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Engine Compression

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
Amigo & Pickup
2.3L & 2.6L 8.3:1
Impulse 1.6L 9.8:1
Trooper
2.6L 8.3:1
2.8L 8.9:1
Compression Pressure
Amigo & Pickup
2.3L & 2.6L (1) 142-171 psi (9.9-12.0 kg/cm2 )
Impulse 1.6L (2) 185 psi (13.0 kg/cm2 )
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) Minimum pressure is 128 psi (9.0 kg/cm2 ).
(3) Minimum pressure listed. Pressure should not be less than 70 percent of highest cylinder.