Eagle 89-92 Mitsubishi 4G63 Stroker 94mm Crankshaft For 6-Bolt

When you're building a high-performance Mitsubishi 4G63 engine, especially for a 1990-1992 Eagle Talon, the crankshaft is the heart of it all. This Eagle forged 4340 steel crankshaft is designed to handle serious power. It features a 94mm stroke, which is a common choice for stroking these engines to increase displacement and torque, and it's built with a 6-bolt rear flange for compatibility with many transmissions.

Eagle starts with a non-twist forging of 4340 steel, a strong material known for its durability under stress. They've added .125-inch fillet radii at the journals, which significantly increases strength by reducing stress risers. Because of these larger radii, you'll need to use chamfered or narrowed bearings to ensure proper clearance. The surface of the crankshaft is nitrided for improved wear resistance and then micropolished to a smooth finish, reducing friction and improving oil flow. This level of attention to detail means this crank is ready for builds pushing the limits.

This crankshaft is a substantial upgrade for anyone looking to build a more powerful 4G63 engine. It's a key component for stroker builds, offering a solid foundation for increased performance. Remember that when installing a crankshaft with larger fillet radii, using the correct bearings is crucial for proper oil clearance and engine longevity. Always refer to the manufacturer's installation guide for specific details.