Fuel Pump Restoration

[James C.]

[Joe R.]

Re: Fuel Pump Restoration

James,

There are several styles of C-2 pumps. The pumps with the screws holding the diaphragms in place can be rebuilt with relative ease. Places like NAPA and O'Rileys stock the rebuild kits.

JR

[Ed S.]

Re: Fuel Pump Restoration

Jim,

I just sent you an e mail with a word document attachment - an article on "how to" rebuild C1 - C2 fuel pumps, hope it helps.

[John D.]

Re: Fuel Pump Restoration

Jim, Make sure your rebuilt kit is for ethanol. Jackson's Old Time Parts. They have a website.
I don't know if Joe Rays advise is for kits for ethanol. Are they Joe? John

[Frank D.]

Re: Fuel Pump Restoration

Some more info on the topic...its for a 61 but the pumps with the screws are basically all the same...

[Richard G.]

Re: Fuel Pump Restoration

The fuel pump diaphragm spring sets the fuel pressure.
There have been reports of replacement having incorrect spring compression strength resulting in high fuel pressures at the carburetor.
I would confirm the spring in the rebuild kit is close to the same length and wire size as the original.
If your old one looks good I would consider re-using it and installing the rubber parts from the kit just to be sure.

If you really want to confirm the pressure correct hook up a gauge at the output and stroke the pump by hand. This can be done with the pump held in a vise while stroking the lever with a hammer handle. The pump can be dead-headed it will not hurt anything. A fuel pressure gauge with the extra port to dump the fuel pressure after testing works great.

Because there is no good way to connect the gauge testing the fuel pressure with the car running is a pain.
Here is how I do it:
1) Start the car and warm it up for a minute or so.
2) Disconnect the line to the carburetor and adapt it to the gauge.
3) Start the car, it will run for a short time on the fuel in the carburetor.
4) Pressure can be read even if the car will not start just by turning the motor over on the starter.

I have little confidence in the current aftermarket parts. Too many of them are made overseas with no quality control.
I test everything I can to eliminate the variables.


What year Corvette you are working on? I am assuming pre-electronic fuel injection and it is early enough to have the pump that is not crimped together.

Rick

[Brian M.]

Re: Fuel Pump Restoration

Jim,
See the July-August Carolinas Chapter Redline Times newsletter for an article complete with photos.
Brian

[Ed S.]

Re: Fuel Pump Restoration

Jim,
See the July-August Carolinas Chapter Redline Times newsletter for an article complete with photos.
Brian

Brian, if you are referring to the July- August 2018 issue of the Redline Times it is not yet posted to the chapter website. Latest version posted is January 2018. If possible, can you attach a PDF of the issue or just the fuel pump article?

[Brian M.]

Re: Fuel Pump Restoration

Jim,
PM me your email address.
Brian