Why Are Forged Pistons So Strong?

The episode of B2B began with an introduction to the world of pistons, discussing the differences between billet and forged materials. Mr. Frizzle explained that billet pistons are made from a larger piece of material that is then cut to shape, resulting in a weaker material with a lack of flow and porosity. On the other hand, forged pistons are created through a process where pressure is applied to the material, forcing the grains together in a tight uniform shape.

The class decided to take a trip to the billet piston, with Mr. Frizzle joking about being called "piston" in high school. As they arrived at the billet piston, Jeremiah explained that the initial manufacturing process created nice, tight uniform grains, but during machining, the grain flow was disrupted and cut off. This resulted in a failure point, where cracks would begin to form.

Mr. Frizzle then led the class to the forging process, where they witnessed how the grain flow changed significantly. By applying pressure perpendicular to the grain flow, the force directed the grains around critical parts of the piston, such as the pin bosses, skirt, and crown. The class was impressed by the optimal part created through forging.

As they prepared to return to reality, Jeremiah expressed his excitement about seeing Mr. Frizzle more often. Mr. Frizzle reassured him that he would be seeing more of each other soon. After the episode ended, Jeremiah reflected on the experience, feeling a sense of awe and respect for the piston-making process.

The video then cut to an introduction by Lowry, who welcomed viewers to his hydraulic press channel test facility. He warned them that the pistons were going to get crushed and invited them to watch the experiment. The first piston was the billet one, which fractured but still held its main pancake part intact. Lowry expressed surprise at how strong it was.

The next piston was forged, placed on its side to show how the material would crack. As the hydraulic machine pressed down, the piston broke apart, revealing its internal structure. Lowry thanked JE Pistons for supplying the pistons and invited viewers to check out his channels for more content. He also mentioned that he has a second channel with more complex projects.

The video ended with an invitation from Jeremiah to follow Donut Media on Instagram, where they would share more content about billet and forged pistons. The episode concluded with a call-to-action, asking viewers to follow Jeremiah Burton and look forward to the next episode of B2B.