Power Strokes 1994-1997 Upgrades and AftermarketUpgrading or adding OEM or aftermarket equipment to your 1994-1997 Ford F-Series with Power Stroke engine.
Has anyone ever tried shimming with something larger. I was thinking I could boost my pressure with something larger. Say a cut down bolt thats bigger than a BB. How high can a stock pump push up the pressure?
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Diesel Tech For Yardmaster INC.. College Degree In Heavy Duty Diesel and Power Generator Systems
1997 F-250 Heavy Duty 4x4 Off Road EX.Cab Short Bed. -4" Suspension Lift - 4" exhaust - 3" Downpipe - 5" Stacks - 10Kmod - Shimmed FPR - Home made air intake - Rosewood Stage 1's - TS 6pos Chip - 4:10 gears - Valair SMF conversion - currently tore apart for restoration
2004 F-350 FX4 - 4" Turbo Back - WORST truck I have ever owned - For sale
Back when the BB mod was first posted several guys tried going higher on fuel pressure. The conclusion was that you can go too high and, if I remember right, 80 is the max before you start losing improvement, 60 seemed to be near optimum. There is a variation on the BB mod where a cap screw is put in the spring to increase pressure. If I am wrong on any or all of this, someone correct me.
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2010 Ram 3500 Cummins, AT, 4x4, CC, LB, Line-X, B&W Turn Over Ball, RBW Lil Rocker modified to fit B&W, Milemarker hyd. winch. Elkhorn 9VS slide-in, Nomad 24 ft. fifth/w slide, Century topper, old classic Sooner 18' 4 horse stock trailer. StarFlyte by DynaMax 6.8 V10.
Formerly: 97 F-250 SC LB PSD. 4x4, With lots of Goodies. Twas a good truck. If you don't care where you are, you ain't lost.
Larry
__________________ 97 F350, Custom intake, 5in exhaust, HPOX,17* HPOP, Rosewood stage 1 injectors, Powerhungry chip, 18k dfuser mod, shimmed FPR, 6 in lift on 37in interco M16 radials, firestone ride right air bags, built trans, bully dog shift kit, 12,000 HID headlights, 12,000lb winch in the front and a 9,500lb in the back, custom strobe package in headlights and taillights, LED bed lights, DVD, navigation, and much much more to come.
I'll second Larry's comments. You could use the 4-40 Socket Head Cap Screw and see what that does (threaded part goes in the spring). You could even use a nut on the cap screw and make it semi-adjustable. You don't want to go over 80 psi, though (more is not better!). You'll also need to make sure that the spring is not going to "kink" if you're using something larger. If you still can't get the pressure up to 75-80 psi, you may need a new fuel pump. Cheers!
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97 F350, Custom intake, 5in exhaust, HPOX,17* HPOP, Rosewood stage 1 injectors, Powerhungry chip, 18k dfuser mod, shimmed FPR, 6 in lift on 37in interco M16 radials, firestone ride right air bags, built trans, bully dog shift kit, 12,000 HID headlights, 12,000lb winch in the front and a 9,500lb in the back, custom strobe package in headlights and taillights, LED bed lights, DVD, navigation, and much much more to come.
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