duel fuel pumps to single high pressure?

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duel fuel pumps to single high pressure?

August 06, 2011, 06:06:44 PM

hi guys

I am working on my super coupe engine swap on my 84 Elan T-bird. it used to have a 302cfi engine. I am gunna rip out all the fuel lines and replace it with high pressure rubber Goodyear lines and I aim to remove the frame rail pump and move the filter to the engine bay. I need to swap on a high pressure pump in the tank. at least a 155l per hr pump. any one know of the right pump that will fit in my stock tank setup to replace the low pressure pump? do I Need a new tank or just the pickup assembly?

any help is appreciated.

p.s I will be posting a big write up on the pains of this swap when I'm done. but its will be worth it.

duel fuel pumps to single high pressure?

Reply #1 – August 07, 2011, 04:19:59 PM

What pressure/flow are you looking for? I know you want a 155 lt/hr but do you really need it?

duel fuel pumps to single high pressure?

Reply #2 – August 07, 2011, 05:25:34 PM

Some of the TC guys swap a single pump for a dual one. It is my understanding that the DUAL pump setup like on the SVO has more volume and can deliver more fuel than a single 255. The dual pump system is a real good system for sure. But i think a single 255 will do the job quite nicely. I am going to say the swap should be fairly easy and all that is needed is a new pump in the stock tank location and a bypass hose setup for the rail pump. Good luck on your project. One thing !! I would leave the filter under the car. As a matter of fact i would put it where you removed the rail pump. It makes the rail pump easier to bypass. Installing the filter under the HOOD is a bad idea. For one their is to much heat. ETC ETC. Hope this helps

duel fuel pumps to single high pressure?

Reply #3 – August 07, 2011, 07:02:47 PM

I used the factory dual pump/line set-up when I pulled the 302 CFI and installed a 88 roller 5.0 HO(with carb) and it can produce a lot of fuel. With a battery charger connected and a Mallory 4309 return style regulator ( to duplicate running voltage ) I measured the equivalent of 34 GPH @ 7 PSI which can support 300-325 HP.
However, on EFI I plead total ignorance as I'm old school and believe in a carb/dist set-up to make HP. LOL

duel fuel pumps to single high pressure?

Reply #4 – August 07, 2011, 08:01:45 PM

Hi, guys

I was thinking of the filter in the bay due to how much it sucks changing the filter in the drive way in the rain. As i live in Washington State and it rains 9 to 10 months of the year! But your right, its better down below.

I am going to remove and replace all the fuel lines. They are rather beaten up and are cut up in a few places. so im not worried about the removal of the old rail mounted pump.

I am not going to be doing a lot of extra boost or injectors at this time. Right now i am concentrating on getting it running. My big question is what 155 to 255 fuel pump will fit on the pickup assembly in the stock 84 location. It looks like a rather small pump on the pickup and there is NOTHING listed for what i want to do. Which i cant say i am surprised. all the mustang pumps say 85 to 93. And it looks like the Birds tanks changed in 85 as well and were the same till 88. I beleave they use the same as the mustang pump. So swapping in a new tank is a option that i am not opposed to... but if i can just change the existing pump that would work.

P.S I created this handle because for some reason i could not log in with my old one. found out the lost password emails were going to my Spam filter. My old one is Elan84. I will be posting as that one for now on. Thanks guys for your help.

duel fuel pumps to single high pressure?

Reply #5 – August 07, 2011, 08:05:32 PM

Quote from: QUICKSHIFT;364738

What pressure/flow are you looking for? I know you want a 155 lt/hr but do you really need it?

If i go to a single in tank pump, i will need to replace the low presure in tank pump with a high pressure pump. And at some point after its up and running i am going to increase boost by a good measure and put bigger injectors... blaa blaa blaa...

duel fuel pumps to single high pressure?

Reply #6 – August 10, 2011, 07:33:40 PM

I use the 255 in everything that is fuel injected. Chevys Honda Ford ETC ETC. That pump is AWESOME.

Here i am installing a 255 in my SUPERCHARGED HONDA

http://i28.photobucket.com/albums/c209/tfalconier/IMG_0367.jpg