
Remanufacturing a Cummins 4BT Diesel engine involves many critical steps. Below you'll see the engine components and how we handle each of these in our remanufacturing process. Think of them as our steps towards producing a top quality replacement engine.
| Engine Block/Case |
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The rebuilding process starts with the bare cylinder block/case. The bare block is examined carefully to determine whether or not it is suitable for rebuilding.
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| Crankshaft |
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The crankshaft is one of the primary components of the engine's internal rotating assembly.
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| Camshaft & Lifters |
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The camshaft and lifters are also serviced as part of the rebuilding process. Remanufactured lifters are installed along with a quality inspected used camshaft.
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| Rockers & Pushrods |
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Other valve-train components are the rocker arm assemblies and pushrods.
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| Connecting Rods |
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The connecting rods are taken through an extensive remanufacturing process.
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| Cylinder Heads |
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The cylinder heads are an important component of any engine; they function as the "lungs" of the engine. They are critical to the performance and life of our engines, so our engines always receive a top quality remanufactured cylinder head.
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| Bolt On Items |
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Many items are cleaned, inspected, and re-used within our remanufactured engines. These parts are listed below.
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| New Internals |
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Below you'll see the components that are replaced with new parts in every remanufactured engine.
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| Engine Assembly |
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After the final machining processes are completed and the components to be used in the engine are inspected, the engine is assembled. During this assembly process critical specifications are checked and re-checked to make sure the completed engine is up to our high standard of performance.
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Upgrades & Options |
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Beyond the OEM oriented rebuild offered above there are several upgrades and options also available. These are geared at either improving durability or improving power output, and in many cases both. |
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| Balancing |
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A balanced rotating assembly is a highly recommended upgrade for any engine. Our procedure utilizes a Multi-Bal 3000 computerized engine balancer. Using this equipement we are able to take our rotating assemblies down to what are widely considered race engine tolerances.
In Order to complete the balancing process a majority of the engine's rotating assembly components must be modified.
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| Cyl. Head Porting |
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Cylinder head porting and gasket matching is a way to improving power output of the 4BT. Removing unnecessary material from the exhaust ports of the cylinder head helps improve airflow into and out of the engine. Thus, the potential for increased power is improved. Depending on the customers desires a gasket/port match, port blend, or full porting may be peformed.
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| Lower Compression Ratio |
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Lowering the compression ratio of a 4BT is a way to increasing durability while running the engine at higher than designed power and boost levels. There are several ways to lower compression. We typically reduce piston height or use of aftermarket pistons where available.
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| ARP Head Studs |
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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 head bolts. They are recommended for higher boost level engines.
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| Ceramic Coatings |
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High temperature ceramic coatings can be applied to a number of internal and external engine components. The coatings are designed to either reflect heat away from or to trap heat inside the parts on which they are applied. The use of these coating can greatly improve the overall thermal efficiency of an engine and parts.
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.
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| Gapless Piston Rings |
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Using gapless piston rings by Total Seal Inc. reduces blow-by by giving a supperior ring seal. This upgrade utilizes Total Seal's gapless 2nd ring and Mahle's top compression ring & oil control ring.
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| Fluidampnr Balancer |
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Upgrading the factory balancer to the Fluiddampr balancer reduces vibration across the engines entire RPM range.
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