Our engine builders are ASE master engine machinist.The most common 7.3 Powerstroke high pressure oil pump (HPOP) leak happens when one or both of the HPOP O-rings on the oil line fittings fail. We replace the valve guide we do not try to repair it.Īll assembled long blocks are tested for compression before shipping. We do not use bronze valve guide liners like some production rebuilders as they will commonly fail. We do not "shim" weak valve springs to increase pressure, they are replaced.
#6.7 CUMMINS REAR MAIN SEAL LEAK CRACKED#
We do not weld or repair cracked or damaged cylinder head castings. Surfaces are then checked with the same profilometer used on block gasket surfaces. Head gasket surfaces are refinished with CBN or PCD cutters, the latest technology in the resurfacing of cast iron and aluminum to ensure a proper gasket seal. Valve guides are replaced & honed in Sunnen guide hones. We do not try to recondition rods with "spun" bearings.Ĭylinder heads are remanufactured to exceed OEM specifications in a Rottler or Serdi valve seat machines. No welded crankshaft journals! No rear seal " speedie" sleeves, which will leak over time! Most all production rebuilders do not balance their cranks, rods, & pistons.Ĭonnecting rods are also heat treated, shot peened and machined to OEM specifications. Our crankshafts are then balanced in a Stewart Warner digital balancer. We do not use head gasket "shims" to correct block height errors.Ĭrankshafts are heat treated in our thermal convection oven, which is better and easier on the casting than the standard production rebuilder's thermal oven, shot peened to relieve casting stresses, and machined a maximum of. To ensure proper gasket sealing we check all surfaces with a profilometer, a device used to check surface finish to ensure gasket life and efficiency. We achieve single digit RA figures for MLS head gaskets which is critical.
This is the latest technology in surfacing cast iron. We do not try and repair blocks with "spun" main bearings.īlock decks are resurfaced with CBN cutters in CNC Machining centers. Main bearing saddles are align honed or align bored. We do not spray weld any components in the machining process.Ĭylinders are bored in CNC Machining centers (unless they are wet sleeve blocks) & honed in Sunnen CNC cylinder hones with diamond abrasives (OEM technology). We do not weld damaged crankshaft journals. We do not weld or repair cracked blocks or heads. A specification and build sheet are available for each engine. Cam timing events are measured and adjusted. Piston & valve guide clearances are set with dial bore gauges. Bearings clearances are set depending on the application (truck, car, marine, performance, etc.). The rod, main, & cam clearances are measured with a dial bore gauges & micrometers. Blueprinting is defined as removing or narrowing the tolerances found in mass production engines. WARNING: Crude oil, gasoline, diesel fuel, and other petroleum products can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.Īll engines are blueprinted. Additional Costs May Apply Depending On The Application. Please Note On Your Order The Vehicle Use, These Engines Are Used In Multiple Applications. New Piston Kits, Rod Bearings, Main Bearings, Cam Bearings, Long Block Gasket Set, Oil Pump, and several Valve Train parts are replaced. Our Remanufactured 6.7L Cummins Long Blocks are assembled using Mahle, Federal Mogul, Hastings, Melling, Silvolite, SBI, and Elgin parts. PLEASE READ & REVIEW THE INSTALLATION INSTRUCTIONS WITH THE INSTALLER!ĬLICK HERE FOR OUR INSTALLATION INSTRUCTIONS A copy of the installation instructions (along with various other documents for your review) will be included with the long block shipment. You will need to follow the installation instructions found under the documentation tab on the home page. You will receive the long block, as pictured, along with the new oil pump & the long block gasket set.
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