Begle1's New Bolt-On

[Begle1]

Hmmm...

[lectro_static]

Load sensitive, pressure equalizing soon to be computer controlled pump for your dual fed VE?

[soggy]

It frightens me.

[oldestof11]

Three letters....

W

T

F?????

[slowdiesel]

Water injection Pump?

[1STGENFARMBOY]

Looks to me like sum-kinda cataclysmic charlie foxtrot of hydrolics-r-sumthin.

[RumbleFish]

nothing from begle surprises me. hell he could put a nuclear reactor in the bed and i wouldnt think twice about it.

[PToombs]

I'm not surprised either. I'm sure he'll put it on, it may not hook to anything or actually function, but it will look good.

[Begle1]

It's a 2005 ISX fuel pump/ fuel plate. The pump is the on the top of the plate; it's a gear to gear fuel transfer pump driven by a gear on one of the overhead cams, stock it's specified to put out 100 PSI cranking, 230-275 at idle, 275-300 PSI at 2100 RPM.

The ISX uses unit injectors with two chambers; one chamber fills with fuel to control timing, the other chamber is full of fuel that is later injected. There are five solenoids in the bottom part of the plate; the middle one is a shut-down solenoid. The front two control timing and metering for the front three injectors; the rear two control the rear three injectors. (The timing solenoids are in the middle.)

I'm planning on cutting the plate a couple inches below the transfer pump and tapping the internal passages to tie in fuel lines. Then I'm going to mount the remainder of the plate to where my air conditioner was once mounted and (somehow, I'm open to suggestions on this part) drive the pump with the serpentine belt. I'm going to feed the fuel put out by the pump into the shut-down solenoid hole, and regulate it with either an electronic regulator of some sort or tune in a mechanical regulator or use a needle valve as an orifice.

I don't see why I couldn't bolt this on while making no modifications to the injection pump internals; the vane pump and stock lift pump shouldn't be hurt because the ISX pump won't put out a pressure higher than what the vane pump is capable of. So I should be able to keep the stock stuff for the sake of reliability and redundancy; the lines on the rear of the pump are also inlet and outlets, so I can shut off flow between the ISX pump and the injection pump while still lubricating the pump with fuel through the axillary inlets and outlets.


The unanswered questions are "How do I drive it?" and "What speed do I drive it?"