Most people don't want to post in a thread on oil systems because when it comes to oil, Powerstroke owners can drum up more drama than a bunch of high school cheerleaders.
I try to post the facts about it, and here I will again.
The reason for using a piston pump in place of a gear pump as a single unit is because the pumping efficiency of a gear pump drops off rapidly at a given point down near minimum operating rpm. This means that the 500 or so rpm during starter motor cranking is often not enough to produce sufficient pressure for cranking when the gear pump is used alone to power the truck. This was the Gen1. However, once up over the efficiency rpm, the pump efficiency runs basically flat lined all the way out to maximum pump rpm. It was just the starting that was the issue. The Gen1 is capable of many TIMES the displacement of dual 17* pumps.
So, a piston pump was sourced and placed in the stock location that could move MASSIVE amounts of oil from a single pump. Worked and still works great. But the cost is there. Billet adapter, lines, fittings, remote IPR
, BIG ASS pump, and so on. Not to mention fitting a pump of that displacement in the valley is time consuming. That was Gen2 There was an easier way. Again, capable of many TIMES the displacemnt of dual 17* pumps.
The Gen3. Utilizing OEM components to mount the pump to the engine designed by international, the Gen3 simply adds a gear pump to the existing OEM piston pump already on the powerstroke. There are not hot start issues because the OEM piston pump is still there to start the truck in case the gear pump isn't quite up on efficiency at the starter motor rpm. The Haldex pump is NOT a powersteering type pump. It is not a vane pump, but a gear pump. Basically the most
durable pump there is. It is the exact same pump type that the Lube oil pump is on every powerstroke on the planet. Even the other oil systems are drawing oil off of the existing lube oil pump, wich is a gear pump. Also, since it is such a common pump type, and the pattern is also common, you can swap the entire pump out for one of differing displacement on the order of 10min or so. Depending on the pump you go with, the system is once again capable of many TIMES the displacement of dual 17* pumps.
There is an inlet line and a CNC bent steel outlet line...... That's 2. I don't consider that a lot of fittings.
And they simply look good. I mean, any stacked pump system just looks nice. Clean and simple function. I can honestly say (because I've done it many times working on the engine) that I can have the entire Gen3 off and back on in less than 10 minutes total. If that doesn't speak for its functionality with respect to fitment and servicability I don't know what does.
They pump more oil. If you honestly need it, they can pump MUCH, MUCH more oil. Isn't that what dual pumps are for?
I don't want it to make coleslaw, I just want it to pump oil, and it does that well.