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Engine Compression

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
Metro
LSi 9.8:1
Except LSi 9.5:1
Prizm (1)
Spectrum 9.6:1
Tracker (1)
Compression Pressure
Metro (1)
Prizm (2) 142-191 psi (10.0-13.9 kg/cm2 )
Spectrum 128-179 psi (8.8-12.2 kg/cm2 )
Tracker (3) 199 psi (14.0 kg/cm2 )
(1) Information not available at time of publication.
(2) Maximum variation between cylinders is 14 psi (1.0 kg/cm2 ).
(3) Minimum pressure is 170 psi (12.0 kg/cm2 ).