What is pin crankshaft?

A pin crankshaft, also known as a "Forged I-beam" crankshaft, is a type of crankshaft used in high-performance engines that require higher RPM ranges and increased durability. The term "pin" refers to the shape of the connecting rod journal, which is pin-shaped instead of round.

The pin crankshaft is made from high-strength forged steel and features a design that provides improved strength and rigidity. The connecting rod journals are offset from the main journals to reduce the side load forces on the pistons during high-speed operation.

The pin crankshaft design allows for greater power output and engine durability by increasing the amount of contact area between the connecting rods and the crankshaft. It is commonly used in racing applications and in high-performance street engines.

Overall, a pin crankshaft offers superior strength, improved engine performance, and increased durability over traditional crankshaft designs.