebuilt pump that I wanted to put on. Question is should I put a switch inline to use the electric as a primer or emergency pump or can I put the mechanical on and would it be able to operate the vacuum wipers without a direct fuel line? As you can guess I currently do not have wipers, that's how I figured out the mechanical pump on the car was not hooked up, it was bypassed. I didn't know if the vacuum for the wipers is created from the liquid fuel or just the action of the pump arm or if I will roach the pump without fuel to cool it? Any advice would be great.

 

I'm not sure about a 37 but on later models the vacuum is created by a diaphragm on top of the fuel pump and should not have any effect on fuel delivery. It's there for the wiper motor only.

As far as needing a source for a primer if it didn't have one when new it shouldn't need one now....Tedd

 

[QUOTE=Tedd Thompson
As far as needing a source for a primer if it didn't have one when new it shouldn't need one now....Tedd[/QUOTE]

True.......but then again the electric primer does not hurt. A discreet installation can be barely noticeable, and can make for faster fuel delivery on an already lethargic 6 volt start. (ie: less cranking/low speed oil circulation) Use judgement that best suites your driving tendencies.

 

And you could run the output of the electric pump through the mechanical pump and pretend it is cooling it...and on to the carb.