255 fuel pump install

[turbo2256b]

Dont remember all of this its been a while. Have some pics that might help. Starting with the tank on the floor.
Large bung is were the pump is small one at the top of the tank is a vent think it runs forward to the carbon canister when hooked up

[turbo2256b]

Disconecting the hoses. The same clips as used on the fuel filter are removed. Might want to pick up some new ones for renstalling the connectors.

[turbo2256b]

After removing the fuel lines and electrical connector the lock ring has to be removed. A punch of some sort and a hammer is needed. Some say to use a brass one to prevent any sparks. I never have used a brass one that I can remember. Your call. A new rubber gasket might be needed dont remember if the pump came with one. If it did it might have been the wrong size might be thinking of something else I worked on.

[miamibob]

What year/model of car is this for?

[turbo2256b]

Here is pics of the original pump assembly and the 255 pump about ready to install.



Original


255

[turbo2256b]

The band clamp holding the boot to the pump and bracket will have to be cut off to remove the pump.

[1980c10]

Looks like 86-89 car.

[turbo2256b]

The 255 pump has a differend diameter body. Using a section of rubber hose fit just about perfect. Sorry dont remember the size.

[turbo2256b]

Another issue is the 255 pump is shorter. Without doing the next mod the pump could be installed I believe. Without it though a few gallons give or take would be lost because the pump would be sitting too high in the tank to pick it up.

Started by cutting the hole in the bottom of the boot so the pump could be inserted to a lower position.

In step 5 post one should measure the distance from the rim of the bracket the boot fits on to the bottom of the filter.
It will be needed to install the pump to the factorys orignal depth.

[turbo2256b]

Install the pump in the boot attach the filter (it might have to be purchased seperately). osition the filter in the same orentation as the factory one as shown in post 5. Then adjust the pumps depth using the measure ment from the bracket rim to the bottom of the filter. Two band clamps will be needed one to hold the pump to the boot and one to hold the boot to the bracket. Because the pump is shorter a longer hose will be needed to connect to the outlet tube. It should be attached to the pump before installing in the boot.





The original filter wount fit the new pump the proper one is now what is used on a Mustang

[turbo2256b]

Lastly is the electrical connections they are different. The FMS pump had the connector with it and some wire splicers. Possibly why the kit cost a bit more from them over the same pump from others that market it in there name. Splice the new connector and connect to the pump.
Then attach the fuel supply hose to the tube.


Orginal


255

[turbo2256b]

Reverse pump removal procedure to install pump.





Pic of pump installed as seen through the fuel filler opening

[packman]

Nice!!! I'm in the process of purchasing the fuel pump hanger assembly and an Accel 190 lph fuel pump for a Mustang. I have the original pump that went bad a couple years ago for the CV and use that for fitment purposes. I was going to compare the two pumps relative to the hanger and make the necessary adjustments. This makes it a helluva lot easier.



Packman

[1980c10]

mustang pumps are direct bolt in on 90-91 cars btw guys

[packman]

Okay, I am working on this project over the winter. I am going to do this a little differently. Because the Mustang pump is shorter and smaller, I am going to use something else to fill in the space. I found a radiator hose that was bought from NAPA ages ago for an '80s Chrysler Cordoba with a 318 (I didn't know they still made those in the '80s). I am going to cut the straight sections off and fit them in the boot cavity as it fits snuggly in there. The fuel pump fits snuggly in the radiator hose. I will see how much cramming I have to do to get them to all fit together. It looks like I will be cutting the nipple off of the boot to extend the boot insert (radiator hose). Hopefully this works. I might even cram the insert up to the nipple and then cut where you (turbo) cut and extend it that way. I will get the NAPA part# tomorrow.


Packman