Remanufacturing a GM 6.2L Diesel engine involves many steps and manipulation of certain components to complete the process. Below you'll see the components that are contained within the engine and how those components are handled by us during the remanufacturing process. Think of them as the steps towards a quality engine.
| Engine Block/Case |
|
||||||||||||||||||
 |
The rebuilding process starts at the bare cylinder block/case. Every engine is stripped down to the bare block to examine it carefully to determine whether or not it will be suitable for rebuilding.
|
||||||||||||||||||
| Crankshaft |
|
||||||||||||
|
The Crankshaft of any engine is one of the primary components of the engine's internal rotating assembly. Currently, only Standard Diameter crankshafts are being used due to the risk to the crankshaft rigidity during resizing of the journals.
|
||||||||||||
| Camshaft & Lifters |
|
||||||||||||
 
|
The Camshaft and related lifters are also serviced as part of the rebuilding process. Remanufactured lifters are used and a used but checked roller cam is used.
|
||||||||||||
| Rockers & Pushrods |
|
||||||||||||
 
|
Besides the Cam and Lifters, another component of the valve-train consists of the Rocker Arm Assemblies and the Pushrods.
|
||||||||||||
| Connecting Rods |
|
||||||
|
The connecting rods of the engine are extensively remanufactured, further than many machine shops do.
|
||||||
| Cylinder Heads |
|
||||||||||||
|
The Cylinder Heads are an important component of any engine as they are the "lungs" of the engine. Cylinder head performance is critical, maintaining that performance starts at a quality remanufactured cylinder head.
|
||||||||||||
| Bolt On Items |
|
||||||
|
Many items are checked and re-used with a remanufactured engine, they're listed below.
|
||||||
| New Internals |
|
||||||||||||||||||||||||||||||||||||
  
|
Below you'll see the components that simply get replaced in every remanufactured engine and what components we prefer to use to ensure you're getting a quality engine.
|
||||||||||||||||||||||||||||||||||||
| Engine Assembly |
|
||||||
|
After final machining processes have been completed and components used in the engine have been inspected the engine is then assembled, and various things are checked and performed during assembly.
|
||||||
|
|
Upgrades & Options |
|
|
Beyond the OEM oriented rebuild offered above several upgrades and options are available. Many of the upgrades and options offered below are geared at either improving the overall durability of the engine or to improve power output, and in many cases both. The Diesel Depot offers more upgrades and options than any other rebuilder that specializes in the 6.2L engine! |
||
| Balancing |
|
||||||||||||
|
A true balancing of the rotating assembly is a highly recommended upgrade for any engine, and the 6.2L can take special advantage of this procedure. The Balancing is completed using a Multi-Bal 3000 balancer that uses computer software to analyze the crankshaft with calibrated bob weights. The Bob weights are used to simulate the same weight as the other components of the rotating assembly.
In Order to complete the balancing the majority of the engine's rotating assembly components must be modified.
With Every balance a new harmonic balancer and flexplate are used to be calibrated with the complete rotating assembly, because the 6.2L is externally balanced as well. Customer may also supply their own good flexplate or flywheel that will be used with the engine build. |
||||||||||||
| Cyl. Head Porting |
|
||||||
|
Cylinder Head Porting and Gasket Matching can be an added edge towards improving power output of the 6.2L. Removing unnecessary material from both the intake and exhaust ports of the cylinder heads helps airflow into and out of the engine. By increasing air volume through the engine, the overall potential for increased power output is improved. Depending on the need, a gasket/port match, port blend, or full porting may be peformed.
* The intake manifold and exhaust manifolds can also be modified to complete the upgrade. |
||||||
| 6.5L Head Upgrade |
|
||||||
|
|
The addition of 6.5L Turbo Diesel Cylinder heads may also be substituted onto any 6.2L engine build. By using 6.5L cylinder heads allows the 6.2L engine to take advantage of factory Turbo manifolds, and larger pre-cup options, and a more efficient injector angle. Besides the differences in the physical head, the head gasket also differs from the 6.2L gasket, the 6.5L gasket is a stronger and reinforced gasket for turbo usage.
|
||||||
| Lower Compression Ratio |
|
||||||||||||
|
Lowering the effective compression ratio of the 6.2 engine is a method of increasing durability of the engine while running at higher than designed power levels. There are many different ways of lowering the compression ratio of an engine. The method used here is by reducing the piston's height. The only disadvantage to this modification is cold starting ability, which can be overcome with either intake heaters, quick heat glow plugs, or extended glow and afterglow times.
*The 19:1 Compression ratio is the common accepted "marine" lowered compression ratio for a 6.2L. Please ask for advice about other compression ratios if they are desired. |
||||||||||||
| ARP Head Studs |
|
||||||
|
ARP's head studs provide greater clamping force between the block and the cylinder head and are a performance oriented upgrade. The studs replace the factory Torque To Yield head bolts.
|
||||||
| Ceramic Coatings |
|
||||||||||||
 
|
High Temperature Ceramic Coatings can be applied to a number of components that are subjected to the extreme temperatures associated with engine combustion. The coating is designed to reflect heat away from the component that it is applied to, thus providing a protective layer for the component.
Most of the uses of ceramics are for the protection of the engine components to help them resist the heat that can destroy them. In some instances, ceramics can also be applied to protect external components such as exhaust manifolds and headers against rust, and insulate heat away from the engine.
|
||||||||||||
| Bal. Rocker Arms |
|
||||||
|
|
Balanced Rocker Arms for the 6.2L are a custom modification that consists of selecting rocker arms out of a selection of normally usable rockers to find a balanced set. The rocker arms are measured for wear using a unique technique in the areas that affect the geometry of the rocker arm to find a closely matched set. The assembly is then re-assembled using new GM nylon rocker arm retainers on a freshly polished rocker arm shaft. This update/upgrade can be used to replace the previous cast iron rocker arms used in early 6.2L engines.
* Pushrods can also be precisely measured for length to complete the matched set. |
||||||
| Gapless Piston Rings |
|
||||||
|
By Using Gapless Piston Rings manufactured by Total Seal Inc., Diesel engine blow-by can be greatly reduced in the engine with a better sealing ring. This upgrade utilizes Total Seal's 2nd Ring Groove ring, and uses Mahle's top compression ring and superior 2-piece oil control ring already used in the standard rebuild package.
|
||||||
| Stud Girdle |
|
||||||
  
|
The Stud Girdle is an upgrade that improves the stability of the lower rotating assembly in a 6.2L engine. The "kit" contains a set of outer main cap studs as well as a compact angled girdle to reinforce the center main caps and webbing. This upgrade is considered to help the durability of a 6.2L block, which can be considered for any engine rebuild, whether for power or fuel economy.
|
||||||
| DSG Timing Gears |
|
||||||
|
DSG's Dual Idler timing set is an upgrade that offers both durability and performance for the 6.2L engine. By replacing the stock timing chain that stretches over time with a timing gear set offers accurate valvetrain and injection pump timing for the life of the engine and fuel system. This increased durability due to the life of the gear set also helps maintain a stable power output for the duration of the engine's life.
|
||||||
| Fluidampnr Balancer |
|
||||||
|
New for the 6.2L is the Fluidampnr replacement harmonic balancer. This upgrade can be installed at the time of engine assembly, this is considered both a performance and a durability item. The Diesel Depot is also proud to announce that they assisted Fluidampnr in the development of the product for the 6.2L and are very familiar with this exciting upgrade.
|
||||||
| Beyond Longblock |
|
||||||
Beyond building a better 6.2L Long Block engine, bolt-on accessories and upgrades are available. These items can be installed before your engine is shipped to aide in the installation of the new engine into the chassis.
|
|||||||