100% nozzle myth or truth

[85_305]

So in other words, at 3800rpms you'd want say, closer to 2ms pw?

 

[under pressure]

Thats why a 400+ nozzle is needed in the rpm, your injection window is tiny, so pw is very short. Maybe less than 2ms.

 

[85_305]

So larger nozzles, say 100%, would be more efficient at spitting the fuel out in a shorter window in higher rpms. Therefore, larger nozzles can run higher rpms....

right?

 

[under pressure]

Yes, but a 100 can only do so much, this is why the 200+ nozzles are so popular around here.
Take into consideration hpo demand at higher rpms as well.

 

[lincolnlocker]

You cant have 3.3 @ 3800. IDM will not allow it.

it wont allow it or it wont utilize it? ive read pw at 4.5-5.2 on my drw truck wot above 3000rpm.

live life full throttle

 

[Addicted4]

Just cause it says 4+ ms doesn't mean it's happening ever think of that?

 

[under pressure]

Explain

 

[TyCorr]

So larger nozzles, say 100%, would be more efficient at spitting the fuel out in a shorter window in higher rpms. Therefore, larger nozzles can run higher rpms....

right?

Yes, but a 100 can only do so much, this is why the 200+ nozzles are so popular around here.
Take into consideration hpo demand at higher rpms as well.

100% nozzles arent large. Holding them open as long as possible will.make hp around 500. Give or take. But you'd have to be doing it just to say you did it. Hot and smoky tuned that way. I personally wont ever touch another set of 100% nozzles. 80 or 200. Ive never ran a set of 80's on a hybrid so I cant say for sure how that is.

Personally with a 160cc injector and reasonable pw 80 and 100% nozzles were 400hp in my world. 450 was smoky and egts would hit 1400 pretty easily. I also feel the injector itself wasnt of a.high enough capacity for a nozzle of 80 or 100%. But I also cant see a hybrid of 238+cc with a nozzle that small. I dont see much of a niche for them that said. I suppose you could.put.an 80 or 100 on a hybrid and run it at low ouputs of ~300-350 hp and it could be cool and clean. I just at this point see a 200 as a jack of all trades nozzle.

 

[TyCorr]

Explain

That its not achieving those values. Just what he said. The idm "knows" what amount of time it has for an injection event and based on rpm certain values arent physically possible.

 

[02BigD]

Explain

What a scan gauge or AE displays forPW, isn't what the actual injectors are doing. The only way to know what the injectors are doing is to hook up an o scope to observe the actual signals in the injector harness.

 

[under pressure]

So the pw I see on the vcm is not accurate ?

 

[02BigD]

Vcm?

 

[under pressure]

Ford vcm, scan tool

 

[02BigD]

If it plugs into the OBDII, it is not showing actual injector pulse width.

 

[under pressure]

Yup.... Well isn't that crap. So is it close under 3000 rpm.

 

[Hotrodtractor]

You guys that are all questioning PW capabilities at RPM should do some searching and reading about the FDCS signal and read about how the PCM communicates to the IDM. That would greatly improve your understanding of why that PW at that RPM isn't possible.

 

[Tim @ P.I.S.]

The idm "knows" what amount of time it has for an injection event and based on rpm certain values arent physically possible.

The IDM knows nothing, it does what it is told. The IDM is more capable than what it does at this point in time.

 

[TyCorr]

The IDM knows nothing, it does what it is told. The IDM is more capable than what it does at this point in time.

Or it thinks it does what its told...

Its.capable of running a cr injection system...

 

[lincolnlocker]

Just cause it says 4+ ms doesn't mean it's happening ever think of that?

yup thats why i asked the question. i wanted to make sure that it was a false reading that my scanner is showing cuz from what i read is that its well above what it should be running..

 

[Hotrodtractor]

Or it thinks it does what its told...

Its.capable of running a cr injection system...

Come again?