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Home › Land Rover › 1990 › Range Rover Base › Repair and Diagnosis › Engine Performance › Engine Controls - Service & Adjustment Specifications › Ignition System › Spark Plugs

Spark Plugs

SPARK PLUG TYPE

Application Champion No.
3.9L V8
8.13:1 Compression Ratio RN12YC
9.35:1 Compression Ratio RN9YC
SPARK PLUG SPECIFICATIONS

Gap In. (mm) Torque Ft. Lbs. (N.m)
0.033-0.038 (0.84-0.96) 15 (21)
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