[CrewCabMax]

I'm new to the site, and new to powerstrokes in general. I here people talking about 160CC..180...200 CC injectors. My question is are those flow numbers per injector or are they the total CC's flowed over stock? I dont know if that makes sense or not, so i'll try to explain. For easy figuring lets say stock injectors flow 100 CC's, you modify all your injectors to flow 120 CC's. Now there flowing 20 CC over stock, times the 8 injectors, that would be an extra 160 CC's over stock. So would they be considered 120 CC injectors or 160CC injectors? Maybe i'm over thinking this COMPLETELY. Thanks for your help.

 

[gregrob]

160cc = 160cc total per injector which would equal 1280cc total if you wanted to think about it that way lol

and WELCOME to PSN!!! :ford:

 

[RockinJW]

The numbers you're reading is the cc per injector. So in your example, the injector would be a 120cc injector, which flows 20cc over stock.

Just for an FYI- a 99.5-03' stock powerstroke injector flows 140cc of fuel.

 

[CrewCabMax]

so basically i was overthinking things!

Joe

 

[CrewCabMax]

Thanks guys!

 

[roosterdiesel]

Actually when you see CC's they are talking about 1000 strokes. So a 160cc injector is 160mm^3 per single stroke....1000mm^3 for one cc that's why they take 1000 strokes.

 

[trick76cj5]

Another heads up:

94.5-97 run AA's which flow 90cc's and are a single shot injector.

Unless you have a 97 california emissions truck that runs AB's

99-99.5 trucks run an AB injector as well, these flow 120cc's and are split shot injectors.

99.5 till the end of the 7.3 ran AD injectors which flow 140cc's and they are split shot injectors.

International put out an high torque injector called an AC which flow 160cc's and are single shots.

Single shots just spray one pulse of fuel. They are more oil efficient than their split shot counterparts.

Split shots inject 2 seperate spray pulses. The first is a quick shot, this decreases emissions and lowers noise. They also like a lot of oil to run.

 

[daytondiesel]

so are B codes singles or split shot ?

if singles then why not run a BD injector, I read that they are 200cc
Jay

 

[trick76cj5]

Some B codes are singles, some are splits.

Yes, a lot of people run BD's, and they're rated for 240cc's stock (I'm one of those guys). The problem with B codes is they have a 6:1 injection ratio vs the 7:1 of the A codes first off, second off, they require a lot more oil to get the full 240cc's of fuel out, thirdly, they're more expensive than modded A codes.

Hybrids actually use the plunger and barrel out of a B code, this gives more cc's of fuel, but lowers the injection ratio even further to 5:1. But, injection ratio has been viewed as an unrealistic number. . .but that's a conversation for another forum. .. and a big can of worms.

 

[HotRodTractor]

B-codes can be either split or single depending on the model.

BDs for instance are single shots. Injector sizing also varies with the model, I think BDs are 230cc in stock form.

 

[69W900A]

The stock BD code also use the 5 hole nozzles. Proper timing is critical if you want to run the 5 hole nozzles IMO.

 

[daytondiesel]

Another heads up:

94.5-97 run AA's which flow 90cc's and are a single shot injector.

Unless you have a 97 california emissions truck that runs AB's

99-99.5 trucks run an AB injector as well, these flow 120cc's and are split shot injectors.

99.5 till the end of the 7.3 ran AD injectors which flow 140cc's and they are split shot injectors.

International put out an high torque injector called an AC which flow 160cc's and are single shots.

Single shots just spray one pulse of fuel. They are more oil efficient than their split shot counterparts.

Split shots inject 2 seperate spray pulses. The first is a quick shot, this decreases emissions and lowers noise. They also like a lot of oil to run.

We have a flow bench to clean and test injectors, but the numbers provided as max flow are not close to those stated in the quote posted. At what RPM, M/S and High Pressure are these numbers being done at. ie testing an AD RPM is 2600, M/S is 2.1 and High Pressure is 2000 you should have 65-75 cc of fuel per 1000 strokes.
Thanks
Jay

 

[DZL JIM]

Flow benches are great for balancing a set of injectors.
But the cc's given above are the max 'mathematical' flow numbers determined from the area of the Plungers over a given stroke (total volume in mm^3) emptying the entire injector over 1000 shots.
They can probably be confirmed with the right rpm, pw, and HPOil, but I don't know what those are...

 

[trick76cj5]

We have a flow bench to clean and test injectors, but the numbers provided as max flow are not close to those stated in the quote posted. At what RPM, M/S and High Pressure are these numbers being done at. ie testing an AD RPM is 2600, M/S is 2.1 and High Pressure is 2000 you should have 65-75 cc of fuel per 1000 strokes.
Thanks
Jay

yah, i think your pulse and oil pressure is a little low to get all the fuel out of the injector. I've heard that 4ms is needed to completely empty an injector, and that should be at 2750 or so psi on the oil side. RPM shouldn't matter with the displacent of the injector. . .rather pulse width and high pressure oil. So, at 1/2 the necessary pulse width and a little low on oil pressure you're getting about 1/2 of the mathematically calculated volume of the injector, it sounds just about right to me.

And thanks for providing some numbers to the forums, so many times we get so caught up in theory because the hard numbers are $$$ to come by.

 

[daytondiesel]

Flow benches are great for balancing a set of injectors.
But the cc's given above are the max 'mathematical' flow numbers determined from the area of the Plungers over a given stroke (total volume in mm^3) emptying the entire injector over 1000 shots.
They can probably be confirmed with the right rpm, pw, and HPOil, but I don't know what those are...

ok so the injector kits you sell are by mathmatical cc not actual cc. have you ever flowed the kits you sell to find out what they cc's do produce ?

Thanks
Jay

 

[trick76cj5]

ok so the injector kits you sell are by mathmatical cc not actual cc. have you ever flowed the kits you sell to find out what they cc's do produce ?

Thanks
Jay

Injectors were designed by an engineer that mathematically engineered the injector. The only thing that keeps the injector from displacing all the fuel is oil pressure and pulse width. There are limitations to both in our trucks, and points of diminishing returns, this is where larger nozzles come into play. There are a lot more variables that you are not taking into account in your testing. Not looking to create trouble w/you, but you need to be cautious when you call someone out on their information. . .gotta be sure you got your own straight.

Now, what would be cool. .. can you turn up that test stand of yours a little bit and get some flow numbers that would compare to a truck with a chip or programmer on it? Then we can all know how much fuel were getting. Now, something to consider when doing this is the injection pressure will actually be less, because you are injecting fuel in the cylinder close to TDC, so you are not injecting into an atmospheric condition, but rather injecting over a few thousand PSI of pressure. . .so the injection pressure and hence flow rate will actually be lower than what you will measure under the same injector conditions on the flow bench.

 

[mustang_gt_350]

We have a flow bench to clean and test injectors, but the numbers provided as max flow are not close to those stated in the quote posted. At what RPM, M/S and High Pressure are these numbers being done at. ie testing an AD RPM is 2600, M/S is 2.1 and High Pressure is 2000 you should have 65-75 cc of fuel per 1000 strokes.
Thanks
Jay

Awesome post... this just answered what i have been searching for over the last few months.
Do you own the shop that has the bench? or do you work there?

 

[daytondiesel]

Awesome post... this just answered what i have been searching for over the last few months.
Do you own the shop that has the bench? or do you work there?

I own the shop

Thanks
Jay

 

[Orezona]

I don't know if you saw the sticky but here is a very informative link to it http://powerstrokenation.com/forums/showthread.php?t=1077

 

[69W900A]

Now, something to consider when doing this is the injection pressure will actually be less, because you are injecting fuel in the cylinder close to TDC, so you are not injecting into an atmospheric condition, but rather injecting over a few thousand PSI of pressure. . .so the injection pressure and hence flow rate will actually be lower than what you will measure under the same injector conditions on the flow bench.

I understand what you are getting at here and you are correct to a degree. You are not injecting fuel into several thousand PSI but around 500 psi. The CP's don't get to 1000+ until AFTER the fuel is injected and starts burning which is what creates the CP to move the piston down and create power.

You should be able to set the stand up to do just about anything you wanted. Night need Big Oil if your test stand can't hold ICP