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  1. G. Mann

    Having problems installing zf5

    If you are working on gravel, do two things. 1. Buy 3 sheets of 4x8 plywood or particle board to make a smooth surface to work off of under the truck. 2. Call and find a local rental yard that rents a transmission jack, rent one. A good one. The transmission jack will let you precisely adjust...
  2. G. Mann

    Used 7.3 Engine

    Finding the right answer in this case will be like losing a set of car keys... you will find them in the last place you look.... ;)) It troubles me that you are getting a flow of coolant into the oil pan, enough to see it running out the drain plug is HUGE amount... BTW, water is not a good...
  3. G. Mann

    Used 7.3 Engine

    Thanks, now that I know the truck is a 97, that helps me try to figure out your problem with the truck. I forget, in 97, did Ford still route the injector wiring harness under the valve covers? Late 94 & 95 did, and heat and oil inside the valve covers often damaged the injector harness, which...
  4. G. Mann

    Used 7.3 Engine

    You have a 7.3 IDI engine with a degas bottler? ***? What year are you driving? This doesn't add up right. Does your radiator have a cap? [it should, if it's an IDI 7,3.] Did you replace the water pump sometime in your ownership of the engine? If you did, did you seal the bolt threads that...
  5. G. Mann

    Used 7.3 Engine

    Suspect you have a blown head gasket. Start the engine, take off radiator cap, Look for coolant to surge or bubbles as you rev up the engine. When engine is running, combustion gasses have a lot more pressure than coolant can handle, it will cause the coolant to surge up when you accel above...
  6. G. Mann

    Need help identifying a 1990 , 7.3 block to rebuild

    Thanks for everyone who replied. I still can't sort out where on the block I would find the number set that gives the serial number. Anyone got a bare clean block setting around and a picture of exactly where the number set is found? Or, can tell me where to find the number set? Thanks in advance.
  7. G. Mann

    Need help identifying a 1990 , 7.3 block to rebuild

    Hey guys, I'm looking at a complete 7.3 engine to buy to rebuild, it's about 200 miles away, which means so far, only talked to the owner by phone and email pictures of what he has. I'm looking for the engine serial number, then how to read it to see if it's a turbo block. Where is the serial...
  8. G. Mann

    Replacing head gaskets, what else?

    Rebuild and reseal the oil cooler ! While you have the engine out. Valve guides and seals, along with checking the seats and heads for cracks. Front and rear main seals.
  9. G. Mann

    Cleaning out the radiator

    I've used plain vinegar [couple dollars a gallon at the supermarket] to dissolve the calcium deposits in the cooling system, with good success. It is cheap, biodegradable, doesn't pollute anything, and works on calcium and rust both. Vinegar is a mild acid, like citric acid, only cheaper and I...
  10. G. Mann

    New head gaskets worth it?

    Pull the heads. Replace valve guide seals, at minimum, with the miles you have they are tired or toast. Check the valve guides, if you turbo, you have increased the load on the valves. If they don't seal right, you are blowing boost out the valves and don't get all you want or paid for. Check...
  11. G. Mann

    Battery isolator dual batteries both dead? help

    If I understand exactly what you did, you unscrewed the battery isolator and let it hang? I'm betting when you dismounted the islolator, you removed a necessary ground for that piece, which is part of the charging circuits as it is wired in... thus, it's missing it's ground, so it is not...
  12. G. Mann

    is an extended cab swap practical?

    One of my trucks is a 92 F450 [7.3 ZF5] cab chassis. About 6 years ago, I mounted a dually 8 ft bed on it. That required that I make a set of bed mount brackets and weld them to the outside of the frame. Like your truck, mine has 11 ft from the back of the single cab to end of frame, so to...
  13. G. Mann

    Clogged fuel return line - rear tank

    Do you have 3 friends who can give you a hand for a few minutes? 4 people can lift off the bed really easy. Or, if you have an engine hoist, rig up some lift straps in the bed stake pockets and use that to elevate the bed off the frame and roll it back. 6 bolts and one wire connection to the...
  14. G. Mann

    Door Striker

    Little trick. Before you loosen the striker door post bolt, draw around it with a lead pencil. When you replace it with a new one, or just replace the plastic bushing, you can always go back to the pencil mark and make "fine adjustments" from that position. Tip: Use a sharp pencil so you have a...
  15. G. Mann

    Farewell

    You will be back... once you have owned one, you will miss it, then one day, another one will appear in your driveway... We will still be here, drop in and say Hi any time.
  16. G. Mann

    How can I tell if I have a dually rear end

    BTW... I may have found a Dana 70 dual wheel rear end complete.. .less wheels... It's only 150 miles away.... hahah... damn... Looks like I might have also found a leaf spring, Dana 60 dual wheel hub front end, which is only 100 miles away, in the other direction... Ahhh... the build plan...
  17. G. Mann

    How can I tell if I have a dually rear end

    If I'm following your post correctly, even if the inner dual wheel location pin is missing, there would be a hole in the Wheel Mount Surface between two studs where it should go.. And, if it is a non dual rear end it would not have that feature... ?? Am I guessing right on that point? You guys...
  18. G. Mann

    How can I tell if I have a dually rear end

    So, the key points to identify a dualy rear end are: 75 inches between hub outside to outside. Roll pin location to index and clock the dual wheels. [first quick check, I think] 45 inch spacing outside to outside on spring perches.. 3.5 inch brake shoes.. wider drums than SRW. That is...
  19. G. Mann

    How can I tell if I have a dually rear end

    No rush, I am happy to wait for good solid information. This is going to be a long bare frame rebuild, so it's not like I will be installing the dualy rear end [which I don't even have yet] this weekend.. To all of you who go out and measure your rear ends.. err.. make that your trucks rear...
  20. G. Mann

    How can I tell if I have a dually rear end

    Hahaha... duhhh... now I have a clue.. Actually... every dually bed I've found already had the fenders GONE... it seems they are in really high demand... or get broken and trashed easily. Diffs are gone before the beds are parted also... so I can't find one to measure, look, or find the...
  21. G. Mann

    How can I tell if I have a dually rear end

    Thanks for that info on stud length for SRW sterlings. Still I don't know how to tell a dually rear end when I find one in the salvage yard, just by looking at it... Anyone know what to look for?
  22. G. Mann

    How can I tell if I have a dually rear end

    Just bought another truck. An OBS 86, long bed, stretch cab Lariat. No engine or trans, and no wheels. Been setting for 9 years, it had a 460 gas engine / auto transmission, that was pulled and sold. I have a truck that was wrecked [with me driving it] that bent the frame in 7 places, cab...
  23. G. Mann

    Rear main seal leakage - should I use a stop leak? [1994 IDI w/ turbo]

    In either case, the flywheel bolts must be removed to access the rear main seal. Transmission removal, flywheel removal, has to happen. While you are in there, take a good look at the freeze plug that lives behind the flywheel also. In and out once, so you don't have to go back for a long time...
  24. G. Mann

    Rear main seal leakage - should I use a stop leak? [1994 IDI w/ turbo]

    I just scrolled through the entire thread and I'm surprised that everyone has overlooked another leak source coming from the same area as the rear main seal... That is the flywheel bolts. The flywheel bolt threads go through the crank flange. If the bolts are installed without thread sealant...
  25. G. Mann

    Trailer towing q's

    Question: What is your rear end gear ratio? It may be to tall to tow a heavy rig... That would make take off a real struggle... like you describe having to use low range to launch....

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