Fi tech - frame mounted inline fuel pump

[Hazegray]

I just finished my hydroboost project, now moving on to a FITECH fuel injection system install.

The frame mounted electric pump is gravity fed and you have to mount it below the bottom of the tank, which is nearly impossible with a larger aftermarket tank. The mechanical pump doesn't put out that much pressure, so can I use my mechanical pump to feed the frame mounted pump? I really don't want to spend the extra $$ for the fuel commander unit...

 

[Yeller]

There are a lot of us that have the frame mounted pump. Mine mounted about the center of the tank and has been in use for 5 years with no issues. Do not supply the electric pump with the mechanical pump, it will not function well. The command center is a spendy but is the best option. I've installed a lot of injection systems over the years and built my own versions of the command center. My preferences in order are 1) in tank 2) command center 3) frame mounted.

On mine the frame mounted was supposed to be temporary until I built a new tank, well it's been 5 years and it's still on the frame......

 

[Hazegray]

Yeller, thanks for that info! Now to buy the block-off plate...

What brand is that frame mounted pump that lasted for 5 years? I haven't purchased the fuel pump yet, but I've heard the one FITECH has does not last very long.

 

[Broncobowsher]

No need for the mechanical pump. It would likely just end up being a restriction in the fuel system. Any of the standard high pressure EFI pumps in the location you describe will pull fuel from the tank just fine. Many have mounted even further away and higher and find it still works just fine.

 

[NYLES]

Summit Racing® Inline Fuel Pumps SUM-250111

I run this and its been doing great on 2nd year, my tank is in the bed so pump is well below the tank. Was Fitech approved as at the time I installed Fitech their external pumps were on backorder. Ive had absolutely no problems using this pump.

 

[Yeller]

Yeller, thanks for that info! Now to buy the block-off plate...

What brand is that frame mounted pump that lasted for 5 years? I haven't purchased the fuel pump yet, but I've heard the one FITECH has does not last very long.

Its just a parts store pump for an MPI Ford pickup with dual tanks and a frame mounted pump. I'm running it at 60psi, its not supposed to be happy but its just fine, the dyno doesn't lie, if pressure drops it shows right up. running a few of them at that pressure without problems. I do have a new Walbro pump in the gotta get home box along with new filters.

 

[KyleQ]

Avoid the command center - most FiTech problems are due to that thing.

I second the frame mounted pump from the mid 80's pickup - there are a few years that have a low pressure pump in the tank and a hi-pressure pump on the rail. I'm running a cheap replacement for 5+ years now with Ford EFI and FiTech without any issues, and its super quiet too!

I've had mine mounted on the frame rail and currently have it screwed to the floor, never ever had an issue.

I'm using this pump- it's $46
https://www.amazon.com/gp/product/B00AC5LDIG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

 

[bronconut73]

Subscribed

 

[Yeller]

Avoid the command center - most FiTech problems are due to that thing.]

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.

 

[toddz69]

Another good choice would be the Bosch 69100 pump, which was the OEM external pump Ford used from 85-89 on their pickups/Broncos/Rangers.

In April, I passed the 20th anniversary of using mine without issues with 130,000 miles on my EFI engine conversion. It originally came off of an '88 truck chassis from which I plucked it back in '97.

I had one issue climbing a steep hill in '97 where it lost its prime momentarily and one other climb that I can recall a year or two later. That was with a NWMP tank - after I switched to a BC tank and revised the pickup somewhat, I haven't had any issues.

I ran the truck out of fuel last summer - thankfully within walking distance of my house. When I refilled the tank, I determined I had ~0.5 gallons of fuel left in the tank. Not bad at all.

Todd Z.

 

[Hazegray]

Thank you for providing this! Now, I see where the pumps have the stock Ford fuel line connectors. How do I get around this, other than buying the ford fuel connections?

How about the pre and post fuel micron filters? Any other place to buy those?

 

[toddz69]

Thank you for providing this! Now, I see where the pumps have the stock Ford fuel line connectors. How do I get around this, other than buying the ford fuel connections?

How about the pre and post fuel micron filters? Any other place to buy those?

What are you planning on using on the rest of the fittings? AN?

Todd Z.

 

[toddz69]

Thank you for providing this! Now, I see where the pumps have the stock Ford fuel line connectors. How do I get around this, other than buying the ford fuel connections?

How about the pre and post fuel micron filters? Any other place to buy those?

What are you planning on using on the rest of the fittings in your system? AN?

Todd Z.

 

[Hazegray]

Looking at 6AN stuff right now with braided line.

 

[Yeller]

Russell makes the correct fittings to attach the ford pump to #6an

Beware there are 2 styles 1 that uses the factory style plastic keeper and one that the keeper threads in. You want the one that threads together I've had the plastic insert ones fail

 

[toddz69]

Russell makes the correct fittings to attach the ford pump to #6an

Beware there are 2 styles 1 that uses the factory style plastic keeper and one that the keeper threads in. You want the one that threads together I've had the plastic insert ones fail

I was going to mention that I wouldn't use the plastic ones - heard too many stories about those coming loose. I haven't figured out how to use the threaded ones on the one end of the Bosch pump (the end that is part of the formed pump housing).

Todd Z.

 

[KyleQ]

Thank you for providing this! Now, I see where the pumps have the stock Ford fuel line connectors. How do I get around this, other than buying the ford fuel connections?

How about the pre and post fuel micron filters? Any other place to buy those?

I wouldn't waste the cash on all that braided line and expensive fittings unless you are going to spend a lot of time staring at the undercarriage.

The factory ford connector makes a great "barb" and an EFI hose clamp is more than enough to hold the hose on.

You can run low pressure rubber from the tank to the feed side of the pump and EFI rated hi-pressure to your steel line. Run the steel line up the frame to about where the bell-housing is and then you can run a piece up the back of the bell to the motor. It stays cool and out of the way there-

...or you could spend 3-5x on all the braided stainless and fittings. My mentality may be a bit different though, I like ease of install and repair being a trail rig. With Earl's vapor guard hose you don't get that nasty smell anymore either - but it comes at a cost.

 

[toddz69]

With Earl's vapor guard hose you don't get that nasty smell anymore either - but it comes at a cost.

I'm going to use the Earl's hose when I redo the lines in my truck. Interestingly enough, the Earl's stuff is cheaper/ft. than the EFI rubber line I bought back in '97 from Napa (paid about $7/ft for it).

Todd Z.

 

[KyleQ]

Yeah - parts stores have turned into an emergency for me, if I can plan for it, I buy online for a fraction of the price.

 

[Hazegray]

Gawd, my head spins with all these choices. I looked up this line kit, but with the extra expense of a fuel pump and two filters, I'm close to the FItech kit:

https://www.amazon.com/Mophorn-Stai...985&sr=8-2-spons&keywords=6an+fuel+line&psc=1