G37 Coupe V6-3.7L (VQ37VHR) (2008)
Connecting Rod Bearing: Specifications
Tightening Torque and Sequence
Rod Bearing Cap
Tighten connecting rod bolt as follows:
Inspect the outer diameter of connecting rod bolt.
Apply engine oil to the threads and seats of connecting rod bolts.
Tighten connecting rod bolts.
Torque .................................................................................................................................................................................. 28.4 Nm (2.9 kg-m, 21 ft-lb)
Completely loosen connecting rod bolts.
Torque ............................................................................................................................................................................................ 0 Nm (0 kg-m, 0 ft-lb)
Tighten connecting rod bolts.
Torque .................................................................................................................................................................................. 24.5 Nm (2.5 kg-m, 18 ft-lb)
Then turn connecting rod bolts 90° clockwise (angle tightening).
CAUTION:
Always use the angle wrench [SST: KV10112100 (BT8653 A)] (A). Never make judgment by visual inspection.
After tightening connecting rod bolts, check that crankshaft rotates smoothly.
Check the connecting rod side clearance. Refer to EM-143, "Cylinder Block". See: Connecting Rod/Specifications/Service Limits and General
Specifications
CONNECTING ROD BOLT OUTER DIAMETER
Measure the outer diameters [(a), (b) and (c)] at the position shown in the figure.
a ......................................................................................................................................................... Value at the end of the smaller diameter of the bolt
b ....................................................................................................................... Value at the end of the smaller diameter of the bolt [opposite side of (a)]
c ................................................................................................................................................. Value of the smallest diameter of the smaller of the bolt
Obtain a mean value (d) of (a) and (b).
Subtract (c) from (d).
Limit [(d) - (c)] .................................................................................................................................................................................. 0.09 mm (0.0035 in)
If it exceeds the limit (large difference in dimensions), replace the bolt with new one.