Eagle Crankshafts for the 90-99 Mitsubishi Eclipse 4G63 are made of 4340 steel and go through a multi-stage heat treatment and use non-twist forging. They are stress-relieved, shot-peened, x-rayed, magnafluxed, and sonic tested. The crankshafts are cross-drilled and have chamfered oil holes for improved oiling. The journals are precision-ground and micro-polished to under 5 RA. When buying Eagle you are getting top quality parts that will withstand almost anything you can throw at it!
Part #: 2439375900A6
Note: Be sure you know whether you have a 6 bolt or a 7 bolt 4G63 before ordering.
FITMENT: Mitsubishi Eclipse 1990-1992 4G63 (6 Bolt ONLY)
Important Crankshaft must be balanced to match your specific rods and pistons.
Highlights:
- material: forged 4340 steel
- intended balance: internal
- stroke: 3.937″
- rod journal: 1.771″
- rod journal width: 1.13″
- main journals: 2.244″
- minimum rod length: 5.900″
- typical weight: 33 lbs.
- snout diameter: 1.26″
- flywheel bolts: 6