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I know, this has been discussed in the past, but i can not find anything recent:
My intention is to get a spare 7.3 and build it from the ground up, while still driving my Truck. Once the rebuild is complete, i swap and then rebuild my old engine to eventually swap into my wifes Truck.
This is a long term project, but i am trying to get some cost ideas here.
So my question to those who have done it is: What is a realistic Number i need to set, in order to do this?
I do plan on completely rebuilding the engine to 0 mls on everything, incl all sensors, harnesses, all new accessories, new oilpan, oil cooler, just everything on the engine, minus injectors on the first build. Also looking into new pistons, cam shaft if neeeded, valves, exhaust manifolds if needed and up pipes..
what is your average Material cost and what type of Machineshop cost i have to estimate? Last engine rebuild i did was 20 years ago and i have no idea about machine shop cost...
Figure for everything that moves on the engine, probably 10-12k, depending on how you shop. I'm sure I've seen a ford replacement harness that could be ordered for about 500$ or so. Not including machining. I can't give you an accurate cost for that, only because the shop I'll be using is affiliated with the military, and offers a really competitive price.
Everyone will be different though. What might cost me only 6k for a good rebuild for everything, might cost you 8k, or say 1.2k if you just do the basic engine rebuild. Shop around. Also, what I'm doing is keeping an excel spreadsheet for all the parts, and material I've put into the truck, quantity, and cost for said part.
So during your first rebuild, you could do the same, then when it comes time for the second one, you'll know exactly how many of what part you'll need, and know exactly how much it will cost.
It all depends on what you are going to do though. I figured about 1k into an S366 turbo, with upgraded internals, a couple hundred for the FMIC mod, new water pump, upgraded tensioner, head studs, HPOP and injectors. Its more like an investment, but Injectors and internals kit will be the most costly of your internals.
My Goal would be to build the engine up to Stock specifications. I usually drive slow in the first place and my heaviest load will be a 10000lbs camper.
If the stock turbo is good, i would rebuild it with maybe a new wheel and new bearings unless there is a good reason to upgrade.
Injectors are not needed on the first rebuild, as i just bought a fresh set from swamps diesel 12k mls ago.
As for the accessories, i would install all new.. ie vacuum pump, alternator..
Logically the HPOP and all sensors need to be new as well as new oil cooler and up-pipes.
Do you guys ever have to replace the Crankshaft ? im also wondering about the camshaft.
In regards to the Cylinder Head, i guess i would need to replace valve springs and possible valves?
The rebuild for the stock turbo is pretty cheap, you can upgrade to the 360 bearing and the wicked wheel. If your up pipes aren't leaking, then I wouldn't worry about it. Manifold bolts will be a big one, you'll probably want to replace those with some good bolts that won't rust. I'm just replacing the bearings on the crank and cam. IIRC unless you had extreme engine damage, it's not necessary to replace them.. Somebody else might be able to chime in on that.. I'm on percs right now, and my train of thought is kind of shifty.
The ford rebuild kit covers al the inernals you would need to replace really. There is no need to replace the crank and cam unless they are damaged. Heads again all depend on what the machine shop thinks is necessary... they can pressure check them inspect the seats and springs an all that.
Just my two cents worth. On my truck I'm just slowly but surely replacing the accessories and sensors that will affect reliability but I'm not messing with the engine. Yours has more miles on it but I'd think the basic engine has a lot more left in it before needing a complete and expensive and labor intensive rebuild. If the compression on your first truck is still OK and it's not burning oil, I would leave the basic engine alone. Unless you are loaded with money and time.
More than one guy has rebuilt his engine only to find that it burns more oil after the rebuild than it did before. And you will have a new engine in an old truck and the truck is still going to need other work.
Seems to me that the money could be better spend on other things, or starting a college fund for your kids or grandkids.
The above is just my opinion and what I would do, you obviously have your reasons for doing what you want to do and they may be better than mine.
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