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Engine Compression

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
2.5L Non-Turbo 8.9:1
2.5L Turbo 7.8:1
3.0L 8.85:1
3.3L 8.9:1
3.9L 9.0:1
5.2L 9.0:1
5.9L 8.1:1
Compression Pressure
3.0L (1) 178 psi (12.5 kg/cm2 )
All Other Engines (2) 100 psi (7.0 kg/cm2 )
(1) At 250 RPM.
(2) Minimum compression pressure is given. Maximum difference between each cylinder should not exceed 25 percent.