Duramax Diesels Forum Truck of the Week
  #31  
Old 04-17-2016, 05:39 PM
motoking_1990's Avatar
motoking_1990 motoking_1990 is offline
Hotrodder
 
Join Date: May 2011
Location: Terre Haute, IN
Posts: 1,926
Default

Quote:
Originally Posted by Brent@LDS View Post
We sell both VCO and SAC nozzles as an option here.
I'm also curious about the nozzles. Do the bodies change from vco to sac? Or are the nozzles the only difference?

Sent from my SM-G920V using Tapatalk
__________________
2014 Chevrolet Cruze 2.0TD Loaded- Stock

2002 LB7 ec/sb

AFE Stage-2 Intake, mbrp intercooler pipes, PPE Boost Valve, EFI Live by duramaxtuner, p&p ihi w/wetzel wheel, bigger style intake horn, gmax 5 with precision tq, 5" MBRP Exhaust,beans sump, fass lift pump, 40% sticks, DP modded lbz cp3, Fuel Maverick w/ Nitto 420S

More fast stuff to come

GO FAST OR GET PASSED
Reply With Quote
  #32  
Old 04-17-2016, 06:24 PM
S Phinney's Avatar
S Phinney S Phinney is offline
Hotrodder
 
Join Date: Aug 2008
Location: Quncy, Fl
Posts: 3,795

Default

Nozzles are the difference.

Sent from my SM-G920V using Tapatalk
__________________
03 GMC 4x4 CC/SB Intake, Dual Exhaust, built motor by Me, Cognito Kryptonite Suspension upgrades, Custom Traction Bars by Me, Suncoast Trans, 1055-1 Convertor, Two AirDog II 200's, Billet Sump, Venom Tuning AKA Me, Custom Fabbed Fuel system, Flexlite Fans, Best Time to date 7.14 at 98.21 mph 1211.8HP 1954.5 FT/Lb torque
2013 LML Daily Driver, 5" FloPro Exhaust, Venom Tuning, Ad 165 4G Lift Pump, Upcoming HSP Billet Bridge And Piping, Upcoming CP3 Conversion
Reply With Quote
  #33  
Old 04-17-2016, 06:35 PM
motoking_1990's Avatar
motoking_1990 motoking_1990 is offline
Hotrodder
 
Join Date: May 2011
Location: Terre Haute, IN
Posts: 1,926
Default

Quote:
Originally Posted by S Phinney View Post
Nozzles are the difference.

Sent from my SM-G920V using Tapatalk
Thank you!

Sent from my SM-G920V using Tapatalk
__________________
2014 Chevrolet Cruze 2.0TD Loaded- Stock

2002 LB7 ec/sb

AFE Stage-2 Intake, mbrp intercooler pipes, PPE Boost Valve, EFI Live by duramaxtuner, p&p ihi w/wetzel wheel, bigger style intake horn, gmax 5 with precision tq, 5" MBRP Exhaust,beans sump, fass lift pump, 40% sticks, DP modded lbz cp3, Fuel Maverick w/ Nitto 420S

More fast stuff to come

GO FAST OR GET PASSED
Reply With Quote
  #34  
Old 04-17-2016, 10:49 PM
THEFERMANATOR's Avatar
THEFERMANATOR THEFERMANATOR is offline
LEGALLY INSANE
 
Join Date: Feb 2009
Location: ZEPHYRHILLS, FL
Posts: 3,564
Default

As posted the nozzles are the difference. Only the LB7 used VCO nozzles which stands for valve covering orifice, or in other words, the pintle valve in the injector actually seats against the orifice openings in the nozzle to close it off. SAC uses a seat just above the nozzle openings to seal against and has a small pocket below this seat where the fuel then goes out through the orifices. It should also be of note that the current SAC type nozzles are 8 hole instead of 7, so this is why they are all oversized. LLY+ all used SAC micro pocket nozzles stock, so this is basically updating the LB7 to the newer style injectors. The downfall of VCO nozzles is since the valve seats directly against the orifice openings, if any soot or anything gets pushed back into the orifices, or if any debris gets down into the nozzle, it can hang the valve open. Also since the SAC uses one seat VS 7 like the stock LB7 nozzles, you have a superior seat design with less places for it to leak by. I've wondered for awhile now why nobody hadn't tried going to a newer style nozzle on an LB7 injector, now we have them.
__________________
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

Reply With Quote
  #35  
Old 04-18-2016, 12:14 AM
motoking_1990's Avatar
motoking_1990 motoking_1990 is offline
Hotrodder
 
Join Date: May 2011
Location: Terre Haute, IN
Posts: 1,926
Default

That's very helpful. Thanks for the information Ferm. How long have the sac nozzles been available for lb7? Is this something recent?

I ask because 45% were put in my truck before I bought it. I'm curious if there is a possibility sac nozzles are in there. A lot of work just to see. It will have to wait for the engine build.

Sent from my SM-G920V using Tapatalk
__________________
2014 Chevrolet Cruze 2.0TD Loaded- Stock

2002 LB7 ec/sb

AFE Stage-2 Intake, mbrp intercooler pipes, PPE Boost Valve, EFI Live by duramaxtuner, p&p ihi w/wetzel wheel, bigger style intake horn, gmax 5 with precision tq, 5" MBRP Exhaust,beans sump, fass lift pump, 40% sticks, DP modded lbz cp3, Fuel Maverick w/ Nitto 420S

More fast stuff to come

GO FAST OR GET PASSED
Reply With Quote
  #36  
Old 04-18-2016, 07:21 AM
Brent@LDS's Avatar
Brent@LDS Brent@LDS is offline
Vendor
 
Join Date: Aug 2011
Location: Wisconsin
Posts: 454
Default

Quote:
Originally Posted by motoking_1990 View Post
That's very helpful. Thanks for the information Ferm. How long have the sac nozzles been available for lb7? Is this something recent?

I ask because 45% were put in my truck before I bought it. I'm curious if there is a possibility sac nozzles are in there. A lot of work just to see. It will have to wait for the engine build.

Sent from my SM-G920V using Tapatalk
The SAC nozzles for the LB7 injectors have been out for around 2 years or so.
__________________
Looking for LB7 Injectors?
Check these prices out!....
......... Lincoln Diesel Specialties .........
Phone: 920-361-7700
Reply With Quote
  #37  
Old 04-18-2016, 09:15 AM
Mpsoldier's Avatar
Mpsoldier Mpsoldier is offline
That just happened!
 
Join Date: Mar 2010
Location: In my House
Posts: 640

Default

Has there been proven life expectancy over the voc nozzles? I understand the design is a lot better and has been proven in the current year trucks. Just seeing if the nozzle design is going to help or if the bodies are still going to fail in a short period of time compared to current years.
Reply With Quote
  #38  
Old 04-18-2016, 09:26 AM
DAVe3283's Avatar
DAVe3283 DAVe3283 is offline
Heavy & Slow



 
Join Date: Sep 2009
Location: Boise, ID, USA
Posts: 2,776

Default

Quote:
Originally Posted by Mpsoldier View Post
Has there been proven life expectancy over the voc nozzles? I understand the design is a lot better and has been proven in the current year trucks. Just seeing if the nozzle design is going to help or if the bodies are still going to fail in a short period of time compared to current years.
It hasn't been proven...yet. But that is why I started this thread

I am going to log the balance rates, miles, hours, and subjective state of the injectors from now until something goes wrong. That way there will be some solid data on the SAC-style injectors out there for the LB7 guys.
__________________

Reply With Quote
  #39  
Old 04-18-2016, 09:49 AM
IOWA LLY's Avatar
IOWA LLY IOWA LLY is offline
Yes, its really me
 
Join Date: Feb 2007
Posts: 2,262
Default

Cool thread. And great idea keeping track of everything. Thanks for the effort!

Sent from my SM-N920V using Tapatalk
__________________
2003 GMC CCSB LLY
Built by me, tuned by me.

2009 ECI Diesel Truck Points Champion
2010 ECI Diesel Truck Points Champion
2011 ECI Diesel Truck Points Champion
2012 ECI Diesel Truck Points Champion

Big thanks to everyone who helps me.

Best 1/8th, 7.29, 98.6MPH (Street tires, fuel only, single Journal bearing GT42 charger) (2010)

Best 1/8th, 6.93, 104.24MPH (Street tires, fuel only, single HX60 turbo) (2016)

Best 1/8th, 6.60, 106.6MPH (Street tires, fuel only, single HX60 turbo) (2017)
Reply With Quote
  #40  
Old 04-18-2016, 10:42 AM
THEFERMANATOR's Avatar
THEFERMANATOR THEFERMANATOR is offline
LEGALLY INSANE
 
Join Date: Feb 2009
Location: ZEPHYRHILLS, FL
Posts: 3,564
Default

Quote:
Originally Posted by Mpsoldier View Post
Has there been proven life expectancy over the voc nozzles? I understand the design is a lot better and has been proven in the current year trucks. Just seeing if the nozzle design is going to help or if the bodies are still going to fail in a short period of time compared to current years.
Haven't heard of that many body failures myself except for guys running 200mpa+ for rail pressure. The SAC design should help cut down on hazing, nozzle dribble from not fully seating pintle's, and most any other nozzle problems. Unfortunately it doesn't do anything for ball seat erosion, but that hasn't been much of a problem since the revised ball seats came out in 09. Only time will tell, and they just haven't been out that long for the LB7. I foresee future problems similiar to those of the LLY+ now that the SAC design should take care of any nozzle problems, so I would expect to see problems of high return rates if you have problems.
__________________
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

Reply With Quote
  #41  
Old 04-18-2016, 11:46 AM
Awenta's Avatar
Awenta Awenta is offline
Hotrodder
 
Join Date: Sep 2014
Location: CT
Posts: 4,076
Default

Injectors will always fail.

Sent from my SM-N910V using Tapatalk
__________________
Arek

2003 CCSB LT LB7 deleted

Some cool stuff, some fast stuff, some slow stuff
EFI by Kory

Special thanks to Evan@Limitless
Reply With Quote
  #42  
Old 04-18-2016, 12:07 PM
OregonDMAX's Avatar
OregonDMAX OregonDMAX is offline
NOT IN OREGON
 
Join Date: Apr 2013
Location: Goodyear, AZ
Posts: 3,627

Default

Quote:
Originally Posted by Brent@LDS View Post
The SAC nozzles for the LB7 injectors have been out for around 2 years or so.
Is that what you put on all your injectors now or is that an option when ordering...

And unless I misread that is only available on oversize injectors
__________________
Sean
02 CCSB
Moonshine tunes, Mike L trans
Mike L secret squirrel converter
Exergy Sportsman, 4/6 drop, LML 20's/420's
Reply With Quote
  #43  
Old 04-18-2016, 02:02 PM
Mpsoldier's Avatar
Mpsoldier Mpsoldier is offline
That just happened!
 
Join Date: Mar 2010
Location: In my House
Posts: 640

Default

Quote:
Originally Posted by THEFERMANATOR View Post
Haven't heard of that many body failures myself except for guys running 200mpa+ for rail pressure. The SAC design should help cut down on hazing, nozzle dribble from not fully seating pintle's, and most any other nozzle problems. Unfortunately it doesn't do anything for ball seat erosion, but that hasn't been much of a problem since the revised ball seats came out in 09. Only time will tell, and they just haven't been out that long for the LB7. I foresee future problems similiar to those of the LLY+ now that the SAC design should take care of any nozzle problems, so I would expect to see problems of high return rates if you have problems.
good to know appreciate the thread always enjoy learning.
Reply With Quote
  #44  
Old 04-18-2016, 04:44 PM
aldenrichie's Avatar
aldenrichie aldenrichie is offline
Hotrodder
 
Join Date: Dec 2015
Location: Lake Charles, LA
Posts: 105

Default

Quote:
Originally Posted by OregonDMAX View Post
Is that what you put on all your injectors now or is that an option when ordering...

And unless I misread that is only available on oversize injectors
The Sac nozzles are an option and I believe they start at 45%

Sent from my SM-N910P using Tapatalk
__________________
2004 LB7 CCSB

profab turbo horn
PPE boost valve
Banks Ram Air w/scoop
dsp5 w/ efi Live tune
stock trans(for now)
stock everything else at 180k miles
Reply With Quote
  #45  
Old 04-18-2016, 07:03 PM
Brent@LDS's Avatar
Brent@LDS Brent@LDS is offline
Vendor
 
Join Date: Aug 2011
Location: Wisconsin
Posts: 454
Default

Quote:
Originally Posted by OregonDMAX View Post
Is that what you put on all your injectors now or is that an option when ordering...

And unless I misread that is only available on oversize injectors
We carry and offer both the VCO and SAC nozzles on our injectors here.
__________________
Looking for LB7 Injectors?
Check these prices out!....
......... Lincoln Diesel Specialties .........
Phone: 920-361-7700
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 02:51 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
vB.Sponsors