Best nozzle size for the street?

[windrunner408]

Well nate.... useless is a litte harsh

LOL LOL LOL sorry...

 

[MorganY]

considering you are maintaining pressure...100% nozzles. They clean up just fine with good ICP. < That is the key here. You need to see what ICP is doing BEFORE YOU BUY NOZZLES!!!!

If you aren't maintaining, you should drop down to a 75 or 50 percent nozzle. You'll gain more power from maximizing your injection pressure rather than having 1000psi low on on 100% nozzles. Right now I bet you are running pretty low, thats why it's smokey as hell.

http://www.youtube.com/watch?v=vgw5wVF-eCw

100% nozzle, 275cc capacity..clean..

 

[kyle43335]

205/50 are my favorite street injector

 

[smokedout250]

considering you are maintaining pressure...100% nozzles. They clean up just fine with good ICP. < That is the key here. You need to see what ICP is doing BEFORE YOU BUY NOZZLES!!!!

If you aren't maintaining, you should drop down to a 75 or 50 percent nozzle. You'll gain more power from maximizing your injection pressure rather than having 1000psi low on on 100% nozzles. Right now I bet you are running pretty low, thats why it's smokey as hell.

http://www.youtube.com/watch?v=vgw5wVF-eCw

100% nozzle, 275cc capacity..clean..

My icp is dropping I'll have to make sure how far. It's enuff that I want to change out the nozzle... I also don't like the haze of of the 150. I'm looking for a clean injector that can break 600hp fuel only and be capable of dding


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[smokinstroker]

If your only wanting 600, a 190 is more than sufficient and will help maintain icp. As well as having the added benefit of tune-ability and run much cooler.

A 205 is a rather large injector (you probably realize this, having them right now)

Understandably buying new injectors isn't as cost effective as swapping nozzles, I would still aim for a 75-100%

Agreeing with Morgan here. A data log and healthy pump will save you.

 

[MorganY]

My icp is dropping I'll have to make sure how far. It's enuff that I want to change out the nozzle... I also don't like the haze of of the 150. I'm looking for a clean injector that can break 600hp fuel only and be capable of dding


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You are probably around 3.3v sustained at WOT. Thats over a 10,000psi loss of injection pressure.

I have atomizing 275's and its pretty clean. 205's and a 75-50 nozzle would be your best choices depending on how low you actually are. 205's CAN maintain ICP with 100% nozzle if built correctly.

Your options besides starting over:

- Having your tuner lower pulse width
- Pull the shim under the spool valve if you have one
- Swap your nozzles

Can't switch out the internals. Micro clearances will be off and will cause pre-mature issues.

If your only wanting 600, a 190 is more than sufficient and will help maintain icp. As well as having the added benefit of tune-ability and run much cooler.

A 205 is a huge injector (you probably realize this, having them right now)

Understandably buying new injectors isn't as cost effective as swapping nozzles, I would still aim for a 75-100%

Agreeing with Morgan here. A data log and healthy pump will save you.

The issue doesn't lie with the pump. The ICP is dropping from a combination of the large nozzles, pulse width, and the internals being cut too much.

 

[smokedout250]

Okay, the reason behind the 205s was so I can one day down the road go to a compound setup.. Have a nice dd/play truck.. I want to say my icp is around 3.7-9 if I'm recalling it right I don't know it was high 3s. That's why I'm looking at doing a swap on nozzles


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[MorganY]

Okay, the reason behind the 205s was so I can one day down the road go to a compound setup.. Have a nice dd/play truck.. I want to say my icp is around 3.7-9 if I'm recalling it right I don't know it was high 3s. That's why I'm looking at doing a swap on nozzles


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205 is a great capacity. Its versatile. Just has to be built correctly. Are they shimmed? Whats pulse width?

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[smokedout250]

205 is a great capacity. Its versatile. Just has to be built correctly. Are they shimmed? Whats pulse width?

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They are warren injectors. I'm not positive on the specs on everything. Jesse told me him self he would step down to a 75% nozzle. I'm still learning on the in depth injector stuff. I'll try to data log tonight see if i can get my icp, pw..


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[Pizza pig]

ICP voltage

(PSI) (MPA) Voltage
0 0 .02v
200 1.5 .4v
400 3 0.73v
600 4 .96v
800 5.5 1.2v
1000 7 1.4v
1200 8 1.6v
1400 9.7 1.9v
1600 11 2.1v
1800 12.4 2.3v
2000 13.8 2.6v
2200 15.2 2.8v
2400 16.5 3v
2600 18 3.3v
2800 19.3 3.5v
3000 20.6 3.8v
3200 22 4v
3400 23.4 4.2
3600 24.8 4.3
3800 26.2 4.5
4000 27.5. 4.7v
4200 29.3 4.9v


Hellen Keller sent this?

 

[smokedout250]

ICP voltage

(PSI) (MPA) Voltage
0 0 .02v
200 1.5 .4v
400 3 0.73v
600 4 .96v
800 5.5 1.2v
1000 7 1.4v
1200 8 1.6v
1400 9.7 1.9v
1600 11 2.1v
1800 12.4 2.3v
2000 13.8 2.6v
2200 15.2 2.8v
2400 16.5 3v
2600 18 3.3v
2800 19.3 3.5v
3000 20.6 3.8v
3200 22 4v
3400 23.4 4.2
3600 24.8 4.3
3800 26.2 4.5
4000 27.5. 4.7v
4200 29.3 4.9v


Hellen Keller sent this?

So what is optimal? I know 3.8v which is what I was running last I checked isn't it.


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[Pizza pig]

Anything less that 3800 psi or 4.5v power will suffer


Hellen Keller sent this?

 

[peixinho]

My icp is dropping I'll have to make sure how far. It's enuff that I want to change out the nozzle... I also don't like the haze of of the 150. I'm looking for a clean injector that can break 600hp fuel only and be capable of dding


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People are breaking 600hp on 175/75... you would definitely be able to do that if you backed of to 75% nozzles.


Oh and to the other person... that is a very clean 285/100 truck. I hope to one day ride in a vehicle with compounds and big injectors! They seem awesome but no one around here has one

 

[Pizza pig]

Sure morgan you can clean up the fuel with a 76 lol


Hellen Keller sent this?

 

[Stroker04]

Not to pick on you... but this is something I have been thinking about a lot. Has anyone taken one set of injectors and added each nozzle size to see how it affects them.

Who is to say that 30% nozzles are not enough to empty the 205cc injector. I am not saying that you are wrong but where does all this info come from??? 1 year ago many said that a 175/stock injector you do nothing over a stock injector because the nozzles were not bigger. I personally made 533hp with just 68mm KC turbo, 175/stock, IDP tune, and exhaust. No other mods. It kept the gets really low and hardly smoked... but it hauled azz

I am just saying that I think the way of throwing 100 nozzles on 175cc injectors has past. I think we are learning more and more that we don't need giant injectors with giant nozzles to make descent power.


Now another thought is what does 30 50 75 and 100 means? Is it 30% bigger or flow 30% more???

Math is hard to do because we don't know how much bigger the nozzle needs to be. Does it need to be 30% bigger or flow 30% more for and injector that is 30% bigger?


Let theorize that stock nozzles on stock injectors have the perfect ratio

135/stock = perfect ratio

135 divided by 175 = 77% that means that 135s are 77 percent the size of of 175s or in other words 175s are 23% bigger than stock injectors.

So if it was a simple as saying that you need the nozzles to flow the exact amount more that the injector body is then the perfect ratio for 175s would be 23...


but we also need to take into account that we are not 100% sure that the 135/stock is the perfect ratio. Also we cannot assume that 30% nozzles actually flow 30% more fuel


With all that said... I still like the idea of a smaller nozzle on a bigger injector. Isnt adrian running like 225/75 and his giant stage 4 and 760+ hp setup still leaves a lot of fuel on the table. That means in my mind that 75 nozzles can handle a bigger body like 225s.

I can also tell you that with my current setup I am able to clean my injectors up to just about nothing. You cant even see the smoke out the rear view mirror with my 175/75... same nozzles size as adrian with 225/75 and he is making more power and left a lot of fuel on the table. At the end of the dyno video where he made over 760hp on 215/75 it was still smoking like crazy. meaning that 75 nozzles on a 175 injector might be just a little too big. Also it means that a 75 nozzle is able to dump a ton more fuel on a 225 than a 175... but is it dumping everything???


with all that blabbering... my math comes up with these as being good

175/23
190/29
205/35
215/50


205/30 could actually be a very good combo. How can you say it does not work if no one has tried it?

I agree, It's funny that you talk about a 205/30% because that's what is in my truck currently. No dyno numbers yet but I will have a compound kit on my doorstep by the end of the month. The low pressure with be an s475 and the high pressure will be a 62. I should have numbers early next year. If there isn't enough fuel I will be bumping the nozzle size up....

 

[peixinho]

I agree, It's funny that you talk about a 205/30% because that's what is in my truck currently. No dyno numbers yet but I will have a compound kit on my doorstep by the end of the month. The low pressure with be an s475 and the high pressure will be a 62. I should have numbers early next year. If there isn't enough fuel I will be bumping the nozzle size up....

Very Cool!!! I hope you do a write up on your results... How do the 205/30 run right now? What kind of turbo r u running?

 

[onebadcoastie]

Without flow benching, each mfg's nozzle size is about useless. "100%" over stock nozzles will really only dump about 50-60% more fuel over a stock nozzle at a given ICP and unlimited fuel for the PW being used. So this will kind of skew your math some but I get your point.

Nate makes an excellent point here. Sure the hole size may be a certain percentage larger than the stock holes but how does it actually correlate to the amount of fuel being moved? Without flow testing, the numbers are just that, numbers.

I agree, It's funny that you talk about a 205/30% because that's what is in my truck currently. No dyno numbers yet but I will have a compound kit on my doorstep by the end of the month. The low pressure with be an s475 and the high pressure will be a 62. I should have numbers early next year. If there isn't enough fuel I will be bumping the nozzle size up....

Guess that's a fmw for the 62. What turbine housing did you go with?

 

[Stroker04]

Very Cool!!! I hope you do a write up on your results... How do the 205/30 run right now? What kind of turbo r u running?

Guess that's a fmw for the 62. What turbine housing did you go with?

It runs very clean but Eric has a lot of fuel pulled back up top because I am still running the stock turbo. I plan on doing a build thread as soon as my pallet full of goodies comes in. Truck has a built 5r and PI converter from Twisted diesel already but I never really planned to go this route so it may need another build. If so I just plan on driving it down to MPD or taking it up to Andy at Warren Diesel. Yes Matt, and I believe it has an .80ar housing. I'm hoping it will be a nice little street setup, but like I said if there isn't enough fuel I can buy nozzles for about 300 bucks for all 8 so I'm not to worried about that. I figure someone will buy them up If I need to switch up my fueling side of things. The whole kit should be here by new year I hope.

 

[onebadcoastie]

I was curious cause I have a 62fmw with the .91 divided housing en route. There was discussion of the .83 t3 housing but I opted for the .91. Was just looking for your thoughts but you're not currently running it…not much for data available..lol…