Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSINFINITI2002Q45 V8-4.5L (VK45DE)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINESYSTEM SPECIFICATIONSTORQUE SPECIFICATIONSMAIN BEARING CAP
2002 Infiniti Q45 V8-4.5L (VK45DE)
Main Bearing Cap
2002 Infiniti Q45 V8-4.5L (VK45DE)SECTION Main Bearing Cap
CYLINDER BLOCK:
Apply engine oil to threads and seating surface of bolts, and tighten all bolts temporarily.
Tighten main bearing cap bolt (M12) to .....36.3 to 42.1 Nm (3.7 to 4.3 kg-m, 27 to 31 ft. lbs.) in order of 1 to 10.
Tighten main bearing cap sub bolt (M9) to .....26.5 to 32.3 Nm (2.7 to 3.3 kg-m, 20 to 23 ft. lbs.) in order of 11 to 20.
Tighten main bearing cap bolt (M12) to .....40 to 45° degrees (ideal 40 degrees) in order of 1 to 10.
Tighten main bearing cap sub bolt (M9) to .....30 to 35° degrees (ideal 30 degrees) in order of 11 to 20.
Tighten side bolt (M10) to ......46.1 to 51.9 Nm (4.7 to 5.3 kg-m, 34 to 38 ft. lbs.) in order of 21 to 30.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.