how about comparing the lifespan of a set of psd injectors vs idi injectors.

 

my question is what are you looking for out of the truck?

 

Why how long do the psd injectors last? I have never had a psd but my IDI injectors last about 150000 miles. They might have lasted longer if I had taken better care of it. Just sayin... but really depends on what you want the truck for. Both the IDI and the PSD are great motors so it comes down to what you want to use it for and which one seems to be the better truck. Like I said before I cant speak for the PSD, but I really like my IDI.
T.

 

i have had no experience with a psd but i have read that with the correct maintenance and regular maintenance they can last the life time of the engine with no issues. 350,000+ on the original injectors.

 

Idk bout that, when the 84 was wrecked I looked at a 97 stroke with 225k and the injectors were going, thing is it belonged to a older Ford Mechanic....

 

And the electronic injectors those PSD have are FAR more sensitive about dirty fuel or water going through 'em.

 

Go with the IDI!

 

Why not ask the guys in the 6.0L forum; they'll tell you the same thing we have

 

I am gonna be using the truck for roadside assistance duties for my shop.

 

So in other words, it would be pretty embarrassing to be sitting along the side of the road broken down in it!

The newer truck is going to probably look nicer and be better for marketing, but the older one will be simpler to maintain and overall reliability is higher (due to the less complex systems used).

Too bad that we can't buy brand-new "glider" trucks (everything new except w/o a motor) and put our choice of vintage engine in . . .

 

I'd take the 2005 and then stick my cummins in it

 

That's a low price for a 6.0L. I would be wondering why.

I don't need a PSD for what I do. I would stick with an IDI mostly because it is simple and parts are cheap. You will want to plan at least an EGR delete with the 6.0L because that has always been a major weak spot for them. If it has a DPF, delete that, too.

I don't understand newer Diesels that use engine coolant to cool and recycle exhaust gases, inject fuel into the exhaust, restrict exhaust flow with filters and inject urea into the exhaust. All in the name of converting "bad" exhaust gasses into other "bad" exhaust gasses. All the while consuming more fuel and reducing efficiency.

 

There is no mystery - it's all about lowering exhaust emissions.

The cooled EGR is to reduce combustion temperatures which lowers the production of NOx (oxides of nitrogen). There is a tradeoff that has to be made - the higher the combustion temperature, the less soot there is, but the more NOx.

So you either can burn real hot and have less soot, and then deal with the NOx in the exhaust using Selective Catalytic Reduction (SCR, which uses urea injection into the exhaust), or you burn cooler and produce less NOx (and thus don't need SCR) but then you need a soot trap or Diesel Particulate Filter (DPF) in the exhaust to catch the soot. Or you do both (SCR + DPF).

But the problem with the soot trap is, it plugs up! So in order to make a self-cleaning trap (so you don't have to open the thing up every other day and clean it), it has a "regen" cycle where extra fuel is injected into the exhaust which burns very hot and burns the soot out of the soot trap. The regen cycle is what leads to flames shooting out the tailpipe under certain circumstances (plenty of good videos of Fords doing this on Youtube). Does this "waste" fuel? Sure, but it's considered a necessary evil.

The exhaust is cleaner from doing this, but as we have all seen, there is a price to pay for that. Proper maintenance is CRITICAL for these newer diesels. Even scarier with the newest ones is the extreme sensitivity to poor-quality fuel which can cost thou$ands in repairs. Plenty to read in the other forums on this topic.

 

SCR primarily deals with nox, which in theory would allow you to run less EGR. Oddly enough the 6.0L could have benefitted from this.

 

I guess I shouldn't say I don't understand what they are doing because I do. I just don't see the real benefit. Sure NOx is reduced but from what I understand, Co2 is increased. It seems to fly in the face of all the eco-***** who preach on about Co2. To me it seems like trading one evil for another. It's all due to EPA regulations anyway and the EPA has a specific agenda(s).

I have seen trucks go into regen on the highway. They leave clouds of smoke for miles and the smell makes you want to gag. Not only are they burning twice the fuel my IDI does but when regen kicks in, they put out more smoke than my truck does in two months! See my logic?