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.
Valve Spring - Dimensions & Pressure Load
2002 Infiniti Q45 V8-4.5L (VK45DE)SECTION Valve Spring - Dimensions & Pressure Load
STANDARD:
Free height 51.28 - 51.48 mm (2.0189 - 2.0268 inch)
Installation height 33.8 mm (1.331 inch)
Installation load 166 - 168 N (16.9 - 19.2 kg, 37 - 42 lbs.)
Height during valve open 24.4 mm ((0.961 inch)
Load with valve open 291 - 329 mm (29.7 - 33.6 kg, 65 - 74 lbs.)
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.