7.3 life measured in hours - Ford Powerstroke Diesel Forum
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Old 01-23-2012, 07:53 PM
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7.3 life measured in hours

Anybody know how how many hours the 7.3 should last. I know is rated B50 at 350,000 miles, this means at 350,000 miles 50% of the 7.3's will need rebuilt. With that said I think 50% of the 7.3 are expected to last 24,500 hours. Here's how. International recommends oil changes on the 7.3 (DT444E) at 350 hour interverals. Ford recommends oil changes at 5,000 miles. This means the avarge speed is assumed to be 14.3 mph. 5000/350=14.3. If half the 7.3 were still running after 350,000 miles while traveling 14.3 mph they would have 24,500 hours on them. 350,000/14.3=24,500.
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Old 01-23-2012, 08:15 PM
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Quote:
Originally Posted by Codum View Post
Anybody know how how many hours the 7.3 should last. I know is rated B50 at 350,000 miles, this means at 350,000 miles 50% of the 7.3's will need rebuilt. With that said I think 50% of the 7.3 are expected to last 24,500 hours. Here's how. International recommends oil changes on the 7.3 (DT444E) at 350 hour interverals. Ford recommends oil changes at 5,000 miles. This means the avarge speed is assumed to be 14.3 mph. 5000/350=14.3. If half the 7.3 were still running after 350,000 miles while traveling 14.3 mph they would have 24,500 hours on them. 350,000/14.3=24,500.
Have another beer and go to bed.
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Old 01-24-2012, 04:09 PM
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Funny! But seriously does anyone know how many hours the engine should last? I have seen other diesels on heavy construction equipment with 12,000 hours? How many is the 7.3 engineered to last? There has to be an answer as mileage can only be achieved by assuming an average speed based on the hours run. When an engine is designed the engineering team must must design based on hours of run time. Anybody know the answer to this?
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Old 01-24-2012, 04:16 PM
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Interesting, but since there's no hour meters on them, it'd be very, very hard to even get an idea.
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Old 01-24-2012, 05:00 PM
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The question is how many hours was the 7.3/dt444e designed to last. True that ford did not install hour meters on the 99-2003.5 7.3 equipped trucks. As for an idea as to what my 7.3 has, I drove it off the lot in Dec. 03, is has been used strictly to commute via interstate for for 90% of its time and the other 10% getting fuel. It now has 403,000 as of today. To be conservative lets use an avarge speed of 50 mph. That's puts my engine at about 8,000 hours. How many hours should it be expected to last?
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Old 01-24-2012, 08:28 PM
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idk.... if you can start it without pluging in the winter or any either shes got life =]
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Old 01-25-2012, 01:15 AM
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It's starts without pluging in and with minamal smoke as when new. Once it gets warmed up no smoke at all, well unless I really get on it of course.
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Old 01-25-2012, 04:23 AM
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idk.... if you can start it without pluging in the winter or any ether shes got life =]
You're kidding right?
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Old 01-26-2012, 02:18 AM
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So no one knows the answer?
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Old 01-26-2012, 04:13 AM
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You're kidding right?
It was a joke..........

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