Recent content by DieselDon

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    The relationship between timing and fuel mileage?

    Timing vs GP durability More advance. hotter combustion temps and higher pressure which can damage GPs.
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    Power ratings???????

    7.3 IDI Turbo rods If the rods are getting scarce, the Turbo pistons and pins won't do you much good since they have a larger pin and the non-turbo rods won't work.
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    PSD intake question...

    Reno250. You are right. In the center of the intake ( Ford calls it a Charge Air Cooler crossover ) system, there are several things either mounted to or in the crossover . The hose you mentioned is attached to the Wastegate Control Solenoid and is part of the Wastegate Control. The should be a...
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    The relationship between timing and fuel mileage?

    Up to a point, advancing the timing may increase mileage depending where you are starting from. In a stock 6.9, timing should be around 8 degree BTDC using line pressure timing: .5 degree ATDC using luminosity timing. On a 7.3 IDI, best timing is between 8 & 10 degrees BTDC. Proper setting...
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    Oil Report

    There is a small amount of fuel in almost every oil sample. If my memory doesn't fail me, it is acceptable to have 3 to 5% fuel dilution. Diesel is actually a pretty good lubricant, otherwise fuel pumps and injectors would fail rapidly. Most of it comes from unburned fuel in the combustion...
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    6.9 GP amp draw

    Spade type and bullet type GPs had same resistance. It varied a little from GP to GP but usually were 1 ohm or less cold. Either go to a slow blow fuse or fusible link. I know, initially, the GP circuit draws more than 150 amps, but it is for a very short period of time. This may blow a...
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    6.9 question

    Ford says 860 dry without flywheel, fw housing, accessories or trans.
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    Ford service material for sale

    A retired Ford tech instructor (DieselDon) has much service information available for sale. Much I got in the 6 years since I retired but kept training. I am finally pulling the plug on future training and hitting the road with my wife in my RV. 40 years in the business is enough. Electrical...
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    6.9 GP amp draw

    Ford indicated that the normal GP drew was about 16 amps cold ( 1 ohm or less ). As they heat up, the resistance increases, so the amperage drops to around 7 to 8 amps per GP or around 70 to 75 amps for the total GP system. Temperature change is always a problem when trying to compute the...
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    Power ratings???????

    There is in the 7.3 IDI turbo. They originally came with different pistons, rings, rods and stronger piston pins. Different head gaskets, exhaust valves, and oil cooler ( more fins per inch ) although these parts may now be being used by rebuilders. I've always recommended, if your 7.3 has an...

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