• Welcome to ClassicBroncos! - You are currently viewing the forums as a GUEST. To take advantage of all the site features, please take a moment to register. It's fast, simple and absolutely free. So please join our community today!
    If you have problems registering or can't log into your account, please contact Admin.

Fi tech - frame mounted inline fuel pump

Builtnotbought0

Jr. Member
Joined
Sep 24, 2017
Messages
156
Loc.
Belen NM
And they are usually caused by a supply problem with the original pump. I've built plenty of those systems from scratch, and have always traced problems back to the low pressure pump. I use them more as an accumulator, with a spring loaded check on a return the holds the pressure in the can to 1-1.5psi but use a standard high pressure pump to get it there from the tank (from having problems with low pressure pumps). probably way over complicated but the people that I made them for were starving for fuel during high performance driving either on the track or on the rocks.

Im confused. Do I need a low pressure pump and a high pressure pump? Ive been doing a frame off and im to the point I have a rolling chass without the body on. Ive finished the break lines and Ive installed a new tank and wanted to run the fuel line and install fuel pump. My plans are to order the Fitech but I wanted to get as much installed now as I possibly can since the body is off. I think the direction i want to go is a fuel pump I can go buy at oreillys or autozone and plug in. Please advise guys!!! and do i need to be a subscriber in order to post a pic? thanks
 

Builtnotbought0

Jr. Member
Joined
Sep 24, 2017
Messages
156
Loc.
Belen NM
Im confused. Do I need a low pressure pump and a high pressure pump? Ive been doing a frame off and im to the point I have a rolling chass without the body on. Ive finished the break lines and Ive installed a new tank and wanted to run the fuel line and install fuel pump. My plans are to order the Fitech but I wanted to get as much installed now as I possibly can since the body is off. I think the direction i want to go is a fuel pump I can go buy at oreillys or autozone and plug in. Please advise guys!!! and do i need to be a subscriber in order to post a pic? thanks

Will someone please advise me on the best Pump to purchase..Am I supposed to have a low and high pressure pump? And which pump can I use that is a replacement I can just purchase at a local parts store?
 

GloNDark

Full Member
Joined
Aug 22, 2007
Messages
394
Subscribing, i'm going to be putting a Fitech on my motor when it gets rebuilt this spring.
 

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
49,427
You do not "need" a low-pressure pump to feed the high-pressure pump. It's on option, but most here have found it to be extra work, cumbersome (due to lack of available space under a Bronco) and of little benefit over just a single high-pressure pump, for most of us.

There are legitimate arguments in favor of a sump/reservoir/accumulator setup fed by low pressure, but most of us can drive around just fine without it.

If it was me I would just start with a single frame mounted high-pressure pump and see how it goes. All reports in the recent past seem to have been positive.

Mid-'90's Ford F150/F250 electric pump is available fairly readily. But if you want really the most available pump out there, and don't mind the slightly more hassle-ish installation process, then just get an in-tank pump for your new tank. Assuming it's an aftermarket 23 gallon that is, with the setup for a pump?
The pump for those tanks is a Mustang pump, which is pretty ubiquitous these days.

If your tank is not set up for that, you can still make it set up for one. Or you can mount the F150 pump.
I'm only "assuming" though, that it's capable of high enough pressures. I forget what the FiTech wants, but isn't it in the 60-ish pound range? The typical aftermarket Mustang pump is rated for about 100 psi but only needs to work with 45 or so for the typical Ford EFI setup. It's very likely that the F150 pump will handle that as well, but I don't know that for a fact. https://www.wildhorses4x4.com/product/EFI_Frame_Mounted_FuelPump/fuel-pumps-EB

Paul
 

KyleQ

Bronco Guru
Joined
Apr 24, 2008
Messages
5,480
I'm running a single pump - a replacemetn for a mid 90's pickup pump. It is quiet, dead nuts reliable and under $45!

Precise 402-P2000
https://www.amazon.com/gp/product/B00AC5LDIG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

It ran a warmed over 351W with Mustang Injection flawlessly for years and has been nothing but excellent on my 400HP+ 351W with a Fi-Tech 600 PA setup.

I haven't had any issues running from the stock pickup with the pump mounted off the frame rail. No issues with a fuel cell and it mounted to the floor either - its stupid simple.

I prefer the external pump due to the ease of service option - if for some reason it fails it could be replaced anywhere with a screw driver, not an option with an in tank setup. I like those when the pumps are loud, but that is not the case with this pump.
 

Builtnotbought0

Jr. Member
Joined
Sep 24, 2017
Messages
156
Loc.
Belen NM
I'm using a walbro GSL392. I have mine mounted to the frame. I'm running holley HP efi. check out my video

https://www.youtube.com/edit?o=U&video_id=78PK5hpbOzM

I'm running a single pump - a replacemetn for a mid 90's pickup pump. It is quiet, dead nuts reliable and under $45!

Precise 402-P2000
https://www.amazon.com/gp/product/B00AC5LDIG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

It ran a warmed over 351W with Mustang Injection flawlessly for years and has been nothing but excellent on my 400HP+ 351W with a Fi-Tech 600 PA setup.

I haven't had any issues running from the stock pickup with the pump mounted off the frame rail. No issues with a fuel cell and it mounted to the floor either - its stupid simple.

I prefer the external pump due to the ease of service option - if for some reason it fails it could be replaced anywhere with a screw driver, not an option with an in tank setup. I like those when the pumps are loud, but that is not the case with this pump.

You do not "need" a low-pressure pump to feed the high-pressure pump. It's on option, but most here have found it to be extra work, cumbersome (due to lack of available space under a Bronco) and of little benefit over just a single high-pressure pump, for most of us.

There are legitimate arguments in favor of a sump/reservoir/accumulator setup fed by low pressure, but most of us can drive around just fine without it.

If it was me I would just start with a single frame mounted high-pressure pump and see how it goes. All reports in the recent past seem to have been positive.

Mid-'90's Ford F150/F250 electric pump is available fairly readily. But if you want really the most available pump out there, and don't mind the slightly more hassle-ish installation process, then just get an in-tank pump for your new tank. Assuming it's an aftermarket 23 gallon that is, with the setup for a pump?
The pump for those tanks is a Mustang pump, which is pretty ubiquitous these days.

If your tank is not set up for that, you can still make it set up for one. Or you can mount the F150 pump.
I'm only "assuming" though, that it's capable of high enough pressures. I forget what the FiTech wants, but isn't it in the 60-ish pound range? The typical aftermarket Mustang pump is rated for about 100 psi but only needs to work with 45 or so for the typical Ford EFI setup. It's very likely that the F150 pump will handle that as well, but I don't know that for a fact. https://www.wildhorses4x4.com/product/EFI_Frame_Mounted_FuelPump/fuel-pumps-EB

Paul


Thanks guys. I think the F150 pump is a good starting point. Can I use regular fuel line or is it recommended to use AN fittings..What do your best set up suggestion? Thanks again.
 

KyleQ

Bronco Guru
Joined
Apr 24, 2008
Messages
5,480
Not using both tanks - you would need a 6 way valve, look into it, it has been done.

I ran my fuel system with 3/8" coated brake line. I double flared my connections, used barb to EFI rated lines and clamps between the pump and engine and tank and lines.
 
Top