Kelley's Works in Progress

AMC 242/4.0L Engine Torque Specifications

Since the 4.0L I6 engine is so common for us, here are all the torque specs I can find for it in factory literature.

These specifications are amassed from Factory Service Manuals and MOPAR's Jeep Engines book.

Bolt Item Bolt Size "Install to:" torque "Service to:" torque
Engine Mount - Support Cushion --- 30 pound-feet N/L
Engine Mount - Engine Bracket --- 40 pound-feet N/L
Engine Mount - Support Cushion Bracket Studs --- 30 pound-feet N/L
Engine Mount - Through Bolt --- 48 pound-feet N/L
Crankshaft Main Bearing Caps --- 80 pound-feet 75-85 pound-feet
Crankshaft Main Bearing Brace --- 35 pound-feet N/L
Connecting Rods 11/32" 33 pound-feet N/L
Cylinder Head, except #11 1/2"-13 110 pound-feet Reuse only ONCE!
Cylinder Head, #11 1/2"-13 100 pound-feet (Lube with Teflon Sealer) Reuse only ONCE!
Rocker Arm Assembly --- 19 pound-feet N/L
Intake/Exhuast Manifold 3/8"-16x1-1/2" 23 pound-feet N/L
Camshaft Sprocket SPECIAL 80 pound-feet N/L
Harmonic Damper 1/2"-20 80 pound-feet (Lube with Engine Oil) N/L
Thermostat Housing 5/16"-18 156 pound-inches N/L
Timing Cover 1/4"-20 60 pound-inches N/L
Timing Cover 5/16"-18 192 pound-inches N/L
Water Pump Mounting --- 270 pound-inches N/L
Fan Blade to Viscous Clutch 5/16"-18x1/2" 18 pound-feet N/L
Viscous Clutch Mounting --- 18 pound-feet N/L
Distributor Holddown Clamp --- 204 pound-inches N/L
Engine Block Drain Plug --- 25 pound-feet N/L
Engine Block Heater --- 16 pound-inches N/L
Fuel Rail Mounting --- 108 pound-inches N/L
Throttle Body Mounting --- 9 pound-feet N/L
Ignition Coil Bracket Mounting (1991-up) --- 192 pound-inches N/L
Oil Sump Pan 1/4"-20x3/4" 84 pound-inches N/L
Oil Sump Pan 5/16"-18x3/4" 132 pound-feet N/L
Oil Sump Pan Drain Plug --- 30 pound-feet N/L
Oil Pump Bolt, Long --- 17 pound-feet N/L
Oil Pump Bolt, Short --- 10 pound-feet N/L
Oil Pump Housing Cover --- 70 pound-inches N/L
Exhaust Manifold to Downpipe 3/8"-16 Hex Nut 20 pound-feet N/L
Oil Filter Adapter Through Bolt SPECIAL 50 pound-feet N/L
Oil Filter Attaching Nipple SPECIAL 50 pound-feet N/L
Start Motor Mounting --- 33 pound-feet N/L
Spark Plugs SPECIAL 27 pound-feet N/L
Air Temperature Sensor --- 20 pound-feet N/L
Coolant Temperature Sensor --- 21 pound-feet N/L
Heated Exhaust Gas Oxygen Sensor --- 23 pound-feet N/L


--- = No Data Available Yet N/L = Not Listed