fitting sizes e fuel and HPOP crossover - Ford Powerstroke Diesel Forum
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Old 01-26-2014, 04:53 PM
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fitting sizes e fuel and HPOP crossover

is their a Post some where with all the HPOP and Fuel fitting Sizes/Threads. i have searched and cant find the thread sizes of some stuff ?

I am planning on doing a 38 gal rear fuel tank and getting rid of the midship tank and selector valve and mounting my filters and pump in its location. i know the upper fuel fitting sizes are 1/8 NPT but i dont see the purpase of putting a large pump and lines on the truck and then having a 1/8 restriction before the injectors. i would like to pull the rear fuel rail drain plugs from the head and feed from their, they look to be about 1/2" so their would be no flow loss feeding with a -6 3/8" lines ? but not sure about the exact size and thread? does anyone know what they are or if they are the same size on the superduty? i have a SD motor sitting on a eng stand burried in the back of my shop that i could pull the plug out of and match it up if its the same ?

also im going to be making my own HPOP Crossover and want to confirm that the plugs in top of the HPOP rail are -5 SAE ORB ?

Last edited by johnt2k7; 01-26-2014 at 05:12 PM.
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Old 01-26-2014, 04:59 PM
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the green circled fitting is the one where all regulated retuns normally flow and is 1/8 NPT. and is a restriction

the reb circled plug is where i want to feed

Last edited by johnt2k7; 01-26-2014 at 05:06 PM.
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