Increased ICP, Bigger HPOP, What Can It Do For Me?

[cleatus12r]

That's the theory.

[theSLEEPER]

Can you ever have too much HPO?

[907DAVE]

Do you mean volume or PSI? Or both?

[cleatus12r]

You can have too much pressure. You can't have too much volume unless you have so much that the injection pressure regulator cannot bypass enough and you end up with excessive PSI anyway.

[Power Hungry]

It's be theorized that the injection systems don't respond well above 3200 PSI with most systems actually working better at about 2900-3000 PSI. Part of the reason is that the poppets on the injector start floating at some point and don't allow proper injection function.

Most tuners generally limit ICP to about 3000 PSI at WOT. However, at cruise your ICP is closer to about 1600-1800 PSI so the whole over-pressurization issue becomes fairly moot. That is unless you're commanding 3600 PSI at cruise.

[theSLEEPER]

Originally Posted by Power Hungry

It's be theorized that the injection systems don't respond well above 3200 PSI with most systems actually working better at about 2900-3000 PSI. Part of the reason is that the poppets on the injector start floating at some point and don't allow proper injection function.

Most tuners generally limit ICP to about 3000 PSI at WOT. However, at cruise your ICP is closer to about 1600-1800 PSI so the whole over-pressurization issue becomes fairly moot. That is unless you're commanding 3600 PSI at cruise.

How much do ya'll think the HPOP is drawing from the motor, say at 2200 rpm's with 3000 psi.

[choupique108]

Since we are on the HPOP subject, Is it possible to run two stock 17* pupms and is it beneficial?

[907DAVE]

Originally Posted by Power Hungry

However, at cruise your ICP is closer to about 1600-1800 PSI so the whole over-pressurization issue becomes fairly moot.

Wow, should it be that high? Dont think I have ever seen my ICP that high @ cruise(60mph).

[ChuckD]

A guy here in AZ has machined a pump for 24* I am waiting to what he finds out with it.

[Power Hungry]

Chuck,

It gets to a point where increasing the angle of the swashplate reduces the reliability of the pump. That's a lot of angle for the sliders to handle. It make work for a while but I'd be concerned about long-term reliability.

Dave,

It depends a lot on what your definition of "cruise" is. For me, it's 70-75 MPH rolling down the highway at 2200 RPM. Stock, this puts me at 1600-1800 PSI while modified puts me a bit higher at 1800-2000 PSI.