What are the differences between the Van and Truck diesel motors? - Diesel Forum

BravestDog · 05-12-2003, 10:57 PM

Is one version better than the other? If so, why?

Can you compare and contrast them please?

Thanks

yaric008 · 05-13-2003, 12:16 AM

All i have heard is that the PSD doesn't have a waste gate. Other than that i believe everything is the same. Other than like.. a few positions of things such as the oil cooler and dipstick tubes i believe.

I have heard "detuned" but i dunno what exactly you can detune and why exactly you would want to. They don't have intercoolers so perhaps it's to keep the EGT's down a little.

MichaelG · 05-13-2003, 09:29 AM

I think the E-series 7.3 is missing the intercooler. Its output is significantly less the the PU 7.3. The E Series 7.3 output is 215HP and 425lb torque.

With the 6.0, output is the same between the models.

Larry M · 05-13-2003, 02:36 PM

[ QUOTE ]
Is one version better than the other? If so, why?

Can you compare and contrast them please?

Thanks

[/ QUOTE ]

Vans, have different turbo, no waste gate or intercooler and the oil/cooler, air filter system, and coolant reservoir are all different. Also the Alt and A/C compressor are fippled and the PCM is basically in the engine compartment. Our second battery is mounted not in the engine compartment, but on the passenger side frame rail. As already mentioned our HP/torque is lower.

We obviously have the same engine block/heads and I believe the starter, HPOP, water pump, fuel filter are the same as the F-Series and mounted/plumbed the same.

Larry

BravestDog · 05-13-2003, 06:51 PM

[ QUOTE ]
[ QUOTE ]
Is one version better than the other? If so, why?

Can you compare and contrast them please?

Thanks

[/ QUOTE ]

Vans, have different turbo, no waste gate or intercooler and the oil/cooler, air filter system, and coolant reservoir are all different. Also the Alt and A/C compressor are fippled and the PCM is basically in the engine compartment. Our second battery is mounted not in the engine compartment, but on the passenger side frame rail. As already mentioned our HP/torque is lower.

We obviously have the same engine block/heads and I believe the starter, HPOP, water pump, fuel filter are the same as the F-Series and mounted/plumbed the same.

Larry

[/ QUOTE ]

So does this mean the motor is better, worse, cheaper, more expensive...?

Why do they make the motors different for the vans? Is it because there is not much room under the hood for the other stuff?

Is the truck motor a better motor?

Can you give me an idea of why the motors aren't the same?

Thankyou

Larry M · 05-13-2003, 07:23 PM

[ QUOTE ]
So does this mean the motor is better, worse, cheaper, more expensive...?

Why do they make the motors different for the vans? Is it because there is not much room under the hood for the other stuff?

Is the truck motor a better motor?

Can you give me an idea of why the motors aren't the same?

[/ QUOTE ]

Can't really answer absolutely since I'm not a Ford engineer, but I don't think one is better than the other ... both basic engines are made by Navistar I think even in the same plant when both were going into either the F-series, IH vehicles, or E-series vehicles ... here I could be off base since some F-series are built in Mexico and some 7.3L engines might be built out of country, but all E-series are assembled in the U.S. I think it has to do with packaging and maybe some performance (i.e turbo, waste gate, intercooler) issues. I personally don't think you can put a better, worse, cheaper, more expensive on it except to say that with the much fewer Vans the overall Van packaging cost has to be more expensive than the truck and the engine is rated about 20 to 35HP and about 100ft/lbs less if I remember right over the Auto F-Series.

Larry

DivinDave · 05-13-2003, 10:43 PM

Bravedog, you have many questions and I probably have not many answers....

The engines are basically identical in the base construction as has already been pointed out. The difference is in the installation and tuning for the application. The van engine lacking the intercooler, will produce less power than an identical intercooled engine. The density of the air charge entering the cylinder is less and therefore it cannot support the same amount of combustion. Though I haven't checked, I would assume that the van injectors are either smaller or the computer controls them to inject a lesser amount of fuel and the engineers would also use different turbo or output settings as well, resulting in less power production.

I have Cat diesels in my boat and Cat does the same basic thing with many of their marine engines. The same series engine may be available in a wide range of power outputs for a variety of applications. The ones I have can be had tuned anywhere from under 300 to 450 hp all depends upon the size of the turbo, intercooler and injector nozzles as well as inj pump timing. Not that one set up is really any better or worse, just set up differently.

However, the one thing about a diesel engine is the life expectancy is directly related to the amount of fuel run through the engine. All marine engines I have dealt with have the life spans measured in gallons of fuel and not hours or miles. Same goes for our truck applications as well, but we can relate it to miles because of the odometer. So in short, more power requires more fuel and more fuel means less life.