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Discussion Starter #1
I'm gonna go with 0.40 injectors cuz i have a bad #5 & 6 injector. My question is do or should i get just nozzles or the whole works? I just had my injectors replaced in July by GM. Thanks guys.
 

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Is your truck still under warrenty? I don't know anyone that sells the entire injector other than GM or Bosch. Also you are probibly going to need to replace the whole thing because the check ball inside the injector goes bad too.

I need a new set of injectors so I am going to have the dealer replace the whole set under warrenty again and then bring it home and immeditly swap in the new nozzels. Ask the tech that works on your truck if he will swap a set of nozzels in their for ya while he is doing em.

Bentley
 

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More than likely, with dual CP3s and a turbo strapped on, I'd say he'll have trouble getting warranty work on the injectors. ;) If not, tell me what dealership you go to, I'll go there when/if the time comes. :D


C-ya
 

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Putting in bigger injectors is a waste of time if you don't have the air and fuel supply. You need twin CP-3's and a lift pump is you don't already have them. You will also need to upgrade your turbo unless you plan to spray. Sounds to me like you need to watch where you get your fuel and probably double up on your filters. Injectors shouldn't go bad in that amount of time. I put in bigger injectors before I knew what the hell I was doing, (still don't know much but I'm a little smarter then I use to be:D ) and the fuel pressure dropped to about 13000psi at WOT which will get you no where. You would be a lot better off upgrading your air and fuel delivery and leave the big injectors for later.;)
 

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Discussion Starter #5
subman631;1559948; said:
Putting in bigger injectors is a waste of time if you don't have the air and fuel supply. You need twin CP-3's and a lift pump is you don't already have them. You will also need to upgrade your turbo unless you plan to spray. Sounds to me like you need to watch where you get your fuel and probably double up on your filters. Injectors shouldn't go bad in that amount of time. I put in bigger injectors before I knew what the hell I was doing, (still don't know much but I'm a little smarter then I use to be:D ) and the fuel pressure dropped to about 13000psi at WOT which will get you no where. You would be a lot better off upgrading your air and fuel delivery and leave the big injectors for later.;)
I've got duals, an a5k, and a fass 150
 

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Discussion Starter #6
With gm coming down hard on the dealerships up here in Maine I have no chance in hell of getting them warrantied.
 

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bogger;1559398; said:
I'm gonna go with 0.40 injectors cuz i have a bad #5 & 6 injector. My question is do or should i get just nozzles or the whole works? I just had my injectors replaced in July by GM. Thanks guys.
If you have bad injectors, odds are the problem is upstairs so swapping nozzles is not going to help you.
 

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bogger;1560023; said:
I've got duals, an a5k, and a fass 150
Sounds like you got what you need, get the bad injectors replaced by GM and keep your eyes open for a good used set on e-bay or here and then send your good injectors off for tips. Probably not a good idea to try and replace them (tips) yourself unless you have a lot of experience. I went with Don M of Formula 1 last time. I think he is on the cutting edge of injector technology. He build the injectors in Nasty Girl as well. You can reach him on here. Good luck.
 

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MDE is a supporting vendor here. I would PM him. Talking to him he can wet flow test em and all that fun stuff. Nice guy even if he dont drink beer ):h

There are a few other supporting vendors that sell stuff they get from other joints. John, TTS, ATS and a few others can get you sticks and they all support this site.
 

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ratlover;1560083; said:
MDE is a supporting vendor here. I would PM him. Talking to him he can wet flow test em and all that fun stuff. Nice guy even if he dont drink beer ):h
quote]

Hey ratlover, thanks but I had already 1200 miles on my a$$ and drinking beer after that that will passes me out :D, otherwise I had to drive an other 20 miles to the hotel. I don't like DUI's and had really luck at Christmas as I got pulled over and we was pretty lid up, the officer let me go ==> that was my wake up call.
You are welcome to come up to Lake Geneva for a good party (summer time) and we can drink a lot beer together.

Back to the facts: The LB7 don't have a nozzle proble, there is a Injector body problem where it leaks and can't provide the injection quantity which is needed to run the engine smooth. Get 2 new injectors and I hope my new LB7 nozzle are then reay when you are ready.

Good luck!!!!

Volker
 

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subman631;1559948; said:
Putting in bigger injectors is a waste of time if you don't have the air and fuel supply. You need twin CP-3's and a lift pump is you don't already have them. You will also need to upgrade your turbo unless you plan to spray. Sounds to me like you need to watch where you get your fuel and probably double up on your filters. Injectors shouldn't go bad in that amount of time. I put in bigger injectors before I knew what the hell I was doing, (still don't know much but I'm a little smarter then I use to be:D ) and the fuel pressure dropped to about 13000psi at WOT which will get you no where. You would be a lot better off upgrading your air and fuel delivery and leave the big injectors for later.;)
It's never a waste of time to change good flowing injectors.
2005 LLY, stock turbo, stock CP3, aftermarket intake and exhaust, lift pump and 10 hole nozzles = 528.7 RWHP / 1136.0 RWTQ , which is an increase of about 19HP and 95 LB/FT TQ. over the stock injectors and adjusted tune.
It every time depends what the owner of the truck will do. Nothing is waste of time other then waching TV and sleeping :D
 

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What size injector nozzles were in that truck that you just mentioned and it had to have some kind of an extra tune also didn't it? Would you still get o.k mileage with your injector nozzles if you keep the foot from hitting the floor? Isn't there a 7 hole spray in the stock nozzles? 10 hole has got to be nice. Thank's
 

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Z71 Grizzly;1561540; said:
What size injector nozzles were in that truck that you just mentioned and it had to have some kind of an extra tune also didn't it? Would you still get o.k mileage with your injector nozzles if you keep the foot from hitting the floor? Isn't there a 7 hole spray in the stock nozzles? 10 hole has got to be nice. Thank's
The nozzles are 29% over stock flow and has 10 holes evenly distributed on the nozzle tip. This is a special tune for towing and my nozzles, which is available by redline diesel in CA. The mpg is by 18 with the modification we had. If you just replace the nozzles and keep the stock tune you will get that:
http://www.dieselplace.com/forum/attachment.php?attachmentid=28337&d=1163262454
 

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Thank's. The part in your signature says 129% nozzles and wasn't sure how much of a nozzle you had or if you actually do have a 129% nozzle dumping it into the cylinder.
 

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Are the 120hp nozzles on your website the ones you were talking about or something else?
 

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Just razzing ya about the Ice Tea :)

You zap out the holes on blank tips and run more holes that are actually smaller right?
 

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Z71 Grizzly;1563030; said:
Are the 120hp nozzles on your website the ones you were talking about or something else?
No, in that test was just the 129% nozzles ==> 29% flow ~ 90 HP without any changes on fuel map.

ratlover;1563055; said:
Just razzing ya about the Ice Tea :)

You zap out the holes on blank tips and run more holes that are actually smaller right?
Yes, thats right, more holes + smaller holes = better atomisation

BTW: I wished I had some long island ice tea as the old drunk grandma began to flash :D :D :D
 

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Originally Posted by Z71 Grizzly
Are the 120hp nozzles on your website the ones you were talking about or something else?

No, in that test was just the 129% nozzles ==> 29% flow ~ 90 HP without any changes on fuel map.

So on the website the 90hp nozzles are the 129%? How do the 120hp ones do?
 

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Z71 Grizzly;1563796; said:
Originally Posted by Z71 Grizzly
Are the 120hp nozzles on your website the ones you were talking about or something else?

No, in that test was just the 129% nozzles ==> 29% flow ~ 90 HP without any changes on fuel map.

So on the website the 90hp nozzles are the 129%? How do the 120hp ones do?
Grizzly, it is basicaly wrong to name nozzles on HP. The 120 HP are 139% flow which means 39% more as the stock injector. I have them in house and need somebody to test them. I tested them already on my test bench and there are looking great.

Volker
 

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Thank's MDE
 
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