These engines use many torque to yield fasteners that require bolt “stretch” to maintain adequate clamp loads. DFC considers this practice unacceptable and installs new cast SBI guides in every cylinder head we remanufacture. 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 we remanufacture.Ĭommon industry practice is to check guide clearance and if within specification, not replace. Our Rottler equipment allows us to remanufacture the Cummins engine to tighter than OEM specifications resulting in a longer lasting more efficient engine assembly. By utilizing a high quality silicone we are able to prevent this from occurring. The front covers on the Cummins engines use a paper gasket that is known to fall inside of the front gear case causing a significant oil loss and expensive repair. Our production engines are typically matched with near identical weight piston and connecting rod assemblies giving our customers a smoother running and quieter engine. Most companies will re-grind and install used again.Įnsuring every engine is built to the same high quality standards as the next DFC is very strict on what is remanufactured rejecting components that require considerable “restoring” to acceptable specifications. Our engines have oversized SBI valve seats installed with at least 0.008” crush eliminating this from occurring.ĭFC installs new valves from MAHLE/Clevite or SBI in every cylinder head we remanufacture.
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 silicones the oil pans instead of using the factory gasket as they are common to compress and start to sweat prematurely.Įvery 6.7 Cummins long block comes standard with ARP Series 2000 head studs preventing premature head gasket failure.
0 kommentar(er)
