Performance Diesel and Performance Gas machine shop   Custom oversize valves available for Cummins, Duramax, and Powerstroke
       5293 Ward Road, Unit #3      Arvada, CO   80002     303-420-6218
Cummins Block Operations:
  • -Block re-boring for oversize pistons or  modified clearances.
  • -Cylinder sleeve installation for repair of damaged cylinders.
  • -Resurfacing.
  • -Magnafluxing.
  • -Pressure testing.
  • -Crack Repair.
  • -CNC Fire Ring Groove machining.
  • -"O" ring groove machining.
  • -Head bolt hole enlargement and tapping for 14 MM head studs.