7.3 powerstroke

Does anybody know what the life expectency rating is for a 1999 7.3 powerstroke in a F-350 is....and where could I find that kind of info. I think I read on here once that the 5.9 cummins has a B-10 rating, which is equal to 310,000 miles. Thats what I'm looking for...the B rating, whatever you call it.

HI check out www.powerstrokehelp.com the guys shop truck let go just short of 700000 miles lots of info on the site..

the Cummings 5.9 is a parent block and so is the Power stroke both should last 350k even though mine Cummings only went 257k before it blew . just put another in there and go again.

Powerstroke 7.3 has a B10 of 200,000 miles and a B50 of 350,000 miles.

The Max-force 6.4 liter Ford has a B10 262,500 miles. A B50 - 375,000 miles.

Cummins 5.9 diesel has a B10 rating of 210-250,000 miles and a B50 of 350,000 miles.

Chevy Duramax B10 of 220,000 miles. Wasn't tested to B50.

Isuzu 6H diesel - B10 rating of 410,000 miles.

International DT466E has a B10 of 300,000 miles and B50 of 450,000 miles

Just to add to it the B number is the percentage of engines that failed at that mileage. So the B-10 is when 10% fail. So a select few will fail before this time, but 90% of the engines will outdo the stated mileage.

I think the powerstroke has wet sleeves where the CUMMINS, not Cummings, is a regular bore without sleeves. Why did your Cummins blow up, was it the timing cover bolts that came loose or the dowel pin problem?

oh thanks I needed that explanation...My F-350 has started to make what I would call a valve/rocker arm tick and or mild rapping noise, not all the time but it has done it once or twice each time I have drove it the last 3 days. It only has 227,000 miles on it. I have always used napa gold filters and rotella 15/40 oil every 3 to 5,000 miles, fuel filters around 10 to 15,000 miles, I did put a K&N air filter in it for awhile...maybe 50,000 miles or so. I've pulled a 8,000 lb. skid steer around some, a 2 horse horse trailer. I've never abused the thing. I was hoping to hit 300,000 or more, but maybe not.
I'd like to find a NEW 7.3 to put in it and not a rebuilt one, but maybe not on that also. Anybody know if and where I could buy a NEW engine?

Another good one is:


www.thedieselstop.com

7.3 is NOT sleeved, virgin bore just like the cummins. they should easily last 500,000. i just got rid of mine with a little over 300,000 mile on it. it spent 2/3's of it's live cranked up to 500hp. and still started/ran like a top. just couldn't keep tranny's in it, and the body was rotting away.

So are those the complete, blown to hell, rod through the block figures that don't account for the powerstrokes that die a long slow death drinking oil at an equal rate to fuel?
I really don't know too many people locally who would class a 7.3 anywhere near a B cummins. There might be 10% that ran trouble free...

Rod

The "B" tests are for engines being used hard, and NOT for empty pickup trucks driving down the highway, being used like cars.

Also, the test relates to the first major failure, which may, or may not be repairable.

The 7.3 Powerstroke is also used in IH medium duty trucks and has held up fine, i.e. just as well as 5.9 Cummins. But, I'll assume that medium-duty trucks are often fleet trucks and very well maintained.

I can't comment on people that you know, but around here a failure in any Ford-IH IDI 6.9/7.3, or later DI Powerstroke 7.3 was and is extremely rare. The trucks rot or wear out, engines get pulled and then used in something else. Same with the Cummins 3.9s and 5.9s.

My 85 Ford F250 with a 6.9 has over 400K miles and runs perfect with NO major repairs ever. But, it's a fuel-hog.

My 94 Ford F250 with the IDI 7.3 turbo just turned 300K and it pulled a gooseneck trailer most of its life. It too has never had a major repair and runs perfect. It's better on fuel then the 6.9, but not by much.

My 92 Dodge W250 with the 5.9 turbo/intercooled Cummins has over 300K and also has never had a major repair. Also a trailer puller and also great on fuel use.

People that I know that used them fairly hard or actually worked them got along better. The picup/runarounds seemed to have more trouble. I know of several that changed out several engines, mostly because of excessive oil consumption.
The Cummins, almost without exception, used in the same applications, by the same owners have held up a lot better.
A neighbour also has an IH truck with a non-turbo 7.3. It's held up OK... Manifolds were changed I think which is not particularly major I suppose... but it never set the world on fire in any other way.
I know they often wished they'd looked harder and bought one with a 466. It would have made life a lot easier and the truck more versatile/productive.

Rod

I think many people buying diesel trucks without turbos did not realize that diesel engines have less power then gas engines of equal sizes, and not more. That's why GM originally designed the 379 diesel (6.2 liter) to have equal power to the 305 gas engine. They are almost identical in horsepower and torque curves.

Ford-IH non-turbo 444 (7.3) is close to power and torque as a 351 gasser and that's what it should of been compared to.

7.3 non-turbo has 180 horse @ 3300 RPM and 345 lbs. torque @ 1400 RPM.

351 gasser has 210 horse @ 3800 RPM and 325 lbs. torque @ 2800 RPM.

Now, when the 7.3 turbo came out . . .
190 horse @ 3000 RPM and 395 lbs. torque @ 1400 RPM.

And the direct-injected 7.3 turbo Powerstroke . .
210 horse @ 3000 RPM and 425 lbs. torque @ 2000 RPM. That is for the first year, and power increased as time went on.

And those stats pretty well sum up why the 'B' got to be so popular. Of the same vintage and roughly similar power ratings it had 30% more torque? 40%?
Much like a gasoline engine, the supposed power rating is meaningless unless you drive it balls to the wall... which most probably didn't.

It's really no different than a pair of fire trucks we have in our station. One is an 89 GMC with a 427 and 5/2. The other is an 88 S-liner with a pretty bare spec, doggy 466 and a 6 speed. The 427 will outrun and outpull the 466 but you sure pay a pennance listening to everything whine, howl and vibrate under you. I'd much sooner drive the binder...


Rod