Mitsubishi 4g63-64Manuals, Engine Specifications & Bolt Torques

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Mitsubishi 4g63-64
Main Bearing Bolts

Step 1 = 18 lb.ft, 25 Nm
Step 2 = + 90 degrees

Mitsubishi 4g63-64
Connecting Rod Bolts

Step 1 = 14.5 lb.ft, 20 Nm
Step 2 = + 90 degrees

Mitsubishi 4g63-64
Cylinder Head Bolts

According to the tightening sequence as shown below
Step 1 = 58 lb.ft, 80 Nm
Step 2 = Loosen bolts completely
Step 3 = 14.5 lb.ft, 20 Nm
Step 4 = + 90 degrees
Step 5 = + 90 degrees additionally

Mitsubishi 4g63-64
Displacement,
Arrangement,
Bore and Stroke

Displacement
4G63 SOHC 16V
121.9 CID, 1.197 liter
4G63 DOHC
121.9 CID, 1.197 liter
4G64 SOHC 8V
143.4 CID, 2.34 liter
4G64 SOHC 16V
143.4 CID, 2.34 liter


Compression Ratio
4G63 SOHC 16V
9.5:1
4G63 DOHC
Galant
9.8:1
Eclipse non-turbo
9.0:1
Eclipse Turbo
7.8:1
4G64 SOHC 8V
8.5:1
4G64 SOHC 16V
9.5:1

Bore
4G63 SOHC 16V
3.35 inches 85 mm
4G63 DOHC
3.35 inches 85 mm
4G64 SOHC 8V
3.41 inches 86.5 mm
4G64 SOHC 16V
3.41 inches 86.5 mm


Stroke
4G63 SOHC 16V
3.46 inches 88 mm
4G63 DOHC
3.46 inches 88 mm
4G64 SOHC 8V
3.94 inches 100 mm
4G64 SOHC 16V
3.94 inches 100 mm