Integra LS Coupe L4-1834cc 1.8L DOHC MFI (1997)
Valve Guide: Testing and Inspection
DIAL INDICATOR METHOD
1. Measure the guide-to-stem clearance with a dial indicator while rocking the stem in the direction of normal thrust (wobble method).
Intake Valve Stem-to-Guide Clearance:
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Standard (New): 0.04 - 0.10 mm (0.002 - 0.004 inch)
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Service Limit: 0.16 mm (0.006 inch)
Exhaust Valve Stem-to-Guide Clearance:
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Standard (New): 0.10 - 0.16 mm (0.004 - 0.006 inch)
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Service Limit: 0.22 mm (0.009 inch)
2. Valve extended 10 mm out from seat.
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If measurement exceeds the service limit, recheck using a new valve.
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If measurement is now within the service limit, reassemble using a new valve.
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If measurement still exceeds limit, recheck using alternate method below, then replace valve and guide, if necessary.
MICROMETER METHOD
1. An alternate method of checking guide to stem clearance is to subtract the O.D. of the valve stem, measured with a micrometer, from the I.D. of
the valve guide, measured with an inside micrometer or ball gauge.
2. Take the measurements in three places along the valve stem and three places inside the valve guide.
3. The difference between the largest guide measurement and the smallest stem measurement should not exceed the service limit
Intake Valve Stem-to-Guide Clearance:
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Standard (New): 0.02 - 0.05 mm (0.001 - 0.002 inch)
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Service Limit: 0.08 mm (0.003 inch)
Exhaust Valve Stem-to-Guide Clearance:
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Standard (New): 0.05 - 0.08 mm (0.002 - 0.003 inch)
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Service Limit: 0.11 mm (0.004 inch)
