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Here are the torque specs for the Nissan 1400 engine:
Main bearing cap bolts: 58-65 Nm (43-48 lb-ft)
Connecting rod cap bolts: 24-28 Nm (18-21 lb-ft)
Cylinder head bolts: 40-45 Nm (30-33 lb-ft)
Rocker arm shaft bolts: 20-25 Nm (15-18 lb-ft)
Flywheel bolts: 85-95 Nm (63-70 lb-ft)
Note that these are general torque specs and may vary slightly depending on the specific year and model of the Nissan 1400 engine. It's always best to consult the factory service manual for the exact torque specs for your engine.
Here is a suggested updated torque spec for this engine's rocker arm bolts;
Rocker arms
Step one: Torque to 11 ft lbs then tighten an additional 90 degrees of bolt head rotation. Some guys don't fuss with the torque specs and just get them good and tight. Either way, be careful, as the heads are aluminum. You do not want to over tighten these bolts
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