shimming fuel pump questions - Diesel Forum

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shimming fuel pump questions

Upgrades and Aftermarket - 99 & up 7.3L Engine Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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11-16-2009, 10:25 PM	#1 (permalink)
lariat 7.3 Senior Member Join Date: Jul 2009 Location: fl Posts: 800 My Photos: (0) Feedback Score: 0 reviews	shimming fuel pump questions advantages? will it help with mpg? __________________ 2000 f 250 4x4. ccsb just hit 206,000 38R with Turbo Master 5 inch miter cut stack remote start. Autometer C2 series gauges. 5.5 inch lift with blocks and shackle drops DIESELSITE HEAVYDUTY BOOTS ALL AROUND. ITP in tank kit-awesome! frame mounted pre-filter 20 in diamo rims-33in toyo A/T DP-TUNER F6- no start,stock,60 tow codes, 80E codes, 120 race codes DIY TYMAR with donaldson filter. AIH cut off hood insulation removed always bright overhead display 05 style headlights with 14k HID'S 08 leather front seats bypass oil system running on WMO! DIESEL SITE coolant filtration Denso HT gear reduction starter. Soo fast!!! Wish List..... BTS....Stage 3 hybrids.... Push rods and Spings!!

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11-17-2009, 09:07 AM	#2 (permalink)
FMTRVT Senior Member Join Date: May 2001 Location: Jersey Shore (Not Seaside!) Posts: 4,729 My Photos: (16) Feedback Score: 0 reviews	It's not an MPG boost. Shimming properly bring the fuel pressure up from the Ford spec to the IH spec that IH used for it's motor applications. For some it help with a little better acceleration and reduction in cackle/noise. My theory is that the higher pressure fills the fuel chamber around the injector better (compressing the trapped air in the chamber) so the intake port of the injector gets all fuel and no air/fuel mix. At least most of the time. __________________ Jack Former Vehicle Test Manager - Friction Products 03 F350SC 4x4 6.0 Auto 5/30/03 Truck Modifications below in Pictorials on Facebook. Search in Google - Facebook TooManyToys Step Lights;Painted Flanges; Bypass Oil Filter; Heated Mirror Switch; Reverse Lights; 7.3L Fuel Reg Shim; 6 Disc Radio Speed Volume Mod; Coolant Filter, etc.

11-17-2009, 10:40 AM	#3 (permalink)
losfinch Senior Member Join Date: Nov 2006 Location: Sierra Madre Mtns, Mexico Posts: 613 My Photos: (0) Feedback Score: 0 reviews	What was IH's stated fuel pressure specs? __________________ Early 99 F350 4X4 CC 7.3 Auto. A.R.E. Topper, custom bed carpet/bench inserts, Rhino grill guard, Bugshield, mud flaps, CCV Mod, AIS w/foam sleeve, Fuel filler mod, GOS headlight harness, Hella 80/100s, 02-04 Headlights, Rancho HD steering stabilizer, C-Btr Mirrors, Hella FF1000, Sonnax/Tricumulator, Htr Bypass valve, 31 row 6.0 tranny cooler,front receiver hitch, Quadzilla XZT gauges, ITP Pre-pump/In-tank mods, Pioneer P5000UB w/XM radio, 4 Infinity Kappa 682.7cf, Fumoto valve, FIAMM Highway blaster horns, SS HPX, IDM mod, DP F5 (Stock,Drive-thru,60T,80E,120,80E-Mountain,1200), Walker BTM, RR, Dieselsite BRV Security: CrimeGuard Alarm with remote notification, DIY jimmi-jammers, door cylinder locks and linkage removed, padlocked rear bench seat hinge, PCM, DTRS and BPP kill switches, DIY "pitstop" switch. http://community.webshots.com/user/l...host=community

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