Super Duty FPR mod? - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 07-21-2010, 02:56 PM Thread Starter
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Super Duty FPR mod?

Is it possible to shim the fpr spring in a superduty like you can do in an OBS? I have been searching around but haven't found much.

My truck:
99.5 F250 4x4 Ex cab long bed
7.3, zf6
Swamps 175/30's
Cales tunes
DIY Intake & Zoodad mod
Muffler Delete
DIY CCV mod
Foil Delete
DIY leveling kit
AIH delete
Autometer Phantom II Boost and Pyro
Luk Clutch

Dad's Truck:
2001 F250 4x4 Ex cab short bed
7.3, 4R100
Muffler Delete
DIY Intake & Zoodad mod
Foil Delete
DIY CCV mod
AIH Delete
DP Tuner F5
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post #2 of 10 Old 07-21-2010, 04:22 PM
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Did you do a search for FPR mod? What year super duty?

(3/98 prod date) with Edge Evolution, MBRP 4" turbo back, Autometer gauges, custom DIY cold air intake, FPR mod, A/C mod, custom built adjustable waste controller, DIY Alpine head unit, navigation, surround sound processor, JL Audio amps and speakers, 15" over head rear monitor and Sony PS2 (for kids), custom behind rear seat sub enclosure with two 10's
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post #3 of 10 Old 07-21-2010, 05:35 PM
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In the FPR there is a spring. I've heard of people putting a small bb in line with the spring to increase the spring rate. Best to get another regulator that you can dial up the pressure you want.
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post #4 of 10 Old 07-21-2010, 08:31 PM Thread Starter
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Yeah i searched for "super duty fpr mod" just to see if was possible with a SD. I did the FPR mod to my old 97 and was wondering if it was something that you could also do to a SD.
My SD is a late 99. I figured that with 270k miles the spring is probably getting a little tired.

My truck:
99.5 F250 4x4 Ex cab long bed
7.3, zf6
Swamps 175/30's
Cales tunes
DIY Intake & Zoodad mod
Muffler Delete
DIY CCV mod
Foil Delete
DIY leveling kit
AIH delete
Autometer Phantom II Boost and Pyro
Luk Clutch

Dad's Truck:
2001 F250 4x4 Ex cab short bed
7.3, 4R100
Muffler Delete
DIY Intake & Zoodad mod
Foil Delete
DIY CCV mod
AIH Delete
DP Tuner F5
tneibling is offline  
post #5 of 10 Old 07-21-2010, 08:48 PM
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yes, you can do it, it is a pain in the butt, yet do-able. I used a small metric screw that fit into the housing part, to shim the FPR. however, like mentioned earlier, it would be better to get an adjustable regulator in order to accomplish your goals
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post #6 of 10 Old 07-21-2010, 09:23 PM Thread Starter
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Alrighty thanks for the info guys.

My truck:
99.5 F250 4x4 Ex cab long bed
7.3, zf6
Swamps 175/30's
Cales tunes
DIY Intake & Zoodad mod
Muffler Delete
DIY CCV mod
Foil Delete
DIY leveling kit
AIH delete
Autometer Phantom II Boost and Pyro
Luk Clutch

Dad's Truck:
2001 F250 4x4 Ex cab short bed
7.3, 4R100
Muffler Delete
DIY Intake & Zoodad mod
Foil Delete
DIY CCV mod
AIH Delete
DP Tuner F5
tneibling is offline  
post #7 of 10 Old 07-22-2010, 12:41 PM
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I would not mess with it. if you crack the housing it costs more then its worth to fix. I run about 55 to 60 on the diesel side and 70 on the VO side. I feel NO difference empty or grossing 22k on either pump. I also will drop to about 45 to 50 grossing 22k on diesel and still feel no change when pushing a solid 70 psi on the VO side pulling the same load.

Just a basic 01 F350 CCLB SRW -Good from a far but far from good
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post #8 of 10 Old 07-22-2010, 12:54 PM
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You mean something like this....? GDS Fuel Spring
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post #9 of 10 Old 07-22-2010, 01:09 PM
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or just do a regulated return and up the fuel pressure and help the injectors out.

1997 Single Cab Dually, S366 w/ Irate mount and plenums, EFuel, Intercooler, P.I.S 175/80s, Corbeau seats w 08 console, 19.5s, 6637, Black Interior with swede headliner and visors, Custom badges, Flight Fab Traction Bars.
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post #10 of 10 Old 07-23-2010, 06:06 AM Thread Starter
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Quote:
Originally Posted by powerhoghp View Post
You mean something like this....? GDS Fuel Spring
Yea something like this was what I was thinking about. The main reason was since my truck has 270k miles I figured the stock spring was probably getting a little weak.

If I had the funds, I would do regulated return in a heartbeat, but living expenses and college must come first.

Thanks for the advise guys!

My truck:
99.5 F250 4x4 Ex cab long bed
7.3, zf6
Swamps 175/30's
Cales tunes
DIY Intake & Zoodad mod
Muffler Delete
DIY CCV mod
Foil Delete
DIY leveling kit
AIH delete
Autometer Phantom II Boost and Pyro
Luk Clutch

Dad's Truck:
2001 F250 4x4 Ex cab short bed
7.3, 4R100
Muffler Delete
DIY Intake & Zoodad mod
Foil Delete
DIY CCV mod
AIH Delete
DP Tuner F5
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