All I put in was the '03 pump assembly and a home made baffle. I also used the harness from the 99 pump because the connector to another component on top of the pump is different and the harness with the pump won't plug in to that component. The main connector at the rear of the fuel tank is same 99 and 03, however.
To use the 99 tank, I had to remove all of the old pump support bucket. On the 99, the pump is supported by the plastic bucket in the tank. In the 03, the pump hangs from the top flange. But the 03 pump (two pumps) is too big to fit in the 99 bucket. Without the bucket, there is no baffle at all near the pump, so the pump might starve on launch with a 1/4 tank of gas, unless a baffle is added.
I broke out the old plastic bucket with some diagonal cutters and Channel-Lock pliers. I left the metal piece spot welded to the tank in the tank.
Sean Hyland recommends using the 03 Cobra Fuel Pump Driver Module (FPDM), an electrical component mounted in the trunk. The Ford house claims the '03 Cobra module (FPDM) is identical to the ones in our cars. I didn't change it because I can't justify it.
Here are some pictures.
99 cobra pump in tank
99 and 03 pumps side by
side
filler tube after tank
removal
99 Cobra tank pump
support before removal
99 Cobra tank pump
support after removal
Next up for the pump installation is to install a home made baffle around the rear of the pump to allow me to run it with 1/4 tank of gas without it going dry.
The pump alone doesn't solve all the problems for a nitrous car. For Nitrous wet kit use, I
Link to the nitrous kit install page
NX kit installation page
I know these pages are crude. I will fix them when I finish solving the problem.
Feb 5, 2003--Adding a Baffle to the 99 Tank for an '03 Pump
I have been scared to run with less than 3/8 tank of fuel for fear that the pump will run dry on launch. I never experienced any problems, but I knew I would since the pump is a little forward of the middle of the tank. Today I finally designed and installed a crude baffle suitable for drag strip only.
I did this by cutting up a 1 gal polypropylene gas tank, using a pocket knife. Here is a picture of an uncut tank and the final piece cut to fit around the '03 pump.
Here is a close up of the section of the tank. The 1/4" holes in the front part are for anchoring it in the tank to the old 99 pump bucket.
Here is what the tank looks like with the baffle wired into place. The top of the picture is the rear of the tank. The tank is sloped up some beginning about an inch in front of the rear part of the baffle. The baffle must be trimmed by hand to minimize the gap with the floor of the tank.
Later, I added a bike spoke spring to hold the baffle down against the bottom of the tank. Not sure if it is needed or not. This baffle works great, as I have run with as little as 1/8 tank of gas with no problems. There is no need to buy the '03 tank if you want to make your own baffle. The baffle here is for drag racing only, not road racing. I don't know what I would build for a road race application.
Note that this pump and baffle assembly were installed in 2002 and worked fine through 2003, culminating in a 10.77 pass at 127.8 mph at San Antonio Raceway on 12/19/03 on a 150 shot. I will be running a 200 shot in 2004 with the same setup.
Joe Lynch
Midland, TX
915-553-6205 cell
