Fuel pump for a fuel injected 306 maverick???

Fuel pump for a fuel injected 306 maverick???

What kind of fuel pump can I use with the stock 69 maverick gas tank that will be big enough to support a very mildly built fuel injected 306??? Is there an in-tank pump I can use, or do I have to go in-line???

The car is a rebuilt .030 over late model 5.0 motor with an e cam, 70 mm throttle body, e7TE heads, aftermarket exhaust, and eventually a cobra intake or something similar. I'm thinking a 155lph should do sufficient with a fuel pressure regulator installed. Do you guys know of any tech articles for this??? Thanks.

 

I built my own pump for my efi maverick. I did not have to cut the tank to put in a pump, just run a return line and I was done! I had built a steel canister, with a sealed cap at the top so I can remove it incase it ever went bad,,,,,, I used a stock ford pump,, dropped into the canister, added a little fuel pump to fill the canister and the big pump supplied the efi. It dont take much of a canister to do this,,, I used an old engine sleeve, welded a grease cap on the botom to seal it up, took a piston from that sleeve, put in orings where the rings would be, put in 3 lines to hook up, one from the tank one for a return, and one to go to the rail. Mounted it anywhere i wanted. I cant afford the big dollar aftermarket pumps, so I had to improvise. ChadS

 

I have used a 79 Nissan 280z pump fairly inexpensive and not loud.

 

There is no in-tank pump that you can just drop in. I used a rail-mounted pump for mine. It is a Ford pump from an '85 Lincoln Mark VII. These were the ones that used central fuel injection as opposed to the modern multi-port version. I don't have the part number handy but if you're interested it can be looked up by application. As ChadS said, you'll have to plumb a return line as well.

 

If it was me, I'd look at 2 different ways of doing it.

First way is to use 2 electric pumps. One small one that pulls from the stock outlet on the tank and feeds a rail mounted high pressure pump. Rail pumps can be bought cheap...stock oem replacement for '86-'88 F150 pickups. They work fine and should support around 350 HP give or take a few...if used with the low pressure pump feeding it. Early SVO's used that style....except the low press pump was in the tank & the HP pump was on the frame. Those little tiny pumps would feed +300 HP and are highly reguarded as the best setup on the SVO's (stock that is). Later ones used a single HP in-tank pump.

OR you could go with a single pump and hope that it will pull fuel from the tank. Most don't pull very well, though..they push fuel fine but they don't pull that great especially if the fuel level in the tank is low.

OR you could take the tank out & graft in a late model mustang in-tank pump, which may require cutting part of a JY tank up to use the ring & hanger, then weld that part into the Maverick tank. I don't like the idea of welding on a fuel tank though....Just my personal preference. Sounds like too much work.

I would use the 2 pump setup. Worked great on many cars over the years and it should work just fine for what you're doing. If you want to upgrade later on, you can use an A1000 pump or something in place of the Ford Truck pump which will support plenty of HP.

 

89gt
What i did for a pump on my EFI convertion was a rail mount pump from a F150 mounted in front of fuel tank on pickup side as low possable to gravity feed the pump with as short as possable fuel line . My pump is mounted almost at the bottom of fuel tank

jay

 

so wait... I am very new to mavericks... in fact these questions I'm asking are not even for my car, but for my friend's... So I have to install a return line. GREAT!!! this is going to be more work than I thought... OK, should I just run the return line right next to the existing line as to keep it from damage??? Should I use rubber for the lines???

 

Yep, you gotta run the return line from the fuel rail back tothe tank. 50psi rubber line works fine for this,, You can zip tie it underneath anywhere you want. probably take ya 15 minutes to route it and tie it in. You can drill a small hole into the filler spout and put a fitting there and hook it right up. What do you have planned for the EFI harness??? There are two EFI setups to choose from,,, Speed density which is 86-88 5.0, and 89 to I think 93 which is Mass air. Depending on how hopped up the motor is, the Mass can run the higher hp engines, and the speed density will run close to stock engines. Either look for a custom wiring harness, painless wiring has kits, or find a fella that has built his own harness and talk em into building you one too! I built my own harness,, so,,, if you need some help, you came to the right forum! Chad

 

89gt

I ran all new steel fuel lines down the right side of the car . A 3/8" line for fuel delivery and 5/16 line for fuel return . The return line has a double flair fitting soldered in the upper right corner of the tank . The reason for the all new lines is because of the pressure and where the fuel lines meet the fuel rail on the motor . I also installed a fram high performance fuel filter under the battery box in right fender well before fuel reaches the injectors .

good luck with your project jay

 

Mavdog71, where did you get the steel fuel line? I currently have 3/8 steel brake lines on my car as the fuel line. The engine I am putting in is fuel injected out of a '94 Mustang Cobra. I assume the 3/8 steel brake lines will be sufficient since they are made to withstand hydraulic brake pressures? I am planning to use the fuel pumps from an '86 Lincoln Town Car.

Thanks.

 

Jamie

Yes the line i used is steel brake ( fuel ) line from the local parts house . I buy it in 60'' lenght and cut , bend , double inverted flare as needed . I not sure but I think that line will hold 2500 to 3000 psi .so it will work will for fuel line .

jay

 

Thanks, that is exactly what I have, got it at Advance Auto. Good to know. Want to use as little rubber line as possible.

 

Jamie

I used bulkhead fitting through the inner fender apron with AN fitting an rubber line to the fuel rail with AN adaptor on rain .

P.S. will post pic next weekend .

jay

 

Universal in-tank pump install.
http://www.thedetailzone.com/Tanks Fuel Pump Install.htm

In the attachmetn is a diagram of a way you can get away without running a return line.

You basically just loop a line around the pump and install the pressure regulator in the loop. This is the way the new high pressure diesel lines are installed. Saves on tubing.

If you can weld, I would suggest a seperate small tank as a place to mount your fuel pump. That will help with any baffeling issues you might have with mounting the pump in the main tank.

 

ATO

You still have to run fuel line to return not need fuel from the efi fuel rail on the engine or you will dump fuel on the ground ( not good one spark big fire one barbq mav )
jay