Engine Torque Specifications
TORQUE SPECIFICATIONS
CYLINDER HEAD TORQUE AND SEQUENCE
NOTE: The four smaller cylinder head mounting bolts require sealant to be added to them before installing. Failure to do so may cause leaks. The locations are identified with an *.
1. Lubricate the cylinder head bolt threads with clean engine oil and install the eight M11 bolts.
2. Coat the four M8 cylinder head bolts with Mopar(R) Lock and Seal Adhesive then install the bolts.
NOTE: The cylinder head bolts are tightened using an angle torque procedure, however, the bolts are not a torque-to-yield design.
3. Tighten the bolts in sequence using the following steps and torque values:
- Step 1: Tighten bolts 1-8, 27 Nm (20 ft. lbs.).
- Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts. Tighten bolts 9 thru 12 to 14 Nm (10 ft. lbs.).
- Step 3: Tighten bolts 1-8, 90 degrees.
- Step 4: Tighten bolts 1-8, 90 degrees, again. Tighten bolts 9-12, 26 Nm (19 ft. lbs.)
HEAD BOLT REUSE
NOTE: The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts should be replaced.
Necking can be checked by holding a straight edge against the threads (2). If all the threads do not contact the scale, the bolt should be replaced.
INTAKE MANIFOLD TORQUE AND SEQUENCE
Install intake manifold retaining bolts and tighten in sequence shown to 12 Nm (105 in. lbs.).
CAMSHAFT BEARING CAP AND TORQUE
1. Lubricate the camshaft journals with clean engine oil.
NOTE: Position the left side camshaft so that the camshaft sprocket dowel is near the 1 o'clock position, This will place the camshaft at the neutral position easing the installation of the camshaft bearing caps.
2. Position the camshaft into the cylinder head.
3. Install the camshaft bearing caps, hand tighten the retaining bolts.
NOTE: Caps should be installed so that the stamped numbers on the caps are in numerical order, (1 through 4) from the front to the rear of the engine. All caps should be installed so that the stamped arrows on the caps point toward the front of the engine.
4. Working in 1/2 turn increments, tighten the bearing cap retaining bolts starting with the middle cap working outward.
5. Tighten the camshaft bearing cap retaining bolts to 11 Nm (100 in. lbs.).
MAIN BEARING CAP TORQUE AND SEQUENCE
CAUTION: Main bearings are select fit. Refer to Crankshaft Main Bearings for proper bearing selections.
CAUTION: When installing crankshaft, use care not to damage bearing surfaces on the crankshaft.
NOTE: Apply sealant to the tone wheel retaining screws prior to installation.
1. Lubricate upper main bearing halves with clean engine oil.
2. Position crankshaft in cylinder block.
3. Install the thrust washers (1).
CAUTION: The bedplate to cylinder block mating surface must be coated with Mopar(R) Engine RTV sealant prior to installation. Failure to do so will cause severe oil leaks.
NOTE: Make sure that the bedplate and cylinder block sealing surfaces are clean and free of oil or other contaminants. Contaminants on the sealing surfaces may cause main bearing distortion and/or oil leaks.
4. Apply a 2.5mm (0.100 inch) bead of Mopar(R) Engine RTV sealant to the cylinder block-to-bedplate mating surface (1) and (2).
5. Coat the crankshaft main bearing journals with clean engine oil and position the bedplate onto the cylinder block.
NOTE: Lubricate the bedplate retaining bolts with clean engine oil prior to installation.
6. Install the bedplate retaining bolts, making sure to place the stud bolts in the correct location, Torque the bolts in the sequence shown.
- Hand tighten bolts 1D,1G and 1F until the bedplate contacts the block.
- Tighten bolts 1A - 1J to 54 Nm (40 ft. lbs.)
- Tighten bolts 1 - 8 to 7 Nm (62 in. lbs.)
- Turn bolts 1 - 8 an additional 90°.
- Tighten bolts A - E 27 Nm ( 20 ft. lbs.).
ROD BEARING CAP TORQUE
CAUTION: Connecting Rod Bolts Must Not Be Reused. Always replace the Rod Bolts whenever they are loosened or removed.
Lubricate NEW rod bolts and bearing surfaces with engine oil. Install connecting rod cap and bearing. Tighten the NEW bolts to 27 Nm (20 ft. lbs.) plus 90°.
HARMONIC BALANCER TORQUE
CAUTION: To prevent severe damage to the Crankshaft, Damper or Damper Installer 8512-A, thoroughly clean the damper bore and the crankshaft nose before installing Damper.
1. Align vibration damper slot with key in crankshaft. Slide damper onto crankshaft slightly.
CAUTION: Damper Installer 8512-A, is assembled in a specific sequence. Failure to assemble this tool in this sequence can result in tool failure and severe damage to either the tool or the crankshaft.
2. Assemble Damper Installer 8512-A as follows, The nut (2) is threaded onto the threaded rod (3) first. Then the roller bearing (1) is placed onto the threaded rod (The hardened bearing surface of the bearing MUST face the nut (4) ). Then the hardened washer (5) slides onto the threaded rod. Once assembled coat the threaded rod's threads with Mopar(R) Nickel Anti-Seize or equivalent.
3. Using the Damper Installer 8512A, press the damper onto the crankshaft.
4. Install and tighten vibration damper bolt to 175 Nm (130 ft. lbs.).
FLEX PLATE TORQUE AND SEQUENCE
1. Position the flexplate onto the crankshaft and install the bolts hand tight.
2. Tighten the flexplate retaining bolts to 95 Nm (70 ft. lbs.) in the sequence shown.
OIL PUMP TORQUE AND SEQUENCE
1. Position the oil pump onto the crankshaft and install one oil pump retaining bolt.
2. Position the primary timing chain tensioner and install three retaining bolts.
3. Tighten the oil pump and primary timing chain tensioner retaining bolts to 28 Nm (250 in. lbs.) in the sequence shown.
EXHAUST MANIFOLD TORQUE AND SEQUENCE
CAUTION: If the studs came out with the nuts when removing the engine exhaust manifold, install new studs. Apply sealer on the coarse thread ends. Water leaks may develop at the studs if this precaution is not taken.
1. Position the engine exhaust manifold and gasket on the two studs located on the cylinder head. Install conical washers and nuts on these studs.
2. Install remaining conical washers. Starting at the center arm and working outward, tighten the bolts and nuts to 25 Nm (18 ft. lbs.).
WATER PUMP TORQUE AND SEQUENCE
The water pump is bolted directly to the engine timing chain case cover.
1. Clean gasket mating surfaces.
2. Using a new gasket, position water pump and install mounting bolts. Tighten water pump mounting bolts to 54 Nm (40 ft. lbs.) torque.
3. Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.