How much can 7.3L make?

[bfloyd4445]

Originally Posted by makaveli200369

If I recall correctly newer common rail injection systems inject fuel at multiple points in the cycle. I know they do this to make the engine quieter. I also thought the ECU's using common rail control the rail pressure and other variables for optimum fuel mixture....but maybe you're right...it might not be needed. Maybe its only getting the hardware to work and the stock ECU can control it. Hope someone can chime in on this.

Humm, we need to do more research. I thought it was the new gen with pizeo injectors that did the multy squirt thing not the previouse common rail system.
I tell you, if I had the time and money I would figure out a way to do it. The old electro mechanical system gets its pulse from the ECU just the same as the old common rail system right? The diference I thought was that psd used two pumps while cr usedd one pump with a return system for excess fuel so there was no air in the system and for constant presure. Is that right or am I out to lunch again?

[makaveli200369]

Well we can start with this thread =)

A few things we'll need to clear up and agree on. Besides the return system...I thought the main benefit to common rail was the increased pressure and better control of the fuel. The ECU's were more advanced. (thats why I was wondering if the stock ECU would work)

The ability to adjust the injection fuel pressure was why they make more power correct? I'll make a scenario and correct me if I'm wrong

Regular Power stroke injection:

Need more fuel for more power. If you put huge injectors, you would need a pump that could keep up with the flow, idle and low rpm non-boost performance would suffer with overly rich mixtures, more difficult to fine tune, and total power limited

Common Rail injection:

Need more fuel for power. Either using stock or mild injector upgrades, stock common rail pressures for low rpm power to prevent overly rich conditions, when sufficient boost or airflow is detected the fuel system cranks up the fuel pressure up to 30,000psi ranges increasing fuel delivery. And also those high pressures atomize the fuel much better then a low pressure system resulting in a even, cleaner burn.

[chancelor]

money makes horse power! for 10,000 you can make just as much with one as can the next! I learned that in Baytown at the drags! wow it was awesome!

[bfloyd4445]

Originally Posted by makaveli200369

Well we can start with this thread =)


Need more fuel for power. Either using stock or mild injector upgrades, stock common rail pressures for low rpm power to prevent overly rich conditions, when sufficient boost or airflow is detected the fuel system cranks up the fuel pressure up to 30,000psi ranges increasing fuel delivery. And also those high pressures atomize the fuel much better then a low pressure system resulting in a even, cleaner burn.

Isn't that what the two pump system with the psd does, or something similiar?
So, it isn't a smooth increase in fuel presure but a sudden increase when the boost reaches a certain level? I'm a dummy and need to go to school I guess

[makaveli200369]

I believe it would be a gradual increase in pressure since the computer is controlling the unit.

Someone want to chime in what fuel pressure the 7.3 works with? I am confused about how the 7.3L increases the fuel pressure. It looks like a standard electric pump in the driver side frame rail. What is jacking up the fuel pressure?

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Last edited by makaveli200369 : 10-24-2007 at 11:17 AM.

[payne5757]

Oil pressure is what is varied and the oil provides the injection force.

[03f3507.3]

i dont know about a max but my new set up thats going in my truck in the next month or 2 is should put down around 600whp on #2 and its getting sprayed to but i dont know how much more ill be looking at exactly with that...

[bfloyd4445]

Originally Posted by 03f3507.3

i dont know about a max but my new set up thats going in my truck in the next month or 2 is should put down around 600whp on #2 and its getting sprayed to but i dont know how much more ill be looking at exactly with that...

So, is this new set up a fuel delivery system?

[03f3507.3]

Originally Posted by bfloyd4445

So, is this new set up a fuel delivery system?

it consist of dual hpops, built motor, huge turbo, b-code injectors and a bit of tuneing along with a fuel system ... if you want more exact specs pm me....

[powerstrokin87]

i looked up that article last night in diesel power its a 4 turbo 1400hp stroker drag car made by wide open performance.