shimming fuel pressure regulator - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 13 (permalink) Old 03-06-2009, 08:12 PM Thread Starter
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shimming fuel pressure regulator

any ideas on how to shim the fuel pressure regulator on my obs? i have heard of several ways, but which is the best way?

97 F350 cc lb 2wd 4" diy exhaust, diy intake, bully dog 6pos, ranch hand front and back
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post #2 of 13 (permalink) Old 03-06-2009, 09:46 PM
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Re: shimming fuel pressure regulator

Have you checked your pressure to make sure you need to first? that's pretty important.

Dan
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post #3 of 13 (permalink) Old 03-06-2009, 09:49 PM
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Re: shimming fuel pressure regulator

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Originally Posted by secondarychaos View Post
Have you checked your pressure to make sure you need to first? that's pretty important.
Yea, I was wondering the same thing...secondarychaos, you only do it if you have pressure problems?I thought I heard somewhere that you can do it for more power

1995 F250 SCLB 4X4 Auto - '97 D60/10.5" rear, 4.5" PMF RSK/V's, PMF Trac Bars, Sway Bars, MBRP Exhaust, DP F5, Efuel, RRD Diff Cover, Tymar Intake, Isspro Performaxs/Quad Pod, Recon Cab Lights, 05 Lariat SD Steering Wheel
FF250/2's, ARP Studs, Comp Beehives, Smith Bros Pushrods, 1.15 38r, RRD Boost Fooler, 99.5+ Intake, SD 7.3 IC
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post #4 of 13 (permalink) Old 03-06-2009, 09:53 PM
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Re: shimming fuel pressure regulator

You don't need to worry about fuel pressure unless you are having problems with it anyway. And even then I would recommend a Regulated Return and adjust the fuel pressure this way.

1999.5 F-250 7.3l 4x4 6 spd Ported Heads, Head studs, valve springs, DI Push Rods, DI RR, 38R, Walbro fuel pump, 238cc Injectors from Nate @ Unlimited Diesel and Tuned by Matt @ Gearhead Automotive

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post #5 of 13 (permalink) Old 03-06-2009, 10:26 PM
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Re: shimming fuel pressure regulator

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Originally Posted by rancherstroker6 View Post
Yea, I was wondering the same thing...secondarychaos, you only do it if you have pressure problems?I thought I heard somewhere that you can do it for more power
The only good reason to do the FPR shim IMO is to gain back some of the power lost over the years from wear and tear on the pump.
I suppose you might gain a few ponies from doing it on a truck with a decent pump, but then you're putting even more wear on it.
the extra pressure will only help you to a point anyway.

Dan
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.

84 Honda Sabre V65 1100: pipes, jet kit and new tires. Faster than I think I'll ever need.
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post #6 of 13 (permalink) Old 03-06-2009, 10:38 PM
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Re: shimming fuel pressure regulator

Go to a Ford dealer and buy a California FPR kit. Safest way to bump pressure on a stock system.

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post #7 of 13 (permalink) Old 03-06-2009, 10:51 PM
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Re: shimming fuel pressure regulator

all it is a spring that gets weak over time i agree just get a new fpr or the cally kit
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post #8 of 13 (permalink) Old 03-07-2009, 12:07 AM
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Re: shimming fuel pressure regulator

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Originally Posted by mattymx View Post
Go to a Ford dealer and buy a California FPR kit. Safest way to bump pressure on a stock system.
So if my truck is already California truck, does it have this kit?

1995 F250 SCLB 4X4 Auto - '97 D60/10.5" rear, 4.5" PMF RSK/V's, PMF Trac Bars, Sway Bars, MBRP Exhaust, DP F5, Efuel, RRD Diff Cover, Tymar Intake, Isspro Performaxs/Quad Pod, Recon Cab Lights, 05 Lariat SD Steering Wheel
FF250/2's, ARP Studs, Comp Beehives, Smith Bros Pushrods, 1.15 38r, RRD Boost Fooler, 99.5+ Intake, SD 7.3 IC
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post #9 of 13 (permalink) Old 03-07-2009, 12:18 AM
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Re: shimming fuel pressure regulator

All california trucks have the kit already. If you have priced the kit then you know why people use the BB. The kit may no longer be availiable anyway.

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post #10 of 13 (permalink) Old 03-07-2009, 02:24 AM
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Re: shimming fuel pressure regulator

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Originally Posted by old man dave View Post
All california trucks have the kit already. If you have priced the kit then you know why people use the BB. The kit may no longer be availiable anyway.
They will not. The higher pressure FPR was brought about when the CA. models went to AB split shot injectors in mid 1996. So with rancherstroker6's truck being a 95, it will not have the high pressure FPR.

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