Question2000 dodge grand caravan sport 3.3 liter g flex fuel engine
i am looking for proper torque specs for head bolts on this engine my haynes manual shows 105 ft lbs for all v6 through 2003 but i have broke 1 old one and 1 new one trying to reach that spec
Answer
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INSTALLATION
Clean all sealing surfaces of cylinder block and cylinder heads.
Install new gaskets on cylinder block Head Gasket Installation
The cylinder head bolts are torqued using the torque yield method, they should be examined BEFORE reuse. If the threads are necked down, the bolts should be replaced Checking Bolts for Stretching (Necking)
Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale the bolt should be replaced.
Tighten the cylinder head bolts 1 - 8 in the sequence shown in Cylinder Head Bolts Location and Tightening Sequence Using the 4 step torque turn method, tighten according to the following values:
Step 1: Bolts 1 - 8 to 61 N·m (45 ft. lbs.)
Step 2: Bolts 1 - 8 to 88 N·m (65 ft. lbs.)
Step 3: Bolts 1 - 8 (again) to 88 N·m (65 ft. lbs.)
Step 4: Bolts 1 - 8 turn an additional 1/4 Turn. (Do not use a torque wrench for this step.)
NOTE: Bolt torque after 1/4 turn should be over 122 N·m (90 ft. lbs.) If not, replace the bolt.
Tighten head bolt number 9 Cylinder Head Bolts Location and Tightening Sequence to 33 N·m (25 ft. lbs.) after head bolts 1 - 8 have been tighten to specifications.
