4G63 Turbocharged Engine Crankshaft (6-bolt type, for first-generation DSM models)
The stock Mitsubishi 4G63 crankshaft features an 88mm stroke, a 57mm main journal diameter, and a 45mm connecting rod journal diameter; it is manufactured from high-quality 4340 steel billet or cast iron.
Description
The Mitsubishi 4G63 crankshaft (OEM part number MD346024) is designed specifically for 7-bolt engines. It features an 88.00mm stroke, delivering a standard displacement of 2.0L.
OEM Specifications
Engine stroke: 88.00 mm
Main journal diameter: 57.00 mm (2.244 in)
Connecting rod journal diameter: 45.00 mm (1.771 in)
Rear main oil seal diameter: 85.00 mm
Front oil seal diameter: 44.00 mm
Total length: 469.00 mm
Total weight: Approx. 33–35 lbs (15–16 kg)
Key design difference—bolt layout: 4G63 engines produced between 1993 and 1997 use a 6-bolt connection for the flywheel or flexplate, whereas engines from 1998 onwards (such as the Evo IV–IX) utilize a higher-strength 7-bolt flange.
