Brian Crower Crankshaft - Toyota 4AGE 83mm Stroke 4340 Billet

This is a Brian Crower 4340 billet crankshaft specifically made for the Toyota 4AGE engine, fitting 1985-1991 Toyota Corollas and 1985-1989 Toyota MR2s. If you're building a performance engine or rebuilding your 4AGE, a strong crankshaft is the foundation. This part replaces your stock crankshaft, offering an 83mm stroke which is larger than the factory specification, allowing for increased displacement and potential for more power when paired with other engine modifications.

Brian Crower builds these crankshafts from 4340 billet steel, a well-known material for its strength and durability under high stress. This means it's well-suited for engines that will see hard use, whether on the street or track. The billet construction means the entire crankshaft is machined from a single block of steel, resulting in a more uniform grain structure and greater overall integrity compared to a forged or cast piece. This level of construction is crucial for handling the increased cylinder pressures and rotational forces that come with a performance engine build. The 83mm stroke is a notable increase over the stock dimension, which can significantly boost the engine's cubic inches and torque output.

When installing a new crankshaft, it's essential to ensure all related components are in good condition. This includes bearings, seals, and the oil pump. Proper balancing of the rotating assembly, including the crankshaft, pistons, connecting rods, and flywheel, is also critical for engine longevity and smooth operation. Always refer to the manufacturer's installation instructions for specific details regarding clearances, lubrication, and torque specifications.