Right out of the box, the LBZ produced hp and lb-ft of torque. The LBZ was also the first Duramax to be coupled to the six-speed Allison automatic, which proved capable of handling more power than the five-speed version that preceded it. In a classic case of not knowing what they had until it was gone, diesel enthusiasts longingly remember the LBZ as the last Duramax built before the modern day emissions crunch kicked in, which spawned pollution control technology that reduced fuel economy and greatly hampered long-term engine durability.
Taller main bearing caps and 4mm deeper bores for the main cap bolts were also employed. To make way for the deeper main bolt holes, the main and cam bearing oil feed holes were made 2mm smaller with no detrimental effect on engine cooling or long-term operation.
Minor alterations were made to the crankshaft as well, along with the use of a different reluctor wheel. Naturally, the beefier I-beam style rods bring more mass to the rotating assembly 1, grams apiece vs. The pistons are another story. The cast-aluminum pistons are highly susceptible to cracking when higher power levels are seen. Most failures occur in engines saddled with larger injectors and that have been graced with a larger turbo or even compounds. As is shown in the photo above, almost all pistons crack along the center line of the wrist pin beneath it.
This adds weight to the theory that quality control issues existed during the piston casting process. GM is rumored to have switched production plants midway through LBZ production and that the new foundry experienced inconsistencies with its metallurgy, which had devastating consequences to those that chose to modify their trucks, and even for some that left them completely stock.
In the image above, a thicker, LB7 wrist pin has been installed in a Mahle cast-aluminum replacement piston bound for a cylinder in a rebuilt LBZ. To the left of it, a factory LBZ wrist pin is shown. One of the ways GM was able to up the horsepower and torque ante over the LLY came in the form of cranking up the pressure of the common-rail system.
For the LBZ, maximum pressure in the injection system was increased to 26, psi vs. The job of creating that pressure was again left up to the Bosch CP3. Complementing the higher-pressure CP3 were new fuel rails and improved injectors. Still supplied by Bosch and still of a solenoid-style design, the injectors remained accessible from outside the valve covers on the LBZ.
Instead of bottlenecking airflow into the compressor side of the turbocharger like what had been done on the LLY, the LBZ came with a much larger turbo inlet manifold. This means the larger diameter pipe and smoother transition provide considerably cooler intake and exhaust temps for the engine, not to mention that it improved responsiveness.A MUST HAVE DURAMAX ENGINE MOD - Best OIL for DURAMAX
Fairly similar to what many 6. It happens when corrosion and carbon accumulation cause the unison ring the piece within the exhaust housing that moves all of the vanes in unison to seize in place or not allow full travel. Either scenario leads to poor drivability and, while the turbo can sometimes un-stick itself under spirited driving, the most cost-effective way to solve the problem is to remove the turbo, pull it apart and have it cleaned.
Once cavitation sets in on higher-mileage engines, the plastic impellers are more prone to damage and failure, too. However, having said that, most plastic impeller water pumps still manage to last betweenandmiles.Bachmann g scale parts
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Duramax History, Lesson 3: LBZ
Higher Pressure One of the ways GM was able to up the horsepower and torque ante over the LLY came in the form of cranking up the pressure of the common-rail system. New Injectors Complementing the higher-pressure CP3 were new fuel rails and improved injectors. Larger Turbo Inlet Manifold Instead of bottlenecking airflow into the compressor side of the turbocharger like what had been done on the LLY, the LBZ came with a much larger turbo inlet manifold.
Sticking Turbos Fairly similar to what many 6.4l60e oil pump install
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Duramax History, Lesson 1: LB7.Due to the global Covid pandemic, current stock levels fluctuate daily. Disclaimer: We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections. A simple way to drain your oil. Now comes with safety clip and nipple seal at no extra charge! Installs as easy as the drain plug for no fuss and no m I heard of this product before and I finally found it here.
Much easier!! And no mess. Was this review helpful? Yes No. Yes 1 No.The Duramax is a General Motors V8 diesel engine for trucks.
The 6. To assure optimum performance form any DMAX engine, you need some heavy-duty oil that provides both protection and lubrication at the same time.Wedding mujra videos
In this article, I present you with the five-best oil solutions for your Duramax engine, each one is a great solution for a specific application, and all work perfectly well in any State and across all the States of America. This is an improved API CJ-4 synthetic engine formula that significantly increases protection from older generation oils. This is a low ash formulaso it has excellent emission system compatibility and delivers excellent shear stability.
Mobil 1 0W is a proprietary combination of high-performance synthetic ingredients that go beyond the OEM requirements. This 0W oil has a But then what do you expect from Mobil.
This amazing oil provides enhanced frictional properties and delivers a wide temperature range of performance levels that delivers excellent engine performance and protection for all weather and road conditions. This is one of the more popular brands that is used by millions of truck owners around the world and is designed to perform in the cold wastes of Siberia to the hot sweltering deserts of Yemen.
This is the one for heavy duty workloads and long hauls, it is proven to provide extreme temperature performance, and as such is used in the far reaches of Alaska as well as the hot long hauls of Florida, Texas, and Louisiana.
Liqui Moly Premium 5W is a synthetic, high-performance, low-friction engine oil engineered specifically for gasoline and diesel engines with multi-valve and turbocharging technology.
The Liqui Moly is a performance oil for all-season use. This synthetic maintains a clean engine for longer service intervals and is specifically designed for heavy-duty commercial use. You get fast ignitions and a rapid oil delivery at low temperatures, and it meets a high range of temperature performance levels, operating exceedingly well in the low ranges and extending its performance all the way up to overheated engines.
The ingredient mix delivers a very high shear and aging stability while providing yours with outstanding engine cleanliness. The smooth engine running characteristics includes a reduction in fuel consumption and pollutant emissions, together with optimized oil pressure at all engine speeds. You can use this oil safely in systems that have a catalytic converter, and this oil stands out in turbocharger engine performance.
This is a Mobil oil, which is all I need to say. What you get here is an extended oil drain interval ODI with 1. With 50 percent more wear protection and outstanding oxidation stability, you get an oil that delivers excellent soot and viscosity control which is confirmed to meet all API CK-4 requirements.
So, what is so special about this oil, well, it works with all the latest engine brands that are equipped with after-treatment systems and EGR. It also works extremely well with older and naturally aspirated conventional designs.Engine oil is exposed to extreme conditions, being used as both a lubricant and coolant inside the engine.
Exposure to extreme pressure, heat, and contaminants such as exhaust soot and diesel fuel degrade its chemical and mechanical properties, necessitating frequent oil changes. Engine oil should be replaced every 10, miles or as indicated by the instrument cluster display. Frequent towing, idling, and severe climate driving will necessitate more frequent service.
There is no reason nor excuse not to use a full synthetic motor oil. Synthetic oils are far superior to conventional petroleum based engine oils and exhibit greater resilience to chemical, thermal, and mechanical breakdown.
We highly recommend Amsoil's line of full synthetic, diesel specific engine oils for all Duramax diesels. SAE 10W is listed as an acceptable alternative for certain model year trucks, however it is not advised nor recommended.
We also recommend changing the drain plug every few oil changes as the seal tends to degrade with age. We highly recommend Amsoil Heavy Duty 15W full synthetic engine oil for all Duramax diesel applications, or Amsoil Heavy Duty 5W full synthetic engine oil for cold weather operation.
Do not break the drain plug loose using an open end wrench. Drain plug head sizes will vary. If the seal is compromised, replace the drain plug o-ring or install a new drain plug. If the filter is stubborn, use an oil filter wrench or wrap a piece of sandpaper around the circumference of the filter to prevent your hand from slipping. However, if desired, you may "wet" the filter with clean motor oil so it is not entirely dry when installed.
Do not use a wrench to tighten down the new filter, simply install it as tight as possible by hand. If the canister is slick, use a piece of sandpaper wrapped around the circumference to gain traction. Duramax Engine Oil Selection There is no reason nor excuse not to use a full synthetic motor oil. Listed as acceptable for certain model years - not preferred nor advised under any conditions.Check filter condition every oil change and replace as necessary; replace at 45, miles regardless.
GM advises that the ZF S 6 speed manual transmission does not require service. To maintain shift quality and promote transmission life, consider replacing fluid at 60, mile intervals, especially if usage meets any of the severe duty conditions. Service interval not provided by GM, routine service may promote longevity. Fluid level should be checked periodically. Drain and replace differential fluid immediately if the axle is submerged in water.
ACDelco LGates ACDelco XGates GMDayco Glow plugs are not interchangeable with all model years. See: Duramax engine models by VIN number  to model year engines use a dual thermostat system, 1 front and 1 rear mounted thermostat. Note - fluid capacities are nominal; always fill to proper level as indicated by dipstick, to the bottom of the fill plug, etc. The fluid capacities listed herein are measured in U. Always verify fluid specifications and capacities in your owners manual, if applicable.
Replace transfer case fluid - 50, miles - 97, miles normal conditions 22, miles severe duty conditions Replace front differential fluid 4x4 Service interval not provided by GM, routine service may promote longevity. Replace rear differential fluid Service interval not provided by GM, routine service may promote longevity.
ACDelco PF ACDelco TP ACDelco Camshaft position sensor CPS.The LB7 Duramax was incredibly impressive for its time. Our 6.
We give you service schedules for normal and severe use, fluid capacities, and a complete list of recommended filters, engine oils, and fluids to use. If you have a different type of Duramax, check out our other maintenance guides. If you just bought an LB7 Duramax, I strongly recommend performing a thorough maintenance and covering all of your bases. Whenever I buy a truck, I replace all the fluids, filters, and engine oil as soon as possible.
Down below are two charts explaining what services need to be completed at certain intervals. There are two different maintenance intervals you can follow with your LB7 Duramax. Which one you follow depends on how you use your truck.
Read the short paragraphs for each chart to determine if that is the proper LB7 Duramax maintenance schedule for you to follow. The normal conditions maintenance scheduled should be followed by most people.
If you tow or idle frequently, you need to follow the severe conditions LB7 Maintenance schedule. This is especially important if you tow heavy loads. Heavy towing can take a big toll on your LB7 Duramax. If you are often in dirty or dusty conditions, keep an eye on your air filter.
It will need to be changed more frequently too. Not all fluids are created equal though. Click on one of the affiliate links in the chart to find that product on Amazon.
6.6L Duramax Diesel Oil Change Guide
Visit our other LB7 Duramax resources and informational articles. Click on one of the links listed below. This helps support Diesel Resource and allows us to continue to produce helpful diesel insight and content. Thank you for the support! Want to learn more about the latest insights in the diesel industry? Signup for our newsletter and stay up to date on the top trending topics! Founder of Diesel Resource and a complete diesel head. Has a little bit of problem buying too many trucks.
Learn more about him by checking out his truck. Help Us Get to 1,! Written by Kamil February 5th, Maintenance Intervals — Normal Conditions The normal conditions maintenance scheduled should be followed by most people.
Consider replacing air filter everymiles. If you frequently drive in dusty conditions you may need to change your air filter more often.Tabulations are organized by topic and each page contains an explanation of what the files contain. White papers and special projects related to immigration which may expand upon concepts in core reporting or topics of special interest to stakeholders. Citizenship and Immigration Services library was created in 1987 as part of the legacy Immigration and Naturalization Service (INS) History Office.
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