FASS pump installed with pics [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: FASS pump installed with pics


Diesel Dragon
03-30-2005, 07:01 PM
I finally got my FASS pump mounted, wired and plumbed.

The bracket that comes with it has it mounted where I have my Nicktane filter so I had to move it farther back and monted to the fender brace instead. Works good there and since it's not mounted to the frame I hardly hear it in the cab with truck off, when the truck's running I can't hear it at all.

Pump put's out 10 psi with truck off or idleing,
Instead of using the supplied return line adapter that goes in line with the filler hose I tied the return line into the Fast fill kit external vent line that I added in the fall, most of the fuel runs down the vent hose and some comes back up the line to just under the cap.

The pump made a big Diffrence to my VA 200hp box, helped solve a lot of the bursting and crappy running that it was doing between shift's. Run's strong in all the gears now with out too much of a complaint.

If you have a big HP tune you definentlly need a lift pump.

Now I have a seperate fuel/water seperator, a 10 micron filter, then to the Cat 2 micron filter, then up to the factory filter water seperator.

Don't think the fuel can get much cleaner now, plus the FASS pump is constantlly reflitering a lot of fuel at 150gph.

The pump is a flow thru design too, I tried turning the pump off while driving around and the truk still goes good, didn't want to push it though as the factory pump has a lot of resistence now to suck through with all the extra filter's.

My new Supertank should be here soon and when it does I will install a fuel feed standpipe in it to suck fuel from within an inch of the bottom of the tank, plus I'll add another standpipe as a return pipe from the FASS pump that will also go down to within an inch of the bottom of the tank but towards the front of the tank instead, that way there won't be much agitation of the fuel by spilling it into the tank through the factory fill hose.

And I'll keep the factory fuel pickup modified with my Trippin larger pickup cup and larger lines. I'll put a T between the lines with shutoff valves and see which way work's better as far as fuel starvation when running on a near empty tank.
That's my mission for the summer.

Here's some picture's:

Bronco
03-30-2005, 07:05 PM
Looks like you have just about overcome every fuel issue there is.

When you run the second pickup, will you use one of those Holley pickups that shut off if air hits it? 71$ @ Jegs

Diesel Dragon
03-30-2005, 07:20 PM
No I plan on adding a bulkhead fitting at the top of the tank with a 5/8" or 3/4" aluminuim tube attached on the inside that will go straight down to close to the bottom of the tank as a pickup.
I figure I should be able to get close to E without any starvation issues (I hope)
I'll have to measure the Supertank when it comes and see how much fuel is spread out on the bottom at 1" intervals.

Still working on that part.

Diesel Power
03-31-2005, 01:36 AM
good job. did you measure your fuel pressure up front or see how far you can pull it down during a WOT run?

Diesel Tech
03-31-2005, 11:09 AM
If you have a big HP tune you definentlly need a lift pump.Seems to me I've heard that before :D

dieselrcr337
03-31-2005, 01:34 PM
The Fass Has a Built in Bypass. So you Can turn it off and it flows like it was never there. I run mine off a switch and only turn it on when im at the track, or when i need to smoke someone!

Actually i dont know if it still uses the filters when its off.. any one know that answer to this?

Diesel Dragon
03-31-2005, 03:33 PM
Hi Diesel Power,

I haven't put a guage up front yet but I will, I have to see where I can tie in the guage. Maybe at the top of the facory filter in the bleeder screw hole or maybe in the scrader port that I hear about, do you have any good idea's?
I like to find out also how much the pressure drop's after it goes thru the Nicktane filter (best filter setup I highly reccomend it) and the factory fuel filter. When I find out I'll post the numbers.
And then I have to find someone with a Tech2 (Mackin) to see what the rail pressure is dropping to.


Hi Diesel Tech,

Yup you did say it and others have said it and I belived everyone but I didn't realize how MUCH of a diffrence it made, like night and day. The 200hp VA I have on there now went from a real POS -:t to a not too bad :) .

People take it from another who's been there, done that, and the expert's on the site and put a lift pump on for the big tune's, you will see a BIG diffrence.

And now I'm sitting here with a new fuel pump on the truck and waiting for the Fed Ex guy to show up with my Extremely pleasing new ECU, which will make my truck Extremely quick and Extremely fast and put a Extremely big smile on my face :D :D :D

Anybody want to buy a 200hp VA box tommorrow ):h

Thanks Steve :ro)





Hi dieselrcr337,

The FASS instructions say the fuel still goes thru the filters even with the pump off. ;)
My only concern is if the factory pump can pull the fuel thru the 3 extra filters that I have on now plus the factory filter with out burning itself out in the long run. Don't know how much and how long it can do that and I imagine if the factory pump goes bad it won't be a cheap fix. :(


DD

Diesel Power
03-31-2005, 03:52 PM
DD - i posted some pictures here of my autometer install:

http://dieselplace.com/forum/showthread.php?t=9862&highlight=autometer+fuel+pressure

you can see where i tied it into the OEM filter bleed screw hole. seems like a good spot. as for the cat filter, every truck i have checked (w/o lift pump) has measured anywhere from 0 to .25 InHg after the filter is installed.. basically not much at all..

i've ran one before my super diesel pump setup and also the super diesel pump setup by iteself. didn't notice much difference either way.. i figured this would be worse as most pumps don't make good suckers but its hard to tell. so if there is a difference it isn't much.

Diesel Dragon
03-31-2005, 04:25 PM
Thx DP,

I'll see if my supply house has the fitting,
10mm X 1.5mm X 1/8" female NPT
Then if only Nexus would hurry up and come out with the guage quickly.
Maybe I'll just get a cheapie guage for now.

Thx for the help


DD

Diesel Dragon
03-31-2005, 07:43 PM
Wooohooo

Fed Ex showed up.

I'll be experienceing Extreme tire roasting rice eating black SMOKIN fun this weekend. ):h :D ):h :D :ro) :ro)