Silicone Oil Pan
DFC silicones the oil pans instead of using the factory gasket as they are common to compress and start to sweat prematurely.
The front covers on the Cummins engines use a paper gasket that is known to fall inside of the front gear case - causing significant oil losses and expensive repairs. By utilizing a high quality silicone, DFC is able to prevent this from occurring.
Piston Cooling (2003-2007 Dodges)
The 2003-2007 model engines come upgraded from DFC with additional piston cooling preventing premature piston erosion of the piston crown from failed injectors.
DFC's Rottler equipment allows them to remanufacture the Cummins engine to tighter than OEM specifications resulting in a longer lasting more efficient engine assembly.
The factory valve seats were only installed with 0.002”-0.003” crush which can allow them to fall out prematurely causing engine failure. DFC's engines have oversized SBI valve seats installed with at least 0.008” crush - eliminating this from occurring.
Instead of just testing old springs and reusing like most remanufacturers, DFC installs brand new SBI valve springs that are still tested for proper spring pressure on every cylinder head that they remanufacture.
DFC installs new valves from MAHLE/Clevite or SBI in every cylinder head they remanufacture. Most companies will just re-grind and install used again.
Common industry practice is to check guide clearances and if they are within specification, to not replace them. DFC considers this practice unacceptable and installs new cast SBI guides in every cylinder head they remanufacture.
Ensuring every engine is built to the same high quality standards as the next one, DFC is very strict on what is remanufactured rejecting components that require considerable "restoring" to acceptable specifications.
These engines use many torque to yield fasteners that require bolt “stretch” to maintain adequate clamp loads. In addition to not just following the OEM procedures for tightening sequence our assembly technicians record the achieved torque load through use of digital torque wrenches ensuring no fastener will come loose over time.
Weighed Rotating Assemblies
Our production engines are typically matched with near identical weight piston and connecting rod assemblies giving our customers a smoother running and quieter engine.