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Engine Compression

COMPRESSION RATIO

Application Specification
Amigo, Pickup & Rodeo
2.3L & 2.6L 8.3:1
3.1L 8.5:1
Trooper
2.6L 8.3:1
2.8L 8.9:1
COMPRESSION PRESSURE

Application Specification
Amigo, Pickup & Rodeo
2.3L & 2.6L (1) 142-171 psi (9.9-12.0 kg/cm2 )
3.1L (2)
Trooper
2.6L (1) 155-157 psi (10-12 kg/cm2 )
2.8L (3) 100 psi (7.0 kg/cm2 )
(1) Minimum pressure is 114 psi (8.0 kg/cm2 ).
(2) Information is not available from mfg.
(3) Minimum pressure listed. Pressure should not be less than 70 percent of highest cyl.