Cap And Rod Grinder / Rod Heater

Cap and Rod grinder services are performed on the Sunnen CRG-780, This machine produces a flat mating surface and is quickly adjustable for producing precision mating to surfaces.

The Sunnen CRH-60 Rod Heater  is used to heat connecting rods so wrist pins can be installed onto the connecting rods.

Connecting rods and their matching caps are fastened to the engine’s crankshaft to convert linear motion into rotary motion. They are often constructed together as one piece. Then a process of breaking the cap away from the rod is done at the factory. These rods and caps must remain a matched set. Since the caps are matched with their corresponding connecting rods, it’s important to keep the caps in order during disassembly.