I guess you could get to a point where the injectors are maxed out for a certain boost level with high EGT and by putting bigger injectors in the additional fuel helps quench the burn and lower the EGT for the same boost level but then you've got lots of smoke. I think that's what the pullers do, they look like a coal fired steam locomotive pulling a grade. Fuel economy is not one of their priorities.interesting, I have noticed that everywhere I look for aftermarket injectors they claim a reduction in egts. Dirty crooks.
I highly doubt aftermarket injector builders can do a better job than the factory suppliers.Aftermarket injector builders do alot of R&D with alot of dyno time. They get a better spray pattern from stagering spray angles and adding more holes to the tip.
That is not true at all.If you cannot get enough fuel for a given power out in time, you will still be injecting fuel late in the stroke and just basically putting fuel into the exhaust manifold. This is one area where nearly any injector nozzle work can beat the OEM design. They actually have to be less efficient at flame front propogation in some instances in order to meet certain emissions requirements. I don't.
The title of the thread isn't "will aftermarket injectors make more power".428rwhp 180mm^3 per shot of number 2 diesel fuel. That's pretty clear to me. I have NEVER seen a stock injector make more than 300rwhp in person, and only ever heard of 340rwhp. (This is a 7.3L powerstroke)
Again, I call BS. If your injectors are emptying sooner, then the injection pressure is much less, the droplet size is bigger and the burn is slower. None of these things are good for EGT's or fuel consumption.And it is 100% correct that time to empty is paramount. And yes, the OEM nozzles WILL be spraying late on the stroke attempting to accomplish the same task as the Extrude Honed ones I run, 100% chance.
For a stock nozzle to empty my injector it takes over 5ms, and they still aren't empty. In 4ms they will clear 180mm^3. Whereas my nozzles will 100% empty 250mm^3 in LESS than 4ms. So if you plan to empty my injectors (250mm^3) you'd better have something other than a stock nozzle on it (considering 4ms at 3k rpm is getting pretty dang late in the stroke)
Doesn't prove your point, I can lower my EGT's simply by pushing up boost. It doesn't mean my injectors have improved.I can produce 140% OEM output with no smoke and lower exhaust gas temperature than the OEM injector is producing at the lower power output.
BSFC is calculated from measured values. Not by basing assumptions off what your injectors are theoretically supposed to do.First of all, how does 428hp on 180mm^3 of fuel not mean better BSFC? I have never seen stock injectors make more than 300 in person and 340 I have only heard about The truck that made the 340 is running my exact same turbo, and more timing than me. Stock injectors inject ~150-155mm^3 of fuel per shot at full stroke.
428rwhp divided by 180mm^3 yields 2.37hp per cubic millimeter injected.
340rwhp divided by 150mm^3 yields 2.26hp per cubic millimeter injected.
Droplet size is bigger.......from and orifice of .006" to something LESS than .007" I don't think you can tell me that will effect droplet size, or more correctly, the surface area to volume ratio of the droplets a discernable amount. Injection pressure remains the same, it is not a fixed flow through the nozzle, it is a fixed pressure (assuming flow rates through other parts of the injector are not exceeded).
These are unit injectors. HEUI. Hydraulic Electronic Unit Injection. As long as flow is maintained throughout the hydraulic circuits within the injector, nozzle enlargements do not drop injection pressure. And I will assure you, that a change of less than 1 thousandth of an inch does not drop IP.
Does the dyno have the ability to measure fuel consumption at steady load?I also assumed that the horsepower output from a Dynojet 248 could be used. This is from having made pulls on it with periods exceeding 3 months at a time and the output from one such series of pulls was 402.4, 402.1 and 402.3...... with nearly a month between each pull.
You'll have to excuse me for assuming that to be an accurate device.