Piston Machining

Austin Jones at J.H. Benedict has been very nice to send us several pictures of our 4340 steel exhaust pistons throughout the manufacturing process. They are almost finished. There is still some grinding to do and some machining on the crown.  You can see they did the turning operations first on the lathe, and then machined out the inside of the piston. Bushings for the wrist pin will be machined and ground out of a bronze alloy and pressed in later.

4340 steel billet for the piston beginning the process.

4340 steel billet for the piston beginning the process.

First turning operations for the piston are complete.

First turning operations for the piston are complete.

Machining processes on the piston.

Machining processes on the piston.

Roughing out the inside of the piston on the mill.

Roughing out the inside of the piston on the mill.

The piston is nearing completion!

The piston is nearing completion! Lands and grooves are still to be ground, and the crown is still to be machined. Bushings will be pressed in later.

 

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