Yeah, the wet sumps are what I was talking about. I'd be interested in running them, but not until they've been tested with the Gen III wet sump oil pumps. I guess if you had a HV pump and play around with shimming the spring, it might work.

 

If the pressure pump volume can keep up with the squirters it will work. I'd guess that it would work, and almost definitely a high volume pump would work. We're talking about volume (rotor thickness), not pressure. This has nothing to do with shimming the spring.

 

Oil squirters are becoming fairly common. The oil pump capacity is indeed rated higher than the 5.7 block. This is factory on my 6.1 block:

 

I was just saying you might need to shim the spring in order to get pressure back up to a decent level. By adding extra orifices (squirters) into an oil system, the pressure WILL drop. If the pressure drops too much, a shim in the spring might be a way to get it back up.

 

Yes but like mentioned earlier if the pump can't put out enough to get up to the regulated pressure the spring will not change it.


I know my last three KTM dirt bikes have all had piston squirters and they run 12.5:1 on pump fuel and bouncing off the 11,000rpm rev limiter all day long!

 

What regulates the pressure in these pumps then?

 

The relief valve will operate if the pump volume output exceeds the demand for oiling the engine. If the engine has large bearing clearance, piston squirters, turbo ect. demanding oil the pump may not make enough volume to open the relief valve.

 

ding ding........ At idle with a stock pump the oil pressure drops no matter what spring or shimming has been done... why? because the pumps flow drops below what is required to open the bypass.

Pressure has nothing to do with flow. you can have I high flow with no pressure or high pressure with no flow.


So back on topic.... no hope for us Gen 3 oil galley guys then???

 

Pressure is very related to flow. You said it yourself. Flow goes up, pressure goes down, and vice versa. Volumetric flow is equal to the mass flow divided by the density. Density will be constant in our case. So volumetric flow equals the flow area times the velocity of the flow. With an incompressible fluid, the area is proportional to a force or pressure. If the area goes up, the pressure goes down. Pressure is needed for the crank and cam to ride on. It exerts a force (P=F/A or A=F/P) on the journal in order to keep it "floating". To say pressure doesn't matter, but volume does is null. They both matter.

The orifices are sized in an engine to provide the proper flow and pressure. When you add squirters into a system that wasn't designed for it, the oil will take the path of least resistance, and possibly starve the other parts.

So the spring cracks when the pressure in the system overcomes the spring rate? Ok, shiming it will just increase the threshold at which it cracks. So I guess I was smoking crack when I said shiming it might work, because the system will probably never reach the pressure that unseats the spring. I just remember people having low pressure issues on tech and shiming it seemed to cure the problem.

I think this is directly on topics though. I don't want to see you or anybody tear down their engine, have install squirters, only to find out the need a $2500 dry sump setup to support it.

 

Anybody know the gph a high volume pump flows? I could figure out what will happen given the orifice size of the squirters.