Injector duty cycle

[The1]

you could run them all the way to static 100%, but from all the flow testing ive done these are a few things that have occured to me, the main thing going over 80% is atomization, there is none it's just spraying fuel out the holes, raw fuel is harder to burn, consistency, without the pin firing in the injector the flow rate really depends on what it can flow through from the rail, your fueling tends start going all over the place per cyl. So overall not a good thing when you want to make power. This is why i decided to base my flow testing on 2500rpm@ 3ms for general use, then 6000rpm@8ms to "redline" of the injector.

[Holden202T]

hehehe from what I've seen from the high speed pic you took of my Deka 80's its just a stream anyways ahahaha

[The1]

haha, there's still atomization, just larger particles lol the best ive seen yet is the new EV14 bosch injectors, 6 & 12 hole spray pattern Part number is 0280158279 or 0280158117 and you can get them upto 2000cc

[delcowizzid]

dekas i tested sprayed very atomised
[youtube]https://www.youtube.com/watch?v=hFR9je4Gi8M[/youtube]

[The1]

yeh it does from a distance, what rpm and pulse time? here's a closeup of a 80LB dekka, compair that to the bosch, both of my pics are taken at 6000rpm @ 8ms, so 80% DC, though need to get ahold of big bosch ones to compair as that was only 21LB

[The1]

well no ticking so 100% static i guess.

[delcowizzid]

haha yeah tap the wire on the batt job LOL.heres a dirty vr top left and my horrible 39lb deutchwerk redrills they are streams compared to 60 dekas LOL
[youtube]https://www.youtube.com/watch?v=hXFjxBFMze4[/youtube]

[Holden202T]

Hah beat me, that's basically what my motors getting at 7000 rpm 18psi boost x 6 hehe

[VL400]

When calculating DC from the aldl PW don't forget it does not have battery compensation or opening time added. Can add an easy 1ms to the fuel pulse width to roughly work out a delivered PW. This is why 80% is considered about the max you want to see calcing DC with this method.

[The1]

top left is 901 VN long snout? They are acutually 4 hole design same as newer ones just with a extension housing. Def got a blocked hole