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Thread: 7.3 idi fuel pressure

  1. #1
    FARM DIESEL tater's Avatar
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    green 7.3 idi fuel pressure


    what is the max fuel pressure on a 7.3 idi. how much can the ip take
    tater

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    Official GMM hand model icanfixall's Avatar
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    Usually we run between 4 to 7 lbs but. I understand 9 lbs is about the limit. After that the internal pump timing changes. I'm not really up on whats going on at higher pressures but others will chime in on the facts...
    89 SRW crewcab, Banks Sidewinder Turbo, 8 speed BTS E4OD with a Gear Vendors, Shifts smooth and positive with any load on it. Triple disc torque converter has 150 square inches of friction material, stock has just 25 square inches of material.Transcold Carrier pump helping out Moose Pump and just loven it. 4 inch Straight piped, hydroboost with a 1 5/16 inch master cylinder. 7.3 turbo upgraded motor, ported heads, intake & exhaust manifolds. ARP studs. Block sleeved on all 8. Mahle turbo pistons milled, are 24 to 26 thousands above the deck, then ceramic coated with Tech Line CBX. Line bored and balanced. Decked block. Each piston is 1/4 and 1/3rd gram of each others weight. "BB" injectors. Custom Rodney Red aluminum radiator and running cool. Now it needs my new Hypermax intercooler to help out the famous Moose Pump and a set of Moose Injecters thrown in just for giggles...Double FatMat inside of the crewcab... Nice and quiet too...

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    Senior Member FordGuy100's Avatar
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    Like said to much advances the timing on the pump.
    -Justin-
    1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
    Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges.
    2004 Jetta TDI 5 speed
    2004 2wd Excursion Limited 6.0. Edge CTS Insight, SRL Tune, 6-Phase FICM, EGR Delete, FICM Tune Testing how loyal I am to Ford

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    FARM DIESEL tater's Avatar
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    thanks for the info on that
    tater

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    Using the Force! Agnem's Avatar
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    You'll have to dig, but I posted a thread that showed for each PSI how much the timing is affected on the pump.
    Owner, Conestoga Diesel Injection Our family - The Moose Truck - 1983 F-250HD, The Lady Moose - 1993 F-350 CC dually, The Moosestang - 1987 Bronco (1994 7.3L IDI), The Night Moose - 1995 F-150 (1984 6.9L IDI), The Iron Moose - 1986 F-250 EC, The Moose Wagon - 2002 Excursion, The Moose GT - 2008 Mustang GT 4.6L, The Moose Lodge - 1994 Wilderness 195R Serving the IDI community since 1997! Visit http://MoosePump.com or https://www.facebook.com/ConestogaDiesel

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    FARM DIESEL tater's Avatar
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    could your retard the timing and crank the pressure up to make up for the timing or would it make any difference
    tater

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    Senior Member FordGuy100's Avatar
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    Yes I think you can do it that way.

    But then I also heard that if the internal pressure in the pump gets to high it can actually sieze the head/rotor.
    -Justin-
    1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
    Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges.
    2004 Jetta TDI 5 speed
    2004 2wd Excursion Limited 6.0. Edge CTS Insight, SRL Tune, 6-Phase FICM, EGR Delete, FICM Tune Testing how loyal I am to Ford

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    FARM DIESEL tater's Avatar
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    ok i guess i will leave everything alone. was wanting to go with a fass pump and filters i want to see how many miles ican get out of my engine. im at 267 and some change
    tater

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    Official GMM hand model icanfixall's Avatar
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    The Fass pump will not help us at all.... It really does help the psd injection systems by removing the disolved air thats in the fuel. Remember they run around 20,000 psi injector pressure. Any air trapped in the fuel will harm the injectors. We run around 1800 to 2000 psi injection pressure...
    89 SRW crewcab, Banks Sidewinder Turbo, 8 speed BTS E4OD with a Gear Vendors, Shifts smooth and positive with any load on it. Triple disc torque converter has 150 square inches of friction material, stock has just 25 square inches of material.Transcold Carrier pump helping out Moose Pump and just loven it. 4 inch Straight piped, hydroboost with a 1 5/16 inch master cylinder. 7.3 turbo upgraded motor, ported heads, intake & exhaust manifolds. ARP studs. Block sleeved on all 8. Mahle turbo pistons milled, are 24 to 26 thousands above the deck, then ceramic coated with Tech Line CBX. Line bored and balanced. Decked block. Each piston is 1/4 and 1/3rd gram of each others weight. "BB" injectors. Custom Rodney Red aluminum radiator and running cool. Now it needs my new Hypermax intercooler to help out the famous Moose Pump and a set of Moose Injecters thrown in just for giggles...Double FatMat inside of the crewcab... Nice and quiet too...

  10. #10
    FARM DIESEL tater's Avatar
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    do u know anything about the oil cooler and if you can go with aftermarket it seems like it wouldnt cool anything being right on the side of the engine
    tater

  11. #11
    Official GMM hand model icanfixall's Avatar
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    The factory oil coolers do a great job of keeping the oil cool. They are a coolant type cooler. The coolant enters from the rear header after it has run thru the drivers side block. Then it returns to the front of that side of the block. Kinda seems like its just pushing the same hot coolant round and round but it doesn't. I installed a oil temp port in my oil pan just so I can watch the oil temp. It normally runs about 10 to 15 degrees higher than the coolant... Then when you really pull a grade loaded it can run upwards of 240 to 260 degrees. I saw mine pass 330 degrees once... I lost a poorly installed freeze plug on a new motor at 5200 miles. No coolant... No fluid to tell the sender in the block whats going on... I heard the lifters knocking and saw the oil temp pegged. Tried to pull over but motor froze up. Pistons swelled up so had they stuck to the cylinders.... Not a pretty site when I got it apart...
    89 SRW crewcab, Banks Sidewinder Turbo, 8 speed BTS E4OD with a Gear Vendors, Shifts smooth and positive with any load on it. Triple disc torque converter has 150 square inches of friction material, stock has just 25 square inches of material.Transcold Carrier pump helping out Moose Pump and just loven it. 4 inch Straight piped, hydroboost with a 1 5/16 inch master cylinder. 7.3 turbo upgraded motor, ported heads, intake & exhaust manifolds. ARP studs. Block sleeved on all 8. Mahle turbo pistons milled, are 24 to 26 thousands above the deck, then ceramic coated with Tech Line CBX. Line bored and balanced. Decked block. Each piston is 1/4 and 1/3rd gram of each others weight. "BB" injectors. Custom Rodney Red aluminum radiator and running cool. Now it needs my new Hypermax intercooler to help out the famous Moose Pump and a set of Moose Injecters thrown in just for giggles...Double FatMat inside of the crewcab... Nice and quiet too...

  12. #12
    FARM DIESEL tater's Avatar
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    that stinks my motor is still tight with a little blow-by in easy on the truck. when i got it the guy before me hauled 20 thousand pounds and smoked the clutch and brakes. it is safe he was an idiot.
    tater

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