79jasper
Chickenhawk
lol
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Pintle Free Injectors
- Thread starter Timemachines
- Start date
Still waiting on the danish and coffee? Who's serving up in here?
Ummmm, I switched to beer and popcorn!
Apparently I did not need more coffee!
Gary?
Hey I am elbow deep inna batch of chickin/n dumplins' ya'll keep postin I need reading materials!
Timemachines
Full Access Member
Sounds like you guys cant fire up some brain cells
Timemachines
Full Access Member
So your saying here that R&D are just blabbering. Anyone?
This is how I feel about injectors. Simply, the only way you are going to improve any code injector, is to open the orifice to flow more fuel, or cut the pintle out of the way. The stroke, without seriously modding things, is constant depending on shim stack and volume the pump is putting out at any given time. Now with that being said, you simply dont need to increase the flow because the fuel is getting through anyway, even with stock pintles... When we start breaking input shafts because the pump is flowing beyond what the injector will in the same amount of time, then its time to open up the orifice/cut the pintle, until then, it makes no difference, except for atomization, which is moot in an IDI anyway. Atomization for combustion, the part that makes the engine run happens post pre-chamber, and all atomization does within the pre-chamber, is either light the mix faster (more atomization) or slower (less atomization), both of which can be controlled by timing the pump accordingly. There is no proof that atomization from the injector itself does anything, there is a lot of people that say "YA, its SO much better" but I have a feeling that the plecebo effect is alive and well... There is no dyno numbers that prove anything, but I do see a lot of similar setups with different injectors making all about the same power... If you think about it, the IDI engine was developed because of this reason, low injection pressures and un-precise spray patterns could be used effectively... Thats why atomization makes such little difference...
This is how I feel about injectors. Simply, the only way you are going to improve any code injector, is to open the orifice to flow more fuel, or cut the pintle out of the way. The stroke, without seriously modding things, is constant depending on shim stack and volume the pump is putting out at any given time. Now with that being said, you simply dont need to increase the flow because the fuel is getting through anyway, even with stock pintles... When we start breaking input shafts because the pump is flowing beyond what the injector will in the same amount of time, then its time to open up the orifice/cut the pintle, until then, it makes no difference, except for atomization, which is moot in an IDI anyway. Atomization for combustion, the part that makes the engine run happens post pre-chamber, and all atomization does within the pre-chamber, is either light the mix faster (more atomization) or slower (less atomization), both of which can be controlled by timing the pump accordingly. There is no proof that atomization from the injector itself does anything, there is a lot of people that say "YA, its SO much better" but I have a feeling that the plecebo effect is alive and well... There is no dyno numbers that prove anything, but I do see a lot of similar setups with different injectors making all about the same power... If you think about it, the IDI engine was developed because of this reason, low injection pressures and un-precise spray patterns could be used effectively... Thats why atomization makes such little difference...
79jasper
Chickenhawk
Ask either Justin how they feel about dps now.
He screwed them on pumps.
Sent from my SM-G900R4 using Tapatalk
He screwed them on pumps.
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Black dawg
Registered User
I will say that for general running of the engine, even flow and spray pattern injector to injector, is more important than perfect spray pattern. I also think that good atomization is very important to cold starting and cold smoke.
Black dawg
Registered User
I will also say that the trimmed pintle injectors that I built for my truck, did feel a little stronger than before I trimmed them, but the difference ( at max stock db2 fuel level) wasnt enough to put up with the poorer atomization at lower lifts.
Black dawg
Registered User
Whole lot of worthless replies in this thread...he is just asking questions guys.
Timemachines
Full Access Member
Thank You yes i know they got beat i know the whole situation was ridiculous. all were trying to do here is make the 350-400hp range without all the BS they had to go through with it. Now, the question i would say now is, are theyre any injectors stock codes or aftermarket that allow more fuel flow and adequate atomization? or is it one or the other no best of both worlds?
Ok fine.
Why not stroke inj.????
I'm out!
Why not stroke inj.????
I'm out!
Black dawg
Registered User
I dont remember reading about any injectors being flow tested. Who got "beat"??
From my very crude testing methods, I found that g codes did flow more, but was a very small amount.....also the injector will flow what ever the pump pushes through it up to a point, and I dont think you will reach that point with a db2.
Conastogadiesel.com has them. All ya need is couple thousand plus bucks.
Black dawg
Registered User
What do you plan to use a 350-400hp idi for? It is stupid easy to get to that range with a BBF.
Timemachines
Full Access Member
what do i plan to use it for? drive it and say its a 400hp idi. that pretty much sums it up.
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