f250-450 all have internationals

550 and up can have international, cummins or cats etc

The inline design of a cummins engine is not as important as the longer stroke (wich causes throwing rods and cracked heads and blocks) more often than the PSD, but theoretically better for tourque by diesel combustion

 

i don't agree the scummins is junk, i just know(and can prove) my psd is better all around.

 

It's actually the 650 and up. You have to get out of the pickup bodied trucks to get those options.

 

Sorry, it doesn't work that way. If simply having a longer stroke caused broken rods, cracked heads, and blocks, every big rig and diesel train in the country would be down.

All else being equal, a longer stroke will, however, lower the safe operating rpm of the engine. So, if you are used to a 6.0 PSD - or any kind of gasser - and you try to rev a 5.9 Cummins to 4000 rpm, you very well might ventilate the block with a rod.

Two things to keep in mind -

First, that a Cummins will not safely operate at 4,000 rpms does NOT prove it is junk. If a Cummins is destroyed in that manner, it falls under operator error, not a design problem. If you try to rev ANY engine higher than its design limit, the results can be disastrous.

Second, a 5.9 Cummins has a stronger lower end than a PSD. I love my PSD, but facts are facts. Don't believe it? Take a good, close look at recent diesel-powered racing vehicles. Oh, sure, there are some very fast PSDs - but they are chasing the Cummins powered vehicles, not leading them.

 

One crazy race diesel...

 

Wow! I like it! Any idea what the engine design and output specs are?

 

I'm a fan of internal combustion engines - I don't care who builds them as long as they work well. In fact, high performance or low performance, if there is something exceptional about an engine, I have great appreciation for it.

Hell, I LOVED the Chrysler slant-6. It was low-maintenance, bullet proof, and would keep running long past the expiration date for the car it was put in - even when the owners NEVER changed the oil!. My Toyota 22R was the must durable, longest-running engine I've ever owned. My 7.3 doesn't count yet - so far it doesn't even have 1/3 the miles on it that my Toy did when some clown totaled it for me.

So, i have a little problem. I really don't understand the vitriol expressed here about Cummins. The fact that the 7.3 is a great engine is NOT diminished by the fact that the Cummins 5.9 is also a great engine - there is room in this world for more than one great engine. The ONLY reason I wouldn't have a Cummins is because it comes in a Dodge, and I have no admiration for the way Dodge's are built.

I probably would be just as happy with my Ford if it had come with a Cummins instead of a 7.3 Navistar - However, I have to say that I have never heard a Cummins that sounds as nice as my 7.3 with its 5 inch exhaust!

For people unfamiliar with the history of Cummins, I'll only make two points. FIrst, Cummins was the first company to prove the commercial value of diesel engines. In a roundabout way, we may owe the existence of the 7.3 to Cummins. Second, Cummins also raced diesels many years ago. In 1954 (I think that is the right year) a Cummins-powered race car captured pole position for the start of the Indianapolis 500. It didn't win, but by capturing pole, it proved the potential power of diesels. But supercharging was banned at Indy, so diesels went away.

Also, here is a fun pic from 1931.

 

http://www.ultimatecarpage.com/images/large/2611-2.jpg

The Audi R10:
Engine TDI 90º V 12
Engine Location Mid , longitudinally mounted
Displacement 5.500 liter / 335.6 cu in
Valvetrain 4 valves / cylinder, DOHC
Fuel feed Direct Fuel Injection
Aspiration Twin Garrett Turbos
Gearbox X-Trac 5 speed Sequential
Drive Rear wheel drive
Power 650 bhp / 485 KW
Torque 1100 Nm / 811 ft lbs
BHP/Liter 118 bhp / liter
Power to weight ratio 0.7 bhp / kg

Their first race out they would have had a 1-2 finish had a tire not blocked the cooling duct on the #2 car and the system that sends all the info about the car to the pits stopped working. Talk about dumb luck. They cleared it and went back out but decided it would be better to not run it in such hot conditions before they could look everything over. My roommate was at the race and he said that they could consistently get at least 10 extra laps before pitting than the gassers. I can't wait to see this motor in an S8

For more info about the car and the first race Click Here

 

Wow! That is even more impressive than I expected. There is an interesting correlation between that ultra-modern Audi and the ancient Cummins race car pictured above it - a note with the picture said that the car didn't have to stop for fuel, tires, or any other reason during the race. Apparently both race cars go farther on fuel than their gasoline or ethanol powered competitors.

Gee. What a surprising revelation!

 

my intent wasn't to bomb on the scummins, more just to say how impressed i am with the psd as a total package.

 

the only reason i rag on cummins engines is because the 5.9 ISB is in a Dodge. thats' it. im sure if ford had the cummins, then this thread wouldnt be here, plus my cummins would be well over 450 hp by now with what i have in my truck's engine. i am not saying that cummins is a poor built engine at all. infact, i think the cummins is a better engine to put in a truck, if it were possible to get a roller and custom fab any engine in. the cummins is very verastile for construction equipment too. the 46637 wix filter is designed for a IR pavement roller with a 5.9 cummins, afterall. but, i am not giving up on my powerstroke. i love it and would not put a cummins in my truck. doing that is like screwing your own sister.

 

the only reason why you say that is because you compare your newer psd to an older cummins. apples to oranges. two totally diffrence classes of engines. thats like comparing the new 6.0 to the 89' cummins. then stating that all cummins are junk. your foundation is quicksand

 

I'll go along with the Cummin's not being a junk motor (just too noisy) but speaking of quicksand foundations, you are referring to the Dodge truck the poor Cummin's is being installed into?

 

well i can see you point there. but i am going to have to defend my fathers trucks. i will agree that the older 12v's were not the best trucks to surround that cummins with but it seems that scince the 24v and the 3rd generations has come to market that truck has become alot better. so to me i think that the rumor that the truck is junk just stems from the older models. kinda like the tranny rumors. i got to give it to them they make a good truck. i had a 95 cummins and i had alot of trouble out of it. but my father kept on with his dodges and has had awesome experinces with them. the cummins engine has been a staple in the hauling industry and hs seen little change to keep up woth the market and epa. all they do is modify it slightly. but ford on the other hand has been all over the place , in my opinion. they had the 6.9 then the 7.3, revamped that, then discontiunued it. ( 7.3 is a awesome engine by the way) and not the 6.0 which has given them trouble, and the rumor of ditching that to go to the 6.4. just not alot of consistancy there. not slammin ford because i like my ford it just seems that cummins is a tried and true staple there and with the changes dodge has made. i think they will rival ford all the way. oh i almost forgot. the new cummins engine you can hardly hear run. pops just got another one. super quiet

 

the only reason they are dropping the 6.0 is for emissions. won't meet tierII emissions. same with the 7.3, the only reason they dropped THAT is because of emissions. Tier I at that time i believe. and, the 6.4 will only be compliant to 2010 or 2012 i hear. don't be surprised if you see a electric-diesel in pickups in the near future..