Tomei Forged Billet Crankshaft (2.2L Stroker, 94mm), 2003-2006 EVO 8 & 9

The reciprocating motion of the pistons is converted to rotary motion to rotate the wheels. Since the revolution is at high speed, high torsional and bending rigidity and wear resistance of the shaft are also important.
Weights are placed on the arms on both sides of the crankpin to increase the balance ratio of the counterweight against the inertia of the piston up-and-down motion and crankpin rotational inertia, thereby reducing vibration and minimizing bending to prevent uneven bearing contact.
Resistance and load of hitting the oil in the oil pan during rotation are reduced by sharpening both ends of the weight.
The amount of oil supplied is increased by supplying oil from two crank journals which improves resistance to bearing seizure.
The seizing problem of crank pulley is prevented by improved seizure resistance effect of WPC treatment.
Accurate processing with CNC machines and precision inspection with 3D measuring machines maintain quality with high precision.

Included:
• FORGED BILLET FULL COUNTERWEIGHT CRANKSHAFT 4G63 EVO1-9 2.2 94.0mm

Features:
• High balance ratio full counterweight
• Edge shaped counterweight
• X design 2 port lubrication
• WPC processing of crank pulley mount
• Precision quality control