Ford Powerstroke Diesel Forum - Reply to Topic
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

Thread: differences between ford and international 7.3 Reply to Thread
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  Topic Review (Newest First)
06-06-2009 07:20 PM
XTrider ok, been doing the engine all day today! Basicly everything but the long block is different. exhaust manifolds are different, valve covers are sorta the same, pulleys are different, all brackets are different, engine harness wont work, all the sensors are different, oil pan is different. intake manifold is same tho
I have tons of parts leftover!
06-02-2009 01:45 PM
XTrider my engine in the INT truck has a 4 gal oil capacity, I think oil pans in ford are smaller due to clearance or sumtin. im not positive about the valve covers just someone mentioned it to me. I will know more once I get the motor, hopefully this week.
06-02-2009 01:44 PM
XTrider no difference other than pulleys, valve cover and oil pan. everything else is the same. I buy parts at ford dealership for my INT truck. I just blew the motor in it and will be swapping it with a motor out of F350. just swap the oil pan, and valve cover. I think intake manifold is the same too! timing could be different tho as my brother in law swaped his and the new ford motor sounds different. there is no computer or anything to control the engine like new motors, fuel injection pump controls everything so if that fails you aint going anywhere. easier to work on than the PSD engines.
05-16-2009 08:15 PM
elibenson
Quote:
Originally Posted by Davard View Post
How about differences in HP ratings. Looking over the shoulder at the IH truck dealer, my truck ('88 S1600, ex-Uhaul) is only rated at 130hp and 273 ft.lbs of torque... and it feels like it. I had heard that Uhaul detuned it a bit, but even the normal IH should be around 155hp.

Do you suppose that the main difference is that the fuel pump is severely retarded? It certainly isn't intake or exhaust (2.75" pipes from each manifold to the muffler and 4" tailpipe).

After I get new exhaust manifolds, the next mod is a pyrometer, so I can actually see, but just curious if anyone knew anything here.
I have an '89 S1600 with the 7.3idi in it. Mine makes 180 from what I read on the valve cover. I would say turn the pump up and mess with the timing some and see what happens..
05-16-2009 05:18 PM
Davard How about differences in HP ratings. Looking over the shoulder at the IH truck dealer, my truck ('88 S1600, ex-Uhaul) is only rated at 130hp and 273 ft.lbs of torque... and it feels like it. I had heard that Uhaul detuned it a bit, but even the normal IH should be around 155hp.

Do you suppose that the main difference is that the fuel pump is severely retarded? It certainly isn't intake or exhaust (2.75" pipes from each manifold to the muffler and 4" tailpipe).

After I get new exhaust manifolds, the next mod is a pyrometer, so I can actually see, but just curious if anyone knew anything here.
04-20-2008 11:39 PM
benwill1 try this link "Fuel injection pump adjustment article"
04-19-2008 05:25 PM
rtmerck46 could you help me out on tuning my pump to make more power or atleast give me an idea on what to do.
04-06-2008 07:39 PM
rorabeck thanks for the replys !
04-03-2008 06:40 PM
benwill1 The idi does not have a cps. The pump timming can be changed. From expirence, a Little timming change will make TONS of differance in sound and performance.
04-02-2008 04:26 PM
[email protected] I know one will retard your timing, I have run the IH in my truck with no ill effects, and at the time I bought it, it was alot cheaper then the Ford CPS.

But this is on a PSD, I don't know about the IDI.

Right now I have the one Ford is giving out in the recall. It looks like the International one it replaced, and the engine runs the same. At least by sound.
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