Fuel system ? - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 12-19-2013, 02:37 PM Thread Starter
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Fuel system ?

I was looking into an frx, and obviously that let's any unused fuel flow through the head and back to the return line. (Now for my ? Sorry if newbish still learning fuel systems fully)

I was told about a system that runs fuel to all four corners at the heads, my main question is where does the unused fuel go? And doesn't feeding all corners just increase the amount of air in the lines or possibility of air. Which is supposed to be the benifit of an frx is to let said air escape back to the return line.

Anyone running that style set up or know of an instal thread?

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.
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post #2 of 9 Old 12-19-2013, 03:01 PM
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I am not a fan of a 4 line feed, except for a full competition system.

What are your plans?

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
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DYNOPROVEN.COM, PERFORMANCEINJECTIONSYSTEMS.COM and RIFFRAFFDIESEL.COM
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post #3 of 9 Old 12-19-2013, 03:42 PM Thread Starter
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Stuff I want to get list:
175/80 psi's
Riffraff wheel/up pipes
Bts valve body, tq, and trany rebuild.

Just a 350-375 hp reliable cruiser with some towing(sub 10k) and road trips.

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.
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post #4 of 9 Old 12-19-2013, 04:06 PM
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Quote:
Originally Posted by heisman01 View Post
Stuff I want to get list:
175/80 psi's
Riffraff wheel/up pipes
Bts valve body, tq, and trany rebuild.

Just a 350-375 hp reliable cruiser with some towing(sub 10k) and road trips.
I have fuel to all 4 corners I have no issues and I have had injectors out a few times



2000 f-250 superduty
leveled on 375/65/16 MTZ's 16x12 Classic 3,"X" code front leafs, afe stage 2 intake, 175/80 p.i.s injectors, 38R turbo, Adrenaline hpop,ITP return fuel sys with reg,
4" from turbo back, lentech built trans, 12 billet converter, DP tuner!!!
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post #5 of 9 Old 12-19-2013, 04:42 PM Thread Starter
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So do the heads and rails/tubing just presurise with fuel and any excess fuel is returned back via the return line?

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.
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post #6 of 9 Old 12-19-2013, 04:47 PM
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Quote:
Originally Posted by krs1r/t View Post
I have fuel to all 4 corners I have no issues and I have had injectors out a few times
If you have the fuel system shown in your sig then you dont have a 4 line feed, you have a regulated return...

To the OP, I would just install a fuel pressure gauge, do the in tank and pre pump mods and go on with life. Throw the riffraff FRX in there just for good measure if you want.

Keep the fuel pressure at or above 60-65 psi and your good to go.

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
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post #7 of 9 Old 12-19-2013, 06:53 PM
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OP,
The RiffRaff FRx does not supply fuel. It adds return lines to the opposite ends of the heads of the feed lines.
I have it. Just installed it this week. It is a very nice piece and looks well built.
I didn't really notice any difference with it, but I'm happy I got it anyways.

PIS 230/80's, Van Turbo with EBPV, BD Billet Wheel
Lots of money spent at RiffRaff
Dual SD fuel pumps, in tank mods, CNC Fab bowl retain kit. SDK Tunes. Isspro.
Still pretty slow, just less slow now.
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Originally Posted by peixinho View Post
I love finally having my truck back... that 7.3 dog that I was driving was just not cutting it.
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post #8 of 9 Old 12-20-2013, 03:48 AM
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Quote:
Originally Posted by CSIPSD View Post
If you have the fuel system shown in your sig then you dont have a 4 line feed, you have a regulated return...

To the OP, I would just install a fuel pressure gauge, do the in tank and pre pump mods and go on with life. Throw the riffraff FRX in there just for good measure if you want.

Keep the fuel pressure at or above 60-65 psi and your good to go.
You might just be right, I will have to look at the way it is plumbed



2000 f-250 superduty
leveled on 375/65/16 MTZ's 16x12 Classic 3,"X" code front leafs, afe stage 2 intake, 175/80 p.i.s injectors, 38R turbo, Adrenaline hpop,ITP return fuel sys with reg,
4" from turbo back, lentech built trans, 12 billet converter, DP tuner!!!
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post #9 of 9 Old 12-20-2013, 02:49 PM Thread Starter
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Yeah a fuel pressure guage is on my stuff to get list as well, I was thinking for the future on the 4 corner set up but I think the frx will be better for my realistic use. Now getting traction will be my next step since any fuel starvation questions have been answered.

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.
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