Mounting the Fuel Filter and External EFI Fuel Pump

[carlewms]

I am installing the EZ EFI 2.0 system on my Mk 4 using the external fuel pump. According to the installation instructions the pump should be located below the tank.

I am looking for ideas and photos of those that have gone this route before ...

Thanks in advance for any help.

Carl

[Olli]

I installed the EZ EFI 1.0 on my HR a few weeks ago and will be installing the 2.0 on my Mark IV. FYI, the 1.0 system is absolutely fantastic. For the Mark IV I went with an in-tank fuel pump using a Fox fuel pump hanger. The pump is a Walbro 255. You do not have to use the FAST in-tank pump. Later I will dig up a few pictures of where I mounted the filter.

I don't understand why you would not go the in-tank route?

Olli

[carlewms]

Olli,

Thanks and good question. The engine builder Gordon Levy recommended that route. Carl.

[Olli]

In this picture you can see the filter. ( It is just mock mounted and the filter needs to be flipped for the correct orientation.) Yes, I have since flipped it.

http://i34.photobucket.com/albums/d101/ollijo/MarkIVspring13002_zps4c4b877b.jpg

If I were you I would go in-tank. Use the Fox fuel pump hanger and the pump of your choice (I might change from the Walbro 255 to an Aeromotive 340), use the fuel pump harness, regulator and filter that FAST supplied. Breeze has the pump hanger and the fittings that will adapt the inlet/outlets to -6AN. The only thing that you won't use from the FAST in-line fuel kit will be the pump.

Olli

[snakebit31]

Carl,
I just installed the FAST EZ EFI on my coupe, and so far, really like it. I already had the Aeromotive A1000 fuel pump and regulator installed with the carb, so all I had to replace was the regulator with an EFI regulator.
In the photo you can see the pump mounted below the fuel cell. I used the frame I built to mount the pump. It looks low, but it is actually above the differential.
This week, I replace the fuel cell with the stock mustang tank(another issue), and mounted the pump to the diagonal brace for the 3 link suspension,. visible in the photo, behind the pump. It is a more solid mount, and places the pump at or near the bottom of the tank.

http://img.photobucket.com/albums/v451/snakebit31/coupe%20photos/FuelPump46.jpg (http://smg.photobucket.com/user/snakebit31/media/coupe%20photos/FuelPump46.jpg.html)

Rob

[carlewms]

Thanks for the inputs.

When the system arrived today, it was the first generation system.

After speaking with the EZ EFI folks I decided to upgrade and go with the in tank system and the EZ EFI 2.0 system which according to Dave will not require a return line.

Thanks for the photos supplied because they help understand the different ways to route the fuel lines.

Carl

[carlewms]

Has anyone installed the new system without a return line? I am trying to source out the fuel tank sending or pickup that I need to put in the tank. All I can find at the usual sites and cannot seem to find the part. Breeze does have a unit but it includes the return line which I suppose I could simply cap off.

Any Ideas?

[Bob Cowan]

Ideally, the pump should be mounted below the tank. But, like most cars, that's really impossible to do safely. Look at pretty much every factory built car on the road today - the pump is in the middle of the tank.

I mounted my electric pump to the X brace behind the IRS pumpkin. It's been there for about 12 years without a problem. It's a solid mount, fairly easy to get to, and well protected.

Rob, unless you're building a show car, I would not mount the pump that way. First, it's so close to the ground, the odds of damage are pretty high. Second, only mounting to one side like that is pretty much a guaranty that vibration will cause those two tabs to break and the pump will fall to ground. I would move it to the front of the tank and use all 4 mounting tabs. I know you went back to a stock tank, so maybe you already addresses those issues.

[snakebit31]

Thanks for the input Bob. Yes, after mounting the stock tank, I did mount the pump at all four corners on a 1/4" steel plate. That plate was then mounted to the diagonal brace behind the differential. It sounds like the same brace as yours. The pump is above the bottom of the tank, behind the differential.

Rob

[carlewms]

My 2.0 version of the FAST EZ EFI arrived last week ... Finally.

I decided to go with the in tank pump after all the forum advice and the instructions make it clear this is the best option.

Having purchased the kit including all the lines I am now considering whether just to use those rubber lines instead of hard tube with flexible lines at each end. Here are my questions:

1. I cannot see ant documentation that says these lines are acceptable for use with 15% ethanol fuel. Does anyone have any documentation on these lines? I do not want to face another fuel line change in a few years;

2. How were the lines run on the original cars? It does seem the safest place is up the PS just outside the 4in tube (I ran the brake lines down that location on the DS;

3. It appears that the originals had rubber hose fitted to the carbs from the engine compartment photos I have seen. Was rubber run all the way back to the tank or was this hose just connected to a fixed hard tube somewhere else in the compartment?

4. For those of you that have the 2.0 system, it appears that a returnless system could be used. Apparently the system varies the speed of the pump to keep the appropriate pressures. Has anyone used the system in a returnless mode on a 425-450 bhp engine? If so how does it work out?