Valve Guide Clearance
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
Valve Stem Diameter
Measure the diameter of valve stem with micrometer.
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Standard |
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Intake |
: 5.965 - 5.980 mm (0.2348 - 0.2354 in) |
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Exhaust |
: 5.955 - 5.970 mm (0.2344 - 0.2350 in) |
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Valve Guide Inner Diameter
Measure the inner diameter of valve guide with inside micrometer.
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Standard |
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Intake and Exhaust |
: 6.000 - 6.018 mm (0.2362 - 0.2369 in) |
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Valve Guide Clearance
(Valve guide clearance) = (Valve guide inner diameter) - (Valve stem diameter).
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Valve guide clearance: |
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Standard |
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Intake |
: 0.020 - 0.053 mm (0.0008 - 0.0021 in) |
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Exhaust |
: 0.030 - 0.063 mm (0.0012 - 0.0025 in) |
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Limit |
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Intake |
: 0.08 mm (0.003 in) |
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Exhaust |
: 0.09 mm (0.004 in) |
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- If the calculated value exceeds the limit, replace valve and/or valve guide.