TheDieselPage.com Forums
 
The Diesel Page Forums

2019 - TDP's 23rd Anniversary
What's New | Feature Articles | Product Reviews | Member's Area | Free Forum Registration
Duramax 6600 Diesel Page | Advertiser's Section | Classified Ads | The Diesel Page - Publications


Go Back   TheDieselPage.com Forums > 2001-2019 Chevrolet & GMC 2500HD/3500 Light Trucks > Duramax 6600
Register FAQ Members List Photo Album Mark Forums Read

Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more.

Reply
 
Thread Tools Display Modes
  #1  
Old 08-16-2008, 09:10 AM
Mark Rinker's Avatar
Mark Rinker Mark Rinker is offline
Enthusiast
 
Join Date: Jun 2003
Posts: 5,813
Default Additional fuel filtration / injector replacement poll

Looking to hear from Duramax owners that have added additional fuel filtration capabilities to their trucks, and results (measured in miles) of service life on your injectors.

Very unscientific, but with a volume of good data, we may be able to see a trend line. Please include the following:
  1. Year/Make/Model truck
  2. Engine code (LB7, LLY, LBZ, LMM)
  3. Type of additional filtration added, and at what odometer reading
  4. History of injector replacement, if any, and at what odometer reading(s)
  5. Overall satisfaction with additional filtration - return on investment commentary
__________________
2011 Chevrolet Tahoe 5.3L daily driver
  • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
  • Total GM diesel miles to date : ~950K
Reply With Quote
  #2  
Old 08-17-2008, 05:29 AM
jbplock's Avatar
jbplock jbplock is offline
Moderator
 
Join Date: Mar 2000
Location: Owego, NY
Posts: 1,924
Smile

Mark, Great idea on this thread. My truck’s history is as follows:

1. Year/Make/Model truck
2003 Chevy Silverado 2500HD LT Crew Cab Short Box – currently at 82,000 miles. Except for being a little louder (fuel knock) the truck runs as it did when new. Mileage is 17-18mpg with mixed highway/city driving and 19-20mpg highway. Balance rates have increased but are still in spec. I’ve used Stanadyne Perfomance formula and a lubricity additive since the truck was new. First 30kmi was with with 4oz of 2-cycle oil/15 gal then switched to Stanadyne Lubricity Formula.

2. Engine code (LB7, LLY, LBZ, LMM)
LB7 Federal Emissions with no CAT or EGR

3. Type of additional filtration added, and at what odometer reading
- 6019 miles: Installed Kennedy Mega Filter (Baldwin BF7635), Post OEM connection
- 9428 miles: Installed AC EP158 Lift pump and Stanadyne FM100 30 micron pre-filter
OEM and Stanadyne filters have been changed at 10kmi. Mega filters were changed at 31,232 & 71,671 miles (currently at 82K).

Used filters are routinely cut open for inspection. Both Megas looked good with no visible discoloration. The Stanadyne will always have some black (asphaltene) discoloration but the OEM filters are relatively clear. The OEM’s are also fully uniform in color with no darkening on the bottom half (lift pump keeps the filter completely full - with stock suction system the filter is only partially full – see see Filter Council TSB )

4.
History of injector replacement, if any, and at what odometer reading(s)
Original Injectors

5. Overall satisfaction with additional filtration - return on investment commentary.

I'm happy with my setup. Based on the Southwest Research institute’s “High-Pressure Injection Fuel System Wear Study” (SAE doc 980869) I think added filtration for our HPCR injection system is good insurance against wear related injector failures (i.e. ball seat erosion) and should help extend IP life too. Quote from the paper:

“The Southwest Research Institute (SwRI) Fuel Filtration Cooperative Research Program evaluated the effects of abrasive fuel contamination in rotary injection pumps to establish a baseline for high-pressure injection systems. It was determined that the critical particle size for rotary injection fuel pump was 6 to 7 microns.”

From my simple way of thinking the more filtration the higher the efficiency of removing the critical wear particles. However I’m not sure it does much to prevent design related failures (cracked injector body).

Here's a related and very interesting article in MaxxTorque magazine:
THE Black, White and Greys of the Duramax Fuel Filter

For me it’s so-far-so-good at 82K on an 03 with about 1 year to go on the 7yr/200kmile injector special policy. Unless I have a problem before it expires, for peace of mind I’m thinking I’ll take the truck in and pay to have return rate test done. If the injectors fail out of warranty I’ll probably just change them out myself. It’s still cheaper than buying a new truck.
__________________
Bill
03 2500HD D/A CC/SB/4WD,OilGuard, MegaFilter,LiftPump/PreFilter, Bilsteins,RetraxRollTop,J&J Boards,Coolant Filter,AlliDeepPan,FastIdle,AllHeadLightsOn,
98 K3500 6.5,SOLD

Last edited by jbplock; 10-29-2008 at 03:52 PM.
Reply With Quote
  #3  
Old 08-17-2008, 06:03 AM
Idle_Chatter Idle_Chatter is offline
Enthusiast
 
Join Date: Jan 2001
Location: Blackfoot, ID, USA
Posts: 978
Default

1.Year/Make/Model truck

Late build 2001 Chevy Silverado extended cab short box 4x4 DMax/Allison

2.Engine code (LB7, LLY, LBZ, LMM)

LB7

3.Type of additional filtration added, and at what odometer reading

Kennedy Mega Filter installed post-OEM at 46,000 miles

4.History of injector replacement, if any, and at what odometer reading(s)

Zero, on factory originals at 158,000 miles

5.Overall satisfaction with additional filtration - return on investment commentary

Excellent product, long service life on filters and sometimes difficult to change after a long use interval (filter stuck to filter head).
__________________
Tom Ashley 2004 6.0 2500HD/Silverado CC/SB/4x4
Reply With Quote
  #4  
Old 10-29-2008, 10:31 AM
SoTxPollock SoTxPollock is offline
Enthusiast
 
Join Date: Dec 2004
Location: Texas
Posts: 681
Default

2002 Chevy Silverado LTCC, SB,

Added Racor RS60s filtration post OEM, at 20,000 miles.

Original injectors, 132,000 miles, they're not as quite as they used to be, but still run great.
Never had any kind of problems, starting, running etc. Love that truck.

ROI, supposedly the filtration is down to about 2 microns so I don't expect any problems from particle errosion. I'm sure this has already saved GM some money on replacement of the injectors, next year come July it will be my nickle if they go bad. I jus think its an investment in assurance of continued top performance. I've always maintained my vehicles like I was going to walk out of the house in the morning and drive straight to New York without haveing to check anything first.

Side note: By the way JBPLOCK, you said SWR said the wear was 6 to 7mm size, that's not millimeters obvously, you ment microns right?
__________________
02 2500HD LT D/A SB CC 4X4 BLACK, Westin stainless nerf bars, BW GN Hitch,Racor 60S post oem fuel filter, Oil Guard bypass engine oil Filter. All synthetic fluids. Kennedy boost valve, edge, Modified air intake,EGT & Boost digital gauge,TransferFlow combo fuel & tool box, Air Lift Suspesion Bags Rear & compressor with remote, Bilsteins front & rear, Frontier front replacement bumper.
Reply With Quote
  #5  
Old 10-29-2008, 03:51 PM
jbplock's Avatar
jbplock jbplock is offline
Moderator
 
Join Date: Mar 2000
Location: Owego, NY
Posts: 1,924
Default

Quote:
Originally Posted by SoTxPollock View Post

Side note: By the way JBPLOCK, you said SWR said the wear was 6 to 7mm size, that's not millimeters obviously, you meant microns right?
SoTx,

Yes thanks for catching this .. microns not mm (post has been edited)

Also ..
Quote:
Originally Posted by Idle_Chatter View Post

Kennedy Mega Filter installed post-OEM ....

... sometimes difficult to change after a long use interval (filter stuck to filter head).
Tom,
I also had a tough time breaking my first Mega Filter loose ... when installing the second one I removed the O-ring and coated it with some Parker Super O-lube (similar to silicone grease) .. When the time came to change, it came of with out any trouble ..

__________________
Bill
03 2500HD D/A CC/SB/4WD,OilGuard, MegaFilter,LiftPump/PreFilter, Bilsteins,RetraxRollTop,J&J Boards,Coolant Filter,AlliDeepPan,FastIdle,AllHeadLightsOn,
98 K3500 6.5,SOLD

Last edited by jbplock; 10-04-2009 at 03:39 PM.
Reply With Quote
  #6  
Old 12-15-2008, 01:52 PM
richp richp is offline
Enthusiast
 
Join Date: Mar 2000
Location: Geneva, IL
Posts: 319
Default Injector Report

Hi Gang,

1. Year/Make/Model truck - 2001 K-2500 Chevy Standard Cab

2. Engine code (LB7, LLY, LBZ, LMM) - LB7

3. Type of additional filtration added, and at what odometer reading - Universal Kit/150k

4. History of injector replacement, if any, and at what odometer reading(s) 1 set at 90k, second set at 165k

5. Overall satisfaction with additional filtration - return on investment commentary - too soon to know, since I was (yes, I'm very ashamed of myself here) tardy in getting the extra filtration on with the early sets of injectors. Have to say it gives me a lot more confidence for the future, though.

FWIW.

Rich Phillips
Member #17
Reply With Quote
  #7  
Old 12-29-2008, 09:58 AM
LanduytG LanduytG is offline
Supporting Vendor
 
Join Date: Mar 2000
Location: Greenfield, In
Posts: 1,407
Default

2004.5 LLY
My Universal Kit post OE when new
139300 with no injector issues
Change both filters every 10-12K miles.


Greg
__________________
Diesel Page Supporter
Greg Landuyt
Lubrication Specialist, LLC.
1-888-306 4255
greg@lubricationspecialist.com
http://www.lubricationspecialist.com
Reply With Quote
  #8  
Old 01-14-2009, 05:09 PM
hogbody hogbody is offline
Enthusiast
 
Join Date: Apr 2001
Location: San Marcos, TX
Posts: 122
Default

Year/Make/Model truck
2003 Chev. 2500 Silverado, LB7

Universal (Lubrication Specialist) 2 micron filter added pre OEM. Changed every 20,000. Added with about 20,000 miles on truck. OEM changed every 15,000.

Injectors replaced at 60,191 miles.

I was suprised to need replacement at this mileage. I buy my fuel from a reliable clean dealer and am meticulous with service. I was hoping to avoid the problem by adding the filter but I am glad the problem happened before the warranty was up.

I do not hesitate to recommend Chuck Nash Chev. in San Marcos, TX for their service on this warranty issue.
__________________
Former 2003 Chev. D/A CC, Snug Top shell, Prodigy, 2003 Arctic Fox 30U, Alternator mt. fuel filter.....basically stock truck.

2012 Ram Megacab 3500, Snug Top, same trailer, stock truck

GO DUCKS

GOD BLESS THOSE WHO PROTECT AND SERVE!
Reply With Quote
  #9  
Old 02-01-2009, 03:58 PM
mark g mark g is offline
Enthusiast
 
Join Date: Feb 2001
Location: hutto , texas, 78634
Posts: 130
Default

02 LB7 just turned 100k and just out of warranty. original injectors with no trouble.
stock fuel filter replaced every 15k. dealer replaced one under warranty.
love the truck!
__________________
02 d/a 4x4 crew sb 100k w/original injectors
84 m1028 34k
Reply With Quote
  #10  
Old 02-02-2009, 04:27 PM
Hillbilly Jim Hillbilly Jim is offline
Enthusiast
 
Join Date: Mar 2001
Location: Jefferson City, MO
Posts: 56
Default

Very early 2001 with 98,00 miles built in Nov of 2000
Extra filtration pre factory filter.
Pre filter added at 65000 miles
Orginal injectors. Filters changed at 15000 miles of use.
Reply With Quote
Reply

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 04:39 PM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 1996-2019 by TheDieselPage.com - All Rights Reserved