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Isuzu 4J engine specifications and manuals

 
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Isuzu A-4JA1 and A-4JB1 , Bolt Tightening Torques


Isuzu A-4JA1 and A-4JB1 engine Connecting Rod Nut torque

57.9 - 65.1 lb.ft, 78.4 - 88.2 Nm


Isuzu A-4JA1 and A-4JB1 engine, Main Bearing Bolt torque

115.7 - 130.2 lb.ft, 156.9 - 176.5 Nm


Isuzu A-4JA1 and A-4JB1 engine, Cylinder Head Bolt torque

New Bolt
Step 1 = 21.7 - 36.1 lb.ft, 29.4 - 49.0 Nm
Step 2 = 59.4 - 66.5 lb.ft, 80.4 - 90.2 Nm

Reused Bolt
Step 1 = 57.9 - 65.1 lb.ft, 78.4 - 88.2 Nm
Step 2 = 72.4 - 79.6 lb.ft, 98.1 - 107.9 Nm


Isuzu A-4JA1 and A-4JB1 cylinder head bolt tightening sequence
Isuzu A-4JA1 and A-4JB1 cylinder head bolt tightening sequence - click to view




Isuzu 4JB1 engine Specifications

Isuzu 4JB1 Displacement, Bore, Stroke, Compression Ratio 

Bore
3.7 inches 93 mm

Stroke
4.0 inches 102 mm

Displacement
169 CID, 2.8 liter

Compression Ratio
18.2:1


Isuzu 4J, Weight 

Dry Weight
A-4JA1
480 lb, 218 kg
A-4JB1
486 lb, 220 kg
A-4JB1T
540 lb, 245 kg
4JB1
552 lb, 250 kg






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