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

[theSLEEPER]

OK... So this is my question.
The way I understand, which may not be correct. Is that the HPOP is of fixed displacement. Meaning it always pumps a given amount for a given RPM. Is this correct?

So, taking the RPM's out of the equation, it's like a water hose...Right?

Lets say you have a water hose with the same amount of flow at all times...

There's a nozzle on the end, like the IPR(yellow), and two nozzles branching off, like the oil rails(red).




So... If you want the two red hoses that are branching off to have LESS pressure, you open the yellow one on the end to get less pressure? And to get more you close the yellow valve?

First of all, is this correct? Or am I way off base? I will ask more questions if it is.

[907DAVE]

Couldn't have said it better myself......your right on.

[theSLEEPER]

OK. Thanks! So, if you can hold 3100 throughout the RPM range in WOT, you'll be getting the best atomization possible?

[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?