Fuel System upgrades

[Jim Fulmer]

We here on the TDR hear allot about upgrading the fuel systems on 24V truck but rarely hear about the 12V ones as it's not usually a problem, but some of us are higher in HP and planning more so what do you do! Strick-9 put this out last year on the TDR and we have chatted about it also, he built his own system by gathering the parts and putting it together but I didn't want that I wanted a complete system with no parts chasing. I'm thinking dang I really want to keep all my cool stuff like a reliable lift pump, fuel heater and I don't want to take my filter housing off and tap it for AN lines ect. So my good bud J. R. Atkins tells me about http://www.haisleymachine.com/ and there stand alone aux fuel system that the puller trucks use so I call and talk to Patty about it, they have systems for 12V and 24V she also tells me it has everything from a new pickup, to the pump, a filter (spin-on) all the line and a new banjo bolt and you change nothing on the stock system... . nothing! So I order it and do the install, it uses a new 1/2" pickup that you install away from the stock stuff, it installs in the tank and not the plastic nut, has a screen filter on the bottom then comes up to the top fitting with a sealing washer and o-ring, then to a hose barb to a 1/2 line to the pump that is rated at 100lbs/hr@125 PSI (12V version), to the filter(spin-on) with a water separator drain on the bottom then to a 3/8 line to the pump, the new banjo has a hose barb fitting tapped into it. So I set it all up do the op/flush check then off for a test run, I have my overflow valve set at 33 PSI at cruise RPM but at WOT I can pull my pressure down to 25 PSI and I'm planning a Piers pump so this isn't going to work, but with the aux system on it runs at 42 PSI at cruise and WOT (100 MPH) pressure is... . you guessed it 42 PSI. These systems are designed for things like hard runs, drag racing or sled pulling and not full time use. I can't thank the folks for the info enough and the Haisley's for the system, now it's time to test the max flow capability.



Jim

 

[Roger rodbolt]

Jim,

Van Haisley had a 24V fuel system on display at Scheids, I was impressed! I'm surprised that more people aren't using the kit as it is a pain as well as an expense to piece together a decent system. Thanks for the review, I'll pass the word to the 12V guys... ... ... ... . Larry

 

[csutton7]

cept ya need to keep at least a 1/4 tank of fuel if not more in the tank at all times --chris

 

[Jim Fulmer]

cept ya need to keep at least a 1/4 tank of fuel if not more in the tank at all times



Chris, I had a choice were to put my stan pipe and were I chose to put it you can just put the tip of your finger between the screen and the bottom of the tank. When I did my flush/initial test the fuel guage was barely reading above (E). My guess is who ever installed that one put it in the wrong place or didn't check it, I took it apart and measured everything first. My $. 02



Jim

 

[csutton7]

Jim--we measured and remeasured when we installed it and are about the same distance as you--we wanted it as close as possible to the bottom, but not so close as to not allow for tank flex---one thing is we did take the filter off--also we were using it as the main supply, this may be the reason it didn't work with low fuel as it's not intended for that use I've now been told--not as a back up or for extra fuel when racing or sled pulling----where did you mount it on the tank--on the 24V we put it on the forward most of the 2 round flat spots about 2" in diameter one to the rear and on to the front--using the OEM as the center of tank----there was no other place to mount it----we may have also gotten the model for a 12V which may be different because we had to lengthen it about 5"-----do a test for me and get your tank to 1/4 tank and go up a steep hill and see what happens--of course if you're using it as a booster pump you may not see any change--but it would seem to me your psi may be different with the system on vs. off-----chris

 

[Jim Fulmer]

Steep hill in Oklahoma Chris at a 1/4 of a tank it would be fine I think but near empty it might be a problem but so would the stock pickup. There is a 10 PSI gain with the aux pump on but my concern was maintaining pressure, not so much now as 25 PSI at WOT is fine but a real pump would suck that dry. My pickup is forward of the stock pickup about 6". I got this as a stand alone system for runs, I had thought about doing the same with the A1000 pump but didn't want to chase parts and fab stuff up... ... it's getting old!



Jim

 

[csutton7]

Jim--thanks--sounds like we installed it in the same place---we were trying it out as a stand alone with another pump. the PE4200 I think it was and the guy had trouble---anytime you do something like this you are setting yourself up for some air sucking--even me with a gravity system---I think the stock setup acts as a kind of resevoir to keep things in line(no sucking air)--return line dumps in there to keep fuel available when on the hills and low tank---chris

 

[Jim Fulmer]

I think the stock setup acts as a kind of reservoir to keep things in line(no sucking air)--return line dumps in there to keep fuel available when on the hills and low tank-



Yea that is true, didn't think of it like that, another thing I thought of (not that it matters now) is there is an additional pickup beside the stock one, I noticed it when I pulled the tank and checked it out when I had the sender pulled... . hum wonder if that would have worked too, might have to look that one up if I get bored!



Jim

 

[csutton7]

yes there is the other tube inside the unit--it doesn't go all the way to the bottom though. . if you lengthened it I think it would work in some capacity..... chris