Fass 95 not enough?

[JLibert]

Check my sig, at idle I'm running 17-19 psi. Cruising speed about 15psi. Wide open pressure drops and stays at 11. I've heard that the glacier systems don't drop at all, or very little. Do I need something bigger? Also, this reading is being taken after the factory and the Glacier 2 micron filter (right before the CP3).



Thanks in advance, J. P.

 

[Luken]

If it's only pulling down to 11 I wouldn't worry about it. If you plan on stacking or going with a cp3 mod you will need more pressure. I have mine set at 42 and WOT is 40psi, but I haven't put my modded cp3 on yet...

 

[jwilliams3]

That pressure sounds fine to me.



Do you have the FASS with filters?



I havent noticed a power increase with increased fuel pressure from my fass (from stock settings with fass).

 

[JLibert]

no, I don't have the filters, it's just the pump. My future mods are some type of downloader, maybe a BDDL or a smarty, and a bigger turbo (maybe a sps62 or something similar). A rail pressure gauge is also on my wish list. I guess my goal is somewhere near 500 hp.

 

[Tomeygun]

Check my sig, at idle I'm running 17-19 psi. Cruising speed about 15psi. Wide open pressure drops and stays at 11. I've heard that the glacier systems don't drop at all, or very little. Do I need something bigger? Also, this reading is being taken after the factory and the Glacier 2 micron filter (right before the CP3).



Thanks in advance, J. P.

If you stay above 10psi I would think that is enough to get the job done.



I was good until the modded CP3 - I could pull my 150gph pump done to 13psi...

 

[CHolman]

no, I don't have the filters, it's just the pump. My future mods are some type of downloader, maybe a BDDL or a smarty, and a bigger turbo (maybe a sps62 or something similar). A rail pressure gauge is also on my wish list. I guess my goal is somewhere near 500 hp.

Look at my mods in my Sig. and I'll bet you with the "Smarty and TST stack" I have damn near 500 HP with the Smarty on 8 and TST 2/2. With a MP8 I would. Going to dyno in November, damn I should have got the Con FE!!!

 

[JLibert]

would you reccomend the Smarty/Tst stack? I don't see any mention of aftermarket injectors in your signature. I've read of some smarty users having trouble with smarty, tst and injectors. Does the smarty allow you to rev/fuel past 3,000 rpm's? Why the mp8? Does the smarty not provide enough pressure alone?

 

[driverno8]

I have an AirDog and it constantly stays at 19psi. Now matter what I do. Even at WOT with a TST, Smarty, EZ & injectors. More psi gained me absolutly nothing. Even at 35psi+ it didn't gain me more power. And that's with a stage 2 CP3

 

[SBartel]

95 GPH is more than enough, but the design of the FASS units will not allow them to maintain the pressure you are looking for. You may want to consider changing to a better system. I do not have any experience with a Glacier system, so I can not comment there, but I know the AirDog will maintain its pressure even on heavily fueled trucks.

 

[LowFly]

The 95 GPH can be converted to run 45 PSI when its needed. As for your pressure drop... . you are fine. And based on your pressure... . you have the HPFP? A huge pressure drop @ WOT might be signs of restriction in the lines or a gauge with an isolator that has air in the line. If it bothers you, might check with another gauge and maybe look into the suction line before the HPFP. Might also be a sign of a filter getting dirty. I have also see some foreign debris get into the check ball in the pump and cause a pressure issue at WOT. Make sure you have the 140 micron filter before the pump (IF you have the HPFP) Might look into our BBRK (Banjo Bolt Replacement Kit) for your truck. It replaces the Banjo Bolts between the stock filter head and CP3/VP-44 if you have the HPFP.



BBRK-1001 is the part number



Hope this helps... .....

 

[JLibert]

The 95 GPH can be converted to run 45 PSI when its needed. As for your pressure drop... . you are fine. And based on your pressure... . you have the HPFP? A huge pressure drop @ WOT might be signs of restriction in the lines or a gauge with an isolator that has air in the line. If it bothers you, might check with another gauge and maybe look into the suction line before the HPFP. Might also be a sign of a filter getting dirty. I have also see some foreign debris get into the check ball in the pump and cause a pressure issue at WOT. Make sure you have the 140 micron filter before the pump (IF you have the HPFP) Might look into our BBRK (Banjo Bolt Replacement Kit) for your truck. It replaces the Banjo Bolts between the stock filter head and CP3/VP-44 if you have the HPFP.



BBRK-1001 is the part number



Hope this helps... .....

I only have the fass pump, not the fass filter system

My pressure at idle is actually about 17 psi, cruising 15psi, wot 11psi

I'm not running an isolater at this time

The factory filter was replaced 2 days before the guage install

The 2 micron filter was also installed new 2 days before the guage install

I do have the fleetguard fuel strainer in place which was also replaced

I believe the big line kit that I have may be similar to your BBRK?

 

[tom sweeney]

DIESEL-DAN... . i've just changed my HPFP to the new electric motor,and am showing a drop to 11-12 psi at WOT... . my old HPFP 95gph) did not do this. i will try changing out my main fuel filter,but can you tell me where i can purchase the pre-filter that came with the original fuel pump???i know its Fleetguard,but,like a dummy i forgot to copy down the number!!! thanks ..... tom



ps. i have just the HPFP... . not the complete system

 

[JLibert]

I got the pre filter (strainer) from glacier diesel.

 

[tom sweeney]

New Fass Electric Motor

well,i think i'm going to keep my core pump,it's working fine,even higher pressure than the new pump i mentioned earlier... i'll get some extra brushes and brush caps from DPP and keep an expensive spare... LOL its a pretty easy change-out if needed... ... . tom

 

[LowFly]

DIESEL-DAN... . i've just changed my HPFP to the new electric motor,and am showing a drop to 11-12 psi at WOT... . my old HPFP 95gph) did not do this. i will try changing out my main fuel filter,but can you tell me where i can purchase the pre-filter that came with the original fuel pump???i know its Fleetguard,but,like a dummy i forgot to copy down the number!!! thanks ..... tom



ps. i have just the HPFP... . not the complete system

NAPA part number for the 3/8's 140 Micron stainer: 3270



For any big pressure drop that is noted (5-8+ PSI drop at WOT), confirm with a known working mechanical gauge. Then check fuel filters. If that is good, try the 5 gallon bucket test in my sig.

 

[tom sweeney]

Diesel-Dan,can i order brushes and caps for my old pump from TST ???i purchased my pump from them at May Madness '05... ... didn't know whether to call them or direct to you. thanks for the part # on the pre-filter... tom

 

[LowFly]

Diesel-Dan,can i order brushes and caps for my old pump from TST ???i purchased my pump from them at May Madness '05... ... didn't know whether to call them or direct to you. thanks for the part # on the pre-filter... tom

Tom,

SOrry its taken me soo long to get back to you! Man i dont know what happened here! Yeah... . contact TST. Ask for Part #: BU-1001. Make sure you clean the crud out of the brush recesses as well when you change them out. A poor/dirty brush connection will cause the motor to stop running. 3M Scotch Brite works great for this.....

 

[JMiltier]

how can you turn up the pressures on the 95gph fass pump system?

 

[LowFly]

how can you turn up the pressures on the 95gph fass pump system?

By changing out the spring under the return line fitting in the FASS base. Stiffer spring = Higher pressure. Your kit can push upto 80 PSI.



PS-1013 spring will get you around 45 PSI for a FASS.

 

[tom sweeney]

thanks Dan... . i purchased a spare set of brushes from TST,i would still like a spare set of caps as well... . i may be able to source them locally though..... thanks again... ..... tom