Fuel pump adjustment- possible?

Tom in TN

Tom in TN

Senior Member
Hey y'all, I have a stock, glass bowl fuel pump on my '34 motor.
The outlet is exiting right against the carb body (running 2 dueces on a Fenton intake) so..my question:
Can I remove the screws that hold the pump together and rotate the top section CCW one screw hole and reinstall the screws to put it back together,,,and the pump still work properly?
Is this possible?
 
Tom in TN said:
Hey y'all, I have a stock, glass bowl fuel pump on my '34 motor.
The outlet is exiting right against the carb body (running 2 dueces on a Fenton intake) so..my question:
Can I remove the screws that hold the pump together and rotate the top section CCW one screw hole and reinstall the screws to put it back together,,,and the pump still work properly?
Is this possible?
Click to expand...

Yes, think this process is called "clocking", and in fact, you can move it more than one hole and the pump won't care within reason!! Good luck!!
 
Just make sure the diaphragm stays with the body and only the lid rotates.

Mart.
 
Bought a new Drake fuel pump and the inlet and outlet didn’t line up. I took top off and moved it one bolt hole to fix. Too bad it put out more than 5 psi.
 
I am no expert, but I seem to remember a procedure from the Ford Service Bulletins to depress the actuator arm partway before tightening the cover screws to prevent installing the diaphragm in a stretched condition. I am away from home right now and can’t confirm the exact procedure.
 
Stock or non-stock. Who cares?! The guy just wanted some advice on his fuel pump. You guys have taken "ridiculousness" to a whole new level.
 
47topless said:
Stock or non-stock. Who cares?! The guy just wanted some advice on his fuel pump. You guys have taken "ridiculousness" to a whole new level.
Click to expand...

I believe the reason this Forum is so popular is that it provides a wealth of knowledge in answers to questions that haven’t been asked.
 
marko39 I could be wrong, but the tension of the spring in the pump is what generates the output pressure. If your old is still available, swap the spring from it to the new pump.
 
51woodie said:
marko39 I could be wrong, but the tension of the spring in the pump is what generates the output pressure. If your old is still available, swap the spring from it to the new pump.
Click to expand...
i shall try this as i have several old pumps but dont know if they are the same as the china Drake pump.
 
Kind of same topic here, has anyone ever tried shortening the pressure spring to lower the psi in their fuel pump? I've tried it on my 36 dodge and it worked there. I just don't like the idea of a pressure regulator. Tim
 
51woodie said:
marko39 I could be wrong, but the tension of the spring in the pump is what generates the output pressure. If your old is still available, swap the spring from it to the new pump.
Click to expand...

You are not wrong. I took apart the new pump(5psi) and an old one. The springs are the same height and thickness but the new one was stiffer. Installed the old spring in the new pump and now have a usable pump. If you’ve never taken one apart ( like me) it can be a little tricky.
 
marko39 said:
You are not wrong. I took apart the new pump(5psi) and an old one. The springs are the same height and thickness but the new one was stiffer. Installed the old spring in the new pump and now have a usable pump. If you’ve never taken one apart ( like me) it can be a little tricky.
Click to expand...


This is all good info, but I'd say that a fuel pump disassembly/rebuild would be about the simplest task of any to be undertaken, save perhaps an oil change.
 
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