FASS / AirDog users that bypass their factory pumps, we have a question

Trusted

Trusted

New member
Joined
Feb 9, 2009
Messages
761
Hey Guys,

We have been working to come up with fuel kits that fit most if not everyone's needs. Over the past few days we have been seeing some discrepancies on how these systems are run.

So, I figured that I would post up a general thread to discuss how everyone is running their FASS, AirDog, and/or AirDog/Raptor systems.

We are mostly interested in hearing about systems that don’t use the factory fuel pump. Are you guys still using the factory regulator at the fuel bowl or are you deleting the return line and capping off the regulator port?

Are you able to use the factory regulator if the fuel pump is disconnected?

How are your systems laid out exactly?

Thanks,
Andy
 
I deleted the fuel bowl and sold the stocker. I did run it with the stock regulator for a while. I have the AD/ raptor setup together.
 
I could use some pics of this stuff as well!!! It would greatly help to point out to the old man here how its done!!
 
Whatever you do....don't run the stock return line if the HFCM is still in place...it'll backfeed fuel out the inlet and outlet on the supply side and you'll have a gigantic mess to clean up at 3AM when youre all by yourself and have to finish your truck and leave for Trukfest at 7 that morning.


Don't ask me how I know. LOL
 
airdog.jpg

airdog1.jpg

airdog2.jpg

airdog3.jpg

airdog4.jpg

airdog5.jpg
 
So, Dalpilot you aren't running a return line from the engine.


Anyone using a return line?
 
I was until a few weeks ago, then I deleted the fuel bowl. I am waiting on one of your fuel kits here soon. LOL

The Airdog returns to tank so there is no need to have a return from the engine as well. A check valve would be nice to have but I have seen no "NEED" for it.
 
ive got the AD feeding a fuelabs pump with a itp regulated return. pretty muck looks like dalpilots except i have all 5/8 line. and i used the factory return line from the bowl to the tank.
 
RedRacer,

Did you remove the stock pump?

Where did you tie into the return line?
 
I don't have my aftermarket pump yet, but I am going to delete most everything stock and run new lines from the tank, to the pump and up to the engine where there will be the Stage 1 lines and the fixed orifice kit. I am going to run your oil/fuel delete kit, so my fuel housing will be gone...
 
Trusted said:
RedRacer,

Did you remove the stock pump?

Where did you tie into the return line?
Click to expand...

Andy,

He has nothing left of the stock HFCM and he is running the ITP RR kit which has the custom piece on the stock filter housing in that allows for it to return in the stock line.
 
FaSSt9602 said:
Andy,

He has nothing left of the stock HFCM and he is running the ITP RR kit which has the custom piece on the stock filter housing in that allows for it to return in the stock line.
Click to expand...

The stock return lines go back into the HFCM. So, no HFCM, means the fuel dumps out onto the ground where the old pump was, if he tied back into the return line at the engine. So, where did he tie back into the factory line at?
 
Read these:

http://www.competitiondiesel.com/forums/showpost.php?p=372468&postcount=34

http://www.competitiondiesel.com/forums/showpost.php?p=380608&postcount=42

http://www.competitiondiesel.com/forums/showpost.php?p=380615&postcount=44

Now the only systems that would work perfectly with a regulator on the engine would be any running a non-regulated return pump (HPFP or Raptor). The regulator on the head would work just fine with no probs.

BUT with any regulated return pump feeding directly to the engine, i would highly recommend looking at a flow control valve in place of a regulator. As the flow control valve will return fuel at any pressure that is put on it. The regulator will only start to return fuel once a certain pressure is met.

I know of one kit that works well with the high pressure FASS and does not interfere with FASS return flow to the tank:

http://www.dinofuelalternatives.com/proddetail.php?prod=cck

They are soon to have one for the 6.0L as well from what im told. Very simple install on this.....
 
Trusted said:
RedRacer,

Did you remove the stock pump?

Where did you tie into the return line?
Click to expand...

yes, i removed the stock pump.

the return line is all factory except for the part that ran through the stock pump, i just connected the 2 with a piece of 3/8 hose and some clamps.

i would get you some pics, but its in the shop and it will probably be there for a while.
 
Diesel-Dan said:
Read these:

http://www.competitiondiesel.com/forums/showpost.php?p=372468&postcount=34

http://www.competitiondiesel.com/forums/showpost.php?p=380608&postcount=42

http://www.competitiondiesel.com/forums/showpost.php?p=380615&postcount=44

Now the only systems that would work perfectly with a regulator on the engine would be any running a non-regulated return pump (HPFP or Raptor). The regulator on the head would work just fine with no probs.

BUT with any regulated return pump feeding directly to the engine, i would highly recommend looking at a flow control valve in place of a regulator. As the flow control valve will return fuel at any pressure that is put on it. The regulator will only start to return fuel once a certain pressure is met.

I know of one kit that works well with the high pressure FASS and does not interfere with FASS return flow to the tank:



They are soon to have one for the 6.0L as well from what im told. Very simple install on this.....
Click to expand...

Hey Dan,

We make one for your kits already for the 6.0. http://www.trustedperformance.com/CrossoverLineWithOrifice.html.

I will give you a call tomorrow to discuss what we are doing and some of the issues we are having.

I started this post to figure out what we need to do for a return line. We have a couple customers with custom setups and the return lines we offer don’t work for them. So I'm trying to figure out if we need to offer a longer return line that ties back into the factory lines behind the factor pump.
 
redracer62 said:
yes, i removed the stock pump.

the return line is all factory except for the part that ran through the stock pump, i just connected the 2 with a piece of 3/8 hose and some clamps.

i would get you some pics, but its in the shop and it will probably be there for a while.
Click to expand...

Sorry to hear about the motor. Bad luck
 
The return line back to the tank can use the factory return. If it was me.... Put a 3/8 ball 1/4 turn ball valve comming out of your kit to create an orifice and connect a line from it to the stock return where the old pump used to be.
 
I run a FASS 150/180.
No return reg.
I removed the factory secondary filter, and am using a 3 micron filter in the FASS.
I also installed another Aeromotive 10 micron filter just down stream of the FASS outlet.
-10 line to the front of the engine bay, "Y" fitting with a fuel pressure sensor in it. Then into 2 -8 lines which go straight into the front of the heads...out the back of the heads through -6 lines...into another "Y" fitting which leads to a needle valve where I can adjust the pressure down to 60PSI, and still have return fuel from the FASS. From the needle valve it then goes into a huge fuel cooler mounted in front of the intercooler, then out the return line to the tank where just before the tank, it is met by a 1 PSI check valve...then, back into the tank...
 
I know mines not a 6.0 but mine comes from the tank selector, into the FASS 95/95 with a 3 micron filter, into a splitter block, which then feeds all 4 ports on the heads. There is no return from the engine, been running this for over a year with no issues except a wiring problem which was my fault not the pumps. Everything is gone from the tank selector forward. Only thing I may change is making hard lines from the splitter block.
 
im using an Airdog 150 to feed the front and the back of the heads. not a stock line on the truck.

DSCN2921.jpg

Picture080.jpg


Garrett
 
You must log in or register to reply here.
Back
Top