questions on d max?
#22
12-30-2008, 01:31 PM
---AutoMerged DoublePost---
The 06 LLY,06 LBZ,07 LBZ, are much different than 04-05 LLY's. Below is the official release, but I'll sum up the big ones. Different block, pistons, rods, turbo, ecm (not just tuning), heads, and injectors.
The comprehensive list of changes and upgrades to the 2006 DURAMAX 6600 includes:
* Cylinder block casting and machining changes strengthen the bottom of the cylinder bores to support increased horsepower and torque
* Upgraded main bearing material increases durability
* Revised piston design helps lower compression ratio to 16.8:1 from 17.5:1
* Piston pin bore diameter increased for increased strength
* Connecting rod “ I ” section is thicker for increased strength
* Cylinder heads revised to accommodate lower compression and reduced cylinder firing pressure
* Maximum injection pressure increased from 23,000 psi to more than 26,000 psi
* Fuel delivered via higher-pressure pump, fuel rails, distribution lines and all-new, seven-hole fuel injectors
* Fuel injectors spray directly onto glow plugs, providing faster, better-quality starts and more complete cold-start combustion for reduced emissions
* Improved glow plugs heat up faster through an independent controller
* Revised variable-geometry turbocharger is aerodynamically more efficient to help deliver smooth and immediate response and lower emissions
* Air induction system re-tuned to enhance quietness
* EGR has larger cooler to bring more exhaust into the system
* First application of new, 32-bit E35 controller, which adjusts and compensates for the fuel flow to bolster efficiency and reduce emissions
Last edited by 94Matt; 12-30-2008 at 01:32 PM. Reason: Automerged Doublepost
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Sea97Stroker (01-03-2009)
#23
12-30-2008, 03:51 PM
The Duramax trucks are an all around well built truck. I love mine. I have a 3rd gen LBZ. They are very reliable and have hands down the strongest transmission from the factory. I pull a 38' 5th wheel alot.. generally at least once or twice a month. Each trip being over 300 Miles each way. Pulls it real good around 90 or so..
They duramax is the cheapest of the electronic controlled trucks to upgrade. Since the Allison trans holds better than most factory trans from Dodge or Ford. Its not hard to make 450-500 RWHP with a good programmer, shift kit and exhaust. Our stock airbox's are far superior to the others stock airboxes IMO.
The 1st Gen DMAX 01-04.5 (LB7) has the toughest pistons of the 4 models. Also had a wastegated turbo and 5 spd allisons. Some of the LB7's had injector issues, which were covered by a 200,000 mile warranty. And a some other LB7s had some minor overheating issues. Which there was a somewhat easy fix for.
The 2nd Gen DMAX 04.5-06 (LLY) is a great motor, and exactly the same as the 3rd gen (LBZ) with a slightly different tune in the ECM. The 3rd Gens were available with the ZF-6 or 6 spd Allison. Great Motors. As a matter of fact, there is a Land Speed Record set with an LLY that I believe had stock injectors and stock turbo. Ran 174 mph. The LLY's, often reffered to as a LiLLy, have a variable geometry turbo.
The 3rd Gen DMAX 06-07 (LBZ) is exactly like the LLY. They have little to no problems as of yet that I know of. Available with a 6 spd allison and a RARE handful with the ZF-6 manual trans. The main issue that I know some LBZ's had was some EGR system problems. Covered under factory warranty.
The 4th Generation DMAX 07.5- Current (LMM) is a great motor but has a DPF on the exhaust. Which of course is easy to get around these days.
All in all GM's Duramax is an excellent setup. I, of course, am biased. But with some good tuning, and an exhaust and shift kit.. you would be hard pressed to make 450rwhp out of any other trucks.
Alot of people dont like the IFS (Independent Front Suspension) for whatever reason. Truth be told, unless you do serious offroading, or just enjoy a rough ride, IFS is where its at. Sure, the tie rods can bend if you make over about 400 HP @ the tires, but there are some very inexpensive fixes for that. Tie Rod sleeves are readily available under $150. And several companies offer complete HD Tie Rods for a little more. There are several 1000+ RWHP Duramax trucks running them with no issues.
For more detailed information on the GM Diesels, check this link out>> https://www.dieselbombers.com/durama...tml#post182396
They duramax is the cheapest of the electronic controlled trucks to upgrade. Since the Allison trans holds better than most factory trans from Dodge or Ford. Its not hard to make 450-500 RWHP with a good programmer, shift kit and exhaust. Our stock airbox's are far superior to the others stock airboxes IMO.
The 1st Gen DMAX 01-04.5 (LB7) has the toughest pistons of the 4 models. Also had a wastegated turbo and 5 spd allisons. Some of the LB7's had injector issues, which were covered by a 200,000 mile warranty. And a some other LB7s had some minor overheating issues. Which there was a somewhat easy fix for.
The 2nd Gen DMAX 04.5-06 (LLY) is a great motor, and exactly the same as the 3rd gen (LBZ) with a slightly different tune in the ECM. The 3rd Gens were available with the ZF-6 or 6 spd Allison. Great Motors. As a matter of fact, there is a Land Speed Record set with an LLY that I believe had stock injectors and stock turbo. Ran 174 mph. The LLY's, often reffered to as a LiLLy, have a variable geometry turbo.
The 3rd Gen DMAX 06-07 (LBZ) is exactly like the LLY. They have little to no problems as of yet that I know of. Available with a 6 spd allison and a RARE handful with the ZF-6 manual trans. The main issue that I know some LBZ's had was some EGR system problems. Covered under factory warranty.
The 4th Generation DMAX 07.5- Current (LMM) is a great motor but has a DPF on the exhaust. Which of course is easy to get around these days.
All in all GM's Duramax is an excellent setup. I, of course, am biased. But with some good tuning, and an exhaust and shift kit.. you would be hard pressed to make 450rwhp out of any other trucks.
Alot of people dont like the IFS (Independent Front Suspension) for whatever reason. Truth be told, unless you do serious offroading, or just enjoy a rough ride, IFS is where its at. Sure, the tie rods can bend if you make over about 400 HP @ the tires, but there are some very inexpensive fixes for that. Tie Rod sleeves are readily available under $150. And several companies offer complete HD Tie Rods for a little more. There are several 1000+ RWHP Duramax trucks running them with no issues.
For more detailed information on the GM Diesels, check this link out>> https://www.dieselbombers.com/durama...tml#post182396
On your LBZ's you do have an occasional EGR go bad and the dealership should be replacing that with no questions asked.
#24
12-30-2008, 03:52 PM
#26
12-30-2008, 04:56 PM
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#28
12-30-2008, 06:58 PM
#29
12-30-2008, 07:19 PM
Diesel Enthusiast
My LLY duramax dually is my first diesel but its my second dually. I gotta say its got to be the best truck that ive ever owned. I pull a 25 ft gooseneck with between 6-7 tons evry other day roughly 150 miles a day give or take and havent had ANY problems with it. It rides hella of a lot better then my friends F450.
The only complaint that ive EVER had for any of my crew cab chevys is that the front seats dont go all the way down!
I plan on dumping my wifes 1500 CC for a Chevy 1/2 ton diesel when they come out.
The only complaint that ive EVER had for any of my crew cab chevys is that the front seats dont go all the way down!
I plan on dumping my wifes 1500 CC for a Chevy 1/2 ton diesel when they come out.
#30
12-30-2008, 07:20 PM
