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TEC404 — Lower-Block Reconditioning
TEC404 — Lower-Block Reconditioning
4 days (32 hours)
$595 U.S.
3.2 Continuing Education Units (CEUs) awarded

Designed for automotive repair technicians and machinists involved in engine rebuilding, this course thoroughly covers disassembly, cleaning, critical measurements and selection of the proper sequence in reconditioning. Demonstrations using proven techniques and tools include cylinder boring and honing, surface milling and connecting, and rod reconditioning. Assembly preparation will also be performed including fitting bearings and rings. The technician will leave with the knowledge to make a determination of which machine shop services are required along with selecting the proper replacement parts for performance and service life. They gain knowledge on OE design changes for proper assembly and sealing of aluminum and cast iron engines, as well as analyzing failed composition of OE and replacement gaskets.

After completing this workshop, the student will be able to:

  • Apply disassembly and cleaning techniques for efficient service and to prevent costly damage 
  • Identify the needs for machining, repair or replacement of lower-block components through inspection and measurement of all components 
  • Calculate and determine lower-block machining in the areas of line boring, surface mill, cylinder bore/hone and connecting rod reconditioning 
  • Prepare the lower block and components for assembly, final cleaning, replacement piston to rod installation, piston ring fit, cam bearing installation, main bearings, cam and crank installation 
  • Recognize critical factors for gasket selection and installation 
  • Analyze failed seals and gaskets to identify required steps and procedures to insure a quality repair and prevent comebacks 
  • Identify procedures and materials used in dry and fluid applications





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