What a crock of ****. It's all about volume people. How is this gimic going to increase volume of oil to feed big hungry injectors. The only thing that's going to cure that is a bigger pump plain and simple.
Sure your pressures will be up only because now you have a big restriction in the oil log,(manifold). The only thing that will be happy is your ecm because it wont throw a code because the pressure is now fine. But your injectors are still running short . Simple band aid fix for a CEL . Nothing more.
Everyone knows you cant compress a liquid so how can making the oil log smaller increase presure??
Once the log is full of oil it wont make any diffrence. Wow.
Sorry. Still not buying it.
Only reason your icp went up and duty cycle down is because the manifold cant supply the injectors the same amount of oil . A direct result of the restrictions in the log.
Your drag truck going 6s with those injectors speaks huge for the dieselsite adrenaline pump, nothing else. I guarentee you if you took those things out of the rails and put another pump on that truck your power will go up.
Once that log or manifold is full oil and no air it shouldn't matter how big it is . After all it's the injectors that "need" the oil . If there was a way to read the presure at the injector itself after the rail it would be telling you a whole different story.
Ever stop to think that the engineers at international designed the oil rail that big for a reason?
If you know anything about fluid dynamics it make perfect sense.
The hpop lines that supply the stock oil rails are much smaller than the oil rail it self and still have enough area to supply volume for injectors requiring more volume.
So the smaller diameter hpop lines (pipe) feed the larger diamter oil rail (pipe) lossing pressure which in turn loses volume. If you keep the diamter of the oil rail closer to the diameter of the hpop lines you lose less pressure. So there would be no need for a larger pump to make up the difference.
To prove this all FFD would need to do is dyno the truck now with the new rails. Then pull the new rails and dyno again not changing anything else mechanically
On another note the only thing that this would affect is the availble volume of high pressure oil for the injectors. As long as the rails hold enough volume for the the given injector it should work. And it is cause the truck is running making good enough power to get in the 6's.
Not cost effective but could you imagine the possibility of smaller oil lines feeding each individual injector instead of a hallowed out tube that requires more volume. Id say someone needs to get a set of those heads. Lol. Or make new ones.So in our research for the patent, we came across a different design of the head itself. Basically the same design, but with no OIL LOG. 8 lines running in to the injector feed lines in the head. This was not cost effective method for International, so this is when they came up with the oil log method on the head. And if you think about it, the first "Common Rail" system, only using oil and not fuel.
The general equation describing fluid dynamics of this nature is the Hagen-Poiseuille (HP) equation:
dP = 8uLQ/(pi * R^4)
where dP is the pressure difference over the length of the system L, u is the dynamic viscosity (intrinsic to the oil), Q is the volumetric flow rate, and R is the pipe radius.
All injectors require sufficient volume (Q) and pressure (P) of oil to operate. Generally, larger injectors require more volume (Q) than smaller injectors. As can be seen by the HP equation, providing more volume (Q) to the injectors requires EITHER larger dP, smaller L, or larger R.
The pump provides the dP, which drives the volumetric rate (Q), and in practice is the single easiest way to provide more volume of oil, which is why many people opt for aftermarket HPOPs.
While the pump is the easiest thing to replace, the most EFFECTIVE way to increase volumetric flow rate (Q) at a constant supplied pressure (dP) is to INCREASE the radius (R) of the pipes supplying the oil. See that in the HP equation the radius (R) is raised to the 4th power! Small differences here will net drastic differences in the flow characteristics.
In the 7.3l oil supply system the oil log actually represents a larger radius pipe supplying oil to the injectors. In this region of the system the oil will flow the most efficiently and require the least pressure (dP) to move the same amount of volume (Q). Reducing the radius here will not help provide more oil to the injectors, it will further restrict the system.
Reducing that volume will speed up the time it takes to FILL the log with oil, ie. after a complete oil change, but will not provide more oil to the injectors given that the system is already full.
Going with the garden hose and fire hose analogy the question isn't about the volume of the hoses (oil log) but the restriction at the end (injectors). If both hoses have the same size nozzle restriction the larger hose will supply more volume. The only difference will be the time for them both to reach steady state, ie. fill up the hose.
Going further with the fire hose analogy, the reason the firemen use a hose larger than a garden hose is specifically because it will provide more volume of water.
So you think that theres no pressure drop in the oil rail?Going further with the fire hose analogy, the reason the firemen use a hose larger than a garden hose is specifically because it will provide more volume of water.